CN115434656A - Long-acting hydraulic cylinder type expansion packer - Google Patents
Long-acting hydraulic cylinder type expansion packer Download PDFInfo
- Publication number
- CN115434656A CN115434656A CN202210969202.1A CN202210969202A CN115434656A CN 115434656 A CN115434656 A CN 115434656A CN 202210969202 A CN202210969202 A CN 202210969202A CN 115434656 A CN115434656 A CN 115434656A
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- Prior art keywords
- sliding
- fixed connection
- shell
- long
- acting hydraulic
- 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.)
- Pending
Links
- 238000012856 packing Methods 0.000 claims abstract description 17
- 238000013519 translation Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 239000003129 oil well Substances 0.000 abstract description 10
- 238000005086 pumping Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 23
- 230000000903 blocking effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 210000000078 claw Anatomy 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a long-acting hydraulic cylinder type expansion packer, which belongs to the technical field of oilfield development and production and comprises a shell and two packing sleeves in sliding connection with the shell, wherein a positioning assembly for positioning and centering is arranged on the shell, an adjusting assembly for adjusting and limiting is arranged on the positioning assembly, a sliding rod ring, a jaw seat and a plurality of jaws are arranged on the positioning assembly, the jaws are rotatably connected with the jaw seat, the sliding rod ring is in sliding connection with the jaw seat, the sliding rod ring is in intermittent fit with the jaws, a clamping pin column and a rotating rod are arranged on the adjusting assembly, and the clamping pin column is matched with the rotating rod. Make the packer can stop temporarily in the oil well when not packing the during operation through the cooperation of locating component and adjustment subassembly, and stabilize and stop in a position, prevent that the packer from taking place to rock the striking in the oil well, realize a lot of setting, for the oil pumping provide stable helping hand, last the function of pumping oil when wasing the oil well.
Description
Technical Field
The invention relates to the technical field of oilfield development and production, in particular to a long-acting hydraulic cylinder type expansion packer.
Background
Oil extraction refers to the act of mining and extracting oil in places where oil is stored. The wax deposition of an oil well is a long-standing problem in the oil field development process, when crude oil is pumped to the ground from the underground, the temperature of the crude oil is gradually reduced due to the escape and expansion of dissolved gas, wax is crystallized and separated out from the crude oil according to the size of molecular weight and then deposited on the inner wall of an oil pipe, so that a shaft is narrowed, the yield of the oil well is reduced, the oil pipe is seriously blocked to stop the production of the oil well, when the hot washing wax removal operation is carried out, in order to prevent hot washing liquid from being directly injected into an oil layer to cause the pollution of the oil layer, a packer is required to be connected into the oil pipe for sealing an oil sleeve annulus, the existing packer has poor sealing timeliness, the existing packer needs to be fixed by a pin before setting in the midway, the setting is prevented, the setting pin is cut by utilizing the gravity of a pipe column and the pressure of high-pressure liquid during the setting, but the design is irreversible during the operation, the repeated setting cannot be carried out, the recovery is not convenient, the oil pumping operation is interrupted during the cleaning, the efficiency is reduced, and great inconvenience is brought to the subsequent work.
The utility model with the publication number of CN203188969U in the prior art provides a hot washing paraffin removal packer, which comprises a central tube, wherein the upper end of the central tube is connected with an upper joint, the middle part of the central tube is sleeved with a plurality of rubber cylinders, the lower end of the central tube is connected with a lower joint, a rubber cylinder seat is movably sleeved on the central tube at the upper side of the rubber cylinder at the uppermost end, a support sleeve is arranged at the upper side of the rubber cylinder seat, a lock sleeve is arranged between the support sleeve and the rubber cylinder seat, matched inverted teeth are correspondingly arranged on the inner circumference of the lock sleeve and the periphery of the central tube at the lower side of the lock sleeve, an upper hydraulic cylinder communicated with the central tube is arranged at the upper side of the support sleeve, and a seat seal pin is arranged between the upper end of the upper hydraulic cylinder body and the upper joint; be equipped with between center tube periphery of lowermost end packing element downside and the lower clutch with the last balance cylinder and the lower balance cylinder of center tube intercommunication, threaded connection separates the cover between lower balance cylinder body downside and the lower clutch periphery, separates the cover and is equipped with the deblocking screw with the lower clutch periphery. The device advantage is in avoiding the packer to set up in advance when going into the well to it is sealed reliable, can prevent effectively that the flushing fluid from polluting the oil reservoir, but it does not solve above-mentioned problem.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: realize multiple seat seals, provide stable helping hand for pumping oil, continuously pump oil when wasing the oil well.
Aiming at the technical problems, the invention adopts the technical scheme that: the utility model provides a long-term cylinder type expansion packer, includes the casing and with two packing spacer of casing sliding connection, the casing on be provided with and be used for location and centering locating component, locating component on be provided with and be used for adjusting spacing adjustment assembly, locating component on be provided with slide bar circle, jack catch seat and a plurality of jack catch, jack catch and jack catch seat rotate to be connected, slide bar circle and jack catch seat sliding connection, slide bar circle and jack catch intermittent type cooperation, adjustment assembly on be provided with bayonet lock post, dwang, bayonet lock post and dwang form the cooperation.
Furthermore, the casing on two sliding sleeves of sliding connection, form the cavity between sliding sleeve and the casing, packing sleeve and sliding sleeve form the cooperation, be provided with the casing on the packing subassembly, fixed connection pressure pipe on the casing, the pressure pipe on be provided with the trompil, trompil and casing, sliding sleeve between the cavity intercommunication.
Furthermore, the jaw seat is fixedly connected with the front end shell, the front end shell is fixedly connected with the shell, one end of the front end shell is provided with a plurality of hole grooves, the ring surface of the front end shell is also provided with a plurality of hole grooves, and the jaw is provided with a plurality of sawtooth-shaped grooves.
Furthermore, the claw seat on sliding connection slide bar circle, the slide bar circle fixed connection oil pipe, the slide bar circle fixed connection several sealing strip, the claw seat on fixed connection column section of thick bamboo, column section of thick bamboo respectively with slide bar circle, sealing strip sliding connection.
Furthermore, the jaw seat is fixedly connected with a support, two sides of the support are respectively rotatably connected with a rotating jaw, and the sliding rod ring is intermittently matched with the rotating jaw.
Furthermore, the support on two guide rail post of fixed connection, the guide rail post on sliding connection sliding shaft, the support on two spring of fixed connection I, spring I and the concentric setting of guide rail post, sliding rod circle and sliding shaft intermittent type cooperation, the sliding shaft on fixed connection joint pin post.
Further, the support on fixed connection support chassis, a set of mount of fixed connection on the support chassis, fixed sleeve of fixed connection on the mount, fixed sleeve on fixed connection spring II, fixed connection translation frame on the spring II, the mount on rotate and connect two sets of dwangs, rotate on every group dwang and connect a set of connecting rod, translation frame and connecting rod sliding connection, translation frame and mount sliding connection, translation frame and fixed sleeve sliding connection, the card round pin post form the cooperation with the dwang.
Furthermore, the fixed sleeve on sliding connection block axle, block epaxial fixed connection spring III, the III other ends fixed connection of spring on fixed sleeve, block axle one end fixed connection block piece, the block piece on set up the trompil.
Compared with the prior art, the invention has the beneficial effects that: (1) The packer is enabled to increase pressure through the outside after reaching the set position by arranging the positioning assembly, so that the packer realizes the functions of self-centering and positioning in an oil well; (2) The packer is suspended at a certain position when not being retracted, so that the packer cannot shake and impact in an oil well, and meanwhile, an oil pipe is more stable when oil is pumped, and the working efficiency is improved; (3) Through the cooperation of adjustment subassembly and locating component for the packer can set up many times and pack up in arbitrary setting position, has increased the flexibility.
Drawings
Fig. 1 is a schematic view (front view) of the overall structure of the present invention.
Fig. 2 is a schematic view (from a top view) of the overall structure of the present invention.
FIG. 3 is a schematic cross-sectional view of the present invention.
FIG. 4 is a partial structural schematic diagram of the present invention.
Fig. 5 is a schematic structural diagram of the positioning assembly.
Fig. 6 is a schematic structural diagram of the positioning assembly and the adjusting assembly.
Fig. 7 is a partial structural schematic diagram of the positioning assembly.
Fig. 8 is a schematic structural diagram of the adjustment assembly.
Fig. 9 is a first partial structural diagram of an adjustment assembly.
Fig. 10 is a partial structural diagram of the second adjusting assembly.
Fig. 11 is a third schematic view of a partial structure of the adjustment assembly.
Reference numerals: 1-packing assembly; 2-a positioning assembly; 3-adjusting the component; 101-packing sleeve; 102-a housing; 103-a sliding sleeve; 104-pressure tube; 105-tubing; 201-front end housing; 202-jaws; 203-sliding rod ring; 204-cylindrical barrel; 205-a sealing strip; 206-jaw seat; 301-a scaffold; 302-a rack chassis; 303-rotating the jaws; 304-a sliding shaft; 305-guide rail columns; 306-spring i; 307-bayonet posts; 308-a fixed sleeve; 309-spring II; 310-a translation frame; 311-a connecting rod; 312-rotating rod; 313-a fixing frame; 314-a blocking sheet; 315-blocking shaft; 316-spring iii.
Detailed Description
The technical scheme of the invention is further explained by the specific embodiment in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example (b): as shown in fig. 1-4, the packing assembly 1 comprises two packing sleeves 101, a housing 102, a sliding sleeve 103, a pressure pipe 104 and an oil pipe 105, the housing 102 is slidably connected with the two packing sleeves 101 and the sliding sleeve 103, a cavity is formed between the sliding sleeve 103 and the housing 102, the packing sleeves 101 are pressed when the sliding sleeve 103 slides, so that the height of the packing sleeves 101 is reduced and the radius is increased, the pressure pipe 104 is fixedly connected with the housing 102, an opening is formed in the pressure pipe 104, the opening is communicated with the cavity between the housing 102 and the sliding sleeve 103, a positioning assembly 2 for positioning and centering is arranged on the housing 102, a front end housing 201 is fixedly connected with the housing 102 on the positioning assembly 2, and the pressure pipe 104 is filled with hydraulic oil.
As shown in fig. 5-7, a jaw seat 206 is fixedly connected to the front end housing 201, a plurality of holes are formed in one end of the front end housing 201, a plurality of holes are also formed in an annular surface of the front end housing 201, a plurality of jaws 202 are rotatably mounted on the jaw seat 206, a torsion spring is disposed at the rotating mounting position, so that the jaws 202 are always subjected to a contracting force, a plurality of saw-toothed grooves are formed in the jaws 202, the jaws 202 slide in the holes formed in the annular surface of the front end housing 201, a sliding rod ring 203 is slidably connected to the jaw seat 206, an oil pipe 105 is fixedly connected to the sliding rod ring 203, the oil pipe 105 is communicated to one surface of the jaw seat 206, which is close to the support 301, a plurality of sealing strips 205 are fixedly connected to the sliding rod ring 203, a cylindrical tube 204 is fixedly connected to the jaw seat 206, a plurality of holes are formed in the annular surface of the cylindrical tube 204, and used for displacement of the sliding rod ring 203, the sealing strips 205, the pressure pipe 104 is communicated with the cylindrical tube 204, and when the sliding rod ring 203 is displaced downwards, the sliding rod 205 is used for sealing strips to seal the holes formed in the grooves formed in the cylindrical tube 204, so that the sliding surfaces of the jaws 202 are pressed outwards, and the front end housing 201 can be positioned and positioned after the front end housing is expanded.
As shown in fig. 6 to 8, an adjusting assembly 3 for adjusting a limit is disposed on the positioning assembly 2, a support 301 disposed on the adjusting assembly 3 is fixedly connected to the jaw base 206, two sides of the support 301 are respectively rotatably connected to a rotating jaw 303, two guide posts 305 are fixedly connected to the support 301, a sliding shaft 304 is slidably connected to the guide posts 305, two springs i 306 are fixedly connected to the support 301, the springs i 306 and the guide posts 305 are concentrically disposed, and a jaw post 307 is fixedly connected to the sliding shaft 304, so that when the sliding ring 203 moves downward, the sliding shaft 304 pushes the sliding shaft 304 to move downward, at this time, the sliding shaft 304 expands an end of the rotating jaw 303 close to the jaw post 307, and contracts an end close to the jaw base 206, and when the end of the rotating jaw 303 close to the jaw base 206 contracts, an axis of the sliding ring 203 is clamped, so that the sliding ring 203 cannot be reset.
As shown in fig. 8-10, a bracket chassis 302 is fixedly connected to the bracket 301, a set of fixing frame 313 is fixedly connected to the bracket chassis 302, a fixing sleeve 308 is fixedly connected to the fixing frame 313, a spring ii 309 is fixedly connected to the fixing sleeve 308, a translation frame 310 is fixedly connected to the spring ii 309, two sets of rotating rods 312 are rotatably connected to the fixing frame 313, a set of connecting rods 311 is rotatably connected to each set of rotating rods 312, the translation frame 310 is slidably connected to the connecting rods 311, the translation frame 310 is slidably connected to the fixing frame 313, the translation frame 310 is slidably connected to the fixing sleeve 308, a blocking shaft 315 is slidably connected to the fixing sleeve 308, a spring iii 316 is fixedly connected to the blocking shaft 315, the other end of the spring iii 316 is fixedly connected to the fixing sleeve 308, one end of the blocking shaft 315 is fixedly connected to a blocking plate 314, an opening is formed in the blocking plate 314, when the translation frame 310 is pressed down, oil can overcome the elastic force of the spring iii 316 to flush the blocking plate 314, and when the translation frame 310 is moved up, oil can only slowly enter the opening of the blocking plate 314.
The working principle is as follows: after the packer is placed at a preset position, the pressure pipe 104 is pressurized, so that the sliding rod ring 203 displaces downwards, in the displacement process of the sliding rod ring 203, the sliding rod ring 203 enables the jaws 202 to expand to position and center, the packer is fixed at the position, meanwhile, the central shaft of the sliding rod ring 203 presses the sliding shaft 304 downwards, the sliding shaft 304 overcomes the elastic force of the spring I306 to displace along the guide rail column 305, the sliding shaft 304 displaces to press the clamping pin column 307 downwards, the clamping pin column 307 penetrates through the rotating rod 312 to press the movable frame 310 downwards, after the movable frame 310 cannot be pressed downwards again, the pressure in the pressure pipe 104 is still maintained, at the moment, oil in the pressure pipe 104 begins to flow into a cavity between the sliding sleeve 103 and the shell 102, the cavity is gradually enlarged, even if the sliding sleeve 103 extrudes the packing sleeve 101 in a sliding mode, at the height of the packing sleeve 101 is increased by a compression radius to perform packing work, and at the moment, the cleaning work of an oil well can be performed.
When the packer needs to be removed but does not need to be taken out, the pressure in the pressure pipe 104 is slowly removed, at the moment, the translation frame 310 and the bayonet column 307 synchronously move, then the translation frame 310 resets to stop the movement, and the bayonet column 307 moves upwards again, but the rotating rod 312 is closed, so that the bayonet column 307 cannot move upwards again after moving to the rotating rod 312, namely, the sliding shaft 304 still enables the rotating claw 303 to clamp the sliding rod ring 203, namely, the claw 202 still expands outwards to perform positioning work at the moment, the packer sleeve 101 resets and does not need to be separated again, and the packer hovers at the position, so that the packer can be prevented from shaking at the moment, and stable help is also provided for pumping.
When the packer needs to be removed and taken out, the pressure in the pressure pipe 104 is removed quickly, at the moment, because the pressure disappears, the sliding shaft 304 is only affected by the elastic force of the spring I306 and is not blocked by the pressure, the sliding shaft 304 drives the clamping pin column 307 to move upwards quickly, because the rotating rod 312 is closed slowly, the clamping pin column 307 can pass through the rotating rod 312 to reset, the sliding shaft 304 no longer enables the rotating clamping jaw 303 to clamp the sliding rod ring 203, the clamping jaw 202 is closed slowly under the action of the torsion spring between the clamping jaw 202 and the clamping jaw seat 206, and at the moment, the packer can be taken out or the position of the packer can be changed.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (8)
1. A long-acting hydraulic cylinder type expansion packer comprises a shell (102) and two packing sleeves (101) which are connected with the shell (102) in a sliding mode, and is characterized in that: casing (102) on be provided with locating component (2) that are used for location and centering, locating component (2) on be provided with and be used for adjusting spacing adjustment assembly (3), locating component (2) on be provided with slide bar circle (203), jack catch seat (206) and several jack catch (202), jack catch (202) rotate with jack catch seat (206) and be connected, slide bar circle (203) and jack catch seat (206) sliding connection, slide bar circle (203) and jack catch (202) intermittent type cooperation, adjustment assembly (3) on be provided with bayonet catch post (307), dwang (312), bayonet catch post (307) and dwang (312) form the cooperation.
2. The long-acting hydraulic expansion packer as claimed in claim 1, wherein: the sealing and isolating device is characterized in that two sliding sleeves (103) are connected on the shell (102) in a sliding mode, a cavity is formed between the sliding sleeves (103) and the shell (102), a sealing and isolating sleeve (101) is matched with the sliding sleeves (103), the shell (102) is arranged on the sealing and isolating assembly (1), a pressure pipe (104) is fixedly connected on the shell (102), an opening is formed in the pressure pipe (104), and the opening is communicated with the cavity between the shell (102) and the sliding sleeves (103).
3. The long-acting hydraulic cylinder type expansion packer as claimed in claim 1, wherein: the clamping jaw is characterized in that the clamping jaw seat (206) is fixedly connected with the front end shell (201), the front end shell (201) is fixedly connected with the shell (102), one end of the front end shell (201) is provided with a plurality of hole grooves, the ring surface of the front end shell (201) is also provided with a plurality of hole grooves, and the clamping jaw (202) is provided with a plurality of sawtooth-shaped grooves.
4. The long-acting hydraulic expansion packer as claimed in claim 3, wherein: pawl seat (206) on sliding connection sliding rod circle (203), sliding rod circle (203) on fixed connection oil pipe (105), sliding rod circle (203) on fixed connection several sealing strip (205), pawl seat (206) on fixed connection cylindrical section of thick bamboo (204), cylindrical section of thick bamboo (204) respectively with sliding rod circle (203), sealing strip (205) sliding connection.
5. The long-acting hydraulic cylinder type expansion packer as claimed in claim 4, wherein: fixed connection support (301) on jack catch seat (206), support (301) both sides rotate respectively and connect one and rotate jack catch (303), slide bar circle (203) with rotate jack catch (303) intermittent type cooperation.
6. The long-acting hydraulic cylinder type expansion packer as claimed in claim 5, wherein: support (301) on two guide rail post of fixed connection (305), guide rail post (305) on sliding connection sliding shaft (304), support (301) on two spring I (306) of fixed connection, spring I (306) and guide rail post (305) concentric setting, sliding rod circle (203) and sliding shaft (304) intermittent type cooperation, sliding shaft (304) on fixed connection bayonet catch post (307).
7. The long-acting hydraulic expansion packer as claimed in claim 6, wherein: support (301) on fixed connection support chassis (302), a set of mount of fixed connection (313) is gone up on support chassis (302), fixed sleeve (308) of fixed connection on mount (313), fixed sleeve (308) on fixed connection spring II (309), fixed connection translation frame (310) is gone up on spring II (309), mount (313) on rotate and connect two sets of dwang (312), rotate on every group dwang (312) and connect a set of connecting rod (311), translation frame (310) and connecting rod (311) sliding connection, translation frame (310) and mount (313) sliding connection, translation frame (310) and fixed sleeve (308) sliding connection, bayonet lock post (307) and dwang (312) form the cooperation.
8. The long acting hydraulic expansion packer of claim 7, wherein: fixed sleeve (308) go up sliding connection and seal and hinder axle (315), seal and hinder epaxial fixed connection spring III (316) of (315), spring III (316) other end fixed connection is on fixed sleeve (308), seals and hinders axle (315) one end fixed connection and seals piece (314), block piece (314) on set up the trompil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210969202.1A CN115434656A (en) | 2022-08-12 | 2022-08-12 | Long-acting hydraulic cylinder type expansion packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210969202.1A CN115434656A (en) | 2022-08-12 | 2022-08-12 | Long-acting hydraulic cylinder type expansion packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115434656A true CN115434656A (en) | 2022-12-06 |
Family
ID=84242796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210969202.1A Pending CN115434656A (en) | 2022-08-12 | 2022-08-12 | Long-acting hydraulic cylinder type expansion packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115434656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291298A (en) * | 2023-04-24 | 2023-06-23 | 阜宁县宏达石化机械有限公司 | Completion packer with dislocation preventing structure |
-
2022
- 2022-08-12 CN CN202210969202.1A patent/CN115434656A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291298A (en) * | 2023-04-24 | 2023-06-23 | 阜宁县宏达石化机械有限公司 | Completion packer with dislocation preventing structure |
| CN116291298B (en) * | 2023-04-24 | 2023-10-03 | 阜宁县宏达石化机械有限公司 | Completion packer with dislocation preventing structure |
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