CN220539601U - Packer for oil-gas well - Google Patents
Packer for oil-gas well Download PDFInfo
- Publication number
- CN220539601U CN220539601U CN202322042130.9U CN202322042130U CN220539601U CN 220539601 U CN220539601 U CN 220539601U CN 202322042130 U CN202322042130 U CN 202322042130U CN 220539601 U CN220539601 U CN 220539601U
- Authority
- CN
- China
- Prior art keywords
- setting
- seat
- wall
- packer
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000012856 packing Methods 0.000 abstract description 10
- 238000004873 anchoring Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a packer for an oil and gas well, which comprises a central pipe, wherein an upper joint is connected to the upper end of the central pipe, a lower slip assembly for anchoring the packer on the inner wall of a casing is sleeved on the outer wall of the central pipe in a first setting stage from the lower part of the central pipe, an upper slip assembly for anchoring the packer on the inner wall of the casing in a second setting stage from the upper part of the central pipe is arranged on the upper end of the central pipe, an upper cone matched with the upper slip assembly, a lower cone matched with the lower slip assembly and a packing assembly for sealing the annular space of the oil casing in a third setting stage are arranged on the outer wall of the central pipe between the packing assembly and the lower cone. The upper slips, the packing element and the lower slips sequentially act in the setting process of the packer for the oil and gas well, do not interfere with each other, and have good sealing effect.
Description
Technical Field
The utility model relates to a packer used in an oil field underground, in particular to a packer used in an oil-gas well.
Background
In order to ensure the airtight effect of the oil pipe in the high-pressure state in the production process of the oil and gas well, the matched packer is required to have the airtight effect, therefore, the high-pressure-resistant airtight special thread is required to be adopted when the central pipe of the packer is connected with the upper joint, the lower joint and other parts, the high-pressure-resistant airtight special thread has long processing period and high processing cost, and the manufacturing cost of the packer is increased. In order to solve the problem, CN 211924131U discloses a packer of an integrated mandrel, which consists of a central tube, an upper slip, a lower slip, a locking mechanism and a sealing mechanism; an upper slip and a lower slip are respectively arranged on the circumference of the central tube in an up-down mode, a sealing mechanism is arranged on the central tube between the upper slip and the lower slip and is respectively in contact connection with the upper slip and the lower slip, and a locking mechanism is arranged on the central tube below the lower slip and is in contact connection with the lower slip. The central pipe of the packer is designed integrally, can be directly connected with a setting tool, effectively reduces the risk of pressure leakage and tripping of a central pipe joint, ensures the setting reliability of the packer, is simple to manufacture and low in cost, can effectively solve the problem of low working efficiency caused by complex structure and difficult assembly of the packer at present, and is very suitable for underground operation of an oil gas well. The packer is characterized in that the locking mechanism extrudes the rubber cylinder of the sealing mechanism in the setting process, so that the rubber cylinder is in contact with the sleeve, the upper slip and the lower slip are also close to the sleeve slowly when the pressure reaches the setting pressure while the rubber cylinder is extruded, the rubber cylinder is expanded to be closely attached to the inner wall of the sleeve, the slips are engaged with the sleeve wall to the maximum extent, the setting of the packer is completed, and the upper annulus isolation and the lower annulus isolation are realized. However, because the packing element, go up slips, lower slips atress, action simultaneously in setting process, consequently, can hinder the further interlock of going up slips and sleeve pipe inner wall after packing element and sleeve pipe inner wall contact, can not only hinder the further interlock of going up slips and sleeve pipe inner wall after lower slips and sleeve pipe inner wall contact, can also weaken the axial pressure of packing element, influence the setting effect of packing element.
Disclosure of Invention
The utility model aims to solve the technical problems that: the packer for the oil gas well is simple in structure, and can reduce the production cost of the packer while meeting the production requirement of the oil gas well.
The technical scheme adopted for solving the technical problems is as follows: the packer for the oil and gas well comprises a central pipe, wherein the lower part of the central pipe is provided with a limiting ring table, the upper end of the central pipe is connected with an upper joint through threads, a lower slip assembly for anchoring the packer on the inner wall of a sleeve from the lower part of the central pipe in a first setting stage is sleeved on the outer wall of the central pipe above the limiting ring table, an upper slip assembly for anchoring the packer on the inner wall of the sleeve from the upper part of the central pipe in a second setting stage is arranged at the upper end of the central pipe, an upper cone matched with the upper slip assembly, a lower cone matched with the lower slip assembly and a packing assembly for sealing an oil sleeve annulus in a third setting stage are arranged on the outer wall of the central pipe between the packing assembly and the lower cone, and the setting assembly capable of applying axial thrust to the lower cone, the upper cone and the packing assembly is pressed in the central pipe.
As a further improvement of the utility model: the setting assembly is a setting assembly with a self-locking function, the setting assembly comprises a setting hydraulic cylinder which is formed by a lower cone, a clamp spring sheath and a connecting sleeve in sequence in threaded connection and then is arranged on the outer wall of a central tube, a setting piston is arranged in the setting hydraulic cylinder, the setting piston is composed of a piston head and a clamp spring seat which is integrally connected with the piston head, a first setting stage shear pin is arranged between the upper end of the clamp spring seat and the connecting sleeve, unidirectional ring teeth are arranged on the outer tube wall of the clamp spring seat, a plurality of clamp spring blocks which are matched with the unidirectional ring teeth to finish unidirectional locking of the setting piston are arranged in the clamp spring sheath, unidirectional arc teeth matched with the unidirectional ring teeth are arranged on the inner wall of the clamp spring blocks, conical surfaces which enable the clamp spring blocks to slide to the unidirectional ring teeth under the action of gravity are arranged on the inner circumference of the clamp spring sheath, conical heads matched with the conical surfaces are arranged at the lower ends of the clamp spring blocks, and a setting liquid hole for enabling the pressurizing liquid in the central tube to enter the setting hydraulic cylinder is arranged on the central tube wall below the piston head.
As a further improvement of the utility model: the upper slip assembly comprises an upper slip seat, a plurality of upper slips are arranged in the upper slip seat, an upper slip seat supporting ring is arranged between the upper slip seat and an upper cone, the upper end of the upper slip seat supporting ring is inserted into an annular space between the upper slip seat and a central pipe, the lower end of the upper slip seat supporting ring is inserted into an annular space between the upper cone and the central pipe, a thrust ring table for transmitting axial thrust to the upper slip seat supporting ring is arranged at the contact part of the upper cone and the upper slip seat supporting ring, a stress ring surface matched with the thrust ring table is arranged at the lower end of the upper slip seat supporting ring, and a second setting stage shear pin is arranged between the upper slip seat supporting ring and the upper slip seat.
As a further improvement of the utility model: the rubber cylinder assembly comprises a rubber cylinder seat and a single rubber cylinder sleeved on the rubber cylinder seat, a lower outer sleeve is sleeved outside a central pipe between the single rubber cylinder and the setting assembly, the lower end of the lower outer sleeve is in threaded connection with the clamp spring seat, the upper end of the lower outer sleeve is sleeved on the outer wall of the rubber cylinder seat and abuts against the lower end of the single rubber cylinder, and a third setting stage shear pin is arranged between the rubber cylinder seat and the lower outer sleeve.
As a further improvement of the utility model: the lower slip assembly comprises a lower slip seat, a plurality of lower slips are arranged in the lower slip seat, and a first deblocking stage shear pin is arranged between the lower slip seat and the central pipe.
As a further improvement of the utility model: the outer wall of the central tube at the lower end of the upper slip seat supporting ring is embedded with a first deblocking baffle ring which applies upward thrust to the lower end of the upper slip seat supporting ring in the process of lifting the central tube so as to push the upper slip seat upwards, the lower end of the upper slip seat supporting ring is provided with a stress end face matched with the first deblocking baffle ring, and a second deblocking stage shear pin is arranged between the upper slip supporting baffle ring and the upper cone.
As a further improvement of the utility model: the second deblocking baffle ring which applies upward thrust to the lower end of the rubber cylinder seat and releases the axial pressure of the rubber cylinder in the process of lifting the central tube is embedded on the outer wall of the central tube below the rubber cylinder seat.
The beneficial effects are that: the packer for the oil-gas well, disclosed by the utility model, has the advantages that the upper end of the central pipe is connected with the upper joint through the screw thread, so that the lower joint in the conventional packer and the connecting screw thread structure between the lower joint and the central pipe are omitted, and the link of packer leakage is reduced, so that the requirement of the oil-gas well on the tightness of the packer can be met by adopting the conventional connecting screw thread structure between the upper joint of the packer for the oil-gas well and the central pipe, and the production cost and the production period of the packer are reduced. Because the central tube outer wall which is arranged between the rubber sleeve component and the lower cone is adopted, the rubber sleeve component can exert force along the two axial ends of the central tube in the setting process, and the action sequence of the upper slip component, the lower slip component and the rubber sleeve is reasonably arranged, so that the mutual interference between the rubber sleeve and the upper slip component and between the rubber sleeve component and the lower slip component in the setting process is reduced, the upper slip component and the lower slip component can be firmly anchored on the inner wall of the sleeve, the upper and lower packers are prevented from moving up and down, the rubber sleeve can be fully extruded and deformed, the annular space of the oil sleeve is closed, and the stable setting effect is achieved. Because the setting assembly is a self-locking setting assembly, the axial collapse of the setting assembly after the setting can be effectively prevented from being caused when the setting assembly is pressed, the retraction and the sealing failure of the rubber cylinder caused by the loss of the extrusion of the rubber cylinder can be effectively prevented, and the packer for the oil and gas well can maintain a good sealing effect after being used for a long time. Because the second setting stage shear pin is arranged between the upper slip seat support ring and the upper slip seat, and the third setting stage shear pin is arranged between the rubber cylinder seat and the lower outer sleeve, the starting sequence of the lower slip assembly, the upper slip assembly and the rubber cylinder is conveniently and reliably controlled by reasonably setting the shearing force of the shear pins at each setting stage, and the optimal setting effect is achieved by a simple structure. The first unsealing stage shear pin is arranged between the lower slip seat and the central tube, the second unsealing stage shear pin is arranged between the upper slip supporting baffle ring and the upper cone, and the first unsealing baffle ring and the second unsealing baffle ring are embedded on the outer wall of the central tube, so that the oil-gas well packer can sequentially complete the unsealing actions of the lower slip assembly, the upper slip assembly and the rubber cylinder in the unsealing process, thereby achieving the purposes of improving the success rate of the unsealing operation and avoiding the occurrence of a well clamping accident.
Drawings
The packer for the oil and gas well of the utility model is further described in detail below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the axial cross-section of a packer for oil and gas wells according to the present utility model;
FIG. 2 is an enlarged axial cross-sectional view of a portion of an upper slip assembly of the packer for an oil and gas well of the present utility model;
FIG. 3 is an enlarged axial cross-section of a portion of a setting assembly in a packer for use in an oil and gas well of the present utility model.
Detailed Description
As shown in figure 1, the packer for the oil and gas well comprises a central tube 2, wherein the lower part of the central tube is provided with a limiting ring table 3, the upper end of the central tube is connected with an upper joint 1 through threads, a lower slip assembly 12 for anchoring the packer on the inner wall of a casing from the lower part of the central tube in a first setting stage is sleeved on the outer wall of the central tube above the limiting ring table, an upper slip assembly 4 for anchoring the packer on the inner wall of the casing from the upper part of the central tube in a second setting stage is arranged on the upper end of the central tube, an upper cone 5 matched with the upper slip assembly, a lower cone 10 matched with the lower slip assembly and a rubber sleeve assembly 6 for sealing an oil sleeve annulus in a third setting stage are arranged on the outer wall of the central tube between the rubber sleeve assembly and the lower cone, and a setting assembly 9 capable of applying axial thrust to the lower cone, the upper cone and the rubber sleeve through pressing in the central tube is arranged on the outer wall of the central tube.
As shown in fig. 3, the setting assembly is a setting assembly with a self-locking function, the setting assembly comprises a setting hydraulic cylinder 31 formed by a lower cone, a clamp spring sheath 26 and a connecting sleeve 25 which are sequentially connected in a threaded manner and then are arranged on the outer wall of a central tube, a setting piston is arranged in the setting hydraulic cylinder, the setting piston comprises a piston head 32 and a clamp spring seat 30 integrally connected with the piston head, the inner cylinder wall of the piston head is in sliding sealing fit with the outer wall of the central tube, the outer cylinder wall of the piston head is in sliding sealing fit with the inner wall of the lower cone, sealing rubber rings are respectively arranged on the inner cylinder wall and the outer cylinder wall of the piston head, a shear pin 8 in a first setting stage is arranged between the upper end of the clamp spring seat and the connecting sleeve, a plurality of clamp spring blocks 27 which are matched with the one-way ring teeth to finish one-way locking of the setting piston are arranged in the clamp spring sheath, one-way arc teeth matched with the one-way ring teeth are arranged on the inner wall of the clamp spring blocks, a conical surface 28 which enables the clamp spring blocks to slide towards the one-way ring teeth under the action of gravity and be meshed with the one-way ring teeth is arranged on the inner circumference of the clamp spring sheath, a conical surface 33 matched with the lower end of the clamp spring blocks is arranged at the lower end of the clamp spring seat and a conical head matched with the conical head is arranged on the outer end of the clamp spring sheath, and hydraulic liquid is pressed into a hydraulic cylinder 33 on the central tube.
As shown in FIG. 2, the upper slip assembly comprises an upper slip bowl 15, a plurality of upper slips are arranged in the upper slip bowl, an upper slip bowl supporting ring 17 is arranged between the upper slip bowl and an upper cone, the upper end of the upper slip bowl supporting ring is inserted in an annular space between the upper slip bowl and a central tube, the lower end of the upper slip bowl supporting ring is inserted in the annular space between the upper cone and the central tube, a thrust ring table 20 for transmitting axial thrust to the upper slip bowl supporting ring is arranged at the contact part of the upper cone and the upper slip bowl supporting ring, a stress ring surface matched with the thrust ring table is arranged at the lower end of the upper slip bowl supporting ring, and a shear pin 16 in a second setting stage is arranged between the upper slip bowl supporting ring and the upper slip bowl. The outer wall of the central tube at the lower end of the upper slip seat supporting ring is embedded with a first deblocking baffle ring 19 which applies upward thrust to the lower end of the upper slip seat supporting ring in the process of lifting the central tube so as to push the upper slip seat upwards, the lower end of the upper slip seat supporting ring is provided with a stress end surface matched with the first deblocking baffle ring, and a second deblocking stage shear pin 18 is arranged between the upper slip supporting baffle ring and the upper cone. The first deblocking baffle ring and the second deblocking baffle ring are both C-shaped opening baffle rings.
As shown in fig. 1, the lower slip assembly includes a lower slip bowl 13 in which a plurality of lower slips 11 are mounted, with a first stage of deblocking shear pin 14 mounted between the lower slip bowl and the base pipe. The rubber cylinder assembly comprises a rubber cylinder seat 21 and a single rubber cylinder 22 sleeved on the rubber cylinder seat, a lower outer sleeve 23 is sleeved outside a central tube between the single rubber cylinder and the setting assembly, the lower end of the lower outer sleeve is in threaded connection with the clamp spring seat, the upper end of the lower outer sleeve is sleeved on the outer wall of the rubber cylinder seat and abuts against the lower end of the single rubber cylinder, and a third setting stage shear pin 7 is arranged between the rubber cylinder seat and the lower outer sleeve. A second deblocking ring 24 for applying upward thrust to the lower end of the rubber cylinder seat and releasing the axial pressure of the rubber cylinder in the process of lifting the central tube is embedded on the outer wall of the central tube below the rubber cylinder seat. Sealing rubber rings are arranged on the sealing surfaces of the upper cone and the central tube and the sealing surfaces of the lower cone and the central tube.
The shear strength of the shear pins at the first setting stage, the shear pins at the second setting stage and the shear pins at the third setting stage of the packer for the oil-gas well are sequentially increased.
Setting process: pressing from an oil pipe to a central pipe, enabling pressing liquid to enter a setting hydraulic cylinder, breaking a shear pin in the first setting stage, moving a lower cone, a clamp spring sheath and a connecting sleeve downwards together, expanding a lower slip by the lower cone, anchoring the lower slip on the inner wall of a sleeve, and finishing the fixation of a lower slip assembly; continuing to press from the oil pipe to the central pipe, breaking a shear pin in the second setting stage, and moving the setting piston, the lower outer sleeve, the rubber cylinder assembly, the upper cone and the upper slip seat supporting ring upwards together, wherein the upper cone props up the upper slips, so that the upper slips are anchored on the inner wall of the sleeve, and the fixation of the upper slip assembly is completed; continuing to press from the oil pipe to the central tube, breaking the shear pin in the third setting stage, moving the lower outer sleeve upwards, matching with the rubber cylinder seat to complete extrusion of the single rubber cylinder, expanding the diameter of the single rubber cylinder, closing the annular space between the oil pipe and the sleeve, completing setting, sliding the clamp spring block in the clamp spring sheath to the unidirectional ring teeth of the outer tube wall of the clamp spring seat under the action of gravity and the conical surface, meshing with the unidirectional ring teeth, locking the clamp spring sheath with the lower cone, and preventing the rubber cylinder from retracting after the pressing is finished.
And (3) deblocking process: lifting the central tube through the oil tube, breaking the shear pins in the first deblocking stage, releasing the fixed relation between the central tube and the lower slip seat, enabling the lower cone to move upwards along with the central tube, enabling the lower cone to lose support of the lower slip, and releasing anchoring of the lower slip assembly in the sleeve; the central pipe is lifted continuously through the oil pipe, the first deblocking baffle ring drives the upper slip seat supporting ring to move upwards to push up the upper slip assembly, the shear pins are broken in the second deblocking stage, the upper slip assembly is separated from the upper cone, the upper cone loses the support on the upper slip, and the anchoring of the upper slip assembly in the sleeve is released; and the central pipe is lifted up continuously through the oil pipe, upward thrust is applied to the lower end of the rubber cylinder seat in the second deblocking baffle ring, so that the axial pressure of the single rubber cylinder is relieved, the diameter of the single rubber cylinder is contracted, the sealing of the oil sleeve annulus is invalid, and the packer deblocking is completed.
Claims (7)
1. The utility model provides a packer for oil gas well, includes the center tube that the lower part has the spacing ring platform, and the upper end of center tube has the top through the thread joint, and the center tube outer wall cover above the spacing ring platform is equipped with the lower slips subassembly of anchor the packer at the sleeve pipe inner wall at first setting stage from center tube lower part, is equipped with the upper slips subassembly of anchor the packer at the sleeve pipe inner wall at second setting stage from center tube upper portion on the center tube upper end, characterized by: an upper cone matched with the upper slip assembly, a lower cone matched with the lower slip assembly and a rubber cylinder assembly for sealing the annular space of the oil sleeve in a third setting stage are arranged on the outer wall of the central tube between the upper slip assembly and the lower slip assembly, and a setting assembly capable of applying axial thrust to the lower cone, the upper cone and the rubber cylinder through pressing in the central tube is arranged on the outer wall of the central tube between the rubber cylinder assembly and the lower cone.
2. The packer for oil and gas wells according to claim 1, wherein: the setting assembly is a setting assembly with a self-locking function, the setting assembly comprises a setting hydraulic cylinder which is formed by a lower cone, a clamp spring sheath and a connecting sleeve in sequence in threaded connection and then is arranged on the outer wall of a central tube, a setting piston is arranged in the setting hydraulic cylinder, the setting piston is composed of a piston head and a clamp spring seat which is integrally connected with the piston head, a first setting stage shear pin is arranged between the upper end of the clamp spring seat and the connecting sleeve, unidirectional ring teeth are arranged on the outer tube wall of the clamp spring seat, a plurality of clamp spring blocks which are matched with the unidirectional ring teeth to finish unidirectional locking of the setting piston are arranged in the clamp spring sheath, unidirectional arc teeth matched with the unidirectional ring teeth are arranged on the inner wall of the clamp spring blocks, conical surfaces which enable the clamp spring blocks to slide to the unidirectional ring teeth under the action of gravity are arranged on the inner circumference of the clamp spring sheath, conical heads matched with the conical surfaces are arranged at the lower ends of the clamp spring blocks, and a setting liquid hole for enabling the pressurizing liquid in the central tube to enter the setting hydraulic cylinder is arranged on the central tube wall below the piston head.
3. The packer for an oil and gas well according to claim 2, wherein: the upper slip assembly comprises an upper slip seat, a plurality of upper slips are arranged in the upper slip seat, an upper slip seat supporting ring is arranged between the upper slip seat and an upper cone, the upper end of the upper slip seat supporting ring is inserted into an annular space between the upper slip seat and a central pipe, the lower end of the upper slip seat supporting ring is inserted into an annular space between the upper cone and the central pipe, a thrust ring table for transmitting axial thrust to the upper slip seat supporting ring is arranged at the contact part of the upper cone and the upper slip seat supporting ring, a stress ring surface matched with the thrust ring table is arranged at the lower end of the upper slip seat supporting ring, and a second setting stage shear pin is arranged between the upper slip seat supporting ring and the upper slip seat.
4. A packer for oil and gas wells according to any one of claims 1 to 3, characterized in that: the rubber cylinder assembly comprises a rubber cylinder seat and a single rubber cylinder sleeved on the rubber cylinder seat, a lower outer sleeve is sleeved outside a central pipe between the single rubber cylinder and the setting assembly, the lower end of the lower outer sleeve is in threaded connection with the clamp spring seat, the upper end of the lower outer sleeve is sleeved on the outer wall of the rubber cylinder seat and abuts against the lower end of the single rubber cylinder, and a third setting stage shear pin is arranged between the rubber cylinder seat and the lower outer sleeve.
5. The packer for an oil and gas well of claim 4, wherein: the lower slip assembly comprises a lower slip seat, a plurality of lower slips are arranged in the lower slip seat, and a first deblocking stage shear pin is arranged between the lower slip seat and the central pipe.
6. The packer for oil and gas wells according to claim 5, wherein: the outer wall of the central tube at the lower end of the upper slip seat supporting ring is embedded with a first deblocking baffle ring which applies upward thrust to the lower end of the upper slip seat supporting ring in the process of lifting the central tube so as to push the upper slip seat upwards, the lower end of the upper slip seat supporting ring is provided with a stress end face matched with the first deblocking baffle ring, and a second deblocking stage shear pin is arranged between the upper slip supporting baffle ring and the upper cone.
7. The packer for oil and gas wells according to claim 6, wherein: the second deblocking baffle ring which applies upward thrust to the lower end of the rubber cylinder seat and releases the axial pressure of the rubber cylinder in the process of lifting the central tube is embedded on the outer wall of the central tube below the rubber cylinder seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322042130.9U CN220539601U (en) | 2023-08-01 | 2023-08-01 | Packer for oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322042130.9U CN220539601U (en) | 2023-08-01 | 2023-08-01 | Packer for oil-gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220539601U true CN220539601U (en) | 2024-02-27 |
Family
ID=89975188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322042130.9U Active CN220539601U (en) | 2023-08-01 | 2023-08-01 | Packer for oil-gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220539601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117988761A (en) * | 2024-04-03 | 2024-05-07 | 东北石油大学 | Recyclable pressure-bearing plugging test auxiliary tool |
-
2023
- 2023-08-01 CN CN202322042130.9U patent/CN220539601U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117988761A (en) * | 2024-04-03 | 2024-05-07 | 东北石油大学 | Recyclable pressure-bearing plugging test auxiliary tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220539601U (en) | Packer for oil-gas well | |
| CN209976509U (en) | Recovery type ash squeezing device | |
| CN110617026B (en) | Downhole operation device and method | |
| CN217151896U (en) | High-temperature-resistant metal sealing hanger | |
| CN114575773A (en) | Tail pipe suspension device with top packer and tail pipe suspension assembly | |
| CN211924130U (en) | Ultrashort recoverable packer | |
| CN109441399B (en) | Bridge plug capable of flushing sand | |
| CN110566154B (en) | Ultra-short type removable hydraulic packer | |
| CN217001774U (en) | Thermal recovery packer | |
| CN114961674B (en) | Horizontal section double-pipe subsection shunt synchronous injection and production technology | |
| CN214062907U (en) | Open hole packer for primary multilayer squeeze-injection cement | |
| CN214532895U (en) | Sealing assembly for dissolvable bridge plug and dissolvable bridge plug | |
| CN115680531B (en) | Anti-seize bidirectional anchor and method of use thereof | |
| CN211924128U (en) | Double-piston large-drift-diameter hydraulic recoverable packer | |
| CN212054539U (en) | Hydraulic rigid centralizer | |
| CN114059964B (en) | Hydraulic closing tool for closing sliding sleeve switch and sliding sleeve switch tool assembly | |
| CN110847846B (en) | Packer for oil field exploitation | |
| CN212249945U (en) | Packer around middle layer | |
| CN210105810U (en) | Low-pressure setting and low-tension deblocking packer | |
| CN210622762U (en) | Multifunctional oil testing packer | |
| CN113585995A (en) | Soluble bridge plug capable of being automatically released and using method thereof | |
| CN211397539U (en) | Removable steel wire operation bridge plug | |
| CN219299278U (en) | Thermal recovery packer | |
| CN214697783U (en) | Self-unsealing packer | |
| CN219197286U (en) | Quick-unpacking compression packer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |