CN111749645A - Blanking plug - Google Patents
Blanking plug Download PDFInfo
- Publication number
- CN111749645A CN111749645A CN201910244751.0A CN201910244751A CN111749645A CN 111749645 A CN111749645 A CN 111749645A CN 201910244751 A CN201910244751 A CN 201910244751A CN 111749645 A CN111749645 A CN 111749645A
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- China
- Prior art keywords
- piston
- blanking plug
- ring
- sleeve
- sawtooth
- Prior art date
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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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
- E21B34/102—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position
- E21B34/103—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with means for locking the closing element in open or closed position with a shear pin
Abstract
The invention discloses a blanking plug, and belongs to the technical field of oil well maintenance. The communicable mechanism in the blanking plug includes: the piston sleeve is fixed at the upper end of the upper joint through a first shear pin, the first piston is slidably arranged in the piston sleeve, the sawtooth ring is sleeved on the first piston, and the second piston is arranged at the lower end of the first piston through a second shear pin. After the blanking plug is installed in the tubular column, if the tubular column is blocked, liquid can be injected through a wellhead, the liquid pressure above the blanking plug is improved, the liquid pressure is applied to the top wall of the second piston, the second shear pin is sheared, the second piston moves downwards, the first piston and the second piston are separated, the blanking plug is conducted, liquid above and below the blanking plug can flow through the blanking plug, conditions are provided for further maintenance or production, and therefore production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of oil well maintenance, in particular to a blanking plug.
Background
When the oil-water well is repaired, because the underground pressure is huge, in order to prevent blowout accidents and avoid the pollution of a kill-job hydraulic well to an oil layer, the kill-job hydraulic well is usually operated under pressure, one step of the kill-job hydraulic well is to lift a pipe column under the condition of keeping the pressure in the original well, and before the pipe column is lifted, a blanking plug needs to be put into the pipe column and fixed on the inner wall of the pipe column so as to prevent high-pressure liquid such as crude oil, water and the like from entering the pipe column to be lifted and overflowing from a well mouth.
The plug generally used at present comprises a slip mechanism, a sealing mechanism, a setting mechanism, a locking mechanism and a positioning mechanism which are sequentially connected from top to bottom, wherein the plug is lifted up after being delivered to a preset position through a steel wire, and the positioning mechanism is clamped at an oil pipe coupling to position the plug in a pipe column; continuously lifting the plug, cutting off a setting shear pin in the setting mechanism, and pushing a piston cylinder in the setting mechanism by bottom-hole liquid to move upwards to open three slips of the slip mechanism and anchor the slips on the inner wall of the oil pipe; then the slip mechanism extrudes the sealing mechanism to enable a rubber sleeve of the sealing mechanism to tightly press the inner wall of the pipe column after expansion, so as to realize setting; simultaneously, the locking mechanism locks the piston cylinder; and (3) cutting off an automatic releasing shear pin on the slip mechanism, separating the blanking plug from the steel wire, finishing the installation of the blanking plug, and blocking the flow of liquid in the pipe column by the blanking plug.
However, in the process of lifting the pipe column, if the pipe column is blocked, the operation process of lifting the pipe column is forced to be stopped, and because the sealing rubber tube in the blanking plug is tightly attached to the inner wall of the pipe column and the piston cylinder in the blanking plug is locked, the blanking plug is in a blocking state, so that liquid in the pipe column cannot flow, the blanking plug can only wait for further maintenance of overhaul equipment, and the oil well cannot recover production in the waiting process, so that a lot of time is consumed, and the production efficiency is low.
Disclosure of Invention
The embodiment of the invention provides a blanking plug, which can solve the problems that after the existing common blanking plug is installed in a tubular column, if the tubular column is blocked, the operation process is forced to be stopped, overhaul equipment needs to be waited for further maintenance, and an oil well cannot recover production in the waiting process, so that a large amount of time is consumed, and the production efficiency is low. The technical scheme is as follows:
there is provided an occluder, comprising: the connecting mechanism, the slip mechanism, the sealing mechanism, the setting mechanism, the locking mechanism and the positioning mechanism are sequentially connected from top to bottom;
the communicable mechanism includes: the piston type hydraulic cylinder comprises an upper joint, a piston sleeve, a first piston, a sawtooth ring and a second piston, wherein the upper end of the piston sleeve is fixed in the lower end of the upper joint through a first shear pin;
the lower end of the piston sleeve is connected and communicated with the slip mechanism, and a sawtooth groove is formed in the inner wall of the upper end of the piston sleeve;
the first piston is provided with a liquid inlet hole, and the first piston can slide upwards to expose the liquid inlet hole in the pipe column;
the sawtooth ring is positioned below the liquid inlet hole, and the sawtooth ring and the sawtooth groove form a locking structure.
In a possible design, the first piston is provided with a detachable limiting ring and a limiting lug at intervals, and the sawtooth ring is located between the limiting ring and the limiting lug.
In a possible design, the first piston comprises a small-diameter section and a large-diameter section which are communicated from top to bottom, and the sawtooth ring is sleeved on the large-diameter section.
In one possible embodiment, a plurality of first sealing rings are arranged between the piston sleeve and the first piston.
In one possible design, a part of the plurality of first sealing rings is located above the liquid inlet hole, and the rest of the plurality of first sealing rings is located below the liquid inlet hole.
In one possible embodiment, a plurality of first grooves are provided on the piston sleeve, and each first sealing ring is disposed in a corresponding first groove.
In a possible design, the top wall of the second piston abuts against the first piston.
In one possible embodiment, a plurality of second sealing rings are arranged between the second piston and the first piston.
In one possible design, the slip mechanism is provided with external threads;
and the piston sleeve is provided with an internal thread matched with the external thread on the slip mechanism.
In one possible design, a third sealing ring is arranged between the piston sleeve and the slip mechanism.
According to the blanking plug provided by the invention, after the blanking plug is installed in a tubular column, if the tubular column is blocked, liquid can be injected through a wellhead, the liquid pressure above the blanking plug is improved, the liquid pressure is applied to the top wall of the second piston, so that the second shear pin is sheared off, the second piston moves downwards, the first piston and the second piston are separated, the blanking plug is conducted, the liquid above and below the blanking plug can flow through the blanking plug, conditions are provided for further maintenance or production, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an occluder according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a communicable mechanism in an occluder in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of the use of the communication mechanism in the blanking plug according to the embodiment of the present invention;
FIG. 4 is a schematic view of the use of the communication mechanism in the blanking plug according to the embodiment of the present invention;
the various reference numbers in the drawings are illustrated below:
1-a communicable mechanism;
2-a slip mechanism;
3-a sealing mechanism;
4-setting mechanism;
5-a locking mechanism;
6-a positioning mechanism;
101-upper joint;
102-a first shear pin;
103-a piston sleeve;
104-a first piston;
105-a serrated ring;
106-a second shear pin;
107-a second piston;
108-a sawtooth groove;
109-liquid inlet hole;
110-a stop collar;
111-a limit bump;
112-a first sealing ring;
113-a first groove;
114-a second sealing ring;
115-third sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an occluder according to an embodiment of the present invention, which is shown in fig. 1 and includes: the connecting mechanism 1, the slip mechanism 2, the sealing mechanism 3, the setting mechanism 4, the locking mechanism 5 and the positioning mechanism 6 are connected in sequence from top to bottom; fig. 2 is a schematic structural diagram of a communicable mechanism 1 in an occluder according to an embodiment of the present invention, and referring to fig. 2, the communicable mechanism 1 includes: an upper joint 101, a piston sleeve 103 with an upper end fixed in the lower end of the upper joint 101 through a first shear pin 102, a first piston 104 slidably arranged in the piston sleeve 103, a sawtooth ring 105 sleeved on the first piston 104, and a second piston 107 arranged in the lower end of the first piston 104 through a second shear pin 106; the lower end of the piston sleeve 103 is connected and communicated with the slip mechanism 2, and the inner wall of the upper end of the piston sleeve 103 is provided with a sawtooth groove 108; the first piston 104 is provided with an inlet hole 109, and the first piston 104 can slide upwards to expose the inlet hole 109 in the pipe column; the sawtooth ring 105 is located below the liquid inlet 109, and the sawtooth ring 105 and the sawtooth groove 108 form a locking structure.
The following description is given of the working principle of the blanking plug provided by the embodiment of the invention:
when in use, the blanking plug is firstly installed in the pipe column, which specifically comprises the following steps: the plug is placed into the string from the wellhead using a wireline, the positioning mechanism 6 in the plug is able to engage a tubing coupling in the string to effect positioning of the plug, and the first piston 104 in the plug is moved upwardly to shear the first shear pin 102 and expose the fluid inlet port in the string.
After the blanking plug is installed, the state of the communicating mechanism 1 can be seen in fig. 3, if a pipe column is blocked, the communicating mechanism 1 in the blanking plug can be opened to conduct the blanking plug, so that liquid above and below the blanking plug can flow through the blanking plug, and conditions are provided for further maintenance or production.
Fig. 4 is a schematic diagram of a using state of a communicable mechanism 1 in an occluder according to an embodiment of the present invention, and a state after the communicable mechanism 1 is opened can be seen in fig. 4. The process of opening the communicable mechanism 1 includes: the operator injects high pressure liquid into the pipe string through the wellhead to raise the pressure of the liquid above the blanking plug, the liquid enters the inner cavity of the first piston 104 through the liquid inlet, so that the top wall of the second piston 107 bears larger liquid pressure, the pressure acting on the top wall of the second piston 107 is continuously increased along with the continuous pressurization of the wellhead, when the difference between the pressure acting on the top wall of the second piston 107 and the pressure acting on the lower wall of the second piston 107 exceeds a second preset threshold value, the second shear pin 106 is sheared, the second piston 107 moves downwards, the first piston 104 and the second piston 107 are separated, and the blanking plug is conducted.
The conduction of the blanking plug enables liquid above and below the blanking plug to flow through the blanking plug, so that conditions are provided for further maintenance or production, and the production efficiency is improved.
In the embodiment of the present invention, the upper joint 101 is used for connecting a jar, the jar is used for delivering the plug to a tubing coupling in a tubing string, and the upper joint 101 and the jar may be detachably connected by a threaded connection or the like, which is not limited in this embodiment.
The number of the first shear pins 102 may be provided in multiple numbers (e.g., 2, 3, 4, etc.), and the multiple first shear pins 102 are uniformly distributed along the circumferential direction of the contact surface between the upper connector 101 and the piston sleeve 103, so that the multiple first shear pins 102 are uniformly stressed.
Further, the upper joint 101 may be provided with threaded holes corresponding to the number of the first shear pins 102, and the first shear pins 102 are fixed to the upper joint 101 in a threaded manner. Blind holes or annular grooves adapted to the plurality of first shear pins 102 may be provided on the piston sleeve 103 so that the first shear pins 102 are fixed to the piston sleeve 103.
When the shearing force applied to the first shear pin 102 exceeds a first predetermined threshold value, the first shear pin 102 is sheared, the upper joint 101 moves upward under the lifting action of the jar, and the upper joint 101 and the piston sleeve 103 are separated. The first preset threshold value can be set according to the specific condition and production requirement of the oil well, such as: the first preset threshold may be 10MPa to 12MPa, and the specific value of the first preset threshold is not limited in this embodiment.
The number of the second shear pins 106 can be set to be a plurality (for example, 2, 3, 4, etc.), and the plurality of first shear pins 102 are uniformly distributed along the circumferential direction of the contact surface between the first piston 104 and the second piston 107, so that the plurality of second shear pins 106 are uniformly stressed.
Further, the first piston 104 may be provided with a number of threaded holes corresponding to the number of second shear pins 106, and the second shear pins 106 are fixed to the first piston 104 by a thread manner. Blind holes or annular grooves adapted to the plurality of second shear pins 106 may be provided on the second piston 107 so that the second shear pins 106 are fixed on the second piston 107.
When the shear force on the second shear pin 106 exceeds a second predetermined threshold, the second shear pin 106 is sheared and the second piston 107 moves downward, separating the first piston 104 from the second piston 107. The second preset threshold value can be set according to the specific condition and production requirement of the oil well, such as: the second preset threshold may be 5MPa, and the specific value of the second preset threshold is not limited in this embodiment.
The serrated ring 105 has a plurality of serrations, for example, the serrated ring 105 may have a height of 10mm, 5 serrations, a tooth spacing of 2mm, and a tooth inclination of 30 °.
The sawtooth groove 108 fits into the sawtooth ring 105, for example, the sawtooth groove 108 can be 12mm in height with 6 sawteeth, 2mm tooth spacing and 30 ° tooth skew.
In one possible design, the first piston 104 is provided with a detachable limiting ring 110 and a limiting protrusion 111 at intervals, and the serrated ring 105 is located between the limiting ring 110 and the limiting protrusion 111.
The limiting ring 110 and the limiting protrusion 111 are used to fix the serrated ring 105, and prevent the misalignment between the serrated ring 105 and the first piston 104. The serrated ring 105 and the first piston 104 may be in clearance connection, and the height of the limiting ring 110 is equal to the distance between the serrated groove 108 and the top wall of the upper end of the inner cavity of the piston sleeve 103, so that the serrated ring 105 on the first piston 104 does not continuously rise after being lifted to a position corresponding to the serrated groove 108, and the locking structure is formed between the serrated ring 105 and the serrated groove 108.
This spacing ring 110 can be connected on this first piston 104 through a plurality of lock pins detachable, specifically, can evenly set up a plurality of spacing holes along circumference on this spacing ring 110, is equipped with a plurality of blind holes at the relevant position on this first piston 104, connects these a plurality of spacing holes and these a plurality of blind holes through a plurality of lock pins. Furthermore, the locking nail can be fixed in the corresponding limiting hole and the blind hole in a threaded mode.
In one possible design, a plurality of sealing rings (e.g., 2, 3, 4, etc.) are disposed between the stop tab 111 and the piston sleeve 103 to seal the connection between the stop tab 111 and the piston sleeve 103, thereby preventing fluid from flowing through the gap between the stop tab 111 and the piston sleeve 103. The plurality of sealing rings can be uniformly distributed along the axial direction, so that a multiple sealing effect is achieved.
In one possible design, the first piston 104 includes a small diameter section and a large diameter section communicating from top to bottom, and the serration ring 105 is sleeved on the large diameter section.
When the sawtooth ring 105 is installed on the first piston 104, the sawtooth ring 105 does not need to generate friction with the small diameter section, the installation difficulty is reduced, the installation time is reduced, and the disassembly process is the same.
In one possible design, a plurality of first sealing rings 112 are provided between the piston sleeve 103 and the first piston 104.
The plurality (e.g., 2, 3, 4, etc.) of first sealing rings 112 are used to seal the connection between the piston sleeve 103 and the first piston 104, thereby preventing fluid leakage between the piston sleeve 103 and the first piston 104 when the obturator is in a blocked state. The plurality of first sealing rings 112 may be uniformly distributed along the axial direction, thereby performing multiple sealing functions.
In one possible design, a portion of the plurality of first sealing rings 112 is located above the liquid inlet hole 109, and the remaining portion of the plurality of first sealing rings 112 is located below the liquid inlet hole 109.
The above arrangement can prevent the liquid inside the first piston 104 from flowing upward or downward along the contact surface between the first piston 104 and the piston sleeve 103 through the liquid inlet hole 109, or the liquid on the upper and lower sides outside the liquid inlet hole 109 from flowing into the first piston 104 through the liquid inlet hole 109.
In one possible design, a plurality of first grooves 113 are provided on the piston sleeve 103, and each first sealing ring 112 is disposed in a corresponding first groove 113.
The plurality of first grooves 113 are used to fix the corresponding first sealing rings 112. The first sealing ring 112 may be clamped into the first groove 113, or may be fixed in the first groove 113 by adhesion, which is not limited in this embodiment.
In one possible design, the top wall of the second piston 107 abuts the first piston 104.
When the obturator is installed in a pipe string, the liquid under the second piston 107 applies pressure to the second piston 107, the inner cavity of the first piston 104 may include a small diameter portion and a large diameter portion from top to bottom, the outer diameter of the second piston 107 is the same as the diameter of the large diameter portion, and the top wall of the second piston 107 abuts against the top wall of the large diameter portion so as to prevent the second piston 107 from moving upward under a great pressure.
In one possible design, a plurality of second sealing rings 114 are provided between the second piston 107 and the first piston 104.
The plurality of (e.g., 2, 3, 4, etc.) second sealing rings 114 are used to cooperate with the second piston 107 to seal off the inner cavity of the first piston 104, so that liquid cannot flow up and down through the first piston 104. The plurality of second sealing rings 114 may be uniformly distributed along the axial direction, thereby performing multiple sealing functions.
In one possible design, a plurality of second grooves are provided on the first piston 104, and each second seal ring 114 is disposed in a corresponding second groove.
The plurality of second grooves are used to fix the plurality of second sealing rings 114, and the second sealing rings 114 may be snapped into the second grooves or fixed in the second grooves by bonding or the like, which is not limited in this embodiment.
In one possible design, the slip mechanism 2 is provided with external threads; the piston sleeve 103 is provided with an internal thread which is matched with the external thread on the slip mechanism 2.
The lower end of the piston sleeve 103 is fixed at the upper end of the slip mechanism 2 in a threaded connection manner, so that the piston sleeve 103 and the slip mechanism 2 can be conveniently disassembled and assembled.
In one possible design, a third seal 115 is provided between the piston sleeve 103 and the slip mechanism 2.
The third sealing ring 115 is used to seal between the piston sleeve 103 and the slip mechanism 2, thereby preventing liquid from flowing between the piston sleeve 103 and the slip mechanism 2.
In one possible design, a third groove is provided in the slip mechanism 2, and the third sealing ring 115 is disposed in the third groove.
The third groove is used for fixing the third sealing ring 115. The third sealing ring 115 may be clamped into the third groove, or may be fixed in the third groove by bonding or the like, which is not limited in this embodiment.
All the above-mentioned optional technical solutions can be combined arbitrarily to form the optional embodiments of the present invention, and are not described herein again.
According to the blanking plug provided by the invention, after the blanking plug is installed in a tubular column, if the tubular column is blocked, liquid can be injected through a wellhead, the liquid pressure above the blanking plug is improved, the liquid pressure is applied to the top wall of the second piston, so that the second shear pin is sheared off, the second piston moves downwards, the first piston and the second piston are separated, the blanking plug is conducted, the liquid above and below the blanking plug can flow through the blanking plug, conditions are provided for further maintenance or production, and the production efficiency is improved.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An occluder, comprising: the connecting mechanism (1), the slip mechanism (2), the sealing mechanism (3), the setting mechanism (4), the locking mechanism (5) and the positioning mechanism (6) are connected in sequence from top to bottom;
the communicable mechanism (1) includes: the device comprises an upper joint (101), a piston sleeve (103) with the upper end fixed in the lower end of the upper joint (101) through a first shear pin (102), a first piston (104) arranged in the piston sleeve (103) in a sliding manner, a sawtooth ring (105) sleeved on the first piston (104), and a second piston (107) arranged in the lower end of the first piston (104) through a second shear pin (106);
the lower end of the piston sleeve (103) is connected and communicated with the slip mechanism (2), and a sawtooth groove (108) is formed in the inner wall of the upper end of the piston sleeve (103);
the first piston (104) is provided with an inlet hole (109), and the first piston (104) can slide upwards to expose the inlet hole (109) in the pipe column;
the sawtooth ring (105) is positioned below the liquid inlet hole (109), and the sawtooth ring (105) and the sawtooth groove (108) form a locking structure.
2. The blanking plug of claim 1, wherein the first piston (104) is provided with a detachable limiting ring (110) and a limiting bump (111) at intervals, and the sawtooth ring (105) is positioned between the limiting ring (110) and the limiting bump (111).
3. The blanking plug of claim 1, wherein the first piston (104) comprises a small diameter section and a large diameter section which are communicated from top to bottom, and the serration ring (105) is sleeved on the large diameter section.
4. The blanking plug of claim 1, wherein a plurality of first sealing rings (112) are provided between the piston sleeve (103) and the first piston (104).
5. The blanking plug of claim 4, wherein a portion of the first plurality of sealing rings (112) is located above the liquid inlet opening (109) and a remaining portion of the first plurality of sealing rings (112) is located below the liquid inlet opening (109).
6. The blanking plug of claim 4, wherein the piston sleeve (103) is provided with a plurality of first grooves (113), each first sealing ring (112) being arranged in a corresponding first groove (113).
7. The blanking plug of claim 1, wherein a top wall of the second piston (107) abuts the first piston (104).
8. The blanking plug of claim 1, wherein a plurality of second sealing rings (114) are provided between the second piston (107) and the first piston (104).
9. The plug according to claim 1, characterized in that the slip mechanism (2) is provided with an external thread;
and the piston sleeve (103) is provided with an internal thread matched with the external thread on the slip mechanism (2).
10. The plug according to claim 1, wherein a third sealing ring (115) is arranged between the piston sleeve (103) and the slip mechanism (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910244751.0A CN111749645B (en) | 2019-03-28 | 2019-03-28 | Blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910244751.0A CN111749645B (en) | 2019-03-28 | 2019-03-28 | Blanking plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111749645A true CN111749645A (en) | 2020-10-09 |
| CN111749645B CN111749645B (en) | 2022-08-05 |
Family
ID=72671531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910244751.0A Active CN111749645B (en) | 2019-03-28 | 2019-03-28 | Blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111749645B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645688A (en) * | 2020-12-17 | 2022-06-21 | 中国石油化工股份有限公司 | Packer while drilling for packing underground high-pressure stratum overflow |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4273194A (en) * | 1980-02-11 | 1981-06-16 | Camco, Incorporated | Annular flow control safety valve |
| CN101781977A (en) * | 2010-01-11 | 2010-07-21 | 中国石油化工股份有限公司 | Bidirectional high-pressure detachable bridge plug |
| CN104265235A (en) * | 2014-09-15 | 2015-01-07 | 四机赛瓦石油钻采设备有限公司 | Hydraulic-setting large-size detachable insertion tube packer |
| CN204827300U (en) * | 2015-04-15 | 2015-12-02 | 中国石油化工股份有限公司 | A hollow hydraulic pressure setting tool that is used for solid bridging plug seat to seal |
| CN206860139U (en) * | 2017-06-02 | 2018-01-09 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | It is a kind of can gradually deblocking water injection packer |
-
2019
- 2019-03-28 CN CN201910244751.0A patent/CN111749645B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4273194A (en) * | 1980-02-11 | 1981-06-16 | Camco, Incorporated | Annular flow control safety valve |
| CN101781977A (en) * | 2010-01-11 | 2010-07-21 | 中国石油化工股份有限公司 | Bidirectional high-pressure detachable bridge plug |
| CN104265235A (en) * | 2014-09-15 | 2015-01-07 | 四机赛瓦石油钻采设备有限公司 | Hydraulic-setting large-size detachable insertion tube packer |
| CN204827300U (en) * | 2015-04-15 | 2015-12-02 | 中国石油化工股份有限公司 | A hollow hydraulic pressure setting tool that is used for solid bridging plug seat to seal |
| CN206860139U (en) * | 2017-06-02 | 2018-01-09 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | It is a kind of can gradually deblocking water injection packer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114645688A (en) * | 2020-12-17 | 2022-06-21 | 中国石油化工股份有限公司 | Packer while drilling for packing underground high-pressure stratum overflow |
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| Publication number | Publication date |
|---|---|
| CN111749645B (en) | 2022-08-05 |
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