CN112855095B - Underground in-situ retrievable online profile control device, tubular column and method - Google Patents
Underground in-situ retrievable online profile control device, tubular column and method Download PDFInfo
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- CN112855095B CN112855095B CN202110150862.2A CN202110150862A CN112855095B CN 112855095 B CN112855095 B CN 112855095B CN 202110150862 A CN202110150862 A CN 202110150862A CN 112855095 B CN112855095 B CN 112855095B
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000003068 static effect Effects 0.000 claims abstract description 43
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 230000007704 transition Effects 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 32
- 238000002955 isolation Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 19
- 239000000839 emulsion Substances 0.000 claims description 13
- 210000002445 nipple Anatomy 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims 1
- 239000013043 chemical agent Substances 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000012452 mother liquor Substances 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 239000000284 extract Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000010413 mother solution Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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- 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
-
- 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
- E21B43/20—Displacing by water
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses an in-situ salvageable type online profile control device, a tubular column and a method in a well, wherein the device comprises an internal salvage joint, a demulsifier, a transition joint, a static mixer shell, a static mixing unit, a bottom end guide positioning seat and the like; the pipe column comprises an underground safety valve arranged on an oil pipe, a cable-passing packer, a Y-shaped component, an electric submersible pump unit, a positioning bypass, a first insert seal, a second insert seal and a guide plug, wherein water distributors are respectively arranged between the first insert seal and the second insert seal and between the second insert seal and the guide plug; during profile control operation, the throwing-fishing type online profile control device is thrown into the Y-shaped component, and the electric submersible pump unit extracts water from the water source layer and chemical agent mother liquor injected from the ground to form chemical agent to be injected into a target layer under the mixing action of the static mixing unit. The invention realizes the underground online profile control technology of the same-well self-flowing water injection well, and realizes the conversion of water injection operation and profile control operation under the condition of no moving of a pipe column.
Description
Technical Field
The invention belongs to the technical field of oil extraction engineering, and particularly relates to an underground in-situ retrievable online profile control device, a tubular column and a method.
Background
At present, the oil field development enters the middle and later stages, a water injection mode is usually adopted to improve the recovery ratio, the injected water is generally injected into the underground from a wellhead after ground treatment, however, offshore oil field production operation is limited by platform space and equipment, no ground water source can be injected, and meanwhile, part of wells need to be injected, so that the gravity flow water injection process technology is adopted for the same well with a water source layer, namely, the water of the water source layer in the same well is pressurized by an electric submersible pump and then injected into other layers of the well.
For the well adopting the same-well artesian water injection technology, after the stratified injection is carried out for a period of time, because of large interval pressure difference and uneven water absorption, in order to improve the water absorption profile and the oil reservoir utilization degree, the stratified profile control operation is needed to improve the water drive efficiency. However, the existing online profile control technology of offshore oil fields is to mix profile control agent mother liquor and ground water source on the ground to form a profile control agent and then inject the profile control agent into the well, and the underground in-situ online profile control technology is not reported yet and still is in a technology blank stage.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a retrievable online profile control device, and an underground in-situ online profile control tubular column and an underground in-situ online profile control method for a same-well self-flowing water injection well based on the device.
The invention is realized by the following technical scheme:
an in-situ salvageable type online profile control device in a well comprises an internal fishing joint, a transition joint, a static mixer, a bottom end guide positioning seat, a demulsifying device, a corrugated pipe body and a compressed liquid passing ring;
the lower end of the inner salvaging connector is connected with a transition connector, the lower end of the transition connector is connected with a static mixer, and the lower end of the static mixer is connected with a bottom end guide positioning seat; a demulsifying device, a corrugated pipe body and a pressing liquid passing ring are arranged in the internal fishing joint from top to bottom;
the static mixer comprises a static mixer shell, a static mixing unit and a static mixer bottom end connector; and a static mixing unit is arranged in the static mixer shell, and the lower end of the static mixer shell is connected with a bottom end connector of the static mixer.
In the technical scheme, the pressing liquid passing ring is provided with an annular liquid passing hole and a middle threaded hole, and the middle threaded hole is in threaded connection with external threads at the lower end of the corrugated tubular body.
In the technical scheme, the upper end of the corrugated tubular body is of a conical guide structure, the middle of the corrugated tubular body is of a multi-channel circular convex structure, and a small-gap liquid passing channel is formed between the circular convex structure and the inner hole at the lower end of the emulsion breaker.
In the technical scheme, the upper end of the emulsion breaker is provided with an emulsion breaking hole, and the upper end and the lower end of the emulsion breaking hole are respectively of a conical structure.
In the technical scheme, four long-strip-shaped liquid passing holes are uniformly distributed in the middle of the transition joint in the circumferential direction.
In the above technical scheme, the static mixing unit is composed of four sets of right helical blades and left helical blades arranged along an axis, all the right helical blades and the left helical blades are circumferentially staggered by 90 degrees and welded at a contact point to form a whole.
In the technical scheme, the throwing and fishing type online profile control device finishes the throwing and fishing operation in a steel wire operation mode.
In the technical scheme, the retrievable online profile control device can be used for selecting a demulsifying device according to the demulsification requirement.
An underground in-situ retrievable online profile control tubular column is arranged in a casing and comprises an underground safety valve, a cable-passing packer, a Y-shaped component, an electric submersible pump unit, a positioning bypass, a first inserting seal, a second inserting seal and a guide plug, which are sequentially arranged on an oil pipe from top to bottom;
an original well top packer is arranged between the positioning bypass and the well wall, the positioning bypass is matched and positioned with the original well top packer, and four liquid passing channels are uniformly distributed in the circumferential direction of an annular boss of the positioning bypass. A first original well isolation packer is arranged between the first insertion seal and the well wall, a second original well isolation packer is arranged between the second insertion seal and the well wall, and an original well bottom packer is arranged on the well wall at the guide plug; a water source layer is formed between the original well top packer and the first original well isolation packer, and an injection layer is respectively formed between the first original well isolation packer and the second original well isolation packer and between the second original well isolation packer and the original well bottom packer;
the Y-shaped assembly comprises a lifting sealing short section, a three-way joint, a double male short section and a seating joint;
an upper end internal thread hole, a lower end left side internal thread hole and a lower end right side internal thread hole are formed in the upper end and the lower end of the three-way joint respectively, and the upper end internal thread hole, the lower end left side internal thread hole and the lower end right side internal thread hole are communicated with each other internally to form a first liquid passing channel and a second liquid passing channel;
an upper-end internal thread hole of the three-way joint is in threaded connection with a lower-end external thread of the lifting sealing nipple, and an upper-end external thread of the lifting sealing nipple is connected with an upper-portion oil pipe;
an internal thread hole on the left side of the lower end of the three-way joint is in threaded connection with an external thread on the upper end of the double male short joint, and an external thread on the lower end of the double male short joint is connected with an electric submersible pump unit;
the right inner threaded hole at the lower end of the three-way joint is in threaded connection with the outer thread at the upper end of the seating joint,
the internal installation of Y type subassembly can throw and drag for online profile control device of formula.
In the technical scheme, the three-way joint is provided with cable passing channels which are symmetrically arranged on two sides and can pass through the power cable of the electric pump.
In the technical scheme, the lifting sealing short section is of a tubular structure and is internally provided with a necking sealing hole, and the necking sealing hole is matched and sealed with the outer side cylindrical surface of the upper end of the inner fishing joint.
The underground in-situ online profile control method is implemented by the underground in-situ online profile control tubular column and comprises the following steps of:
(1) In the initial stratified water injection stage, the retrievable online profile control device is not placed in the Y-shaped component, when water is injected for a period of time and profile control is needed, a water injection measuring and regulating instrument is put into the system to open an injection allocation device in a layer section needing to be injected with a chemical agent and close injection allocation devices in other layer sections, and the retrievable online profile control device is delivered into the Y-shaped component;
(2) Starting an electric submersible pump unit to produce, and after the water of a water source layer is pressurized, sequentially flowing through a first liquid passing channel g1 and a second liquid passing channel g2 of the Y-shaped component to enter the interior of the transition joint; meanwhile, injecting chemical agent mother liquor into the ground through an oil pipe, performing primary demulsification through a demulsification hole of the demulsifying device, performing secondary demulsification through an annular channel between the demulsifying device and the corrugated pipe body, and finally entering the interior of the transition joint. After the water of the water source layer and the chemical agent mother solution are preliminarily mixed in the transition joint, the water and the chemical agent mother solution enter a static mixing unit to be fully mixed to form a chemical agent, and the chemical agent is finally injected into a target layer section through an opened injection allocation device;
(3) When the first layer of profile control operation is finished and the profile control of other layers needs to be continued, fishing out the retrievable online profile control device from the ground, and repeating the steps (1) and (2);
(4) And after the profile control operation of all the intervals is finished, fishing out the fishing type online profile control device to the ground, and recovering the water injection operation.
The invention has the advantages and beneficial effects that:
the retrievable online profile control device can obtain an underground in-situ online profile control tubular column and a method for the same-well self-flowing water injection well, realize the conversion of water injection operation and profile control operation under the condition of no tubular column movement, avoid the repeated tripping of the tubular column, fully utilize a single-well water source and realize the underground online profile control of the same-well self-flowing water injection well.
Drawings
FIG. 1 is a schematic structural diagram of the retrievable online profile control device of the invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
FIG. 4 is a schematic structural diagram of a static mixing unit in the retrievable online profile control device according to the present invention;
FIG. 5 is an enlarged view of a portion C of FIG. 1;
FIG. 6 is a schematic diagram showing the in-place state of the retrievable online profile control device of the present invention;
FIG. 7 is an enlarged view of portion D of FIG. 6;
FIG. 8 is an axial cross-sectional view of the tee in the Y-assembly of the present invention;
FIG. 9 is an isometric view of a tee fitting in the Y-assembly of the present invention;
FIG. 10 is a schematic view of the structure of the landing nipple of the Y-assembly of the present invention;
FIG. 11 is a schematic structural diagram of a lifting seal sub in the Y-type assembly of the present invention;
FIG. 12 is an enlarged view of a portion E of FIG. 6;
FIG. 13 is a schematic structural view of the retrievable online profile control apparatus of the present invention without a demulsifier;
FIG. 14 is a schematic view of the downhole in situ on-line profile control string of the present invention;
FIG. 15 is a schematic view of the positioning bypass of the present invention;
FIG. 16 is a schematic view of the positioning bypass of the present invention;
FIG. 17 is a schematic view of the flow of fluid in a dispensing state of the Y-module of the present invention.
Reference numerals: 1. a downhole safety valve; 2. a cable-passing packer; 3. a Y-shaped component 4 and a throwing and fishing type online profile control device; 5. positioning a bypass; 6. a first insert seal; 7. an injection distributor; 8. a second insert seal; 9. a guide plug; 10. an electric submersible pump unit; 11. a packer at the top of the original well; 12. a primary well isolation packer 1; 13. a primary well isolation packer 2; 14. and a packer at the bottom of the original well.
301. Lifting the sealing short section; 302. a three-way joint; 303. a double male short section; 304. the joint is seated.
401. Internally fishing out the joint; 402. a demulsifying device; 403. a bellows-shaped body; 404. compressing the liquid passing ring; 405. a transition joint; 406. a static mixer housing; 407. a static mixing unit; 407-1, right helical pieces; 407-2, left helical pieces; 408. a bottom end joint of the static mixer; 409. bottom end direction positioning seat.
For a person skilled in the art, without inventive effort, other relevant figures can be derived from the above figures.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the technical solutions of the present invention are further described below with reference to specific examples.
Examples
In a first aspect, as shown in fig. 1, 2, and 3, the present invention provides a retrievable online profile control device 4, which includes an inner fishing joint 401, wherein two dovetail grooves are arranged on an outer side cylindrical surface of an upper end of the inner fishing joint 401, and a sealing ring is installed on the dovetail grooves, a hole-shaped structure is arranged inside the middle of the inner fishing joint 401, a hole-enlarging structure is arranged at a position away from a top end of the inner fishing joint, a neck hole is arranged at a lower portion of the hole-enlarging structure, a straight step surface is formed at a lower end of the neck hole, and an upper end surface of a demulsifier 402 is positioned. The lower end of the internal fishing joint 401 is in threaded connection with an internal threaded hole of the transition joint 405 through external threads, a compressed liquid passing ring 404 is installed between the lower end face of the internal fishing joint 401 and a tool withdrawal step face of the internal threaded hole of the transition joint 405, and the upper end face of the compressed liquid passing ring 404 and the lower end face of the emulsion breaker 402 are compressed and positioned.
The pressing liquid passing ring 404 is provided with an annular liquid passing hole and a middle threaded hole, the middle threaded hole is in threaded connection with external threads at the lower end of the corrugated tubular body 403, the upper end of the corrugated tubular body 403 is of a conical guide structure, the middle of the corrugated tubular body 403 is of a multi-channel circular protruding structure, a small-gap liquid passing channel is formed between the circular protruding structure and the inner hole at the lower end of the emulsion breaker 402, the upper end of the emulsion breaker 402 is provided with an emulsion breaking hole, and the upper end and the lower end of the emulsion breaking hole are of conical structures respectively.
As shown in fig. 3, four long-strip-shaped liquid passing holes are uniformly distributed in the middle of the transition joint 405 in the circumferential direction, the external threads at the lower end of the transition joint 405 are in threaded connection with the internal threads at the upper end of the static mixer housing 406, the external threads at the lower end of the static mixer housing 406 are in threaded sealing connection with the internal threads at the bottom end of the static mixer housing 408, and the static mixer housing 406 is internally provided with a static mixing unit 407.
As shown in fig. 4, the static mixing unit 407 is composed of four sets of right and left spiral blades 407-1 and 407-2 arranged along the axis, all the right and left spiral blades 407-1 and 407-2 are circumferentially staggered by 90 ° and welded at the contact point to form a whole. As shown in fig. 1, the upper and lower ends of the static mixer 407 are respectively pressed and positioned with the lower step surface of the upper necking hole of the static mixer housing 406 and the step surface of the relief groove of the internal thread hole of the bottom end connector 408 of the static mixer.
As shown in fig. 5, the center of the static mixer bottom end joint 408 is a through hole, and its lower end external thread is in threaded connection with the internal thread hole of the bottom end guide positioning seat 409, the center of the bottom end guide positioning seat 409 is a through hole, and its outer cylindrical surface is provided with a positioning step, and two dovetail grooves are provided below the positioning step and are provided with sealing rings. The outer side of the lower end of the bottom end guide positioning seat 409 is provided with a large chamfer guide structure.
As shown in fig. 6, 7 and 10, the positioning step of the bottom end guide positioning seat 409 is positioned in cooperation with the conical step surface of the middle hole of the seat joint 304, and the outer cylindrical surface of the lower end of the bottom end guide positioning seat 409 is sealed in cooperation with the inner hole of the upper end of the seat joint 304. As shown in fig. 7, the upper end external thread of the seating nipple 304 is screwed with the lower end right side internal thread hole of the three-way nipple 302. As shown in fig. 8 and 9, the three-way joint 302 is a cylindrical structure, cable passing passages capable of passing through an electric pump power cable are symmetrically arranged on two sides of the three-way joint 302, an upper end internal threaded hole, a lower end left side internal threaded hole and a lower end right side internal threaded hole are respectively arranged at the upper end and the lower end of the three-way joint 302, and the upper end internal threaded hole, the lower end left side internal threaded hole and the lower end right side internal threaded hole are all internally communicated to form a first liquid passing passage g1 and a second liquid passing passage g2. As shown in fig. 6, the left-side internal threaded hole at the lower end of the three-way joint 302 is in threaded connection with the external thread at the upper end of the double male nipple 303, and the external thread at the lower end of the double male nipple 303 is connected with the electrical submersible pump unit 10. The upper end internal thread hole of the three-way joint 302 is in threaded connection with the lower end external thread of the lifting sealing short joint 301. As shown in fig. 11 and 12, the lifting sealing nipple 301 has a tubular structure and is provided with a necking sealing hole therein, and the necking sealing hole is in fit sealing with the outer cylindrical surface of the upper end of the inner fishing joint 401. The external thread at the upper end of the lifting sealing short joint 301 is connected with an upper oil pipe.
The throwing and fishing type online profile control device 4 adopts a steel wire operation mode to complete throwing and fishing operation.
As shown in fig. 13, the retrievable online profile control device can select a demulsifying device according to the demulsification requirement.
In a second aspect, the present invention provides a downhole in-situ online profile control string, as shown in fig. 14, the downhole in-situ online profile control string is arranged in a casing and includes a downhole safety valve 1, a cable-passing packer 2, a Y-type component 3, an electrical submersible pump unit 10, a positioning bypass 5, a first insert seal 6, a second insert seal 8 and a guiding plug 9, which are sequentially arranged on an oil pipe from top to bottom, a water distributor 7 is respectively arranged between the first insert seal 6 and the second insert seal 8 and between the second insert seal 8 and the guiding plug 9, an original well top packer 11 is arranged between the positioning bypass 5 and a well wall, a first original well isolation packer 12 is arranged between the first insert seal 6 and the well wall, a second original well isolation packer 13 is arranged between the second insert seal 8 and the well wall, and an original well bottom packer 14 is arranged on the well wall at the guiding plug 9.
As shown in fig. 15 and 16, an upper internal thread hole and a lower external thread of the positioning bypass 5 are respectively connected with an oil pipe, an annular boss is arranged in the middle of the outer side of the positioning bypass 5, a step is arranged in the middle of the annular boss, the step is matched and positioned with the original well top packer 11, and four liquid passing channels are uniformly distributed in the circumferential direction of the annular boss of the positioning bypass 5 and used for establishing a communication channel between a water source layer and an upper sleeve.
The inside of the Y-shaped component 3 is provided with a throwing and fishing type online profile control device 4.
A water source layer is formed between the original well top packer 11 and the first original well isolation packer 12, and an injection layer is respectively formed between the first original well isolation packer 12 and the second original well isolation packer 13 and between the second original well isolation packer 13 and the original well bottom packer 14.
In a third aspect, the present invention provides a downhole in-situ online profile control method, wherein the downhole online profile control is implemented by the downhole in-situ online profile control tubular column, and the method comprises the following steps:
(1) In the initial stratified water injection stage, the retrievable online profile control device 4 is not placed in the Y-shaped component 3, when water is injected for a period of time and profile control is needed, a water injection measuring and regulating instrument is put in to open the injection allocation device of the layer section needing to be injected with the chemical agent and close the injection allocation devices of other layer sections, and the retrievable online profile control device 4 is delivered into the Y-shaped component 3;
(2) Starting the electric submersible pump unit to produce, as shown in fig. 6, after the water in the water source layer is pressurized, the water flows through the first liquid passing channel g1 and the second liquid passing channel g2 of the Y-shaped component 3 in sequence and enters the transition joint 405; meanwhile, chemical agent mother liquor is injected from an oil pipe to the ground, primary demulsification is carried out through a demulsification hole of the demulsification device 402, secondary demulsification is carried out through an annular channel between the demulsification device 402 and the corrugated tubular body 403, and finally the obtained product enters the transition joint 405. After the water and the chemical mother liquor of the water source layer are primarily mixed in the transition joint 405, the water and the chemical mother liquor enter the static mixing unit 407 to be fully mixed to form a chemical agent, and the chemical agent is finally injected into a target layer section through the opened water distributor;
(3) When the first layer of profile control operation is finished and the profile control of other layers is required to be continued, fishing out the retrievable online profile control device 4 from the ground, and repeating the steps (1) and (2);
(4) After the profile control operation for all the intervals is finished, as shown in fig. 13, the retrievable online profile control device 4 is fished out from the ground, and the water injection operation is resumed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. 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.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (7)
1. The utility model provides an online profile control tubular column of formula of salvaging can be thrown to normal position in pit which characterized in that: the pipe column is arranged in a casing and comprises a downhole safety valve, an over-cable packer, a Y-shaped component, an electric submersible pump unit, a positioning bypass, a first insertion seal, a second insertion seal and a guide plug which are sequentially arranged on an oil pipe from top to bottom;
an original well top packer is arranged between the positioning bypass and the well wall, the positioning bypass is matched and positioned with the original well top packer, four liquid passing channels are uniformly distributed and arranged in the circumferential direction of an annular boss of the positioning bypass, a first original well isolation packer is arranged between the first insertion seal and the well wall, a second original well isolation packer is arranged between the second insertion seal and the well wall, and an original well bottom packer is arranged on the well wall at the guide plug; a water source layer is formed between the original well top packer and the first original well isolation packer, and an injection layer is respectively formed between the first original well isolation packer and the second original well isolation packer and between the second original well isolation packer and the original well bottom packer;
the Y-shaped assembly comprises a lifting sealing short section, a three-way joint, a double male short section and a seating joint;
an upper end internal thread hole, a lower end left side internal thread hole and a lower end right side internal thread hole are formed in the upper end and the lower end of the three-way joint respectively, and the upper end internal thread hole, the lower end left side internal thread hole and the lower end right side internal thread hole are communicated internally to form a first liquid passing channel and a second liquid passing channel;
an upper-end internal thread hole of the three-way joint is in threaded connection with a lower-end external thread of the lifting sealing nipple, and an upper-end external thread of the lifting sealing nipple is connected with an upper oil pipe;
an internal thread hole on the left side of the lower end of the three-way joint is in threaded connection with an external thread on the upper end of the double male short joint, and an external thread on the lower end of the double male short joint is connected with an electric submersible pump unit;
the right inner threaded hole at the lower end of the three-way joint is in threaded connection with the outer thread at the upper end of the seating joint,
a retrievable online profile control device is arranged in the Y-shaped component;
the on-line profile control device comprises an inner fishing joint, a transition joint, a static mixer, a bottom end guide positioning seat, a demulsifying device, a corrugated pipe body and a pressing liquid passing ring, wherein the inner fishing joint is arranged on the inner side of the inner fishing joint;
the lower end of the inner salvaging connector is connected with a transition connector, the lower end of the transition connector is connected with a static mixer, and the lower end of the static mixer is connected with a bottom end guide positioning seat; a demulsifier, a corrugated pipe body and a compaction liquid passing ring are arranged in the internal fishing joint from top to bottom;
the static mixer comprises a static mixer shell, a static mixing unit and a static mixer bottom end connector; and a static mixing unit is arranged in the static mixer shell, and the lower end of the static mixer shell is connected with a bottom end connector of the static mixer.
2. The in-situ retrievable online profile control tubular column in a well according to claim 1, wherein: the pressing liquid passing ring is provided with an annular liquid passing hole and a middle threaded hole, and the middle threaded hole is in threaded connection with external threads at the lower end of the corrugated tubular body.
3. The in-situ retrievable online profile control tubular column in the well according to claim 1, wherein: the upper end of the corrugated pipe body is a conical guide structure, the middle of the corrugated pipe body is a plurality of circular convex structures, and a small-gap liquid passing channel is formed between each circular convex structure and the inner hole at the lower end of the emulsion breaker.
4. The in-situ retrievable online profile control tubular column in a well according to claim 1, wherein: the upper end of the emulsion breaker is provided with an emulsion breaking hole, and the upper end and the lower end of the emulsion breaking hole are respectively of a conical structure.
5. The in-situ retrievable online profile control tubular column in a well according to claim 1, wherein: four long-strip-shaped liquid passing holes are uniformly distributed in the middle of the transition joint in the circumferential direction.
6. The in-situ retrievable online profile control tubular column in a well according to claim 1, wherein: the static mixing unit consists of four groups of right spiral plates and left spiral plates which are arranged along the axis, all the right spiral plates and the left spiral plates are circumferentially staggered by 90 degrees and welded at contact points to form a whole.
7. The in-situ retrievable online profile control tubular column in a well according to claim 1, wherein: the three-way joint is symmetrically provided with cable passing channels which can pass through the power cable of the electric pump at two sides.
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| MX169284B (en) * | 1988-07-14 | 1993-06-28 | Occidental Petroleum Canada | PROCEDURE FOR PREPARING AN ACIETE EMULSION IN AQUEOUS PHASE |
| CN2631622Y (en) * | 2003-06-12 | 2004-08-11 | 大庆油田有限责任公司 | Rotary water flow static mixer |
| CN101270649B (en) * | 2008-04-24 | 2011-10-26 | 中国海洋石油总公司 | Down-hole high pressure screw pump polymer injector system |
| CN101525991B (en) * | 2009-04-13 | 2012-11-14 | 中国海洋石油总公司 | Hydraulic-driven mixer for injection |
| CN202788787U (en) * | 2012-07-16 | 2013-03-13 | 中国石油天然气股份有限公司 | Profile control string using nitrogen and foam gel |
| CN208396696U (en) * | 2018-05-09 | 2019-01-18 | 中国海洋石油集团有限公司 | It is a kind of to mix the defeated device of dilute collection for viscous crude Produced Liquid |
| CN110513088B (en) * | 2018-05-22 | 2021-09-28 | 中国石油天然气股份有限公司 | Annotate accent ware |
| CN209093166U (en) * | 2018-11-07 | 2019-07-12 | 北京东晟世纪科技有限公司 | One kind being used for the online profile control blending device of offshore oilfield water injection well emulsion polymer |
| CN209752780U (en) * | 2019-01-17 | 2019-12-10 | 中国石油集团工程技术研究院有限公司 | Clean fracturing fluid preparation device |
| CN211819354U (en) * | 2020-03-19 | 2020-10-30 | 陕西万博石油化工科技有限责任公司 | Polymer microsphere deep profile control and oil displacement increasing device |
| CN111577228B (en) * | 2020-04-23 | 2022-08-23 | 山东瑞恒兴域石油技术开发有限公司 | Nitrogen atomization dispersion composite additive thickened oil cold recovery method |
| CN112227968A (en) * | 2020-11-13 | 2021-01-15 | 中国海洋石油集团有限公司 | Y-joint for slim hole and layered oil production completion string |
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