CN201057016Y - Hydraulic self-sealing slip packer - Google Patents
Hydraulic self-sealing slip packer Download PDFInfo
- Publication number
- CN201057016Y CN201057016Y CNU2007201517788U CN200720151778U CN201057016Y CN 201057016 Y CN201057016 Y CN 201057016Y CN U2007201517788 U CNU2007201517788 U CN U2007201517788U CN 200720151778 U CN200720151778 U CN 200720151778U CN 201057016 Y CN201057016 Y CN 201057016Y
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- central tube
- piston
- envelope
- packer
- testing
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- Expired - Lifetime
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Abstract
The utility model relates to a hydraulic type sealing self-inspecting slip packer, which can realize the operation of packer setting and packer detecting to be accomplished at one time. The structure of the utility model is composed of a lower part entering desterilizing mechanism at the upper part, a setting and packer detecting mechanism, a locking mechanism, a pressure transmitting anchoring mechanism and lower part anti-twisting connecting mechanism from the upper part to the lower part in sequence, wherein the setting and packer detecting mechanism consists of upper and lower rubber pipe groups and a packer detecting component. During the process of the packer setting, pressurization is performed from an oil pipe, the high pressure liquid transmits the pressure to a control piston and a descending piston via the pressure transmitting hole of a central pipe, the descending piston descends to open up the slip and to anchor the slip on a sleeve pipe, the piston rise is controlled, the rubber pipe is compressed, the circular space of the oil sleeve pipe is packed, and simultaneously, the locking mechanism prevents packer parts to be rebounded; during the packer detecting, pressurization is continued, the liquid enters into a sealed circular cavity formed by a sleeve pipe, an outer pipe and a rubber pipe formed after compression and expansion, and the sealing performance of the rubber pipe is detected; during the process of desterilizing, the oil pipe is lifted, the anchoring mechanism keeps unmovable, the central pipe is lifted upward along with a pipe column, an desterilizing shear nail is sheared off, to release the desterilizing locking block, the upper cone body is pulled upward, the slip is separated from the sleeve pipe, and the packer is completely desterilized.
Description
Technical field
The utility model relates to a kind of fluid pressure type from testing the envelope anchor packer, can realize packer setting in oil-water well measure construction, test front cover and finish, and belongs to the wellbore tool that uses in the oil development process.
Technical background
At present, the domestic bidirectionally anchoring fluid pressure type packers that in oil-water well measure construction, use more, this kind packer does not have from testing sealing mechanism, when packer setting, can not check the packing element sealing performance, testing envelope need suppress by the oil jacket annular space, variation of observation pressure or oil pipe return the regimen condition to be judged, causes the complexity in the work progress.
Summary of the invention
The purpose of this utility model is to provide a kind of fluid pressure type from testing the envelope anchor packer, solves in the past packer setting, tests envelope and can not once finish, and tests the problem of envelope difficulty.Fluid pressure type of the present utility model is from testing the envelope anchor packer, satisfy seal up from testing behind the fluid pressure type packer setting, the requirement of lower seal packing element, novel structure, on-the-spot easy to use.
The utility model adopts following technical scheme, being a kind of fluid pressure type is lowered to by top successively from top to bottom and separates sealing mechanism from testing the envelope anchor packer, set and test sealing mechanism, retaining mechanism, the anti-bindiny mechanism of turning round in pressure transmission anchor mechanism and bottom constitutes, include top connection, central tube, exterior central tube, lower contact and be installed in central tube respectively, piston between exterior central tube outer wall or central tube and the exterior central tube, lock dog, pin, the packing element group, spacer ring, slips and cylinder sleeve, it is characterized in that the top connection bottom connects central tube, top connection and top are lowered to separates sealing mechanism and links to each other, top is lowered to separates the sealing mechanism bottom and is screwed on the outer wall of exterior central tube, it is outside also with the locking of central tube lock dog that exterior central tube is enclosed within central tube, exterior central tube extends downward the position of the short cover of anti-rotation in the connecting cylinder, and lower contact is sealedly connected on the central tube bottom.
Fluid pressure type of the present utility model is from testing the envelope anchor packer, its top is lowered to separates sealing mechanism and is made of deblocking urceolus, deblocking shear pin, dummy cylinder, dummy piston, the deblocking urceolus is fixed on the outer wall by the deblocking shear pin, between outer tube bottom of deblocking and the top connection root dummy cylinder is installed, in the belt cavity between the central tube that dummy cylinder and top connection bottom join dummy piston is housed, the dummy piston bottom is equipped with glue tube base, and last glue tube base bottom will be gone up glue tube base with screw and is fixed on the exterior central tube.
Fluid pressure type is tested sealing mechanism from testing setting of anchor packer of envelope, being connected top is lowered to and separates the sealing mechanism bottom, from top to bottom successively by last packing element group, test envelope member and lower rubber cylinder group and constitute, it is sleeved on the outer wall of exterior central tube, test the envelope member by test big envelope, test the envelope piston constitute, test the welding of envelope piston and exterior central tube, test to have on the big envelope and test the big envelope pressure transmission hole, central tube pressure transmission hole over testing on the exterior central tube of testing the covering of envelope piston of envelope member.
Its upper and lower two groups of packing elements all adopt three segments combined packing elements, between every section packing element spacer ring are housed, packing element in the middle of packing element group two ends packing element hardness is higher than, and the packing element at every group of packing element two ends all vulcanizes umbrella.
Fluid pressure type is installed in from the retaining mechanism of testing the envelope anchor packer and sets on the exterior central tube outer wall of testing the sealing mechanism bottom, constitutes locking main body and exterior central tube socket by lower rubber cylinder seat, lock ring, limit lock overcoat and locking main body; Lower rubber cylinder seat and lock ring socket and with the screwed connection of limit lock overcoat after with the socket of locking main body
Fluid pressure type is installed on the exterior central tube outer wall of retaining mechanism from the pressure transmission anchor mechanism of testing the envelope anchor packer, be made of control piston, trivial of central tube, shear pin, trivial of piston, descending piston, upper cone, slips tube, slips, reed, lower cone and lock ring, exterior central tube is connected with the central tube cover and locks with the central tube lock dog; With the exterior central tube socket, be positioned exterior central tube step right side and use the locking of piston lock dog after descending piston and the upper cone screwed connection; Control piston and exterior central tube, descending piston socket, and fix with setting shear pin; Slips, reed insert behind the slips tube with the exterior central tube socket and with the upper cone screwed connection; Lower cone and lock ring socket; Have the central tube pressure transmission hole on the center tube wall of the exterior central tube inside that this external control piston covers.
From the central tube position that the central tube pressure transmission hole is covered by top packing element group to its top, leave the gap between central tube outer wall and exterior central tube inwall.
Fluid pressure type is prevented turning round bindiny mechanism from the bottom of testing the envelope anchor packer, and it is installed in the bottom of pressure transmission anchor mechanism, is made of connecting cylinder and exterior central tube socket, short cover of anti-rotation and central tube screwed connection connecting cylinder, anti-rotation pipe nipple, deblocking lock dog and lower contact; Deblock is packaged in the lock dog groove of the short cover of anti-rotation; Lower contact and central tube screwed connection.
The course of work of the present utility model is as follows, at first will be equipped with under the tubing string of the present utility model after designated depth, in oil pipe, pressurize, highly pressurised liquid passes to pressure on control piston, the descending piston through the pressure transmission hole of central tube, cuts off in the highly pressurised liquid effect and sets shear pin, and descending descent of piston struts and be anchored on slips on the sleeve pipe, the control piston lock dog is released simultaneously, it is up that this moment, hydraulic coupling promoted control piston, and compression is two groups of packing elements up and down, the packing oil casing annular space.Meanwhile, the retaining mechanism lock ring of this packer is locked with the triangular tooth-shaped lock tooth on the locking main body, prevents the packer accessory resilience.
After packer setting is finished, continue to improve tubing pressure, highly pressurised liquid through central tube pressure transmission hole, exterior central tube pressure transmission hole, test the big envelope pressure transmission hole and enter after sleeve pipe, urceolus and the compression-expansion in the formed sealing ring cavity of packing element the sealing performance of check packing element.
When needing deblocking, only need to carry oil pipe, anchor mechanism is motionless, and central tube is up with tubing string, and the deblocking shear pin is cut off, and discharges the deblocking lock dog, and is up again, on pull out upper cone, slips breaks away from sleeve pipe, the complete deblocking of packer.
Description of drawings
Fig. 1, fluid pressure type seals the anchor packer structural representation from testing,
Among Fig. 1, top connection 1; deblocking urceolus 2; deblocking shear pin 3; dummy cylinder 4; dummy piston 5; central tube 6; last glue tube base 7; exterior central tube 8; last packing element group 9; spacer ring 10; test big envelope 11; test envelope piston 12; lower rubber cylinder group 13; lower rubber cylinder seat 14; lock ring 15; limit lock overcoat 16; locking main body 17; control piston 18; central tube lock dog 19; shear pin 20; piston lock dog 21; descending piston 22; upper cone 23; slips tube 24; slips 25; reed 26; lower cone 27; lock ring 28; connecting cylinder 29; the short cover 30 of anti-rotation; deblocking lock dog 31; lower contact 32; central tube pressure transmission hole 33; test big envelope pressure transmission hole 34; exterior central tube pressure transmission hole 35; umbrella 36.
The specific embodiment
Below in conjunction with drawings and Examples, structure of the present utility model is further specified, fluid pressure type of the present utility model is lowered to by top successively from top to bottom and separates sealing mechanism from testing the envelope anchor packer, set and test sealing mechanism, retaining mechanism, the anti-bindiny mechanism of turning round in pressure transmission anchor mechanism and bottom constitutes, include top connection 1, central tube 6, exterior central tube 8, lower contact 32 and be installed in central tube, piston between exterior central tube outer wall or central tube and the exterior central tube, lock dog, pin, the packing element group, spacer ring, member such as slips and cylinder sleeve, it is characterized in that top connection 1 bottom connects central tube 6, top connection 1 and top are lowered to separates sealing mechanism and links to each other, top is lowered to separates the sealing mechanism bottom and is screwed on the outer wall of exterior central tube, it is outside also with 19 lockings of central tube lock dog that exterior central tube is enclosed within central tube, exterior central tube 8 is lowered to from top separates the position that the sealing mechanism bottom extends downward the short cover 30 of anti-rotation in the connecting cylinder 29, and lower contact 32 is sealedly connected on central tube 6 bottoms.
Fluid pressure type of the present utility model is from testing the envelope anchor packer, its top is lowered to separates sealing mechanism and is made of deblocking urceolus 2, deblocking shear pin 3, dummy cylinder 4, dummy piston 5, deblocking urceolus 2 is fixed on the outer wall of top connection 1 by deblocking shear pin 3, between deblocking urceolus 2 bottoms and top connection 1 root dummy cylinder 4 is installed, in the belt cavity between the central tube that dummy cylinder 4 and top connection 1 bottom join dummy piston 5 is housed, dummy piston 5 bottoms are equipped with glue tube base 7, and last glue tube base 7 bottoms will be gone up glue tube base 7 with screw and are fixed on the exterior central tube 6.
Fluid pressure type is tested sealing mechanism from testing setting of anchor packer of envelope, being connected top is lowered to and separates the sealing mechanism bottom, from top to bottom successively by last packing element group 9, test envelope member and lower rubber cylinder group 13 and constitute, it is sleeved on the outer wall of exterior central tube 8, test the envelope member by test big envelope 11, test the envelope piston 12 constitute, test and seal piston 12 and exterior central tube 8 welding, test to have on the big envelope and test big envelope pressure transmission hole 34, central tube pressure transmission hole 35 over testing on the exterior central tube of testing the covering of envelope piston of envelope member.
Two groups of packing elements all adopt three segments combined packing elements about it, and spacer ring 10 is housed between every section packing element, packing element in the middle of packing element group two ends packing element hardness is higher than, and the packing element at every group of packing element two ends all vulcanizes umbrella 36.
Retaining mechanism is installed in and sets on the exterior central tube outer wall of testing the sealing mechanism bottom, is made of locking main body 17 and exterior central tube 8 sockets lower rubber cylinder seat 14, lock ring 15, limit lock overcoat 16 and locking main body 17; Lower rubber cylinder seat 14 and lock ring 15 sockets and with 16 screwed connections of limit lock overcoat after with 17 sockets of locking main body.
Fluid pressure type is made of control piston 18, trivial 19 of central tube, shear pin 20, trivial 21 in piston, descending piston 22, upper cone 23, slips tube 24, slips 25, reed 26, lower cone 27 and lock ring 28 from the pressure transmission anchor mechanism of testing the envelope anchor packer, central tube lock dog 19 locking exterior central tube and central tubes; With exterior central tube 8 sockets, be positioned exterior central tube 8 step right sides and use 21 lockings of piston lock dog after descending piston 22 and upper cone 23 screwed connections; Control piston 18 and exterior central tube 8,22 sockets of descending piston, and fixing with setting shear pin 20; Slips 25, reed 26 inserts in slips tube 24 backs and exterior central tube 8 sockets and with upper cone 23 screwed connections; Lower cone 27 and lock ring 28 sockets; Have central tube pressure transmission hole 33 near this external control piston 18 the center tube wall.
From the central tube position that central tube pressure transmission hole 33 is covered by top packing element group to its top, leave the gap between central tube 6 outer walls and exterior central tube 8 inwalls.
The bottom is anti-turns round bindiny mechanism, is made of connecting cylinder 29 and exterior central tube 8 sockets, short cover 30 of anti-rotation and central tube 6 screwed connections connecting cylinder 29, anti-rotation pipe nipple 30, deblocking lock dog 31 and lower contact 32; Deblocking lock dog 31 is loaded in the lock dog groove of the short cover 30 of anti-rotation; Lower contact 32 and central tube screwed connection.
The fluid pressure type self-test sealing packer has been realized setting in the process, has been tested front cover and finished function through field trial in construction, satisfy the requirement of oil well production.
Claims (8)
1. a fluid pressure type is lowered to by top successively from top to bottom and separates sealing mechanism from testing the envelope anchor packer, set and test sealing mechanism, retaining mechanism, the anti-bindiny mechanism of turning round in pressure transmission anchor mechanism and bottom constitutes, include top connection (1), central tube (6), exterior central tube (8), lower contact (32) and be installed in central tube, piston between exterior central tube outer wall or central tube and the exterior central tube, lock dog, pin, the packing element group, spacer ring, member such as slips and cylinder sleeve, it is characterized in that top connection (1) bottom connects central tube (6), top connection (1) and top are lowered to separates sealing mechanism and links to each other, top is lowered to separates the sealing mechanism bottom and is screwed on the outer wall of exterior central tube (8), it is outside also with central tube lock dog (19) locking that exterior central tube (8) is sleeved on central tube (6), exterior central tube (8) is lowered to from top separates the position that the sealing mechanism bottom extends downward the short cover of anti-rotation (30) in the connecting cylinder (29), and lower contact (32) is sealedly connected on central tube (6) bottom.
2. fluid pressure type as claimed in claim 1 is from testing the envelope anchor packer, it is characterized in that top is lowered to separates sealing mechanism by deblocking urceolus (2), deblocking shear pin (3), dummy cylinder (4), dummy piston (5) constitutes, deblocking urceolus (2) is fixed on the outer wall of top connection (1) by deblocking shear pin (3), between deblocking urceolus (2) bottom and top connection (1) root dummy cylinder (4) is installed, belt cavity between the central tube that dummy cylinder (4) and top connection (1) bottom join is being equipped with dummy piston (5), dummy piston (5) bottom is equipped with glue tube base (7), and last glue tube base (7) bottom will be gone up glue tube base (7) with screw and is fixed on the exterior central tube (6).
3. fluid pressure type as claimed in claim 1 is from testing the envelope anchor packer, it is characterized in that setting and test sealing mechanism, from top to bottom successively by last packing element group (9), test envelope member and lower rubber cylinder group (13) and constitute, it is sleeved on the outer wall of exterior central tube (8), test the envelope member by testing big envelope (11), testing envelope piston (12) formation, test envelope piston (12) and exterior central tube (8) welding, test to have on the big envelope and test big envelope pressure transmission hole (34), have exterior central tube pressure transmission hole (35) testing testing on the exterior central tube that the envelope piston covers of envelope member.
4. fluid pressure type as claimed in claim 1 is from testing the envelope anchor packer; it is characterized in that the packing element group adopts three segments combined packing elements; spacer ring (10) is housed between every section packing element, packing element in the middle of packing element group two ends packing element hardness is higher than, the packing element at every group of packing element two ends all vulcanizes umbrella (36).
5. fluid pressure type as claimed in claim 1 is from testing the envelope anchor packer, it is characterized in that retaining mechanism is made of lower rubber cylinder seat (14), lock ring (15), limit lock overcoat (16) and locking main body (17), locking main body (17) and exterior central tube (8) socket, lower rubber cylinder seat (14) and lock ring (15) socket and with the screwed connection of limit lock overcoat (16) after with the socket of locking main body (17).
6. fluid pressure type as claimed in claim 1 is from testing the envelope anchor packer, it is characterized in that the pressure transmission anchor mechanism is by control piston (18), trivial of central tube (19), shear pin (20), trivial of piston (21), descending piston (22), upper cone (23), slips tube (24), slips (25), reed (26), lower cone (27) and lock ring (28) constitute, central tube lock dog (19) locking exterior central tube and central tube, after descending piston (22) and upper cone (23) screwed connection with exterior central tube (8) socket, be positioned exterior central tube (8) step right side and use piston lock dog (21) locking, control piston (18) and exterior central tube (8), descending piston (22) socket, and it is fixing with setting shear pin 20, slips (25), reed (26) insert in slips tube (24) back and exterior central tube (8) socket and with upper cone (23) screwed connection, lower cone (27) and lock ring (28) socket; Have central tube pressure transmission hole (33) near this external control piston (18) the center tube wall.
7. fluid pressure type as claimed in claim 1 is characterized in that leaving the gap between central tube (6) outer wall and exterior central tube (8) inwall from testing the envelope anchor packer.
8. fluid pressure type as claimed in claim 1 is from testing the envelope anchor packer, it is characterized in that the anti-bindiny mechanism of turning round in bottom, constitute by connecting cylinder (29), anti-rotation pipe nipple (30), deblocking lock dog (31) and lower contact (32), connecting cylinder (29) and exterior central tube (8) socket, short cover of anti-rotation (30) and central tube (6) screwed connection, deblocking lock dog (31) is loaded in the lock dog groove of the short cover of anti-rotation (30), lower contact (32) and central tube (6) screwed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201517788U CN201057016Y (en) | 2007-06-26 | 2007-06-26 | Hydraulic self-sealing slip packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201517788U CN201057016Y (en) | 2007-06-26 | 2007-06-26 | Hydraulic self-sealing slip packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201057016Y true CN201057016Y (en) | 2008-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201517788U Expired - Lifetime CN201057016Y (en) | 2007-06-26 | 2007-06-26 | Hydraulic self-sealing slip packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201057016Y (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733777A (en) * | 2012-06-11 | 2012-10-17 | 新疆华油油气工程有限公司 | Hydraulic setting/unsetting high-pressure packer |
| CN102900394A (en) * | 2011-07-25 | 2013-01-30 | 中国石油天然气集团公司 | Packer capable of washing well and examining seal |
| CN103216210A (en) * | 2012-11-20 | 2013-07-24 | 中国海洋石油总公司 | Top packer used for preventing sand |
| CN104047563A (en) * | 2014-06-28 | 2014-09-17 | 新疆华油油气工程有限公司 | Pressing-down de-locking packer for hydraulic setting |
| CN104120998A (en) * | 2014-07-04 | 2014-10-29 | 中国石油天然气股份有限公司 | Suspension packer for gas well layered exploitation |
| CN104389546A (en) * | 2014-11-26 | 2015-03-04 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Compressed packer rubber barrel with spacer ring combined spring shoulder pad |
| CN104975820A (en) * | 2015-06-25 | 2015-10-14 | 荆州市赛瑞能源技术有限公司 | Self-seal-examining slip packer |
| CN106089147A (en) * | 2016-08-29 | 2016-11-09 | 盐城市畅海精密机械有限公司 | Scalable sets force value fracturing packer |
| CN109577906A (en) * | 2017-09-29 | 2019-04-05 | 中国石油天然气股份有限公司 | Packer |
| CN109798087A (en) * | 2019-03-13 | 2019-05-24 | 荆州市赛瑞能源技术有限公司 | A kind of retrievable hanging packer of double packing elements |
| CN110331957A (en) * | 2019-08-06 | 2019-10-15 | 宝鸡瑞林石油机电设备有限责任公司 | A kind of repeatedly setting expansion type fracture packer |
| CN110887641A (en) * | 2018-08-15 | 2020-03-17 | 中国石油化工股份有限公司 | Portable packer auxiliary unsealing device and using method |
| CN111894510A (en) * | 2020-08-18 | 2020-11-06 | 西南石油大学 | Combined rubber-cylinder type two-stage ultrahigh pressure sealing packer |
| CN112943183A (en) * | 2021-01-12 | 2021-06-11 | 中国石油天然气股份有限公司 | Layered gas injection process pipe column and using method thereof |
| CN113417595A (en) * | 2021-07-13 | 2021-09-21 | 中国石油化工股份有限公司 | Anchoring packer and using method thereof |
-
2007
- 2007-06-26 CN CNU2007201517788U patent/CN201057016Y/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900394A (en) * | 2011-07-25 | 2013-01-30 | 中国石油天然气集团公司 | Packer capable of washing well and examining seal |
| CN102733777B (en) * | 2012-06-11 | 2016-02-24 | 新疆华油油气工程有限公司 | The high-pressure packer of a kind of hydraulic setting, deblocking |
| CN102733777A (en) * | 2012-06-11 | 2012-10-17 | 新疆华油油气工程有限公司 | Hydraulic setting/unsetting high-pressure packer |
| CN103216210A (en) * | 2012-11-20 | 2013-07-24 | 中国海洋石油总公司 | Top packer used for preventing sand |
| CN103216210B (en) * | 2012-11-20 | 2015-09-23 | 中国海洋石油总公司 | Sand control top packer |
| CN104047563A (en) * | 2014-06-28 | 2014-09-17 | 新疆华油油气工程有限公司 | Pressing-down de-locking packer for hydraulic setting |
| CN104120998A (en) * | 2014-07-04 | 2014-10-29 | 中国石油天然气股份有限公司 | Suspension packer for gas well layered exploitation |
| CN104389546A (en) * | 2014-11-26 | 2015-03-04 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Compressed packer rubber barrel with spacer ring combined spring shoulder pad |
| CN104975820B (en) * | 2015-06-25 | 2017-07-11 | 荆州市赛瑞能源技术有限公司 | It is a kind of to test envelope anchor packer certainly |
| CN104975820A (en) * | 2015-06-25 | 2015-10-14 | 荆州市赛瑞能源技术有限公司 | Self-seal-examining slip packer |
| CN106089147A (en) * | 2016-08-29 | 2016-11-09 | 盐城市畅海精密机械有限公司 | Scalable sets force value fracturing packer |
| CN106089147B (en) * | 2016-08-29 | 2018-05-15 | 盐城市畅海精密机械有限公司 | It is adjustable to set force value fracturing packer |
| CN109577906B (en) * | 2017-09-29 | 2021-07-02 | 中国石油天然气股份有限公司 | Packer (CN) |
| CN109577906A (en) * | 2017-09-29 | 2019-04-05 | 中国石油天然气股份有限公司 | Packer |
| CN110887641A (en) * | 2018-08-15 | 2020-03-17 | 中国石油化工股份有限公司 | Portable packer auxiliary unsealing device and using method |
| CN110887641B (en) * | 2018-08-15 | 2022-05-10 | 中国石油化工股份有限公司 | Portable packer auxiliary unsealing device and using method |
| CN109798087A (en) * | 2019-03-13 | 2019-05-24 | 荆州市赛瑞能源技术有限公司 | A kind of retrievable hanging packer of double packing elements |
| CN109798087B (en) * | 2019-03-13 | 2021-07-16 | 荆州市赛瑞能源技术有限公司 | Removable suspension packer with double rubber cylinders |
| CN110331957A (en) * | 2019-08-06 | 2019-10-15 | 宝鸡瑞林石油机电设备有限责任公司 | A kind of repeatedly setting expansion type fracture packer |
| CN111894510A (en) * | 2020-08-18 | 2020-11-06 | 西南石油大学 | Combined rubber-cylinder type two-stage ultrahigh pressure sealing packer |
| CN112943183A (en) * | 2021-01-12 | 2021-06-11 | 中国石油天然气股份有限公司 | Layered gas injection process pipe column and using method thereof |
| CN113417595A (en) * | 2021-07-13 | 2021-09-21 | 中国石油化工股份有限公司 | Anchoring packer and using method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080507 |
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| CX01 | Expiry of patent term |