CN104265234B - Constant pressure stepped-depacking packer - Google Patents
Constant pressure stepped-depacking packer Download PDFInfo
- Publication number
- CN104265234B CN104265234B CN201410502601.2A CN201410502601A CN104265234B CN 104265234 B CN104265234 B CN 104265234B CN 201410502601 A CN201410502601 A CN 201410502601A CN 104265234 B CN104265234 B CN 104265234B
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- piston
- packer
- well
- central canal
- flushing
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- 238000011010 flushing procedure Methods 0.000 claims abstract description 53
- 238000012856 packing Methods 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000003129 oil well Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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
- E21B33/122—Multiple string packers
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
A kind of novel stepped-depacking packer, it is characterised in that: include top connection, upper joint sleeve, boosting piston, deblocking pin, central canal, spring, well-flushing piston, pressure cap, sealing ring, base, exterior central tube, upper packing element, upper baffle ring, middle packing element, lower baffle ring, lower rubber cylinder, lower joint sleeve, set piston, jump ring set, clip spring seat, jump ring, set pin and lower contact.It is excellent that it has heatproof load performance, it is possible to removes smoothly in oil well, the advantage that simultaneously can realize deblocking in well the most step by step.Can avoid simultaneously conventional gradually deblocking packer when setting, owing to load excessive deblocking pin 4 is cut off in advance, the problem causing packer from opening in advance.
Description
Technical field
The present invention relates to a kind of novel stepped-depacking packer, specifically a kind of constant pressure stepped-depacking packer.
Background technology
At present, Y341 well packer capable of flushing well can only meet the requirement of two to the three layers of separate layer water injection string in oil field substantially, and depositing uses multiple-string packer.When multistage water injection inspection string operation, multiple packers need once to unseal, and the deblocking power of each packer is 5-6 ton, three need more than 18 tons with the deblocking power of upper packer, plus tubing string self gravitation, by 30 tons of ultimate tensions close to workover rig, site operation risk is bigger.And routine gradually deblocking packer can bear bigger load owing to unsealing pin when setting, the deblocking pin of packer when setting easily is occurred to cut off in advance, the problem causing packer from opening in advance.
Summary of the invention
It is an object of the invention to provide a kind of novel stepped-depacking packer, solve the problem that separated-zone water infection oil field well gradually deblocking packer easily occurs to unseal in advance, and realize multiple-string packer and reach the purpose of classification deblocking the most successively.
The technical scheme is that a kind of novel stepped-depacking packer, it is characterized in that: include top connection, upper joint sleeve, boosting piston, deblocking pin, central canal, spring, well-flushing piston, pressure cap, sealing ring, base, exterior central tube, upper packing element, upper baffle ring, middle packing element, lower baffle ring, lower rubber cylinder, lower joint sleeve, set piston, jump ring set, clip spring seat, jump ring, set pin and lower contact, be uniformly distributed along the circumference on the wall of top connection four hollow holes, at each hollow hole built with a boosting piston, top connection is enclosed within outside the upper end of central canal, and deblocking pin is installed between top connection and central canal；Spring housing is contained in outside central canal, makes the upper end of spring withstand on the lower end of top connection；Well-flushing piston bush is outside central canal, the upper end of well-flushing piston and the lower end in contact of spring, upper joint sleeve is enclosed within boosting piston, deblocking pin, central canal, spring and the outside of well-flushing piston, and makes the upper end of upper joint sleeve contact with the leave from office terrace of the outward flange on top connection top；The female thread of pressure cap bottom is connected with the external screw thread on base top, and the upper inner of pressure cap will be located in the sealing ring on base top and compresses, and becomes cooperation squeezed state with sealing ring, and pressure cap is inserted in central canal and extrusion spring makes compressive state；Radially well washing hole circumferentially it is provided with corresponding to the position between pressure cap and well-flushing piston in the bottom of upper joint sleeve；The outside of base is threaded connection with the lower end inside of upper joint sleeve；Exterior central tube is enclosed within outside central canal, and the upper end of exterior central tube and the interior side contacts of base bottom, upper packing element, upper baffle ring, middle packing element, lower baffle ring, lower rubber cylinder are sequentially sleeved in outside exterior central tube from top to bottom；The upper end of lower joint sleeve is enclosed within outside exterior central tube, and with the lower end in contact of lower rubber cylinder；Between exterior central tube and lower joint sleeve and central canal, gap is as well-flushing passage；Set piston bush outside central canal, and threaded with the lower end of lower joint sleeve；Inlet opening it is provided with at piston corresponding to setting at central canal；Jump ring is contained in the cannelure outside clip spring seat, and clip spring seat is enclosed within outside central canal, and is sitting on the step surface outside central canal, and the upper end of this clip spring seat is relative with the lower end setting piston；The top of jump ring set is enclosed within the outside setting piston and clip spring seat, and is threaded connection with the outside setting piston；The draw-in groove of the inverted trapezoidal that a few row coordinates it is provided with jump ring in the inner side of jump ring set lower end；The upper inner of lower contact is threadeded with the lower end outside of central canal, and the lower end making jump ring overlap is sleeved at the undergauge step of lower contact upper end；Install with the upper end socket place of lower contact in the lower end of jump ring set and set pin；It is provided with sawtooth tooth in the inner side of piston.It is provided with radial direction through hole on the wall of the central canal at corresponding spring.
After arriving precalculated position, down-hole under packer, oil pipe is suppressed, hydraulic pressure inlet opening under central canal acts on and sets on piston, set piston and promote lower joint sleeve, jump ring set is up and cuts off and sets pin, compression packing element, packing element diameter under responsive to axial force becomes big and is tightly attached to Seal Oil casing annulus on casing inner diameter；After laying down tubing pressure, jump ring set is locked on clip spring seat by jump ring, and packer is in sealing state all the time；
While set packer suppressed by oil pipe; hydraulic pressure acts on boosting piston through center pipe end inlet opening; boosting piston tightly blocks central canal under the effect of front end sawtooth tooth; overcome the power acted on when setting on deblocking pin; protection deblocking pin is not cut off when high pressure sets state, it is to avoid may the phenomenon that interrupt of deblocking pin during packer setting.
During well-flushing, flushing fluid acts on well-flushing piston through the eyelet of upper joint sleeve, promotes well-flushing piston stroking upward compression spring, and well-flushing passage is opened, flushing fluid through central canal, exterior central tube annular space after flow through packer by the apopore of lower connector；After well-flushing completes, well-flushing piston resets and seal well washing passage under spring force effect.
Upper lifting pipe post, between the packing element and sleeve pipe of packers at different levels under frictional force effect, first upper lifting force acts on the deblocking pin of first order packer, on carry load more than tubing string conduct oneself with dignity time, deblocking pin starts stress, when the power acted on deblocking pin increases to certain load, deblocking pin is cut off, top connection, upper joint sleeve, base and the compression distance of the up packing element of exterior central tube, central canal, lower contact is motionless under frictional force effect between packing elements at different levels and sleeve pipe below first order packer, first order packing element loses pressured state, under its own resilient effect, diameter diminishes, removing seal for packer, continue upper lifting pipe post second level packer and repeat above-mentioned action deblocking, trip out until completing the whole of down-hole string.
The invention has the beneficial effects as follows: it is excellent that it has heatproof load performance, it is possible to removes smoothly in oil well, the advantage that simultaneously can realize deblocking in well the most step by step；Conventional gradually deblocking packer can be avoided simultaneously when setting, owing to load excessive deblocking pin is cut off in advance, cause the phenomenon of packer from opening in advance.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the present invention.
Detailed description of the invention
See Fig. 1, a kind of novel stepped-depacking packer of the present invention, including top connection 1, upper joint sleeve 2, boosting piston 3, deblocking pin 4, central canal 5, spring 6, well-flushing piston 7, pressure cap 8, sealing ring 9, base 10, exterior central tube 11, upper packing element 12, upper baffle ring 13, middle packing element 14, lower baffle ring 15, lower rubber cylinder 16, lower joint sleeve 17, sets piston 18, jump ring set 19, clip spring seat 20, jump ring 21, sets pin 22 and lower contact 23 forms.First after 4 boosting pistons 3 being loaded top connection 1, (be uniformly distributed along the circumference on the wall of top connection 1 four hollow holes, at each hollow hole built with a boosting piston 3), top connection 1 is enclosed within central canal 5, and deblocking pin 4 is installed, spring 6 is inserted on central canal 5, makes the upper end of spring 6 withstand on the lower end of top connection 1.Well-flushing piston 7 is enclosed within outside central canal 5, the upper end of well-flushing piston 7 and the lower end in contact of spring 6, upper joint sleeve 2 is enclosed within boosting piston 3, deblocking pin 4, central canal 5, spring 6, the outside of well-flushing piston 7, and makes the upper end of upper joint sleeve 2 contact with the leave from office terrace of the outward flange 29 on top connection 1 top.The female thread of pressure cap 8 bottom is connected with the external screw thread on base 10 top, the upper inner of pressure cap 8 will be located in the sealing ring 9 on base 10 top and compresses, and after becoming to coordinate squeezed state with sealing ring 9, pressure cap 8 is inserted in central canal 5 and extrusion spring 6 makes compressive state.The outside of base 10 is threaded connection with the lower end inside of upper joint sleeve 2, exterior central tube 11 is enclosed within the outside in the middle part of central canal 5, the upper end of exterior central tube 11 and the interior side contacts of base 10 bottom, be sequentially sleeved in outside exterior central tube 11 from top to bottom by upper packing element 12, upper baffle ring 13, middle packing element 14, lower baffle ring 15, lower rubber cylinder 16.The upper end of lower joint sleeve 17 is enclosed within outside exterior central tube 11, and with the lower end in contact of lower rubber cylinder 16.Piston 18 will be set be enclosed within outside central canal 5, and threaded with the lower end of lower joint sleeve 17；Inlet opening 25 it is provided with at piston 18 corresponding to setting at central canal 5.After being contained on clip spring seat 20 by jump ring 21, being enclosed within outside central canal 5, and be sitting on the step surface 24 outside central canal 5, the upper end of this clip spring seat 20 is relative with the lower end setting piston 18.The top of jump ring set 19 is enclosed within and sets piston 18 and the outside of clip spring seat 20, and be threaded connection with the outside setting piston 18.The upper inner of lower contact 23 is threadeded with the lower end outside of central canal 5, and makes the lower end of jump ring set 19 be sleeved at the undergauge step of lower contact 23 upper end, installs with the upper end socket place of lower contact 23 in the lower end of jump ring set 19 and sets pin 22.It is provided with sawtooth tooth in the inner side of piston 3.Overlap the inner side of 19 lower ends at jump ring and be provided with the draw-in groove 32 of the inverted trapezoidal that a few row coordinates with jump ring 21.
In upper packing element 12, middle packing element 14 and lower rubber cylinder 16; middle packing element 14 elasticity is bigger; stratum is insulated when being mainly responsible for setting; two limit packing elements (upper packing element 12 and lower rubber cylinder 16) act primarily as protective effect; two limit packing elements are less due to structure design reasons elasticity; when packer setting, first compression stress is applied on the packing element of limit, then by limit packing element, part power is passed to middle packing element, and preventing compression stress from crossing in ambassador, packing element deformation is excessive causes damage.
The operation principle of the present invention is:
When setting, to oil pipe, (G.I.H connects the 2 of packer7/8) suppress, hydraulic pressure acts on through central canal 5 lower end inlet opening 25 and sets on piston 18, makes to set piston 18 and moves up；Setting piston 18, to drive lower connector 17 and jump ring to overlap 19 up, and cut off and set pin 22；Three packing elements 12,14,16 of compression simultaneously, packing element diameter under responsive to axial force becomes big and is tightly attached on the internal diameter of tubing and casing, thus seals annular space (i.e. the 2 of G.I.H fastening means of tubing and casing7/8Oil-pipe external wall and the 5 of well itself1/2Annular space between internal surface of sleeve pipe).After laying down tubing pressure, jump ring overlaps 19 lower end insideDraw-in groove 32Locked on clip spring seat 20 by jump ring 21, packer is in sealing state all the time.
While set packer suppressed by described oil pipe; the hydraulic pressure inlet opening 26 through central canal 5 upper end acts on boosting piston 3; boosting piston 3 tightly blocks central canal 5 under the effect of front end sawtooth tooth; overcome the power acted on when setting on deblocking pin 4; protection deblocking pin 4 is not cut off when high pressure sets state, it is to avoid may the phenomenon that interrupt of deblocking pin 4 during packer setting.It is provided with radial direction through hole 27 on the wall of the central canal 5 at corresponding spring 6, radial direction through hole 27 is that flushing fluid acts on well-flushing piston 7 through the eyelet of upper joint sleeve 2 when well-flushing, it is now the pressure in the annular space of described tubing and casing at the eyelet of upper joint sleeve 2, pressure acts on the lower end of well-flushing piston 7 herein, and owing to existence well-flushing piston 7 upper end of radial direction through hole 27 is the pressure in oil pipe, during well-flushing, tubing and casing pressure is more than oil overpressure, so well-flushing piston 7 can be made up, if there is no radial direction through hole 27, well-flushing piston 7 upper end then can be caused to be in an air chamber state closed, when on well-flushing piston 7, guild causes in the compressed-air actuated result of confined space, so having radial direction through hole 27 oil overpressure is imported to well-flushing piston 7 upper end, it is made to produce pressure differential when well-flushing.
The present invention is when well-flushing, flushing fluid acts on well-flushing piston 7 through the well washing hole 31 of upper joint sleeve 2, promote well-flushing piston 7 up and compression spring 6, well-flushing passage 30 is opened, and flushing fluid flows through packer by the apopore 28 of lower joint sleeve 17 after the annular space between central canal 5 and exterior central tube 11.After well-flushing completes, well-flushing piston 7 resets and seal well washing passage under spring 6 elastic force effect.
When the present invention unseals, upper lifting pipe post, in packing element and sleeve pipe (the 5 of well itself of packers at different levels1/2Sleeve pipe) between under frictional force effect, first upper lifting force acts on the deblocking pin 4 of first order packer, on carry load more than tubing string conduct oneself with dignity time, deblocking pin 4 starts stress, when the power acted on deblocking pin 4 increases to certain load, deblocking pin 4 is cut off, the distance of the compression of top connection 1, upper joint sleeve 2, base 10 and the up packing element of exterior central tube 11, central canal 5, packing element 12,14,16 and sleeve pipe (the 5 of well itself of lower contact 23 packers at different levels below first order packer1/2Sleeve pipe) between motionless under frictional force effect, the packing element (12,14,16) of first order packer loses pressured state, and under its own resilient effect, diameter diminishes, first order removing seal for packer, continuing upper lifting pipe post second level packer and repeat above-mentioned action deblocking, tripping out until completing the whole of down-hole string.When application, every mouthful of well can be placed with several packers at the position of stratum specified according to geology needs.
Claims (5)
- null1. a constant pressure stepped-depacking packer，It is characterized in that: include top connection (1)、Upper joint sleeve (2)、Boosting piston (3)、Deblocking pin (4)、Central canal (5)、Spring (6)、Well-flushing piston (7)、Pressure cap (8)、Sealing ring (9)、Base (10)、Exterior central tube (11)、Upper packing element (12)、Upper baffle ring (13)、Middle packing element (14)、Lower baffle ring (15)、Lower rubber cylinder (16)、Lower joint sleeve (17)、Set piston (18)、Jump ring set (19)、Clip spring seat (20)、Jump ring (21)、Set pin (22) and lower contact (23)，Be uniformly distributed along the circumference on the wall of top connection (1) four hollow holes，At each hollow hole built with a boosting piston (3)，Top connection (1) is enclosed within outside the upper end of central canal (5)，And deblocking pin (4) is installed between top connection (1) and central canal (5)；Spring (6) is sleeved on central canal (5) outward, makes the upper end of spring (6) withstand on the lower end of top connection (1)；Well-flushing piston (7) is enclosed within central canal (5) outward, the upper end of well-flushing piston (7) and the lower end in contact of spring (6), upper joint sleeve (2) is enclosed within boosting piston (3), deblocking pin (4), central canal (5), spring (6) and the outside of well-flushing piston (7), and makes the upper end of upper joint sleeve (2) contact with the leave from office terrace (29) of the outward flange on top connection (1) top；The female thread of pressure cap (8) bottom is connected with the external screw thread on base (10) top, the upper inner of pressure cap (8) will be located in the sealing ring (9) on base (10) top and compresses, and become to coordinate squeezed state with sealing ring (9), and pressure cap (8) is inserted in central canal (5) and extrusion spring (6) makes compressive state；Radially well washing hole (31) circumferentially it is provided with corresponding to the position between pressure cap (8) and well-flushing piston (7) in the bottom of upper joint sleeve (2)；The outside of base (10) is threaded connection with the lower end inside of upper joint sleeve (2)；Exterior central tube (11) is enclosed within central canal (5) outside, the upper end of exterior central tube (11) and the interior side contacts of base (10) bottom, upper packing element (12), upper baffle ring (13), middle packing element (14), lower baffle ring (15), lower rubber cylinder (16) are sequentially sleeved in exterior central tube (11) outward from top to bottom；The upper end of lower joint sleeve (17) is enclosed within exterior central tube (11) outside, and with the lower end in contact of lower rubber cylinder (16)；Between exterior central tube (11) and lower joint sleeve (17) and central canal (5), gap is as well-flushing passage (30)；Set piston (18) and be enclosed within central canal (5) outside, and threaded with the lower end of lower joint sleeve (17)；It is provided with inlet opening (25) corresponding to setting piston (18) place at central canal (5)；Jump ring (21) is contained in the cannelure in clip spring seat (20) outside, and clip spring seat (20) is enclosed within central canal (5) outside, and is sitting on the step surface (24) in central canal (5) outside, and the upper end of this clip spring seat (20) is relative with the lower end setting piston (18)；The top of jump ring set (19) is enclosed within and sets piston (18) and the outside of clip spring seat (20), and is threaded connection with the outside setting piston (18)；The draw-in groove (32) of the inverted trapezoidal that a few row coordinates it is provided with jump ring (21) in the inner side of jump ring set (19) lower end；The upper inner of lower contact (23) is threadeded with the lower end outside of central canal (5), and makes the lower end of jump ring set (19) be sleeved at the undergauge step of lower contact (23) upper end；Upper end socket place in the lower end of jump ring set (19) with lower contact (23) is installed and is set pin (22)；It is provided with sawtooth tooth in the inner side of piston (3).
- Constant pressure stepped-depacking packer the most according to claim 1, it is characterised by, after arriving precalculated position, down-hole under packer, oil pipe is suppressed, hydraulic pressure inlet opening under central canal (5) acts on and sets on piston (18), sets piston (18) and promotes lower joint sleeve (17), and jump ring set (19) is up and cuts off and sets pin (22), compression packing element, packing element diameter under responsive to axial force becomes big and is tightly attached to Seal Oil casing annulus on casing inner diameter；After laying down tubing pressure, jump ring set (19) is locked on clip spring seat (20) by jump ring (21), and packer is in sealing state all the time；While set packer suppressed by oil pipe; hydraulic pressure acts on boosting piston (3) through central canal (5) upper end inlet opening; boosting piston (3) tightly blocks central canal (5) under the effect of front end sawtooth tooth; overcome the power acted on when setting in deblocking pin (4); protection deblocking pin (4) is not cut off when high pressure sets state, it is to avoid may the phenomenon that interrupt of deblocking pin (4) during packer setting.
- Constant pressure stepped-depacking packer the most according to claim 1, it is characterised by, during well-flushing, flushing fluid acts on well-flushing piston (7) through the eyelet of upper joint sleeve (2), promote well-flushing piston (7) up and compression spring (6), well-flushing passage is opened, flushing fluid through central canal (5), exterior central tube (11) annular space after flow through packer by the apopore of lower joint sleeve (17)；After well-flushing completes, well-flushing piston (7) resets and seal well washing passage under spring (6) elastic force effect.
- nullConstant pressure stepped-depacking packer the most according to claim 1，It is characterised by，Upper lifting pipe post，Between the packing element and sleeve pipe of packers at different levels under frictional force effect，First upper lifting force acts on the deblocking pin (4) of first order packer，On carry load more than tubing string conduct oneself with dignity time，Deblocking pin (4) starts stress，When the power acted on deblocking pin increases to certain load，Deblocking pin (4) is cut off，Top connection (1)、Upper joint sleeve (2)、Base (10) and exterior central tube (11) Top Runby are the compression distance of packing element，Central canal (5)、Lower contact (23) is motionless under frictional force effect between packing elements at different levels and sleeve pipe below first order packer，First order packing element loses pressured state，Under its own resilient effect, diameter diminishes，Removing seal for packer，Continue upper lifting pipe post second level packer and repeat above-mentioned action deblocking，Trip out until completing the whole of down-hole string.
- Constant pressure stepped-depacking packer the most according to claim 1, is characterised by, is provided with radial direction through hole (27) on the wall of the central canal (5) at corresponding spring (6) place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410502601.2A CN104265234B (en) | 2014-09-28 | 2014-09-28 | Constant pressure stepped-depacking packer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410502601.2A CN104265234B (en) | 2014-09-28 | 2014-09-28 | Constant pressure stepped-depacking packer |
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| Publication Number | Publication Date |
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| CN104265234A CN104265234A (en) | 2015-01-07 |
| CN104265234B true CN104265234B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410502601.2A Active CN104265234B (en) | 2014-09-28 | 2014-09-28 | Constant pressure stepped-depacking packer |
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| CN (1) | CN104265234B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929563B (en) * | 2015-05-27 | 2017-10-17 | 中国石油天然气股份有限公司 | Water injection packer |
| CN109386251B (en) * | 2017-08-02 | 2023-09-26 | 中国石油天然气股份有限公司 | Squeeze-injection plugging device |
| CN109681146B (en) * | 2018-04-16 | 2024-07-19 | 中国石油化工股份有限公司 | Double-medium multistage expansion packer and clamping method |
| CN111005700B (en) * | 2018-10-08 | 2021-11-30 | 中国石油化工股份有限公司 | Quick-release hydraulic control packer and construction method |
| CN110685625B (en) * | 2019-11-01 | 2024-06-25 | 辽宁新华仪器有限公司 | Hydraulic roof-proof anti-drop tool |
| CN111456672B (en) * | 2020-04-01 | 2022-04-26 | 大庆市地油石油机械有限公司 | Hydraulic expansion type packer |
| CN111852388A (en) * | 2020-08-05 | 2020-10-30 | 中石化石油工程技术服务有限公司 | Packer grading and unpacking device |
| CN112012688B (en) * | 2020-10-16 | 2022-07-15 | 山东大东联石油设备有限公司 | Relay seat-sealing type packer and method |
| CN113445958B (en) * | 2021-05-26 | 2023-04-11 | 中国海洋石油集团有限公司 | Compression packer |
| CN118481563B (en) * | 2024-07-09 | 2025-05-09 | 大庆市海兴石油科技发展有限公司 | Packer |
| CN118498922B (en) * | 2024-07-18 | 2024-10-01 | 山东圣颐石油技术开发有限公司 | A sealing balance device with fluid replenishment function |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180132A (en) * | 1978-06-29 | 1979-12-25 | Otis Engineering Corporation | Service seal unit for well packer |
| RU2105862C1 (en) * | 1995-01-26 | 1998-02-27 | Акционерное общество открытого типа "Удмуртнефть" | Packer |
| CN201953346U (en) * | 2011-03-07 | 2011-08-31 | 大庆金源达机械有限公司 | Compression type step-by-step deblocking packer |
| CN102337854B (en) * | 2011-09-05 | 2014-08-27 | 梁伟成 | Washable well type gradual unpacking packer |
| CN203499628U (en) * | 2012-12-25 | 2014-03-26 | 梁伟成 | Well washing type step-by-step deblocking expandable long rubber sleeve packer |
| CN203347736U (en) * | 2013-07-18 | 2013-12-18 | 陈成才 | Water-injection packer capable of being subjected to deblocking step by step |
| CN204175230U (en) * | 2014-09-28 | 2015-02-25 | 康庆刚 | Constant pressure stepped-depacking packer |
-
2014
- 2014-09-28 CN CN201410502601.2A patent/CN104265234B/en active Active
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| CN104265234A (en) | 2015-01-07 |
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Effective date of registration: 20190819 Address after: Heilongjiang province Daqing City Honggang District 163000 Qing Nan Industrial Park Patentee after: Daqing Kangsheng Petroleum Energy-saving Technology Development Co., Ltd. Address before: 163000 Xiyuan Street, Ximen, Guangxia New City, Jeanhu Road District, Daqing City, Heilongjiang Province, 193 Patentee before: Kang Qinggang |