CN112113760B - Device for evaluating dynamic performance of gel valve - Google Patents
Device for evaluating dynamic performance of gel valve Download PDFInfo
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- CN112113760B CN112113760B CN201910535290.2A CN201910535290A CN112113760B CN 112113760 B CN112113760 B CN 112113760B CN 201910535290 A CN201910535290 A CN 201910535290A CN 112113760 B CN112113760 B CN 112113760B
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- oil pipe
- gel valve
- dynamic performance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
- G01M3/14—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/144—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for valves
Abstract
The invention provides a device for evaluating dynamic performance of a gel valve. The experimental device of the invention comprises: the device comprises a shaft, an oil pipe, an air source, a tripping device, a data acquisition device and a control device; a gel valve is arranged in the shaft, and the shaft below the gel valve is provided with an air inlet communicated with the air source output port; the tripping device is fixedly connected with the oil pipe; the data acquisition device comprises a pressure sensor, a tension sensor and a temperature sensor. The invention uses the tripping device to lift the oil pipe out of the gel valve, uses the pressure sensor to measure the pressure in the shaft in the process, uses the speed sensor to measure the speed of the oil pipe, uses the tension sensor to measure the tension of the oil pipe, carries out simulation experiment on the dynamic pressure-bearing capacity and the sealing capacity of the gel valve, provides experiment data support for the improvement of the performance of the subsequent gel valve, thereby improving the construction safety and the success rate of the underbalanced drilling.
Description
Technical Field
The invention relates to the technical field of petroleum, in particular to a device for evaluating dynamic performance of a gel valve.
Background
The whole-process underbalanced drilling technology is a powerful means for protecting a reservoir and efficiently developing a three-low (low abundance, low permeability and low yield) oil-gas field. The main reason for the effect of underbalanced drilling is the need for killing the well before or during tripping to balance the formation pressure. However, kill operations may completely offset the benefits of underbalanced drilling and may even cause more damage to the formation. Normally, underbalanced drilling is realized by adopting two modes of a snubbing tripping device and a casing valve, but the snubbing tripping device has the defects of more tools and complicated construction, the casing valve technology mainly depends on import and has high cost, and the purpose of underbalanced drilling cannot be achieved once the casing valve fails.
For this reason, in the prior art, gel valves are typically employed to achieve underbalanced drilling. The gel valve realizes certain pressure difference resistance by using the viscosity of the gel, and keeps static in a shaft, namely the valve is fixed; oil gas in a sealed shaft is isolated by utilizing the solid mechanical property of jelly, namely, valve sealing is realized; the viscoelasticity of the jelly is utilized to realize the smooth penetration of the pipe column and the self recovery, namely the opening and closing of a valve; the gel can be broken by the gel breaking property of the gel and is discharged to the ground after the operation is finished, namely, a valve is released.
However, the pressure-bearing capacity and the air tightness of the gel valve in the shaft directly affect the success and the safety of the underbalanced drilling, so that the inventor of the application needs to provide a dynamic performance evaluation device for the gel valve to simulate the air tightness of the gel valve in the shaft and improve the construction safety and the success rate of the underbalanced drilling.
Disclosure of Invention
The invention provides a device for evaluating the dynamic performance of a gel valve, which is used for simulating the dynamic state of the gel valve in a shaft, evaluating the dynamic performance of the gel valve and improving the construction safety and success rate of under-balanced drilling.
The embodiment of the invention provides a dynamic performance evaluation device for a gel valve, which comprises a shaft, an oil pipe, an air source, a tripping device, a data acquisition device and a control device, wherein the shaft is arranged in the shaft; a gel valve is arranged in the shaft, and the shaft below the gel valve is provided with an air inlet communicated with the air source output port; the tripping device is fixedly connected with the oil pipe so as to lower the oil pipe into the well bore or lift the oil pipe out of the well bore; the data acquisition device comprises a pressure sensor arranged in the shaft below the gel valve, a temperature sensor arranged on the outer wall of the shaft, a speed sensor arranged on the oil pipe and a tension sensor arranged between the oil pipe and the tripping device; the control device is respectively in communication connection with the pressure sensor, the temperature sensor, the speed sensor and the tension sensor.
The apparatus for evaluating the dynamic performance of the gel valve as described above, wherein an observation window is provided in the wellbore.
The device for evaluating the dynamic performance of the gel valve comprises a plurality of observation windows, wherein the observation windows are arranged at intervals along the circumferential direction of the shaft, and a preset distance is reserved between every two adjacent observation windows along the axial direction of the shaft.
The device for evaluating the dynamic performance of the gel valve is characterized in that the top end of the shaft is provided with an overflow port; the device for evaluating the dynamic performance of the gel valve further comprises an overflow pipe fixedly connected with the overflow port.
The device for evaluating the dynamic performance of the gel valve comprises a shaft, a drainage port and a drainage pipeline, wherein the drainage port is arranged at the bottom end of the shaft, and the drainage pipeline is fixedly connected with the drainage port.
The device for evaluating the dynamic performance of the gel valve further comprises a liquid preparation device, wherein the liquid preparation device comprises a liquid preparation container, a stirrer, a liquid outlet pipe and a liquid outlet valve arranged on the liquid outlet pipe; the upper end of the liquid preparation container is provided with a feed inlet, and the lower end of the liquid preparation container is provided with a liquid outlet; the liquid outlet pipe is respectively connected with the liquid outlet and the shaft; the stirrer comprises a stirring motor and a stirring rod fixedly connected with an output shaft of the stirring motor, and the stirring rod is positioned in the liquid preparation container.
The device for evaluating the dynamic performance of the gel valve further comprises an electric heating element arranged outside the well bore.
The device for evaluating the dynamic performance of the gel valve further comprises a derrick, wherein the derrick comprises a base and a support arranged on the base, and a limiting hole is formed in the support; the bottom end of the shaft is fixed on the base, and the top end of the shaft is located in the limiting hole.
The device for evaluating the dynamic performance of the gel valve comprises a support, a limit hole and a base, wherein the support comprises a vertical frame fixedly connected with the base, an operating platform fixedly connected with the vertical frame and an escalator arranged between the operating platform and the base, and the limit hole is arranged on the operating platform.
The device for evaluating the dynamic performance of the gel valve comprises a lifting hook, a cable, a pulley fixedly connected with the support and a winch in communication connection with the control device, wherein one end of the cable is fixedly connected with a winding drum of the winch, and the other end of the cable bypasses the pulley and is fixedly connected with the lifting hook.
According to the device for evaluating the dynamic performance of the gel valve, the gel valve is arranged in the shaft, the oil pipe is lifted out of the gel valve by using the lifting device, the pressure in the shaft is measured by using the pressure sensor in the process, the speed of the oil pipe is measured by using the speed sensor, the tension of the oil pipe is measured by using the tension sensor, a simulation experiment is performed on the dynamic pressure bearing capacity and the sealing capacity of the gel valve, and an experiment data support is provided for the improvement of the performance of the subsequent gel valve, so that the construction safety and the success rate of underbalanced drilling are improved.
Drawings
The above and other objects, features and advantages of the embodiments of the present invention will become more readily understood by the following detailed description with reference to the accompanying drawings. Embodiments of the invention will now be described, by way of example and not limitation, in the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a gel valve dynamic performance evaluation device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the wellbore of FIG. 1;
FIG. 3 is a schematic illustration of another embodiment of the wellbore of FIG. 2;
FIG. 4 is a schematic structural view of the liquid dispensing apparatus of FIG. 1;
fig. 5 is a schematic structural diagram of a gel valve dynamic performance evaluation device according to a second embodiment of the present invention;
fig. 6 is a schematic structural view of the derrick of fig. 5.
Description of reference numerals:
1: a wellbore; 11: an air inlet; 12: an observation window;
2: an oil pipe;
3: a gas source;
4: lifting and lowering the device; 41: a hook; 42: a cable; 43: a pulley; 44: a winch;
5: a gel valve;
6: a pressure sensor;
7: a speed sensor;
8: a tension sensor;
9: a liquid preparation device; 91: a liquid preparation container; 92: a liquid outlet pipe; 93: a liquid outlet valve; 94: an end cap; 95: a feed inlet;
10: a derrick; 101: a base; 102: erecting a frame; 103: an operating platform; 104: an escalator; 105: a guardrail; 106: a limiting hole;
20: a temperature sensor;
30: an electrical heating element.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Fig. 1 is a schematic structural diagram of a gel valve dynamic performance evaluation device according to an embodiment of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a device for evaluating dynamic performance of a gel valve, including a wellbore 1, an oil pipe 2, an air source 3, a tripping device 4, a data acquisition device, and a control device; a gel valve 5 is arranged in the shaft 1, and the shaft 1 below the gel valve 5 is provided with an air inlet 11 communicated with an output port of the air source 3; the tripping device 4 is fixedly connected with the oil pipe 2 so as to lower the oil pipe 2 into the shaft 1 or lift the oil pipe 2 out of the shaft 1; the data acquisition device comprises a pressure sensor 6 arranged in the shaft 1 below the gel valve 5, a temperature sensor 20 arranged on the outer wall of the shaft 1, a speed sensor 7 arranged on the oil pipe 2 and a tension sensor 8 arranged between the oil pipe 2 and the tripping device 4; the control device is in communication with the pressure sensor 6, the temperature sensor 20, the speed sensor 7 and the tension sensor 8, respectively.
Specifically, the wellbore 1 simulates a downhole casing, which may be an N80 steel casing or other steel pipes, and this is not limited in the embodiment of the present invention. The specific dimensions of the wellbore 1 are not limited by the embodiments of the invention, for example, the wellbore 1 may have an outer diameter of 7 inches, an inner diameter of 5 inches, and a height of 3 meters. The upper portion of pit shaft 1 can be welded with the lug to the installation and the dismantlement of experimental apparatus of being convenient for. The gel valve 5 in the wellbore 1 may be manufactured using existing gel valve manufacturing processes. The shaft 1 below the gel valve 5 is provided with an air inlet 11 for introducing air. The air inlet 11 may be provided with a thread to connect with an air inlet pipe; or, the air inlet 11 is provided with a flange plate, and is connected with the flange of the air inlet pipeline, which is not limited in the embodiment of the present invention. The shaft 1 below the gel valve 5 is provided with a pressure measuring hole for installing a pressure sensor 6.
The oil pipe 2 is a round steel pipe, the top end of the oil pipe is provided with a connecting piece fixedly connected with the tripping device 4, and the connecting piece can be a hook, a clamping buckle and the like, which is not limited in the embodiment of the invention.
The gas source 3 is used for introducing gas with a preset pressure into the well bore 1, and may be a gas pump. The gas source 3 may also be other ventilators. The output port of the gas source 3 is communicated with the gas inlet 11 of the shaft 1, or the output port of the gas source 3 is communicated with the gas inlet 11 of the shaft 1 through a gas inlet pipeline.
The tripping device 4 is fixedly connected to the oil pipe 2, and is used for tripping the oil pipe 2 into the well bore 1 or lifting the oil pipe 2 out of the well bore 1, and may be a crane, or the like, which is not limited herein. Alternatively, the take-off speed of the take-off device 4 may range from 0 to 1 m/s and be continuously adjustable.
The data acquisition device comprises a pressure sensor 6, a speed sensor 7 and a tension sensor 8, wherein the pressure sensor 6 is arranged in the shaft 1 below the gel valve 5, or the pressure sensor 6 is arranged in a pressure measurement hole arranged on the side wall of the shaft 1. The pressure sensor 6 may be a conventional piezoelectric sensor, a piezoresistive sensor, or the like, which is not limited in the embodiment of the present invention. The measuring range of the pressure sensor 6 is 0.001MPa to 2.5MPa, and the precision is 0.075%. The speed sensor 7 is installed on the oil pipe 2, and is used for measuring the speed when the oil pipe 2 is lowered or lifted, and may be an existing speed sensor, which is not limited in the embodiment of the present invention. The tension sensor 8 is arranged between the oil pipe 2 and the lifting device 4, and is used for measuring the tension of the lowering or lifting of the oil pipe 2, and the tension sensor may be an existing S-shaped tension sensor, a plate-ring tension sensor, or the like, which is not limited in the embodiment of the present invention. A temperature sensor 20 is disposed between the outer wall of the wellbore 1 and the electrical heating element 30 for measuring the temperature within the wellbore 1. The temperature sensor 20 may be a thermal resistance type temperature sensor or a thermocouple type temperature sensor, which is not limited in the embodiment of the present invention.
The control device is respectively in communication connection with the pressure sensor 6, the temperature sensor 20, the speed sensor 7 and the tension sensor 8 and is used for receiving a measurement pressure value sent by the pressure sensor 6, a temperature value sent by the temperature sensor 20, a measurement speed value sent by the speed sensor 7 and a tension measurement value sent by the tension sensor 8. The control means may comprise a memory for storing the value of the pressure measured by the pressure sensor 6, the value of the temperature sent by the temperature sensor 20, the value of the speed measured by the speed sensor 7 and the value of the tension measured by the tension sensor 8.
The device for evaluating the dynamic performance of the gel valve provided by the embodiment of the invention also comprises a display screen which is in communication connection with the control device and is used for displaying the pressure value measured by the pressure sensor 6, the speed value measured by the speed sensor 7 and the tension value measured by the tension sensor 8.
The gel valve is an intelligent chemical colloid used for underbalanced well completion, forms a high-viscosity semisolid colloid slug in a casing, has certain pressure difference resistance, and seals well shaft oil gas. The well completion pipe column can smoothly penetrate through the gel valve, and the gel valve realizes annular space dynamic sealing by self adhesion in the penetrating process of the pipe column, so that oil gas overflow is avoided. After completion, the gel valve can realize gel breaking liquefaction, and the residual liquid can be completely discharged by adopting nitrogen or clear water. It should be understood that, in the embodiment of the present invention, the processing technology and the material ratio of the jelly valve 5 are not limited.
The use process of the device for evaluating the dynamic performance of the gel valve provided by the embodiment of the invention is described in detail as follows:
the tripping device 4 is controlled to lower the oil pipe 2 into the shaft 1, and then the gel valve liquid is added into the shaft 1 and heated to form the gel valve 5.
Gas with preset pressure is introduced into the shaft 1 below the gel valve 5 through a gas source 3. For ease of observation, a small amount of water is added to the upper surface of the jelly valve 5.
And controlling the lifting device 4 to lift the oil pipe 2 at a preset speed for a preset distance until the oil pipe 2 is completely lifted out of the gel valve 5. Meanwhile, whether bubbles are generated in the water on the upper surface of the gel valve 5 is observed, and if no bubbles are generated in the whole lifting process, the gas tightness of the gel valve 5 is good under the preset pressure; otherwise, the air tightness is poor; the pressure sensor 6, the speed sensor 7 and the tension sensor 8 perform data measurement.
It can be understood that on the premise of inconvenient other conditions, the preset pressure in the shaft 1 below the gel valve 5 can be changed, and the air tightness of the gel valve under different pressures can be observed; or on the premise of inconvenient other conditions, changing the lifting speed and observing the influence of the lifting speed on the air tightness of the gel valve; or, taking the pulling force of the lifting device as a variable, and observing the influence of the pulling force on the air tightness of the gel valve.
According to the device for evaluating the dynamic performance of the gel valve, the gel valve is arranged in the shaft, the oil pipe is lifted out of the gel valve by using the lifting device, the pressure in the shaft is measured by using the pressure sensor in the process, the speed of the oil pipe is measured by using the speed sensor, the tension of the oil pipe is measured by using the tension sensor, a simulation experiment is performed on the dynamic pressure bearing capacity and the sealing capacity of the gel valve, and an experiment data support is provided for the improvement of the performance of the subsequent gel valve, so that the construction safety and the success rate of underbalanced drilling are improved.
Further, in order to better observe the state of the gel valve 5 in the lifting process of the oil pipe 2, the wellbore 1 of the gel valve dynamic performance evaluation device provided by the embodiment of the invention is provided with an observation window 12. The observation window 12 has temperature resistant requirements, and the observation window 12 can be made of high-strength glass so as to clearly observe the motion state of the internal fluid.
FIG. 2 is a schematic diagram of an embodiment of the wellbore of FIG. 1.
In some embodiments, one viewing window 12 is provided. For example, referring to figure 2, an observation window 12 is helically arranged around the central axis of the wellbore 1 to facilitate observation of the state of motion of the gel valve at various angles.
Fig. 3 is a schematic diagram of another embodiment of the wellbore of fig. 2.
In other embodiments, the observation window 12 is multiple, the observation windows 12 are spaced along the circumferential direction of the wellbore 1, and a preset distance is provided between two adjacent observation windows 12 along the axial direction of the wellbore 1.
Referring to fig. 3 specifically, the observation windows 12 may be provided with two, three, four, five, and the like, and the specific number of the observation windows 12 is not limited in the embodiment of the present invention. The plurality of observation windows 12 are arranged at intervals along the circumferential direction of the well bore 1, and a preset distance is arranged between two adjacent observation windows 12 along the axial direction of the well bore 1, that is, the plurality of observation windows 12 are spirally arranged around the well bore 1. When a plurality of observation windows 12 are provided, the observation windows 12 may be circular, square, or the like, and the size and shape of each observation window 12 are not limited in the present invention. For example, five observation windows 12 are provided, and the effective visible area of each observation window 12 is equal to or larger than 300 × 20mm, and is spirally and uniformly distributed from top to bottom, and the phase angle is 72 °.
Further, the top end of the shaft 1 is provided with an overflow port; the device for evaluating the dynamic performance of the gel valve further comprises an overflow pipe (not shown) fixedly connected with the overflow port.
Furthermore, the bottom end of the shaft 1 is provided with a liquid outlet, and the device for evaluating the dynamic performance of the gel valve further comprises a liquid outlet pipeline fixedly connected with the liquid outlet. After the experiment is finished, the gel valve is liquefied, and the liquefied gel valve is discharged through a liquid discharge port and a liquid discharge pipeline. Optionally, the liquid discharge port is a circular port with a diameter of 50 mm.
Fig. 4 is a schematic structural view of the liquid preparation device in fig. 1.
Referring to fig. 4, the device for evaluating dynamic performance of a jelly glue valve according to the embodiment of the present invention further includes a liquid preparation device 9, where the liquid preparation device 9 includes a liquid preparation container 91, a stirrer (not shown), a liquid outlet pipe 92, and a liquid outlet valve 93 installed on the liquid outlet pipe 92; the upper end of the liquid preparation container 91 is provided with a feed inlet 95, and the lower end of the liquid preparation container 91 is provided with a liquid outlet; the liquid outlet pipe 92 is respectively connected with a liquid outlet and the shaft 1; the agitator includes agitator motor and with agitator motor output shaft fixed connection's puddler, the puddler is located joins in marriage liquid container 91.
Specifically, the liquid preparation container 91 of the liquid preparation device 9 may be cylindrical, square, or the like, and the liquid preparation container 91 may be a stainless steel structure or may be made of other materials. Preferably, the liquid distribution container 91 includes an upper cylindrical portion and a lower funnel portion, and the liquid outlet is disposed at the lowermost end of the funnel portion. The liquid outlet may be a circular port with a diameter of 30 mm.
The liquid distribution device 9 further includes an end cover 94, the end cover 94 is covered on the top end of the liquid distribution container 91, the end cover 94 is in threaded connection with the liquid distribution container 91, or the end cover 94 is in flanged connection with the liquid distribution container 91. Wherein the charging port 95 is provided on the end cap 94. Alternatively, the feed port 95 is a circular port with a diameter of 100 mm.
The agitator includes agitator motor and with agitator motor output shaft fixed connection's puddler, be provided with the heliciform blade on the puddler, the puddler is located joins in marriage liquid container 91. Optionally, the length of the stirring rod is less than 10cm of the height of the liquid preparation container 91. The stirring motor can be an existing stepping motor, a servo motor and the like, and the embodiment of the invention does not limit the stirring motor. Alternatively, the speed of rotation of the agitator may be adjustable, for example continuously adjustable from 100 to 3000 revolutions per minute.
Further, the gel valve dynamic performance evaluation device provided by the embodiment further comprises an electric heating element 30 arranged outside the well bore 1. The electrical heating element 30 is used to heat the wellbore 1 and may be an electrical tracing band, or the electrical heating element 30 may be other heating devices, such as a heating jacket. Optionally, an insulating layer is provided on the outside of the electric heating element 30. The temperature control of the electrical heating element 30 can range from 20 c to 90 c with a tolerance of less than 2 c. The electric heating element can adopt PID temperature control technology.
Fig. 5 is a schematic structural diagram of a gel valve dynamic performance evaluation device according to a second embodiment of the present invention, and fig. 6 is a schematic structural diagram of a derrick shown in fig. 5.
Referring to fig. 5 and 6, the device for evaluating the dynamic performance of the gel valve provided in this embodiment further includes a derrick 10, where the derrick 10 includes a base 101 and a support arranged on the base 101, and the support is provided with a limit hole 106; the bottom end of the shaft 1 is fixed on the base 101, and the top end of the shaft 1 is located in the limiting hole 106.
Specifically, the base 101 may be a steel plate, and the base 101 may also be a cement floor, etc., which is not limited in the embodiment of the present invention. Preferably, the base 101 is made of a steel plate with patterns, and can bear the weight of not less than one ton.
The bracket may include a post and a plate fixed to the post, wherein the limiting hole 106 is formed in the plate. Preferably, the support comprises a stand 102 fixedly connected with the base 101, an operation platform 103 fixedly connected with the stand 102, and an escalator 104 arranged between the operation platform 103 and the base 101, and the limiting hole 106 is arranged on the operation platform 103. The vertical frame 102 may be formed by welding channel steel or i-steel with high strength. The stand 102 may be 7.5 metres in height and have a crown block located at its top to hoist the wellbore 1. An operation platform 103 is arranged in the middle of the stand 102, and a guardrail 105 is arranged around the operation platform 103. The operation platform 103 is fixedly connected with the stand 102, optionally, the operation platform 103 is welded to the stand 102, or, the operation platform 10 is screwed with the stand 102. Between the operation platform 103 and the base 101 there is arranged a ladder 104, which ladder 104 may be a vertical ladder or the ladder 104 may also be an inclined ladder forming an angle with the base 101. Protective handrails may also be provided on both sides of the stairs 104 to increase the safety of the operators. The bottom end of the staircase 104 and the base 101 can be welded, or the bottom end of the staircase 104 and the base 101 are fixedly connected through flanges; the top end of the escalator 104 and the operation platform 103 can be welded, or the top end of the escalator 104 and the operation platform 103 are fixedly connected through a flange.
The bottom end of the shaft 1 is fixed on the base 101, and optionally, the bottom end of the shaft 1 is connected with a flange through screw threads, and the flange is fixed on the base 101 through bolts.
With continued reference to fig. 5, the tripping device 4 according to the embodiment of the present invention includes a hook 41, a cable 42, a pulley 43 fixedly connected to the frame, and a hoist 44 communicatively connected to the control device, wherein one end of the cable 42 is fixedly connected to a drum of the hoist 44, and the other end of the cable 42 is fixedly connected to the hook 41 by passing around the pulley 43.
Specifically, the tripping device 4 includes a hook 41, a cable 42, a pulley 43, and a winch 44, wherein the pulley 43 is fixedly mounted on the top end of the stand 102 through a mounting seat, and the winch 44 may be an existing winch device, which is not limited in the embodiment of the present invention. One end of the cable 42 is fixedly connected to the drum of the hoist 44, and the other end of the cable 42 is fixedly connected to the hook 41 around the pulley 43.
Optionally, the tripping device 4 is provided with upper and lower positioning means to ensure tripping safety.
With reference to fig. 5, the operation of the device for evaluating the dynamic performance of the gel valve according to the embodiment of the present invention will be further described in detail:
and (3) starting the lowering device 4, setting the lowering speed to be 10cm/min and the lowering distance to be 3m (the lower end of the initial oil pipe 2 is positioned at the upper opening of the shaft 1), then starting a power supply of a winch 44, starting lowering the oil pipe 2 by using a lifting hook 41, and inserting the oil pipe 2 into the shaft 1 to the bottom of the shaft 1.
And (3) starting a liquid preparation device 9, preparing 20L of gel valve liquid, pouring the gel valve liquid into the shaft 1, opening an electric heating element of the shaft 1, setting the temperature to be 70 ℃, starting heating, and heating for 6 hours to make the gel colloid into gel.
And opening the data acquisition device to prepare data recording.
Adjusting the working parameters of the lifting device 4, setting the lifting speed to be 10cm/min, the lifting distance to be 10cm, limiting the total lifting stroke to be 3m, recording the real-time pressure change and the change of the gel valve 5, adding a small amount of water on the upper surface of the gel valve for observing gas conveniently, carrying out the next operation of lifting the oil pipe 2 after observing for 10min, and repeating the operation until the oil pipe 2 is completely pulled out of the gel valve 5.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description above, references to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A device for evaluating the dynamic performance of a gel valve is characterized by comprising a shaft, an oil pipe, an air source, a tripping device, a data acquisition device and a control device;
a gel valve is arranged in the shaft, and the shaft below the gel valve is provided with an air inlet communicated with the air source output port;
the tripping device is fixedly connected with the oil pipe so as to lower the oil pipe into the well bore or lift the oil pipe out of the well bore;
the data acquisition device comprises a pressure sensor arranged in the shaft below the gel valve, a temperature sensor arranged on the outer wall of the shaft, a speed sensor arranged on the oil pipe and a tension sensor arranged between the oil pipe and the lifting device, wherein the speed sensor is used for measuring the speed of the oil pipe when the oil pipe is lowered or lifted, and the tension sensor is used for measuring the tension of the oil pipe when the oil pipe is lowered or lifted;
the control device is in communication connection with the pressure sensor, the temperature sensor, the speed sensor and the tension sensor respectively;
the lifting speed is used for changing the lifting speed on the premise of keeping other conditions unchanged so as to observe the influence of the lifting speed on the air tightness of the gel valve; or the tension is used for taking the tension of the lifting device as a variable so as to observe the influence of the tension on the air tightness of the gel valve.
2. The jelly valve dynamic performance evaluation device according to claim 1, wherein an observation window is provided in the wellbore.
3. The dynamic performance evaluation device for the gel valve according to claim 2, wherein the observation windows are arranged in plurality at intervals along the circumferential direction of the well bore, and a preset distance is provided between two adjacent observation windows along the axial direction of the well bore.
4. The jelly valve dynamic performance evaluation device according to claim 1, wherein an overflow port is provided at a top end of the shaft; the device for evaluating the dynamic performance of the gel valve further comprises an overflow pipe fixedly connected with the overflow port.
5. The jelly valve dynamic performance evaluation device according to claim 4, wherein a drain port is provided at a bottom end of the shaft, and the jelly valve dynamic performance evaluation device further comprises a drain pipeline fixedly connected with the drain port.
6. The jelly valve dynamic performance evaluation device according to any one of claims 1 to 5, further comprising a liquid preparation device comprising a liquid preparation container, a stirrer, a liquid outlet pipe and a liquid outlet valve mounted on the liquid outlet pipe;
the upper end of the liquid preparation container is provided with a feed inlet, and the lower end of the liquid preparation container is provided with a liquid outlet;
the liquid outlet pipe is respectively connected with the liquid outlet and the shaft;
the stirrer comprises a stirring motor and a stirring rod fixedly connected with an output shaft of the stirring motor, and the stirring rod is positioned in the liquid preparation container.
7. The jelly valve dynamic performance evaluation device according to claim 6, further comprising an electric heating element disposed outside the wellbore.
8. The jelly valve dynamic performance evaluation device according to any one of claims 1 to 5, further comprising a derrick including a base and a bracket provided on the base, the bracket being provided with a stopper hole;
the bottom end of the shaft is fixed on the base, and the top end of the shaft is located in the limiting hole.
9. The jelly valve dynamic performance evaluation device according to claim 8, wherein the support comprises a stand fixedly connected with the base, an operating platform fixedly connected with the stand, and an escalator arranged between the operating platform and the base, and the limiting hole is arranged on the operating platform.
10. The jelly valve dynamic performance evaluation device according to claim 8, wherein the lifting device comprises a lifting hook, a cable, a pulley fixedly connected with the support and a winch in communication connection with the control device, one end of the cable is fixedly connected with a winding drum of the winch, and the other end of the cable is fixedly connected with the lifting hook by passing through the pulley.
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