US20130048290A1 - Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns - Google Patents
Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns Download PDFInfo
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- US20130048290A1 US20130048290A1 US13/219,790 US201113219790A US2013048290A1 US 20130048290 A1 US20130048290 A1 US 20130048290A1 US 201113219790 A US201113219790 A US 201113219790A US 2013048290 A1 US2013048290 A1 US 2013048290A1
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- response
- valve
- magnetic device
- injection valve
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- 239000007924 injection Substances 0.000 title claims abstract description 87
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
- E21B34/102—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
- E21B34/102—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position
- E21B34/103—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position with a shear pin
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/162—Injecting fluid from longitudinally spaced locations in injection well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Definitions
- This disclosure relates generally to equipment utilized and operations performed in conjunction with a subterranean well and, in an example described below, more particularly provides for injection of fluid into selected ones of multiple zones in a well, and provides for magnetic actuation of well tools.
- the fluid could be treatment, stimulation, fracturing, acidizing, conformance, or other type of fluid.
- a method of actuating a well tool can include displacing a magnetic device pattern in the well, thereby transmitting a corresponding magnetic signal to the well tool, and the well tool actuating in response to detection of the magnetic signal.
- a method of injecting fluid into selected ones of multiple zones penetrated by a wellbore is provided to the art by the disclosure below.
- the method can include displacing one or more magnetic devices into one or more valves in the wellbore, the valve(s) actuating in response to the magnetic device displacing, and injecting the fluid through the valve(s) and into at least one of the zones associated with the valve(s).
- an injection valve for use in a subterranean well is described below.
- the injection valve can include a sensor which detects a magnetic field, and an actuator which opens the injection valve in response to detection of at least one predetermined magnetic signal by the sensor.
- the method can include displacing a set of one or more magnetic devices through a tubular string having multiple injection valves interconnected therein, opening a set of the injection valves in response to the displacing of the magnetic device set, displacing another set of one or more magnetic devices through the tubular string, and opening another set of one or more injection valves in response to the second magnetic device set displacing.
- a magnetic device described below can, in one example, comprise multiple magnetic field-producing components arranged in a pattern on a sphere.
- FIG. 1 is a representative partially cross-sectional view of a well system and associated method which can embody principles of this disclosure.
- FIG. 2 is a representative cross-sectional view of an injection valve which may be used in the well system and method, and which can embody the principles of this disclosure.
- FIGS. 3-6 are a representative cross-sectional views of another example of the injection valve, in run-in, actuated and reverse flow configurations thereof.
- FIGS. 7 & 8 are representative side and plan views of a magnetic device which may be used with the injection valve.
- FIG. 9 is a representative cross-sectional view of another example of the injection valve.
- FIG. 1 Representatively illustrated in FIG. 1 is a system 10 for use with a well, and an associated method, which can embody principles of this disclosure.
- a tubular string 12 is positioned in a wellbore 14 , with the tubular string having multiple injection valves 16 a - e and packers 18 a - e interconnected therein.
- the tubular string 12 may be of the type known to those skilled in the art as casing, liner, tubing, a production string, a work string, etc. Any type of tubular string may be used and remain within the scope of this disclosure.
- the packers 18 a - e seal off an annulus 20 formed radially between the tubular string 12 and the wellbore 14 .
- the packers 18 a - e in this example are designed for sealing engagement with an uncased or open hole wellbore 14 , but if the wellbore is cased or lined, then cased hole-type packers may be used instead. Swellable, inflatable, expandable and other types of packers may be used, as appropriate for the well conditions, or no packers may be used (for example, the tubular string 12 could be expanded into contact with the wellbore 14 , the tubular string could be cemented in the wellbore, etc.).
- the injection valves 16 a - e permit selective fluid communication between an interior of the tubular string 12 and each section of the annulus 20 isolated between two of the packers 18 a - e .
- Each section of the annulus 20 is in fluid communication with a corresponding earth formation zone 22 a - d .
- the injection valves 16 a - e can otherwise be placed in communication with the individual zones 22 a - d , for example, with perforations, etc.
- the zones 22 a - d may be sections of a same formation 22 , or they may be sections of different formations. Each zone 22 a - d may be associated with one or more of the injection valves 16 a - e.
- two injection valves 16 b,c are associated with the section of the annulus 20 isolated between the packers 18 b,c , and this section of the annulus is in communication with the associated zone 22 b . It will be appreciated that any number of injection valves may be associated with a zone.
- the multiple injection valves can provide for injecting fluid 24 at multiple fracture initiation points along the wellbore 14 .
- the valve 16 c has been opened, and fluid 24 is being injected into the zone 22 b , thereby forming the fractures 26 .
- the other valves 16 a,b,d,e are closed while the fluid 24 is being flowed out of the valve 16 c and into the zone 22 b .
- This enables all of the fluid 24 flow to be directed toward forming the fractures 26 , with enhanced control over the operation at that particular location.
- valves 16 a - e could be open while the fluid 24 is flowed into a zone of an earth formation 22 .
- both of the valves 16 b,c could be open while the fluid 24 is flowed into the zone 22 b . This would enable fractures to be formed at multiple fracture initiation locations corresponding to the open valves.
- valves 16 a - e it would be beneficial to be able to open different sets of one or more of the valves 16 a - e at different times.
- one set (such as valves 16 b,c ) could be opened at one time (such as, when it is desired to form fractures 26 into the zone 22 b ), and another set (such as valve 16 a ) could be opened at another time (such as, when it is desired to form fractures into the zone 22 a ).
- One or more sets of the valves 16 a - e could be open simultaneously. However, it is generally preferable for only one set of the valves 16 a - e to be open at a time, so that the fluid 24 flow can be concentrated on a particular zone, and so flow into that zone can be individually controlled.
- the fluid 24 could be any type of fluid which is injected into an earth formation, e.g., for stimulation, conformance, acidizing, fracturing, water-flooding, steam-flooding, treatment, or any other purpose.
- the principles of this disclosure are applicable to many different types of well systems and operations.
- FIG. 2 an enlarged scale cross-sectional view of one example of the injection valve 16 is representatively illustrated.
- the injection valve 16 of FIG. 2 may be used in the well system 10 and method of FIG. 1 , or it may be used in other well systems and methods, while still remaining within the scope of this disclosure.
- the valve 16 includes openings 28 in a sidewall of a generally tubular housing 30 .
- the openings 28 are blocked by a sleeve 32 , which is retained in position by shear members 34 .
- valve 16 In this configuration, fluid communication is prevented between the annulus 20 external to the valve 16 , and an internal flow passage 36 which extends longitudinally through the valve (and which extends longitudinally through the tubular string 12 when the valve is interconnected therein).
- the valve 16 can be opened, however, by shearing the shear members 34 and displacing the sleeve 32 (downward as viewed in FIG. 2 ) to a position in which the sleeve does not block the openings 28 .
- a magnetic device 38 is displaced into the valve to activate an actuator 50 thereof.
- the magnetic device 38 is depicted in FIG. 2 as being generally cylindrical, but other shapes and types of magnetic devices (such as, balls, darts, plugs, fluids, gels, etc.) may be used in other examples.
- a ferrofluid, magnetorheological fluid, or any other fluid having magnetic properties which can be sensed by the sensor 40 could be pumped to or past the sensor in order to transmit a magnetic signal to the actuator 50 .
- the magnetic device 38 may be displaced into the valve 16 by any technique.
- the magnetic device 38 can be dropped through the tubular string 12 , pumped by flowing fluid through the passage 36 , self-propelled, conveyed by wireline, slickline, coiled tubing, etc.
- the magnetic device 38 has known magnetic properties, and/or produces a known magnetic field, or pattern or combination of magnetic fields, which is/are detected by a magnetic sensor 40 of the valve 16 .
- the magnetic sensor 40 can be any type of sensor which is capable of detecting the presence of the magnetic field(s) produced by the magnetic device 38 , and/or one or more other magnetic properties of the magnetic device.
- Suitable sensors include (but are not limited to) giant magneto-resistive (GMR) sensors, Hall-effect sensors, conductive coils, etc. Permanent magnets can be combined with the magnetic sensor 40 in order to create a magnetic field that is disturbed by the magnetic device 38 . A change in the magnetic field can be detected by the sensor 40 as an indication of the presence of the magnetic device 38 .
- GMR giant magneto-resistive
- the sensor 40 is connected to electronic circuitry 42 which determines whether the sensor has detected a particular predetermined magnetic field, or pattern or combination of magnetic fields, or other magnetic properties of the magnetic device 38 .
- the electronic circuitry 42 could have the predetermined magnetic field(s) or other magnetic properties programmed into non-volatile memory for comparison to magnetic fields/properties detected by the sensor 40 .
- the electronic circuitry 42 could be supplied with electrical power via an on-board battery, a downhole generator, or any other electrical power source.
- the electronic circuitry 42 could include a capacitor, wherein an electrical resonance behavior between the capacitance of the capacitor and the magnetic sensor 40 changes, depending on whether the magnetic device 38 is present.
- the electronic circuitry 42 could include an adaptive magnetic field that adjusts to a baseline magnetic field of the surrounding environment (e.g., the formation 22 , surrounding metallic structures, etc.). The electronic circuitry 42 could determine whether the measured magnetic fields exceed the adaptive magnetic field level.
- the senor 40 could comprise an inductive sensor which can detect the presence of a metallic device (e.g., by detecting a change in a magnetic field, etc.).
- the metallic device (such as a metal ball or dart, etc.) can be considered a magnetic device 38 , in the sense that it conducts a magnetic field and produces changes in a magnetic field which can be detected by the sensor 40 .
- the electronic circuitry 42 determines that the sensor 40 has detected the predetermined magnetic field(s) or change(s) in magnetic field(s), the electronic circuitry causes a valve device 44 to open.
- the valve device 44 includes a piercing member 46 which pierces a pressure barrier 48 .
- the piercing member 46 can be driven by any means, such as, by an electrical, hydraulic, mechanical, explosive, chemical or other type of actuator.
- Other types of valve devices 44 such as those described in U.S. patent application Nos. 12/688 058 and 12/353 664, the entire disclosures of which are incorporated herein by this reference) may be used, in keeping with the scope of this disclosure.
- a piston 52 on a mandrel 54 becomes unbalanced (e.g., a pressure differential is created across the piston), and the piston displaces downward as viewed in FIG. 2 .
- This displacement of the piston 52 could, in some examples, be used to shear the shear members 34 and displace the sleeve 32 to its open position.
- the piston 52 displacement is used to activate a retractable seat 56 to a sealing position thereof.
- the retractable seat 56 is in the form of resilient collets 58 which are initially received in an annular recess 60 formed in the housing 30 . In this position, the retractable seat 56 is retracted, and is not capable of sealingly engaging the magnetic device 38 or any other form of plug in the flow passage 36 .
- a plug (such as, a ball, a dart, a magnetic device 38 , etc.) can sealingly engage the seat 56 , and increased pressure can be applied to the passage 36 above the plug to thereby shear the shear members 34 and downwardly displace the sleeve 32 to its open position.
- the retractable seat 56 may be sealingly engaged by the magnetic device 38 which initially activates the actuator 50 (e.g., in response to the sensor 40 detecting the predetermined magnetic field(s) or change(s) in magnetic field(s) produced by the magnetic device), or the retractable seat may be sealingly engaged by another magnetic device and/or plug subsequently displaced into the valve 16 .
- the retractable seat 56 may be actuated to its sealing position in response to displacement of more than one magnetic device 38 into the valve 16 .
- the electronic circuitry 42 may not actuate the valve device 44 until a predetermined number of the magnetic devices 38 have been displaced into the valve 16 , and/or until a predetermined spacing in time is detected, etc.
- FIGS. 3-6 another example of the injection valve 16 is representatively illustrated.
- the sleeve 32 is initially in a closed position, as depicted in FIG. 3 .
- the sleeve 32 is displaced to its open position (see FIG. 4 ) when a support fluid 63 is flowed from one chamber 64 to another chamber 66 .
- the chambers 64 , 66 are initially isolated from each other by the pressure barrier 48 .
- the sensor 40 detects the predetermined magnetic signal(s) produced by the magnetic device(s) 38
- the piercing member 46 pierces the pressure barrier 48
- the support fluid 63 flows from the chamber 64 to the chamber 66 , thereby allowing a pressure differential across the sleeve 32 to displace the sleeve downward to its open position, as depicted in FIG.
- Fluid 24 can now be flowed outward through the openings 28 from the passage 36 to the annulus 20 .
- the retractable seat 56 is now extended inwardly to its sealing position.
- the retractable seat 56 is in the form of an expandable ring which is extended radially inward to its sealing position by the downward displacement of the sleeve 32 .
- the magnetic device 38 in this example comprises a ball or sphere.
- one or more permanent magnets 68 or other type of magnetic field-producing components are included in the magnetic device 38 .
- the magnetic device 38 is retrieved from the passage 36 by reverse flow of fluid through the passage 36 (e.g., upward flow as viewed in FIG. 5 ).
- the magnetic device 38 is conveyed upwardly through the passage 36 by this reverse flow, and eventually engages in sealing contact with the seat 56 , as depicted in FIG. 5 .
- a pressure differential across the magnetic device 38 and seat 56 causes them to be displaced upward against a downward biasing force exerted by a spring 70 on a retainer sleeve 72 .
- the magnetic device 38 , seat 56 and sleeve 72 are displaced upward, thereby allowing the seat 56 to expand outward to its retracted position, and allowing the magnetic device 38 to be conveyed upward through the passage 36 , e.g., for retrieval to the surface.
- FIGS. 7 & 8 another example of the magnetic device 38 is representatively illustrated.
- magnets (not shown in FIGS. 7 & 8 , see, e.g., permanent magnet 68 in FIG. 4 ) are retained in recesses 74 formed in an outer surface of a sphere 76 .
- the recesses 74 are arranged in a pattern which, in this case, resembles that of stitching on a baseball.
- the pattern comprises spaced apart positions distributed along a continuous undulating path about the sphere 76 .
- any pattern of magnetic field-producing components may be used in the magnetic device 38 , in keeping with the scope of this disclosure.
- the magnets 68 are preferably arranged to provide a magnetic field a substantial distance from the device 38 , and to do so no matter the orientation of the sphere 76 .
- the pattern depicted in FIGS. 7 & 8 desirably projects the produced magnetic field(s) substantially evenly around the sphere 76 .
- the actuator 50 includes two of the valve devices 44 .
- valve devices 44 When one of the valve devices 44 opens, a sufficient amount of the support fluid 63 is drained to displace the sleeve 32 to its open position (similar to, e.g., FIG. 4 ), in which the fluid 24 can be flowed outward through the openings 28 .
- the other valve device 44 opens, more of the support fluid 63 is drained, thereby further displacing the sleeve 32 to a closed position (as depicted in FIG. 9 ), in which flow through the openings 28 is prevented by the sleeve.
- valve devices 44 may be opened when a first magnetic device 38 is displaced into the valve 16 , and the other valve device may be opened when a second magnetic device is displaced into the valve.
- the second valve device 44 may be actuated in response to passage of a predetermined amount of time from a particular magnetic device 38 , or a predetermined number of magnetic devices, being detected by the sensor 40 .
- first valve device 44 may actuate when a certain number of magnetic devices 38 have been displaced into the valve 16
- second valve device 44 may actuate when another number of magnetic devices have been displaced into the valve.
- the actuator 50 in any of its FIGS. 2-9 configurations could be in actuating multiple injection valves.
- the actuator 50 could be used to actuate multiple ones of the RAPIDFRAC (TM) Sleeve marketed by Halliburton Energy Services, Inc. of Houston, Tex. USA.
- the actuator 50 could initiate metering of a hydraulic fluid in the RAPIDFRAC (TM) Sleeves in response to a particular magnetic device 38 being displaced through them, so that all of them open after a certain period of time.
- the seat 58 is initially expanded or “retracted” from its sealing position, and is later deflected inward to its sealing position. In the FIGS. 3-6 example, the seat 58 can then be again expanded (see FIG. 6 ) for retrieval of the magnetic device 38 (or to otherwise minimize obstruction of the passage 36 ).
- the seat 58 in both of these examples can be considered “retractable,” in that the seat can be in its inward sealing position, or in its outward non-sealing position, when desired.
- the seat 58 can be in its non-sealing position when initially installed, and then can be actuated to its sealing position (e.g., in response to detection of a predetermined pattern or combination of magnetic fields), without later being actuated to its sealing position again, and still be considered a “retractable” seat.
- the senor 40 is depicted as being included in the valve 16 , it will be appreciated that the sensor could be otherwise positioned.
- the sensor 40 could be located in another housing interconnected in the tubular string 12 above or below one or more of the valves 16 a - e in the system 10 of FIG. 1 .
- Multiple sensors 40 could be used, for example, to detect a pattern of magnetic field-producing components on a magnetic device 38 .
- the scope of this disclosure is not limited to any particular positioning or number of the sensor(s) 40 .
- the senor 40 can detect magnetic signals which correspond to displacing one or more magnetic devices 38 in the well (e.g., through the passage 36 , etc.) in certain respective patterns.
- the transmitting of different magnetic signals can be used to actuate corresponding different sets of the valves 16 a - e.
- displacing a pattern of magnetic devices 38 in a well can be used to transmit a corresponding magnetic signal to well tools (such as valves 16 a - e , etc.), and at least one of the well tools can actuate in response to detection of the magnetic signal.
- the pattern may comprise a predetermined number of the magnetic devices 38 , a predetermined spacing in time of the magnetic devices 38 , or a predetermined spacing on time between predetermined numbers of the magnetic devices 38 , etc. Any pattern may be used in keeping with the scope of this disclosure.
- the magnetic device pattern can comprise a predetermined magnetic field pattern (such as, the pattern of magnetic field-producing components on the magnetic device 38 of FIGS. 7 & 8 , etc.), a predetermined pattern of multiple magnetic fields (such as, a pattern produced by displacing multiple magnetic devices 38 in a certain manner through the well, etc.), a predetermined change in a magnetic field (such as, a change produced by displacing a metallic device past or to the sensor 40 ), and/or a predetermined pattern of multiple magnetic field changes (such as, a pattern produced by displacing multiple metallic devices in a certain manner past or to the sensor 40 , etc.). Any manner of producing a magnetic device pattern may be used, within the scope of this disclosure.
- a first set of the well tools might actuate in response to detection of a first magnetic signal.
- a second set of the well tools might actuate in response to detection of another magnetic signal.
- the second magnetic signal can correspond to a second unique magnetic device pattern produced in the well.
- the term “pattern” is used in this description to refer to an arrangement of magnetic field-producing components (such as permanent magnets 68 , etc.) of a magnetic device 38 (as in the FIGS. 7 & 8 example), and to refer to a manner in which multiple magnetic devices can be displaced in a well.
- the sensor 40 can, in some examples, detect a pattern of magnetic field-producing components of a magnetic device 38 . In other examples, the sensor 40 can detect a pattern of displacing multiple magnetic devices.
- the sensor 40 may detect a pattern on a single magnetic device 38 , such as the magnetic device of FIGS. 7 & 8 .
- magnetic field-producing components could be axially spaced on a magnetic device 38 , such as a dart, rod, etc.
- the sensor 40 may detect a pattern of different North-South poles of the magnetic device 38 .
- the electronic circuitry 42 can determine whether an actuator 50 of a particular well tool should actuate or not, should actuate open or closed, should actuate more open or more closed, etc.
- the sensor 40 may detect patterns created by displacing multiple magnetic devices 38 in the well. For example, three magnetic devices 38 could be displaced in the valve 16 (or past or to the sensor 40 ) within three minutes of each other, and then no magnetic devices could be displaced for the next three minutes.
- the electronic circuitry 42 can receive this pattern of indications from the sensor 40 , which encodes a digital command for communicating with the well tools (e.g., “waking” the well tool actuators 50 from a low power consumption “sleep” state). Once awakened, the well tool actuators 50 can, for example, actuate in response to respective predetermined numbers, timing, and/or other patterns of magnetic devices 38 displacing in the well. This method can help prevent extraneous activities (such as, the passage of wireline tools, etc. through the valve 16 ) from being misidentified as an operative magnetic signal.
- the injection valve 16 can be conveniently and reliably opened by displacing the magnetic device 38 into the valve, or otherwise detecting a particular magnetic signal by a sensor of the valve. Selected ones or sets of injection valves 16 can be individually opened, when desired, by displacing a corresponding one or more magnetic devices 38 into the selected valve(s).
- the magnetic device(s) 38 may have a predetermined pattern of magnetic field-producing components, or otherwise emit a predetermined combination of magnetic fields, in order to actuate a corresponding predetermined set of injection valves 16 a - e.
- the above disclosure describes a method of injecting fluid 24 into selected ones of multiple zones 22 a - d penetrated by a wellbore 14 .
- the method can include displacing at least one magnetic device 38 in the wellbore 14 , at least one valve 16 actuating in response to the displacing step, and injecting the fluid 24 through the valve 16 and into at least one of the zones 22 a - d associated with the valve 16 .
- the valve(s) 16 could actuate to an open (or at least more open, from partially open to fully open, etc.) configuration in response to the displacing step.
- the valve 16 may actuate in response to displacing a predetermined number of magnetic devices 38 into the valve 16 .
- a retractable seat 56 may be activated to a sealing position in response to the displacing step.
- the valve 16 may actuate in response to the magnetic device 38 having a predetermined magnetic pattern, in response to a predetermined magnetic signal being transmitted from the magnetic device 38 to the valve, and/or in response to a sensor 40 of the valve 16 detecting a magnetic field of the magnetic device 38 .
- the valve 16 may close in response to at least two of the magnetic devices 38 being displaced into the valve 16 .
- the method can include retrieving the magnetic device 38 from the valve 16 .
- Retrieving the magnetic device 38 may include expanding a retractable seat 56 and/or displacing the magnetic device 38 through a seat 56 .
- the magnetic device 38 may comprise multiple magnetic field-producing components (such as multiple magnets 68 , etc.) arranged in a pattern on a sphere 76 .
- the pattern can comprise spaced apart positions distributed along a continuous undulating path about the sphere 76 .
- the injection valve 16 can include a sensor 40 which detects a magnetic field, and an actuator 50 which opens the injection valve 16 in response to detection of at least one predetermined magnetic signal by the sensor 40 .
- the actuator 50 may open the injection valve 16 in response to a predetermined number of magnetic signals being detected by the sensor 40 .
- the injection valve 16 can also include a retractable seat 56 .
- the retractable seat 56 may be activated to a sealing position in response to detection of the predetermined magnetic signal by the sensor 40 .
- the actuator 50 may open the injection valve 16 in response to a predetermined magnetic pattern being detected by the sensor 40 , and/or in response to multiple predetermined magnetic signals being detected by the sensor. At least two of the predetermined magnetic signals may be different from each other.
- a method of injecting fluid 24 into selected ones of multiple zones 22 a - d penetrated by a wellbore 14 is also described above.
- the method can include displacing a first set of at least one magnetic device 38 through a tubular string 12 having multiple injection valves 16 a - e interconnected therein, opening a first set (such as, valves 16 b,c ) of at least one of the injection valves 16 a - e in response to the first magnetic device 38 set displacing step, displacing a second set of at least one magnetic device 38 through the tubular string 12 , and opening a second set (such as, valve 16 a ) of at least one of the injection valves 16 a - e in response to the second magnetic device 38 set displacing step.
- the first injection valve set 16 b,c may open in response to the first magnetic device 38 set including a first predetermined number of the magnetic devices 38 .
- the second injection valve set 16 a may open in response to the second magnetic device 38 set including a second predetermined number of the magnetic devices 38 .
- At least one retractable seat 56 of the first injection valve set 16 b,c can be activated to a sealing position in response to the step of displacing the first magnetic device 38 set through the tubular string 12 .
- the first injection valve set 16 b,c may open in response to the first magnetic device 38 set having a first predetermined magnetic pattern.
- the second injection valve set 16 a may open in response to the second magnetic device 38 set having a second predetermined magnetic pattern.
- the first injection valve set 16 b,c may open in response to a first predetermined magnetic signal being transmitted from the first magnetic device 38 set to the first injection valve set 16 b,c .
- the second injection valve set 16 a may open in response to a second predetermined magnetic signal being transmitted from the second magnetic device 38 set to the second injection valve set 16 a.
- the first injection valve set 16 b,c may open in response to at least one sensor 40 of the first injection valve set 16 b,c detecting a magnetic field of the first magnetic device 38 set.
- the second injection valve set 16 a may open in response to at least one sensor 40 of the second injection valve set 16 a detecting a magnetic field of the second magnetic device 38 set.
- the method can include displacing a third set of at least one magnetic device 38 through the tubular string 12 .
- the first injection valve set 16 b,c can close in response to the third magnetic device 38 set displacing step.
- the method can include displacing a fourth set of at least one magnetic device 38 through the tubular string 12 .
- the second injection valve set 16 a may close in response to the fourth magnetic device 38 set displacing step.
- the above disclosure describes a method of actuating well tools in a well.
- the method can include producing a first magnetic device pattern in the well, thereby transmitting a corresponding first magnetic signal to the well tools (such as valves 16 a - e , etc.), and at least one of the well tools actuating in response to detection of the first magnetic signal.
- the first magnetic device pattern may comprise a predetermined number of the magnetic devices 38 , a predetermined spacing in time of the magnetic devices 38 , or a predetermined spacing in time between predetermined numbers of the magnetic devices 38 , etc. Any pattern may be used in keeping with the scope of this disclosure.
- a first set of the well tools may actuate in response to detection of the first magnetic signal.
- a second set of the well tools may actuate in response to detection of a second magnetic signal.
- the second magnetic signal can correspond to a second pattern of magnetic devices 38 displaced in the well.
- the well tools can comprise valves, such as injection valves 16 , or other types of valves, or other types of well tools.
- Other types of valves can include (but are not limited to) sliding side doors, flapper valves, ball valves, gate valves, pyrotechnic valves, etc.
- Other types of well tools can include packers 18 a - e , production control, conformance, fluid segregation, and other types of tools.
- the method may include injecting fluid 24 outward through the injection valves 16 a - e and into a formation 22 surrounding a wellbore 14 .
- the method may include detecting the first magnetic signal with a magnetic sensor 40 .
- the magnetic device pattern can comprise a predetermined magnetic field pattern (such as, the pattern of magnetic field-producing components on the magnetic device 38 of FIGS. 7 & 8 , etc.), a predetermined pattern of multiple magnetic fields (such as, a pattern produced by displacing multiple magnetic devices 38 in a certain manner through the well, etc.), a predetermined change in a magnetic field (such as, a change produced by displacing a metallic device past or to the sensor 40 ), and/or a predetermined pattern of multiple magnetic field changes (such as, a pattern produced by displacing multiple metallic devices in a certain manner past or to the sensor 40 , etc.).
- a predetermined magnetic field pattern such as, the pattern of magnetic field-producing components on the magnetic device 38 of FIGS. 7 & 8 , etc.
- a predetermined pattern of multiple magnetic fields such as, a pattern produced by displacing multiple magnetic devices 38 in a certain manner through the well, etc.
- a predetermined change in a magnetic field such as, a change
- a magnetic device 38 described above can include multiple magnetic field-producing components arranged in a pattern on a sphere 76 .
- the magnetic field-producing components may comprise permanent magnets 68 .
- the pattern may comprise spaced apart positions distributed along a continuous undulating path about the sphere 76 .
- the magnetic field-producing components may be positioned in recesses 74 formed on the sphere 76 .
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Abstract
A method of actuating a well tool can include displacing a magnetic device pattern in the well, thereby transmitting a corresponding magnetic signal to the well tool, and the well tool actuating in response to detection of the magnetic signal. A method of injecting fluid into selected ones of multiple zones penetrated by a wellbore can include displacing at least one magnetic device into at least one valve in the wellbore, the valve actuating in response to the displacing step, and injecting the fluid through the valve and into at least one of the zones associated with the valve. An injection valve for use in a subterranean well can include a sensor which detects a magnetic field, and an actuator which opens the injection valve in response to detection of at least one predetermined magnetic signal by the sensor.
Description
- This disclosure relates generally to equipment utilized and operations performed in conjunction with a subterranean well and, in an example described below, more particularly provides for injection of fluid into selected ones of multiple zones in a well, and provides for magnetic actuation of well tools.
- It can be beneficial in some circumstances to individually, or at least selectively, inject fluid into multiple formation zones penetrated by a wellbore. For example, the fluid could be treatment, stimulation, fracturing, acidizing, conformance, or other type of fluid.
- Therefore, it will be appreciated that improvements are continually needed in the art. These improvements could be useful in operations other than selectively injecting fluid into formation zones.
- In the disclosure below, systems and methods are provided which bring improvements to the art. One example is described below in which a magnetic device is used to open a selected one or more valves associated with different zones. Another example is described below in which different magnetic devices, or different combinations of magnetic devices can be used to actuate respective different ones of multiple well tools.
- A method of actuating a well tool can include displacing a magnetic device pattern in the well, thereby transmitting a corresponding magnetic signal to the well tool, and the well tool actuating in response to detection of the magnetic signal.
- In one aspect, a method of injecting fluid into selected ones of multiple zones penetrated by a wellbore is provided to the art by the disclosure below. In one example, the method can include displacing one or more magnetic devices into one or more valves in the wellbore, the valve(s) actuating in response to the magnetic device displacing, and injecting the fluid through the valve(s) and into at least one of the zones associated with the valve(s).
- In another aspect, an injection valve for use in a subterranean well is described below. In one example, the injection valve can include a sensor which detects a magnetic field, and an actuator which opens the injection valve in response to detection of at least one predetermined magnetic signal by the sensor.
- In a further aspect, another method of injecting fluid into selected ones of multiple zones penetrated by a wellbore is provided to the art. In one example described below, the method can include displacing a set of one or more magnetic devices through a tubular string having multiple injection valves interconnected therein, opening a set of the injection valves in response to the displacing of the magnetic device set, displacing another set of one or more magnetic devices through the tubular string, and opening another set of one or more injection valves in response to the second magnetic device set displacing.
- A magnetic device described below can, in one example, comprise multiple magnetic field-producing components arranged in a pattern on a sphere.
- These and other features, advantages and benefits will become apparent to one of ordinary skill in the art upon careful consideration of the detailed description of representative examples below and the accompanying drawings, in which similar elements are indicated in the various figures using the same reference numbers.
-
FIG. 1 is a representative partially cross-sectional view of a well system and associated method which can embody principles of this disclosure. -
FIG. 2 is a representative cross-sectional view of an injection valve which may be used in the well system and method, and which can embody the principles of this disclosure. -
FIGS. 3-6 are a representative cross-sectional views of another example of the injection valve, in run-in, actuated and reverse flow configurations thereof. -
FIGS. 7 & 8 are representative side and plan views of a magnetic device which may be used with the injection valve. -
FIG. 9 is a representative cross-sectional view of another example of the injection valve. - Representatively illustrated in
FIG. 1 is asystem 10 for use with a well, and an associated method, which can embody principles of this disclosure. In this example, atubular string 12 is positioned in awellbore 14, with the tubular string havingmultiple injection valves 16 a-e and packers 18 a-e interconnected therein. - The
tubular string 12 may be of the type known to those skilled in the art as casing, liner, tubing, a production string, a work string, etc. Any type of tubular string may be used and remain within the scope of this disclosure. - The packers 18 a-e seal off an
annulus 20 formed radially between thetubular string 12 and thewellbore 14. The packers 18 a-e in this example are designed for sealing engagement with an uncased oropen hole wellbore 14, but if the wellbore is cased or lined, then cased hole-type packers may be used instead. Swellable, inflatable, expandable and other types of packers may be used, as appropriate for the well conditions, or no packers may be used (for example, thetubular string 12 could be expanded into contact with thewellbore 14, the tubular string could be cemented in the wellbore, etc.). - In the
FIG. 1 example, theinjection valves 16 a-e permit selective fluid communication between an interior of thetubular string 12 and each section of theannulus 20 isolated between two of the packers 18 a-e. Each section of theannulus 20 is in fluid communication with a corresponding earth formation zone 22 a-d. Of course, if packers 18 a-e are not used, then theinjection valves 16 a-e can otherwise be placed in communication with the individual zones 22 a-d, for example, with perforations, etc. - The zones 22 a-d may be sections of a same formation 22, or they may be sections of different formations. Each zone 22 a-d may be associated with one or more of the
injection valves 16 a-e. - In the
FIG. 1 example, twoinjection valves 16 b,c are associated with the section of theannulus 20 isolated between thepackers 18 b,c, and this section of the annulus is in communication with theassociated zone 22 b. It will be appreciated that any number of injection valves may be associated with a zone. - It is sometimes beneficial to initiate
fractures 26 at multiple locations in a zone (for example, in tight shale formations, etc.), in which cases the multiple injection valves can provide for injectingfluid 24 at multiple fracture initiation points along thewellbore 14. In the example depicted inFIG. 1 , thevalve 16 c has been opened, andfluid 24 is being injected into thezone 22 b, thereby forming thefractures 26. - Preferably, the
other valves 16 a,b,d,e are closed while thefluid 24 is being flowed out of thevalve 16 c and into thezone 22 b. This enables all of thefluid 24 flow to be directed toward forming thefractures 26, with enhanced control over the operation at that particular location. - However, in other examples,
multiple valves 16 a-e could be open while thefluid 24 is flowed into a zone of an earth formation 22. In thewell system 10, for example, both of thevalves 16 b,c could be open while thefluid 24 is flowed into thezone 22 b. This would enable fractures to be formed at multiple fracture initiation locations corresponding to the open valves. - It will, thus, be appreciated that it would be beneficial to be able to open different sets of one or more of the
valves 16 a-e at different times. For example, one set (such asvalves 16 b,c) could be opened at one time (such as, when it is desired to formfractures 26 into thezone 22 b), and another set (such asvalve 16 a) could be opened at another time (such as, when it is desired to form fractures into thezone 22 a). - One or more sets of the
valves 16 a-e could be open simultaneously. However, it is generally preferable for only one set of thevalves 16 a-e to be open at a time, so that thefluid 24 flow can be concentrated on a particular zone, and so flow into that zone can be individually controlled. - At this point, it should be noted that the
well system 10 and method is described here and depicted in the drawings as merely one example of a wide variety of possible systems and methods which can incorporate the principles of this disclosure. Therefore, it should be understood that those principles are not limited in any manner to the details of thesystem 10 or associated method, or to the details of any of the components thereof (for example, thetubular string 12, thewellbore 14, thevalves 16 a-e, the packers 18 a-e, etc.). - It is not necessary for the
wellbore 14 to be vertical as depicted inFIG. 1 , for the wellbore to be uncased, for there to be five each of thevalves 16 a-e and packers, for there to be four of the zones 22 a-d, forfractures 26 to be formed in the zones, etc. Thefluid 24 could be any type of fluid which is injected into an earth formation, e.g., for stimulation, conformance, acidizing, fracturing, water-flooding, steam-flooding, treatment, or any other purpose. Thus, it will be appreciated that the principles of this disclosure are applicable to many different types of well systems and operations. - Referring additionally now to
FIG. 2 , an enlarged scale cross-sectional view of one example of theinjection valve 16 is representatively illustrated. Theinjection valve 16 ofFIG. 2 may be used in thewell system 10 and method ofFIG. 1 , or it may be used in other well systems and methods, while still remaining within the scope of this disclosure. - In the
FIG. 2 example, thevalve 16 includesopenings 28 in a sidewall of a generallytubular housing 30. Theopenings 28 are blocked by asleeve 32, which is retained in position byshear members 34. - In this configuration, fluid communication is prevented between the
annulus 20 external to thevalve 16, and aninternal flow passage 36 which extends longitudinally through the valve (and which extends longitudinally through thetubular string 12 when the valve is interconnected therein). Thevalve 16 can be opened, however, by shearing theshear members 34 and displacing the sleeve 32 (downward as viewed inFIG. 2 ) to a position in which the sleeve does not block theopenings 28. - To open the
valve 16, amagnetic device 38 is displaced into the valve to activate anactuator 50 thereof. Themagnetic device 38 is depicted inFIG. 2 as being generally cylindrical, but other shapes and types of magnetic devices (such as, balls, darts, plugs, fluids, gels, etc.) may be used in other examples. For example, a ferrofluid, magnetorheological fluid, or any other fluid having magnetic properties which can be sensed by thesensor 40, could be pumped to or past the sensor in order to transmit a magnetic signal to theactuator 50. - The
magnetic device 38 may be displaced into thevalve 16 by any technique. For example, themagnetic device 38 can be dropped through thetubular string 12, pumped by flowing fluid through thepassage 36, self-propelled, conveyed by wireline, slickline, coiled tubing, etc. - The
magnetic device 38 has known magnetic properties, and/or produces a known magnetic field, or pattern or combination of magnetic fields, which is/are detected by amagnetic sensor 40 of thevalve 16. Themagnetic sensor 40 can be any type of sensor which is capable of detecting the presence of the magnetic field(s) produced by themagnetic device 38, and/or one or more other magnetic properties of the magnetic device. - Suitable sensors include (but are not limited to) giant magneto-resistive (GMR) sensors, Hall-effect sensors, conductive coils, etc. Permanent magnets can be combined with the
magnetic sensor 40 in order to create a magnetic field that is disturbed by themagnetic device 38. A change in the magnetic field can be detected by thesensor 40 as an indication of the presence of themagnetic device 38. - The
sensor 40 is connected toelectronic circuitry 42 which determines whether the sensor has detected a particular predetermined magnetic field, or pattern or combination of magnetic fields, or other magnetic properties of themagnetic device 38. For example, theelectronic circuitry 42 could have the predetermined magnetic field(s) or other magnetic properties programmed into non-volatile memory for comparison to magnetic fields/properties detected by thesensor 40. Theelectronic circuitry 42 could be supplied with electrical power via an on-board battery, a downhole generator, or any other electrical power source. - In one example, the
electronic circuitry 42 could include a capacitor, wherein an electrical resonance behavior between the capacitance of the capacitor and themagnetic sensor 40 changes, depending on whether themagnetic device 38 is present. In another example, theelectronic circuitry 42 could include an adaptive magnetic field that adjusts to a baseline magnetic field of the surrounding environment (e.g., the formation 22, surrounding metallic structures, etc.). Theelectronic circuitry 42 could determine whether the measured magnetic fields exceed the adaptive magnetic field level. - In one example, the
sensor 40 could comprise an inductive sensor which can detect the presence of a metallic device (e.g., by detecting a change in a magnetic field, etc.). The metallic device (such as a metal ball or dart, etc.) can be considered amagnetic device 38, in the sense that it conducts a magnetic field and produces changes in a magnetic field which can be detected by thesensor 40. - If the
electronic circuitry 42 determines that thesensor 40 has detected the predetermined magnetic field(s) or change(s) in magnetic field(s), the electronic circuitry causes avalve device 44 to open. In this example, thevalve device 44 includes a piercingmember 46 which pierces apressure barrier 48. - The piercing
member 46 can be driven by any means, such as, by an electrical, hydraulic, mechanical, explosive, chemical or other type of actuator. Other types of valve devices 44 (such as those described in U.S. patent application Nos. 12/688 058 and 12/353 664, the entire disclosures of which are incorporated herein by this reference) may be used, in keeping with the scope of this disclosure. - When the
valve device 44 is opened, apiston 52 on amandrel 54 becomes unbalanced (e.g., a pressure differential is created across the piston), and the piston displaces downward as viewed inFIG. 2 . This displacement of thepiston 52 could, in some examples, be used to shear theshear members 34 and displace thesleeve 32 to its open position. - However, in the
FIG. 2 example, thepiston 52 displacement is used to activate aretractable seat 56 to a sealing position thereof. As depicted inFIG. 2 , theretractable seat 56 is in the form ofresilient collets 58 which are initially received in anannular recess 60 formed in thehousing 30. In this position, theretractable seat 56 is retracted, and is not capable of sealingly engaging themagnetic device 38 or any other form of plug in theflow passage 36. - When the
piston 52 displaces downward, thecollets 58 are deflected radially inward by aninclined face 62 of therecess 60, and theseat 56 is then in its sealing position. A plug (such as, a ball, a dart, amagnetic device 38, etc.) can sealingly engage theseat 56, and increased pressure can be applied to thepassage 36 above the plug to thereby shear theshear members 34 and downwardly displace thesleeve 32 to its open position. - As mentioned above, the
retractable seat 56 may be sealingly engaged by themagnetic device 38 which initially activates the actuator 50 (e.g., in response to thesensor 40 detecting the predetermined magnetic field(s) or change(s) in magnetic field(s) produced by the magnetic device), or the retractable seat may be sealingly engaged by another magnetic device and/or plug subsequently displaced into thevalve 16. - Furthermore, the
retractable seat 56 may be actuated to its sealing position in response to displacement of more than onemagnetic device 38 into thevalve 16. For example, theelectronic circuitry 42 may not actuate thevalve device 44 until a predetermined number of themagnetic devices 38 have been displaced into thevalve 16, and/or until a predetermined spacing in time is detected, etc. - Referring additionally now to
FIGS. 3-6 , another example of theinjection valve 16 is representatively illustrated. In this example, thesleeve 32 is initially in a closed position, as depicted inFIG. 3 . Thesleeve 32 is displaced to its open position (seeFIG. 4 ) when asupport fluid 63 is flowed from onechamber 64 to anotherchamber 66. - The
chambers pressure barrier 48. When thesensor 40 detects the predetermined magnetic signal(s) produced by the magnetic device(s) 38, the piercingmember 46 pierces thepressure barrier 48, and thesupport fluid 63 flows from thechamber 64 to thechamber 66, thereby allowing a pressure differential across thesleeve 32 to displace the sleeve downward to its open position, as depicted in FIG. - 4.
-
Fluid 24 can now be flowed outward through theopenings 28 from thepassage 36 to theannulus 20. Note that theretractable seat 56 is now extended inwardly to its sealing position. In this example, theretractable seat 56 is in the form of an expandable ring which is extended radially inward to its sealing position by the downward displacement of thesleeve 32. - In addition, note that the
magnetic device 38 in this example comprises a ball or sphere. Preferably, one or morepermanent magnets 68 or other type of magnetic field-producing components are included in themagnetic device 38. - In
FIG. 5 , themagnetic device 38 is retrieved from thepassage 36 by reverse flow of fluid through the passage 36 (e.g., upward flow as viewed inFIG. 5 ). Themagnetic device 38 is conveyed upwardly through thepassage 36 by this reverse flow, and eventually engages in sealing contact with theseat 56, as depicted inFIG. 5 . - In
FIG. 6 , a pressure differential across themagnetic device 38 andseat 56 causes them to be displaced upward against a downward biasing force exerted by aspring 70 on aretainer sleeve 72. When the biasing force is overcome, themagnetic device 38,seat 56 andsleeve 72 are displaced upward, thereby allowing theseat 56 to expand outward to its retracted position, and allowing themagnetic device 38 to be conveyed upward through thepassage 36, e.g., for retrieval to the surface. - Referring additionally now to
FIGS. 7 & 8 , another example of themagnetic device 38 is representatively illustrated. In this example, magnets (not shown inFIGS. 7 & 8 , see, e.g.,permanent magnet 68 inFIG. 4 ) are retained inrecesses 74 formed in an outer surface of asphere 76. - The
recesses 74 are arranged in a pattern which, in this case, resembles that of stitching on a baseball. InFIGS. 7 & 8 , the pattern comprises spaced apart positions distributed along a continuous undulating path about thesphere 76. However, it should be clearly understood that any pattern of magnetic field-producing components may be used in themagnetic device 38, in keeping with the scope of this disclosure. - The
magnets 68 are preferably arranged to provide a magnetic field a substantial distance from thedevice 38, and to do so no matter the orientation of thesphere 76. The pattern depicted inFIGS. 7 & 8 desirably projects the produced magnetic field(s) substantially evenly around thesphere 76. - Referring additionally now to
FIG. 9 , another example of theinjection valve 16 is representatively illustrated. In this example, theactuator 50 includes two of thevalve devices 44. - When one of the
valve devices 44 opens, a sufficient amount of thesupport fluid 63 is drained to displace thesleeve 32 to its open position (similar to, e.g.,FIG. 4 ), in which the fluid 24 can be flowed outward through theopenings 28. When theother valve device 44 opens, more of thesupport fluid 63 is drained, thereby further displacing thesleeve 32 to a closed position (as depicted inFIG. 9 ), in which flow through theopenings 28 is prevented by the sleeve. - Various different techniques may be used to control actuation of the
valve devices 44. For example, one of thevalve devices 44 may be opened when a firstmagnetic device 38 is displaced into thevalve 16, and the other valve device may be opened when a second magnetic device is displaced into the valve. As another example, thesecond valve device 44 may be actuated in response to passage of a predetermined amount of time from a particularmagnetic device 38, or a predetermined number of magnetic devices, being detected by thesensor 40. - As yet another example, the
first valve device 44 may actuate when a certain number ofmagnetic devices 38 have been displaced into thevalve 16, and thesecond valve device 44 may actuate when another number of magnetic devices have been displaced into the valve. Thus, it should be understood that any technique for controlling actuation of thevalve devices 44 may be used, in keeping with the scope of this disclosure. - Another use for the actuator 50 (in any of its
FIGS. 2-9 configurations) could be in actuating multiple injection valves. For example, theactuator 50 could be used to actuate multiple ones of the RAPIDFRAC (™) Sleeve marketed by Halliburton Energy Services, Inc. of Houston, Tex. USA. Theactuator 50 could initiate metering of a hydraulic fluid in the RAPIDFRAC (™) Sleeves in response to a particularmagnetic device 38 being displaced through them, so that all of them open after a certain period of time. - Note that in the FIGS. 2 & 3-6 examples, the
seat 58 is initially expanded or “retracted” from its sealing position, and is later deflected inward to its sealing position. In theFIGS. 3-6 example, theseat 58 can then be again expanded (seeFIG. 6 ) for retrieval of the magnetic device 38 (or to otherwise minimize obstruction of the passage 36). - The
seat 58 in both of these examples can be considered “retractable,” in that the seat can be in its inward sealing position, or in its outward non-sealing position, when desired. Thus, theseat 58 can be in its non-sealing position when initially installed, and then can be actuated to its sealing position (e.g., in response to detection of a predetermined pattern or combination of magnetic fields), without later being actuated to its sealing position again, and still be considered a “retractable” seat. - Although in the examples of
FIGS. 2-6 , thesensor 40 is depicted as being included in thevalve 16, it will be appreciated that the sensor could be otherwise positioned. For example, thesensor 40 could be located in another housing interconnected in thetubular string 12 above or below one or more of thevalves 16 a-e in thesystem 10 ofFIG. 1 .Multiple sensors 40 could be used, for example, to detect a pattern of magnetic field-producing components on amagnetic device 38. Thus, it should be understood that the scope of this disclosure is not limited to any particular positioning or number of the sensor(s) 40. - In examples described above, the
sensor 40 can detect magnetic signals which correspond to displacing one or moremagnetic devices 38 in the well (e.g., through thepassage 36, etc.) in certain respective patterns. The transmitting of different magnetic signals (corresponding to respective different patterns of displacing the magnetic devices 38) can be used to actuate corresponding different sets of thevalves 16 a-e. - Thus, displacing a pattern of
magnetic devices 38 in a well can be used to transmit a corresponding magnetic signal to well tools (such asvalves 16 a-e, etc.), and at least one of the well tools can actuate in response to detection of the magnetic signal. The pattern may comprise a predetermined number of themagnetic devices 38, a predetermined spacing in time of themagnetic devices 38, or a predetermined spacing on time between predetermined numbers of themagnetic devices 38, etc. Any pattern may be used in keeping with the scope of this disclosure. - The magnetic device pattern can comprise a predetermined magnetic field pattern (such as, the pattern of magnetic field-producing components on the
magnetic device 38 ofFIGS. 7 & 8 , etc.), a predetermined pattern of multiple magnetic fields (such as, a pattern produced by displacing multiplemagnetic devices 38 in a certain manner through the well, etc.), a predetermined change in a magnetic field (such as, a change produced by displacing a metallic device past or to the sensor 40), and/or a predetermined pattern of multiple magnetic field changes (such as, a pattern produced by displacing multiple metallic devices in a certain manner past or to thesensor 40, etc.). Any manner of producing a magnetic device pattern may be used, within the scope of this disclosure. - A first set of the well tools might actuate in response to detection of a first magnetic signal. A second set of the well tools might actuate in response to detection of another magnetic signal. The second magnetic signal can correspond to a second unique magnetic device pattern produced in the well.
- The term “pattern” is used in this description to refer to an arrangement of magnetic field-producing components (such as
permanent magnets 68, etc.) of a magnetic device 38 (as in theFIGS. 7 & 8 example), and to refer to a manner in which multiple magnetic devices can be displaced in a well. Thesensor 40 can, in some examples, detect a pattern of magnetic field-producing components of amagnetic device 38. In other examples, thesensor 40 can detect a pattern of displacing multiple magnetic devices. - The
sensor 40 may detect a pattern on a singlemagnetic device 38, such as the magnetic device ofFIGS. 7 & 8 . In another example, magnetic field-producing components could be axially spaced on amagnetic device 38, such as a dart, rod, etc. In some examples, thesensor 40 may detect a pattern of different North-South poles of themagnetic device 38. By detecting different patterns of different magnetic field-producing components, theelectronic circuitry 42 can determine whether anactuator 50 of a particular well tool should actuate or not, should actuate open or closed, should actuate more open or more closed, etc. - The
sensor 40 may detect patterns created by displacing multiplemagnetic devices 38 in the well. For example, threemagnetic devices 38 could be displaced in the valve 16 (or past or to the sensor 40) within three minutes of each other, and then no magnetic devices could be displaced for the next three minutes. - The
electronic circuitry 42 can receive this pattern of indications from thesensor 40, which encodes a digital command for communicating with the well tools (e.g., “waking” thewell tool actuators 50 from a low power consumption “sleep” state). Once awakened, thewell tool actuators 50 can, for example, actuate in response to respective predetermined numbers, timing, and/or other patterns ofmagnetic devices 38 displacing in the well. This method can help prevent extraneous activities (such as, the passage of wireline tools, etc. through the valve 16) from being misidentified as an operative magnetic signal. - It may now be fully appreciated that the above disclosure provides several advancements to the art. The
injection valve 16 can be conveniently and reliably opened by displacing themagnetic device 38 into the valve, or otherwise detecting a particular magnetic signal by a sensor of the valve. Selected ones or sets ofinjection valves 16 can be individually opened, when desired, by displacing a corresponding one or moremagnetic devices 38 into the selected valve(s). The magnetic device(s) 38 may have a predetermined pattern of magnetic field-producing components, or otherwise emit a predetermined combination of magnetic fields, in order to actuate a corresponding predetermined set ofinjection valves 16 a-e. - The above disclosure describes a method of injecting
fluid 24 into selected ones of multiple zones 22 a-d penetrated by awellbore 14. In one example, the method can include displacing at least onemagnetic device 38 in thewellbore 14, at least onevalve 16 actuating in response to the displacing step, and injecting the fluid 24 through thevalve 16 and into at least one of the zones 22 a-d associated with thevalve 16. The valve(s) 16 could actuate to an open (or at least more open, from partially open to fully open, etc.) configuration in response to the displacing step. - The
valve 16 may actuate in response to displacing a predetermined number ofmagnetic devices 38 into thevalve 16. - A
retractable seat 56 may be activated to a sealing position in response to the displacing step. - The
valve 16 may actuate in response to themagnetic device 38 having a predetermined magnetic pattern, in response to a predetermined magnetic signal being transmitted from themagnetic device 38 to the valve, and/or in response to asensor 40 of thevalve 16 detecting a magnetic field of themagnetic device 38. - The
valve 16 may close in response to at least two of themagnetic devices 38 being displaced into thevalve 16. - The method can include retrieving the
magnetic device 38 from thevalve 16. Retrieving themagnetic device 38 may include expanding aretractable seat 56 and/or displacing themagnetic device 38 through aseat 56. - The
magnetic device 38 may comprise multiple magnetic field-producing components (such asmultiple magnets 68, etc.) arranged in a pattern on asphere 76. The pattern can comprise spaced apart positions distributed along a continuous undulating path about thesphere 76. - Also described above is an
injection valve 16 for use in a subterranean well. In one example, theinjection valve 16 can include asensor 40 which detects a magnetic field, and anactuator 50 which opens theinjection valve 16 in response to detection of at least one predetermined magnetic signal by thesensor 40. - The
actuator 50 may open theinjection valve 16 in response to a predetermined number of magnetic signals being detected by thesensor 40. - The
injection valve 16 can also include aretractable seat 56. Theretractable seat 56 may be activated to a sealing position in response to detection of the predetermined magnetic signal by thesensor 40. - The
actuator 50 may open theinjection valve 16 in response to a predetermined magnetic pattern being detected by thesensor 40, and/or in response to multiple predetermined magnetic signals being detected by the sensor. At least two of the predetermined magnetic signals may be different from each other. - A method of injecting
fluid 24 into selected ones of multiple zones 22 a-d penetrated by awellbore 14 is also described above. In one example, the method can include displacing a first set of at least onemagnetic device 38 through atubular string 12 havingmultiple injection valves 16 a-e interconnected therein, opening a first set (such as,valves 16 b,c) of at least one of theinjection valves 16 a-e in response to the firstmagnetic device 38 set displacing step, displacing a second set of at least onemagnetic device 38 through thetubular string 12, and opening a second set (such as,valve 16 a) of at least one of theinjection valves 16 a-e in response to the secondmagnetic device 38 set displacing step. - The first injection valve set 16 b,c may open in response to the first
magnetic device 38 set including a first predetermined number of themagnetic devices 38. The second injection valve set 16 a may open in response to the secondmagnetic device 38 set including a second predetermined number of themagnetic devices 38. - At least one
retractable seat 56 of the first injection valve set 16 b,c can be activated to a sealing position in response to the step of displacing the firstmagnetic device 38 set through thetubular string 12. - The first injection valve set 16 b,c may open in response to the first
magnetic device 38 set having a first predetermined magnetic pattern. The second injection valve set 16 a may open in response to the secondmagnetic device 38 set having a second predetermined magnetic pattern. - The first injection valve set 16 b,c may open in response to a first predetermined magnetic signal being transmitted from the first
magnetic device 38 set to the first injection valve set 16 b,c. The second injection valve set 16 a may open in response to a second predetermined magnetic signal being transmitted from the secondmagnetic device 38 set to the second injection valve set 16 a. - The first injection valve set 16 b,c may open in response to at least one
sensor 40 of the first injection valve set 16 b,c detecting a magnetic field of the firstmagnetic device 38 set. The second injection valve set 16 a may open in response to at least onesensor 40 of the second injection valve set 16 a detecting a magnetic field of the secondmagnetic device 38 set. - The method can include displacing a third set of at least one
magnetic device 38 through thetubular string 12. The first injection valve set 16 b,c can close in response to the thirdmagnetic device 38 set displacing step. - The method can include displacing a fourth set of at least one
magnetic device 38 through thetubular string 12. The second injection valve set 16 a may close in response to the fourthmagnetic device 38 set displacing step. - In another aspect, the above disclosure describes a method of actuating well tools in a well. In one example, the method can include producing a first magnetic device pattern in the well, thereby transmitting a corresponding first magnetic signal to the well tools (such as
valves 16 a-e, etc.), and at least one of the well tools actuating in response to detection of the first magnetic signal. - The first magnetic device pattern may comprise a predetermined number of the
magnetic devices 38, a predetermined spacing in time of themagnetic devices 38, or a predetermined spacing in time between predetermined numbers of themagnetic devices 38, etc. Any pattern may be used in keeping with the scope of this disclosure. - A first set of the well tools may actuate in response to detection of the first magnetic signal. A second set of the well tools may actuate in response to detection of a second magnetic signal. The second magnetic signal can correspond to a second pattern of
magnetic devices 38 displaced in the well. - The well tools can comprise valves, such as
injection valves 16, or other types of valves, or other types of well tools. Other types of valves can include (but are not limited to) sliding side doors, flapper valves, ball valves, gate valves, pyrotechnic valves, etc. Other types of well tools can include packers 18 a-e, production control, conformance, fluid segregation, and other types of tools. - The method may include injecting
fluid 24 outward through theinjection valves 16 a-e and into a formation 22 surrounding awellbore 14. - The method may include detecting the first magnetic signal with a
magnetic sensor 40. - The magnetic device pattern can comprise a predetermined magnetic field pattern (such as, the pattern of magnetic field-producing components on the
magnetic device 38 ofFIGS. 7 & 8 , etc.), a predetermined pattern of multiple magnetic fields (such as, a pattern produced by displacing multiplemagnetic devices 38 in a certain manner through the well, etc.), a predetermined change in a magnetic field (such as, a change produced by displacing a metallic device past or to the sensor 40), and/or a predetermined pattern of multiple magnetic field changes (such as, a pattern produced by displacing multiple metallic devices in a certain manner past or to thesensor 40, etc.). - In one example, a
magnetic device 38 described above can include multiple magnetic field-producing components arranged in a pattern on asphere 76. The magnetic field-producing components may comprisepermanent magnets 68. - The pattern may comprise spaced apart positions distributed along a continuous undulating path about the
sphere 76. - The magnetic field-producing components may be positioned in
recesses 74 formed on thesphere 76. - It is to be understood that the various examples described above may be utilized in various orientations, such as inclined, inverted, horizontal, vertical, etc., and in various configurations, without departing from the principles of this disclosure. The embodiments illustrated in the drawings are depicted and described merely as examples of useful applications of the principles of the disclosure, which are not limited to any specific details of these embodiments.
- In the above description of the representative examples, directional terms (such as “above,” “below,” “upper,” “lower,” “upward,” “downward,” etc.) are used for convenience in referring to the accompanying drawings. However, it should be clearly understood that the scope of this disclosure is not limited to any particular directions described herein.
- Of course, a person skilled in the art would, upon a careful consideration of the above description of representative embodiments, readily appreciate that many modifications, additions, substitutions, deletions, and other changes may be made to these specific embodiments, and such changes are within the scope of the principles of this disclosure. Accordingly, the foregoing detailed description is to be clearly understood as being given by way of illustration and example only, the spirit and scope of the invention being limited solely by the appended claims and their equivalents.
Claims (67)
1. A method of actuating at least one well tool in a well, the method comprising:
producing a first magnetic device pattern in the well, thereby transmitting a corresponding first magnetic signal to the well tool; and
the well tool actuating in response to detection of the first magnetic signal.
2. The method of claim 1 , wherein the first pattern comprises a predetermined number of the magnetic devices.
3. The method of claim 1 , wherein the first pattern comprises a predetermined spacing in time of the magnetic devices.
4. The method of claim 1 , wherein the first pattern comprises a predetermined spacing in time between predetermined numbers of the magnetic devices.
5. The method of claim 1 , wherein the at least one well tool comprises multiple well tools, and wherein a first set of the well tools actuates in response to detection of the first magnetic signal.
6. The method of claim 5 , wherein a second set of the well tools actuates in response to detection of a second magnetic signal.
7. The method of claim 6 , wherein the second magnetic signal corresponds to a second magnetic device pattern produced in the well.
8. The method of claim 1 , wherein the well tool comprises a valve.
9. The method of claim 8 , wherein the valve comprises an injection valve.
10. The method of claim 9 , further comprising injecting fluid outward through the injection valve and into a formation surrounding a wellbore.
11. The method of claim 1 , further comprising detecting the first magnetic signal with a magnetic sensor.
12. The method of claim 11 , wherein the magnetic sensor comprises an inductive sensor.
13. The method of claim 1 , wherein the first magnetic device pattern comprises a predetermined magnetic field arrangement.
14. The method of claim 1 , wherein the first magnetic device pattern comprises a predetermined arrangement of multiple magnetic fields.
15. The method of claim 1 , wherein the first magnetic device pattern comprises a predetermined change in a magnetic field.
16. The method of claim 1 , wherein the first magnetic device pattern comprises a predetermined pattern of multiple magnetic field changes.
17. A method of injecting fluid into selected ones of multiple zones penetrated by a wellbore, the method comprising:
displacing at least one magnetic device in the wellbore;
at least one valve actuating in response to the displacing; and
injecting the fluid through the valve and into at least one of the zones associated with the valve.
18. The method of claim 17 , wherein the valve actuates in response to the displacing step comprising displacing a predetermined number of the magnetic devices into the valve.
19. The method of claim 17 , wherein a retractable seat is activated to a sealing position in response to the displacing.
20. The method of claim 17 , wherein the valve actuates in response to the magnetic device having a predetermined magnetic pattern.
21. The method of claim 17 , wherein the valve actuates in response to displacing a predetermined pattern of multiple magnetic devices in the displacing step.
22. The method of claim 17 , wherein the valve actuates in response to a predetermined magnetic signal being transmitted from the magnetic device to the valve.
23. The method of claim 17 , wherein the valve actuates in response to a sensor of the valve detecting a magnetic field of the magnetic device.
24. The method of claim 17 , wherein the valve actuates in response to a sensor of the valve detecting a change in a magnetic field.
25. The method of claim 17 , further comprising the valve closing in response to the displacing step.
26. The method of claim 25 , wherein at least two of the magnetic devices are displaced into the valve.
27. The method of claim 17 , further comprising retrieving the magnetic device from the valve.
28. The method of claim 27 , wherein retrieving the magnetic device comprises expanding a retractable seat.
29. The method of claim 27 , wherein retrieving the magnetic device comprises displacing the magnetic device through a seat.
30. The method of claim 17 , wherein the magnetic device comprises multiple magnetic field-producing components arranged in a pattern on a sphere.
31. The method of claim 30 , wherein the pattern comprises spaced apart positions distributed along a continuous undulating path about the sphere.
32. An injection valve for use in a subterranean well, the injection valve comprising:
at least one sensor which detects a magnetic field; and
an actuator which opens the injection valve in response to detection of at least one predetermined magnetic signal by the sensor.
33. The injection valve of claim 32 , wherein the actuator opens the injection valve in response to a predetermined number of magnetic signals being detected by the sensor.
34. The injection valve of claim 32 , further comprising a retractable seat.
35. The injection valve of claim 34 , wherein the retractable seat is activated to a sealing position in response to detection of the predetermined magnetic signal by the sensor.
36. The injection valve of claim 32 , wherein the actuator opens the injection valve in response to a predetermined magnetic pattern being detected by the sensor.
37. The injection valve of claim 32 , wherein the actuator closes the injection valve in response to multiple predetermined magnetic signals being detected by the sensor.
38. The injection valve of claim 37 , wherein at least two of the predetermined magnetic signals are different from each other.
39. A method of injecting fluid into selected ones of multiple zones penetrated by a wellbore, the method comprising:
displacing a first set of at least one magnetic device through a tubular string having multiple injection valves interconnected therein;
actuating a first set of at least one of the injection valves in response to the first magnetic device set displacing;
displacing a second set of at least one magnetic device through the tubular string; and
actuating a second set of at least one of the injection valves in response to the second magnetic device set displacing.
40. The method of claim 39 , wherein the first injection valve set actuates in response to the first magnetic device set including a first predetermined number of the magnetic devices.
41. The method of claim 40 , wherein the second injection valve set actuates in response to the second magnetic device set including a second predetermined number of the magnetic devices.
42. The method of claim 39 , wherein at least one retractable seat of the first injection valve set is activated to a sealing position in response to the step of displacing the first magnetic device set through the tubular string.
43. The method of claim 39 , wherein the first injection valve set actuates in response to the first magnetic device set having a first predetermined magnetic pattern.
44. The method of claim 43 , wherein the second injection valve set actuates in response to the second magnetic device set having a second predetermined magnetic pattern.
45. The method of claim 39 , wherein the first injection valve set actuates in response to a first predetermined magnetic signal being transmitted from the first magnetic device set to the first injection valve set.
46. The method of claim 45 , wherein the second injection valve set actuates in response to a second predetermined magnetic signal being transmitted from the second magnetic device set to the second injection valve set.
47. The method of claim 39 , wherein the first injection valve set actuates in response to at least one first sensor of the first injection valve set detecting a magnetic field of the first magnetic device set.
48. The method of claim 47 , wherein the second injection valve set actuates in response to at least one second sensor of the second injection valve set detecting a magnetic field of the second magnetic device set.
49. The method of claim 39 , further comprising displacing a third set of at least one magnetic device through the tubular string.
50. The method of claim 49 , further comprising closing the first injection valve set in response to the third magnetic device set displacing.
51. The method of claim 50 , further comprising displacing a fourth set of at least one magnetic device through the tubular string.
52. The method of claim 51 , further comprising closing the second injection valve set in response to the fourth magnetic device set displacing.
53. A magnetic device, comprising:
multiple magnetic field-producing components arranged in a pattern on a sphere.
54. The magnetic device of claim 53 , wherein the magnetic field-producing components comprise permanent magnets.
55. The magnetic device of claim 53 , wherein the pattern comprises spaced apart positions distributed along a continuous undulating path about the sphere.
56. The magnetic device of claim 53 , wherein the magnetic field-producing components are positioned in recesses formed on the sphere.
57. The magnetic device of claim 53 , wherein the pattern of magnetic field-producing components projects at least one magnetic field substantially evenly about the sphere.
58. A method of actuating at least one well tool in a subterranean well, the method comprising:
inwardly retracting a seat in the well tool; and
then outwardly expanding the seat in the well tool.
59. The method of claim 58 , wherein the inwardly retracting is performed in response to displacing a magnetic device in the well tool.
60. The method of claim 58 , wherein the inwardly retracting is performed in response to displacing a magnetic device through the well tool.
61. The method of claim 58 , further comprising sealingly engaging the seat with a plug, after the inwardly retracting.
62. The method of claim 61 , wherein the outwardly expanding is performed in response to the sealingly engaging.
63. A valve for use in a subterranean well, the valve comprising:
a seat which is sealingly engaged by a plug in the well, and
wherein the seat inwardly retracts and outwardly expands in succession.
64. The valve of claim 63 , wherein the seat inwardly retracts in response to displacement of a magnetic device in the valve.
65. The valve of claim 63 , wherein the seat inwardly retracts in response to displacement of a magnetic device through the valve.
66. The valve of claim 63 , wherein the seat sealingly engages the plug in an inwardly retracted configuration of the seat.
67. The valve of claim 66 , wherein the seat outwardly expands in response to sealing engagement between the plug and the seat.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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US13/219,790 US20130048290A1 (en) | 2011-08-29 | 2011-08-29 | Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns |
US13/440,727 US9151138B2 (en) | 2011-08-29 | 2012-04-05 | Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns |
MX2014002266A MX2014002266A (en) | 2011-08-29 | 2012-08-14 | Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns. |
PCT/US2012/050762 WO2013032687A2 (en) | 2011-08-29 | 2012-08-14 | Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns |
CA2844960A CA2844960A1 (en) | 2011-08-29 | 2012-08-14 | Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns |
EP12828545.9A EP2751379A2 (en) | 2011-08-29 | 2012-08-14 | Injection of fluid into selected ones of multiple zones with well tools selectively responsive to magnetic patterns |
ARP120103158A AR087690A1 (en) | 2011-08-29 | 2012-08-27 | FLUID INJECTION IN MULTIPLE SELECTED AREAS WITH TOOLS FOR OIL WELLS THAT SELECTLY RESPOND TO MAGNETIC PATTERNS |
US13/624,173 US9010442B2 (en) | 2011-08-29 | 2012-09-21 | Method of completing a multi-zone fracture stimulation treatment of a wellbore |
US15/021,751 US9976401B2 (en) | 2011-08-29 | 2013-10-21 | Erosion resistant baffle for downhole wellbore tools |
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Also Published As
Publication number | Publication date |
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AR087690A1 (en) | 2014-04-09 |
MX2014002266A (en) | 2014-04-25 |
WO2013032687A3 (en) | 2013-07-11 |
CA2844960A1 (en) | 2013-03-07 |
WO2013032687A2 (en) | 2013-03-07 |
EP2751379A2 (en) | 2014-07-09 |
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