CN113137213A - Integrated device for testing, adjusting and checking sealing of separate injection well - Google Patents
Integrated device for testing, adjusting and checking sealing of separate injection well Download PDFInfo
- Publication number
- CN113137213A CN113137213A CN202110365690.0A CN202110365690A CN113137213A CN 113137213 A CN113137213 A CN 113137213A CN 202110365690 A CN202110365690 A CN 202110365690A CN 113137213 A CN113137213 A CN 113137213A
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- sealing
- adjusting
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The invention relates to a separate injection well measurement, adjustment and seal inspection integrated device which is applied to underground separate layer injection of an oil field. The device comprises an underground separate injection pipe column and a measuring, adjusting and sealing checking system, wherein the measuring, adjusting and sealing checking system comprises an integrated measuring, adjusting and sealing checking instrument, and the integrated measuring, adjusting and sealing checking instrument comprises a control unit, a flow sensor, an internal pressure sensor, an upper motor, a lead screw, an axial positioning unit, an upper sealing unit, a lower sealing unit, an external pressure sensor, a circumferential positioning unit and a rotating unit. The axial positioning unit comprises a positioning block provided with an axial anti-blocking sliding groove, and the lead screw is provided with upper and lower setting threads with opposite rotation directions. The flow sensor is an electromagnetic flow sensor. The sealing part is a compression type rubber cylinder or a leather cup. The upper and lower setting threads are trapezoidal threads. Because the integrated testing, adjusting and sealing tester is provided with the two-stage packing element and the setting mechanism thereof, and is matched with the high-efficiency water distributor, the testing, adjusting, pressure measuring and sealing testing operation can be completed in one time.
Description
Technical Field
The invention relates to the technical field of layered water injection in oil field development of the petroleum industry, in particular to a logging, adjusting and seal checking integrated device for a separate injection well.
Background
In the process of oil field development, separated layer water injection is one of the most important technologies for improving the oil field recovery efficiency. Through many years of attack and popularization, the current measurement and regulation integrated stratified water injection technology is widely applied to various domestic oil fields. The technology is divided into two parts of a downhole separate injection pipe column and a measuring and adjusting system. The downhole separate injection pipe column comprises a separate layer packer and an adjustable water distributor. The testing and adjusting system comprises a surface controller, a cable and a downhole testing and adjusting instrument. The technology utilizes an underground measuring and adjusting instrument to adjust the water nozzle of the adjustable water distributor and simultaneously test the water injection amount. Compared with the prior art, the method has the advantages of simple process operation and quick aging. If the layered packer needs to be tested or a certain injection layer needs to be tested, another set of instrument needs to be put in for testing, and the operation aging still needs to be improved.
In order to achieve the purpose, the Chinese patent 'bridge type measuring, adjusting, seal checking and pressure measuring integrated high-efficiency water distributor', patent application No. 201910485084.5, application No. 2019.06.05, discloses a water distributor capable of matching with an instrument to complete measuring, adjusting, seal checking and pressure measuring in one-time well descending, but does not disclose a matched measuring and adjusting instrument.
Chinese patent "bidirectional sealed flow-collecting type flow regulator", application No. 201510973113.4, application No. 2015.12.22, discloses a measuring and regulating instrument with double-cup sealing mechanism. Compared with other testing and adjusting instruments, the testing and adjusting instrument realizes the flow concentration test, reduces the lower limit of the flow test and improves the test precision. The sealing leather cup can only realize one-way sealing, namely, the sealing is realized by the pressure above the leather cup. The instrument does not have the functions of packer seal checking and pressure measurement aiming at a certain layer.
Disclosure of Invention
In order to solve the technical problems, the invention discloses an integrated device for measuring, adjusting, testing and sealing of a separate injection well, which realizes that an instrument can finish three operations of measuring and adjusting the flow of separated injection water, testing and sealing a packer and measuring the pressure of a certain layer when going down the well once, improves the operation time efficiency and reduces the operation cost compared with the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
divide the well logging to examine and transfer and test and seal integrated device, including the underground string of dividing and measure and transfer and examine a system of sealing, the survey and transfer examine and seal the system including the integration survey and transfer and examine a appearance, the integration survey and transfer examine and seal the appearance and include: the device comprises a control unit, a flow sensor, an internal pressure sensor, an upper motor, an axial positioning unit, a circumferential positioning unit, an upper packing unit, a lower packing unit, an external pressure sensor and a rotating unit;
the control unit is electrically connected with the ground controller through a cable; the control unit is used for receiving the instruction of the ground controller, controlling the forward rotation or the reverse rotation of the upper motor and the lower motor, receiving the test signal of the sensor and transmitting the test signal to the ground controller; the upper motor, the lower motor, the internal pressure sensor, the external pressure sensor and the flow sensor are electrically connected with the control unit;
the upper motor is connected with a screw rod through an upper coupler;
the axial positioning unit, the upper packing unit and the lower packing unit are driven by the lead screw; the axial positioning unit comprises a positioning block provided with an axial anti-blocking sliding groove, and a pin shaft for fixing the positioning block is arranged in the anti-blocking sliding groove; the lead screw is provided with an upper setting thread and a lower setting thread with opposite rotation directions; the upper setting block is in threaded connection with the lead screw through an upper setting thread, and the lower setting block is in threaded connection with the lead screw through a lower setting thread; the side wall of the instrument shell is provided with a radial through groove; the upper end of the upper extrusion ring is contacted with an upper sealing part sleeved on the outer shell of the instrument, and the lower part of the upper extrusion ring radially penetrates through the penetrating groove and is axially connected with the upper setting block; the lower end of the lower extrusion ring is in contact with a lower sealing part sleeved on the outer shell of the instrument, and the lower part of the lower extrusion ring radially penetrates through the penetrating groove and is axially connected with the lower setting block;
the external pressure sensor tests the pressure between the upper packing unit and the lower packing unit through the external pressure transmission hole;
the axial positioning unit, the circumferential positioning unit, the upper packing unit, the lower packing unit and the rotating unit are arranged from top to bottom.
As some possible implementation examples, the upper pressing ring and the upper setting block are connected by radial shoulders or are connected by screws or welded. The lower extrusion ring and the lower setting block are connected by radial shoulders or connected by screws or welded.
In a preferred embodiment, the lead screw is in the shape of a round tube, and a lead wire passes through the lead screw.
In a preferred embodiment, the flow sensor is an electromagnetic flow sensor.
As a possible example, the upper and lower packing members are compression-type rubber cartridges or leather cups.
Preferably, the upper setting thread and the lower setting thread are trapezoidal threads.
Compared with the prior art, the technical advantages of the invention at least comprise:
1. according to the device, the upper and lower two-stage packing elements and the setting mechanism thereof are arranged on the integrated testing, adjusting and sealing tester, and the pressure measuring device and the pressure measuring channel are arranged on the matched bridge type testing, adjusting, sealing and pressure measuring integrated high-efficiency water distributor and are matched with each other, so that the device can perform layered water injection testing and adjusting operation, and can perform pressure measuring operation and sealing checking operation on a certain water injection layer. The device can complete all operations by one-time well descending, and has the advantages of high operation timeliness, simpler process and less operation cost.
2. Because set up anti-sticking spout on axial positioning unit's locating piece, when the instrument of lifting up meets the card, the locating piece can be followed anti-sticking spout and automatic shrink to prevent that the instrument from being blocked.
3. Because the packing part uses a compression type rubber cylinder or a leather cup which is oppositely arranged, the packing sealing pressure is high, and the work is reliable.
Drawings
A more complete appreciation of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein the accompanying drawings are included to provide a further understanding of the invention and form a part of this specification, and the illustrated embodiments and descriptions thereof are intended to illustrate and not limit the invention. Wherein:
fig. 1 is a structural schematic diagram of an integrated measuring, adjusting and seal checking instrument.
Fig. 2 is a schematic structural diagram of the overall structure of the integrated device for testing, adjusting and sealing of the separate injection well.
Fig. 3 is a sectional view a-a in fig. 1.
FIG. 4 is a schematic diagram of another embodiment of the packing unit.
In the figure:
1-cable, 2-control unit, 3-flow sensor, 4-internal pressure sensor, 5-instrument shell, 6-upper motor, 7-upper coupler, 8-positioning block, 9-spring, 10-anti-blocking chute, 11-pin shaft, 12-opening fixing frame, 13-positioning screw thread, 14-circumferential positioning unit, 15-lead screw, 16-upper sealing ring, 17-upper extrusion ring, 18-upper setting screw thread, 19-upper setting block, 20-passing groove, 21-lower setting screw thread, 22-lower setting block, 23-lower extrusion ring, 24-lower sealing ring, 25-external pressure transmission hole, 26-external pressure sensor, 27-lower motor, 28-lower coupler, 29-speed reducer, 30-a torque transmission mechanism, 31-a ground controller,
100-axial positioning unit, 200-upper packing unit, 300-lower packing unit, 400-rotating unit,
501-packer two, 502-oil layer two, 503-bridge type testing, adjusting, seal testing and pressure measuring integrated high-efficiency water distributor (hereinafter referred to as high-efficiency water distributor), 504-packer three, 505-integrated testing, adjusting and seal testing instrument.
Detailed Description
In the present specification and claims, the terms "upper" and "lower" in terms of positional relationship are described in terms of positional relationship in a state where the apparatus is run into a well. When the relation of inside, outside or inside and outside of the pipe is described, the small radius is taken as inside or inside in the radial direction, and the large radius is taken as outside. The parts with seals in the drawings are shown in the figures and are not described in detail in the following description.
In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.
Referring to the attached figure 2, the integrated device for testing, adjusting and checking the sealing of the separate injection well comprises a separate injection pipe column and a testing, adjusting and checking system in the well.
The downhole separate injection string is installed underground and comprises a packer and a high-efficiency water distributor which are connected by an oil pipe, wherein the packer is used for sealing an oil layer, as shown in figure 2, a second packer 501 and a third packer 504 are respectively installed above and below a second oil layer 502, one high-efficiency water distributor is installed on the oil pipe aiming at each oil layer, and as shown in figure 2, a high-efficiency water distributor 503 is installed corresponding to the second oil layer 502.
The Chinese patent 'bridge type measuring, adjusting, sealing and pressure measuring integrated high-efficiency water distributor', patent application No. 201910485084.5, application No. 2019.06.05, discloses a high-efficiency water distributor.
Packers are known in the art.
The measuring, adjusting and seal-checking system comprises a ground controller 31, a cable 1 and an integrated measuring, adjusting and seal-checking instrument 505.
The integrated measuring, adjusting and checking instrument 505 is provided with an upper sealing element 16 and a lower sealing element 24, and the two-stage sealing element seals off the annular space between the integrated measuring, adjusting and checking instrument 505 and the high-efficiency water distributor 503, so that the pressure of the annular space of the oil sleeve between the second packer 501 and the third packer 504 enters the outer pressure transmission hole 25 of the integrated measuring, adjusting and checking instrument 505 through the pressure measurement channel of the high-efficiency water distributor 503 and is monitored by the outer pressure sensor 26. The external pressure sensor is a sensor for monitoring the pressure outside the oil pipe, and when the packers above and below the oil layer are well sealed, the pressure of the second oil layer 502 is monitored by the external pressure sensor 26.
The internal pressure sensor 4 arranged on the integrated measuring and adjusting seal tester 505 tests the pressure in the oil pipe.
The seal checking process of the device of the invention is as follows: after the integrated testing, adjusting and seal checking instrument 505 is positioned in the efficient water distributor 503, a water injection channel of the efficient water distributor is closed firstly, an upper sealing piece and a lower sealing piece of the integrated testing, adjusting and seal checking instrument 505 are set, and then water is injected from an oil pipe. When the packer sealing state is good, the injected water enters an oil layer except the oil layer two 502. The internal pressure sensor 4 obtains the water injection pressure in the oil pipe through testing, and reflects the oil layer injection pressure except the second oil layer 502. The outer pressure sensor 26 tests to obtain the pressure of reservoir two 502. When the water injection pressure is changed, the test pressure of the inner pressure sensor 4 is changed according to the injection pressure, while the test pressure of the outer pressure sensor 26 is not changed. When the sealing state of the packer is not good, the testing pressure of the external pressure sensor 26 can change along with the change of the water injection pressure.
Fig. 2 only shows the states of the integrated testing, adjusting, sealing and pressure measuring instrument 505 for the second oil layer 502, and the testing operation states of the integrated testing, adjusting and sealing instrument 505 for other oil layers are completely the same.
Referring to fig. 1, the integrated testing, adjusting and seal checking instrument comprises:
the device comprises a control unit 2, a flow sensor 3, an internal pressure sensor 4 installed in an instrument shell 5, an upper motor 6, a lead screw 15 connected with the upper motor through an upper coupler 7, an axial positioning unit 100, an upper packing unit 200, a lower packing unit 300, an external pressure sensor 26, a circumferential positioning unit 14 and a rotating unit 400, wherein the axial positioning unit 100 and the upper packing unit 200 are driven by the lead screw 15.
The control unit 2 is electrically connected with the ground controller 31 through a cable 1;
the upper motor 6, the lower motor 27, the internal pressure sensor 4, the external pressure sensor 26 and the flow sensor 3 are all electrically connected with the control unit 2.
The control unit 2 is used for receiving the instructions of the ground controller and starting to control the forward rotation or the reverse rotation of the upper motor 6 and the lower motor 27, receiving the test signals of the sensors and transmitting the test signals to the ground controller 31. The sensor comprises: a flow sensor 3, an internal pressure sensor 4 and an external pressure sensor 26.
The ground controller 31 is used for receiving and displaying the test data uploaded by the control unit 2, and sending a command for starting the forward rotation or the reverse rotation of the motor to the control unit 2, wherein the motor comprises an upper motor 6 and a lower motor 27.
The axial positioning unit 100 comprises a positioning block 8, a spring 9, a pin 11 and an opening fixing frame 12. The spring 9 is sleeved on the positioning block 8. The positioning block 8 is provided with an axial anti-blocking sliding groove 10, and a pin shaft 11 for fixing the positioning block 8 is arranged in the anti-blocking sliding groove 10. The pin 11 is fixedly connected with the instrument shell 5. A reducing slope is arranged between the instrument shell 5 and the positioning block 8. The screw rod 15 is provided with a positioning thread 13, and the opening fixing frame 12 is in threaded connection with the screw rod 15 through the positioning thread 13. When the screw rod 15 rotates, the positioning block 8 is driven to move up or down, and under the action of the spring 9, the positioning block 8 extends out or retracts along the slope in the radial direction.
The circumferential positioning unit 14 is known in the art and is disclosed in chinese patent "bidirectional sealed manifold flow regulator", application No. 201510973113.4, see items 56-59 of figure 1 thereof. Also disclosed in chinese patent "self-positioning downhole flow rate meter", application No. 201110187092.5, see the section of the instrument labeled 9-10 in fig. 1.
The lead screw 15 is provided with an upper setting thread 18 and a lower setting thread 21 which are opposite in screwing direction. As a preferred example, the upper setting thread 18 and the lower setting thread 21 are generally trapezoidal threads for higher transmission efficiency.
The upper packing unit 200 comprises an upper packing 16, an upper squeeze ring 17, an upper setting thread 18 on the lead screw 15, and an upper setting block 19.
The lower packing unit 300 comprises a lower setting thread 21 on the lead screw 15, a lower setting block 22, a lower squeeze ring 23 and a lower packing 24.
Referring to fig. 1 and 3, the side wall of the instrument housing 5 is provided with a radial through groove 20; the upper end of the upper extrusion ring 17 is contacted with an upper sealing part 16 sleeved on the outer shell of the instrument, and the lower part of the upper extrusion ring radially penetrates through a through groove 20 and is axially connected with an upper setting block 19; the lower end of the lower squeeze ring 23 contacts a lower packing 24 fitted around the instrument housing, and its lower portion passes radially through the through groove 20 and axially engages the lower setting block 22. Said axial abutment, as shown in figure 1, is pushed together by the provision of a radial shoulder; as a possible embodiment, as shown in fig. 4, the axial abutment is achieved by using screws to fix the upper compression ring 17 and the upper setting block 19, and the lower compression ring 23 and the lower setting block 22 are also fixed by using screws. The radial abutment may also be achieved by other means, such as welding.
The upper setting block 19 is in threaded connection with the lead screw 15 through an upper setting thread 18, and the lower setting block 22 is in threaded connection with the lead screw 15 through a lower setting thread 21. When the screw rotates, the upper setting block 19 and the lower setting block 22 axially move in opposite directions, thereby driving the upper setting block and the upper squeeze ring to set or unset the upper packing 16, and simultaneously driving the lower setting block and the lower squeeze ring to set or unset the lower packing 24.
The upper and lower seals 16, 24 may be compression-type cartridges or leather cups mounted in opposite directions.
An outer pressure conducting bore 25 is provided in the instrument housing 5. The outer pressure conducting hole 25 internally mounts the outer pressure sensor 26, and externally leads to the outside of the instrument between the upper packing unit 200 and the lower packing unit 300.
In a preferred embodiment, the threaded shaft 15 is tubular and has a wire passing therethrough. As some possible examples, the cross section of the axial hole in the screw may also be other shapes, such as rectangular, polygonal, etc. Of course, as a possible example, the screw rod 15 may be solid, and a wire passing tube is further built on the side surface of the screw rod.
The most common sensor on the test instrument of the separate layer water injection well is an electromagnetic flow sensor, and other flow sensors such as an ultrasonic flow sensor, a turbine flow sensor and the like are also used. Downhole flow sensors are known in the art.
The rotary unit 400 is known in the art and is disclosed in chinese patent "bidirectional sealed manifold flow regulator", application No. 201510973113.4, see the instrument section 43-59 in fig. 1.
Fig. 1 illustrates one possible configuration, in which a lower motor 27, a lower coupling 28 and a reducer 29 are provided in the instrument case in such a manner as to be coupled in this order, and the reducer 29 is connected to a torque transmission mechanism 30. The torque transmission mechanism is a mechanism for transmitting the rotation of the lower motor to the adjustable water nozzle of the high-efficiency water distributor. As shown in fig. 1, the torque transmission mechanism 30 is a known technique.
Because the technical level of the prior micromotor is higher, the motor and the speed reducer are combined together in publicly sold products, the output rotating speed is lower, and whether the speed reducer is arranged between the motor and a driven mechanism or not can be selected according to requirements. As a possible example, no speed reducer is arranged between the upper motor 6 and the lead screw 15 in the attached drawing 1, but a speed reducer can be additionally arranged between the upper motor and the lead screw if further speed reduction is needed.
Because the adjustable water nozzle of the high-efficiency water distributor has small adjustment amount, a speed reducer 29 can be arranged in the rotating unit 400, and as a preferred embodiment, the speed reducer 29 is a planetary gear speed reducer.
Referring to fig. 1, the instrument housing 5 is shown as a single piece for clarity of illustration and description of the invention, but the actual instrument requires parts disassembly for tooling and assembly. The same expression also exists for other parts.
Generally, a stator of a motor in the instrument is fixed with an instrument shell, and a rotor of the motor, namely an output shaft of the motor is connected with a lead screw through a coupler.
In order to be used together with the high-efficiency water distributor disclosed in the chinese patent "bridge type measuring, adjusting, sealing and pressure measuring integrated high-efficiency water distributor", patent application No. 201910485084.5, application No. 2019.06.05, as a possible example, the axial positioning unit 100, the circumferential positioning unit 14, the upper packing unit 200, the lower packing unit 300 and the rotating unit 400 shown in fig. 1 are arranged from top to bottom.
It will be apparent that those skilled in the art can make many modifications and variations based on the spirit of the present invention.
Claims (7)
1. Divide the well logging to examine and transfer and test and seal integrated device, including the underground string of dividing a branch and measure and transfer and examine a system, the survey and transfer examine a system including the integration survey and transfer and examine a appearance, its characterized in that, the integration survey and transfer examine a appearance and include: the device comprises a control unit (2), a flow sensor (3), an internal pressure sensor (4), an upper motor (6), an axial positioning unit (100), a circumferential positioning unit (14), an upper packing unit (200), a lower packing unit (300), an external pressure sensor (26) and a rotating unit (400);
the control unit (2) is electrically connected with the ground controller (31) through a cable (1); the control unit (2) is used for receiving an instruction of the ground controller (31), controlling the upper motor (6) and the lower motor (27) to rotate forwards or backwards, receiving a test signal of the sensor and transmitting the test signal to the ground controller (31); the upper motor (6), the lower motor (27), the internal pressure sensor (4), the external pressure sensor (26) and the flow sensor (3) are electrically connected with the control unit (2);
the upper motor (6) is connected with a screw rod (15) through an upper coupler (7);
the axial positioning unit (100), the upper packing unit (200) and the lower packing unit (300) are driven by a lead screw (15); the axial positioning unit (100) comprises a positioning block (8) provided with an axial anti-jamming sliding groove (10), and a pin shaft (11) for fixing the positioning block (8) is arranged in the anti-jamming sliding groove (10); the lead screw is provided with an upper setting thread (18) and a lower setting thread (21) with opposite screwing directions; the upper setting block (19) is in threaded connection with the lead screw through an upper setting thread (18), and the lower setting block (22) is in threaded connection with the lead screw through a lower setting thread (21); the side wall of the instrument shell (5) is provided with a radial through groove (20); the upper end of the upper extrusion ring (17) is contacted with an upper sealing part (16) sleeved on the outer shell of the instrument, and the lower part of the upper extrusion ring radially penetrates through a penetrating groove (20) and is axially connected with an upper seating block (19); the lower end of the lower extrusion ring (23) is contacted with a lower sealing part (24) sleeved on the outer shell of the instrument, and the lower part of the lower extrusion ring radially penetrates through the penetrating groove (20) and is axially connected with the lower sealing block (22);
the outer pressure sensor (26) tests the pressure between the upper packing unit (200) and the lower packing unit (300) through the outer pressure transmission hole (25);
the axial positioning unit (100), the circumferential positioning unit (14), the upper packing unit (200), the lower packing unit (300) and the rotating unit (400) are arranged from top to bottom.
2. The integrated device for testing, adjusting and sealing of separate injection well as the claim 1 is characterized in that the upper extrusion ring (17) and the upper setting block (19) are connected by radial shoulders or are connected by screws or are welded.
3. The integrated device for testing, adjusting and sealing of separate injection well as the claim 1 is characterized in that the lower extrusion ring (23) and the lower seat block (22) are connected by radial shoulders or are connected by screws or are welded.
4. The integrated device for testing, adjusting and sealing of separate injection well as claimed in claim 1, wherein said screw (15) is tubular and has a wire passing through it.
5. The integrated device for testing, adjusting and sealing of a separate injection well according to claim 1 is characterized in that the flow sensor (3) is an electromagnetic flow sensor.
6. The integrated apparatus for testing, adjusting and sealing of separate injection well according to claim 1, characterized in that the upper and lower sealing members (16, 24) are compression-type rubber cylinders or rubber cups.
7. The integrated device for testing, adjusting and sealing of separate injection well according to claim 1, characterized in that the upper setting thread (18) and the lower setting thread (21) are trapezoidal threads.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110365690.0A CN113137213A (en) | 2021-04-06 | 2021-04-06 | Integrated device for testing, adjusting and checking sealing of separate injection well |
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| CN202110365690.0A CN113137213A (en) | 2021-04-06 | 2021-04-06 | Integrated device for testing, adjusting and checking sealing of separate injection well |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323649A (en) * | 2021-07-26 | 2021-08-31 | 东营市鑫吉石油技术有限公司 | Integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system and using method thereof |
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| CN211156029U (en) * | 2019-08-20 | 2020-08-04 | 杭州煜昊科技有限公司 | Rotating wheel seat for clamp |
| CN212671696U (en) * | 2020-06-16 | 2021-03-09 | 中国石油天然气集团有限公司 | Soluble bridge plug sealing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113323649A (en) * | 2021-07-26 | 2021-08-31 | 东营市鑫吉石油技术有限公司 | Integrated flow-collecting bridge type testing, adjusting, inspecting, sealing and injecting system and using method thereof |
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Application publication date: 20210720 |