CN108487879A - A kind of oil layer protection flushing packer - Google Patents
A kind of oil layer protection flushing packer Download PDFInfo
- Publication number
- CN108487879A CN108487879A CN201711386101.7A CN201711386101A CN108487879A CN 108487879 A CN108487879 A CN 108487879A CN 201711386101 A CN201711386101 A CN 201711386101A CN 108487879 A CN108487879 A CN 108487879A
- Authority
- CN
- China
- Prior art keywords
- top connection
- central tube
- sealing
- oil layer
- closed
- 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
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 239000002775 capsule Substances 0.000 claims abstract description 18
- 238000004873 anchoring Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 239000003129 oil well Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 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
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1295—Packers; Plugs with mechanical slips for hooking into the casing actuated by fluid pressure
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)
- Piles And Underground Anchors (AREA)
Abstract
A kind of oil layer protection flushing packer; including central tube, top connection, lower contact, control set, sliding sleeve, closed set, airtight valve, sealing joint, capsule, anchoring structure, connector; central tube threaded upper ends connect top connection; lower end is socketed lower contact; and it keeps sealing by sealing ring; control is socketed in outside top connection, is kept fixed by discharging shear pin, and keeps sealing by sealing ring and top connection；Connector is threadedly coupled with lower contact, and closed set upper side is connect with control set lower thread, and lower end is threadedly coupled with sealing joint；Sliding sleeve is socketed on outside central tube, and is sheathed in closed set, and top connection lower part is located at, controlling shear pin passes through top connection to be inserted into sliding sleeve, the sealing joint other end is connect with anchor mechanism, and the anchor mechanism other end is connect with connector, and capsule is arranged between anchor mechanism and central tube.It is good, safe and reliable that the present invention has the advantages that be anchored performance, can effectively improve the service life of separate layer water injection string.
Description
Technical field
The present invention relates to oil exploitation laminated distributor under well water injection string flushing packer, specifically a kind of oil layer protection is anti-
Wriggling flushing packer.
Background technology
During oil field rod pumping pump is pumped, it is dirty by sand, clast etc. to be frequently encountered tubing wax or oil well pump
Object blocks, and prevents oil well pump from normally producing, the mode of generally use well-flushing is to restore its production.Pumping and washing process be well-flushing water from
Casing is squeezed into oil pipe and is returned out, forms circulation well cleanup channel, oil well is cleaned up.But some oil wells are since oil reservoir is missed, well-flushing
Water enters oil reservoir after being squeezed into from casing, is not returned out out of oil pipe, the purpose of well-flushing is not achieved, well-flushing water, which enters oil reservoir, can also make oil
Layer pollution, reduces oil well output, or even kill oil reservoir, keeps oil well not fuel-displaced, generates heavy economic losses.It is asked to solve this
Topic protects oil reservoir, and oil field has developed flushing packer, oil reservoir is separated well-flushing.Lift from the top and put down deblocking hydraulic compression formula packer
It is the current common packer of separated-zone water infection oil field tubing string, but in the injecting process, setting packing element is by well temperature and pressure
The influence of effect, when water injection well working condition changes, packing element is wriggled under pressure effect or temperature effect effect, seriously
The sealing effect for affecting packer shortens its service life, or even causes packing element tearing that tubing string is caused to fail.
Invention content
The purpose of the present invention is to provide a kind of oil layer protection flushing packers, can improve the anticreep property of packer
Can, have the advantages that be anchored performance it is good, securely and reliably, the service life of layered water injection pipe can be effectively improved.
The purpose of the present invention is achieved by the following technical programs：
The present invention provides a kind of oil layer protection flushing packer, including central tube, top connection, lower contact, control set, cunning
Set, closed set, airtight valve, sealing joint, capsule, anchoring structure, connector, central tube threaded upper ends connect top connection, lower end
It is socketed lower contact, and keeps sealing by sealing ring, control is socketed in outside top connection, is kept fixed by discharging shear pin,
And it keeps sealing by sealing ring and top connection；Connector is threadedly coupled with lower contact, closed set upper side and control set lower end spiral shell
Line connects, and lower end is threadedly coupled with sealing joint；Sliding sleeve is socketed on outside central tube, and is sheathed in closed set, and top connection is located at
Lower part, control shear pin pass through top connection to be inserted into sliding sleeve, and the sealing joint other end is connect with anchor mechanism, the anchor mechanism other end
It is connect with connector, capsule is arranged between anchor mechanism and central tube, and keeps being in fluid communication with the airtight valve of sliding sleeve lower end.
Described capsule one end is threadedly coupled with sealing joint, and the other end is threadedly coupled with the baffle ring in lower contact, and under
Connector is sealed by sealing ring.
There is closing piece in the top connection, have in the sliding sleeve lower position adjacent with closing piece it is corresponding coordinate with closing piece it is recessed
Slot.
Further, also there is snap ring, the snap ring is connected in the skewed slot between sliding sleeve and closed set, snap ring it is transversal
Face is wedge shape.
The airtight valve includes pressing plate, ball seat, closed valve ball, closed spring and closed valve seat, and described pressing plate one end passes through
Trip bolt is fixed on sliding sleeve, and the other end is connected on ball seat, and the pressing plate center is equipped with mandril, and the ball seat is located at closed
In valve seat, one end is blocked by mandril, and the other end is blocked by valve ball, and the valve ball is located in the channel of closed valve seat, passes through spring
It is connect with closed valve seat.
There are gap, the corresponding center tube wall in gap to be equipped with entering pressure hole between the central tube and pressing plate.
The anchor mechanism is slip mechanism, and the slip mechanism includes backplate, slips, flat spring, slip sleeve, slip sleeve
Upper end is threadedly coupled with sealing joint, and lower end is threadedly coupled with connector, and the opening in slip sleeve is arranged in slips, is located at backplate
Groove in, and be uniformly arranged along the periphery of slip sleeve, flat spring is connected on the outside of slips, and backplate is elastomer, and upper end is supported
It is connected on sealing joint one end, lower end is connected to connector one end.
One end that the sealing joint and connector are abutted against with backplate is wedge shape, and the capsule setting is in backplate in
Between heart pipe.
The beneficial effects of the invention are as follows：The oil layer protection flushing packer of the present invention is according to offshore oilfield seperated layer water injection
The anticreep tool of tubing string of feature design starts in packer setting or water filling and is anchored and locks, and is allowed in permanent anchoring
State, it is good, safe and reliable to have the advantages that be anchored performance, can effectively improve the service life of separate layer water injection string.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of oil layer protection flushing packer of the present invention.
In figure：1- top connections；2- sealing rings；3- discharges shear pin；4- sealing rings；5- control sets；6- controls shear pin；7- locks
Block；The locking nails of 8-；The closed sets of 9-；10- snap rings；11- sliding sleeves；12- sealing rings；13- sealing rings；14- trip bolts；15- pressing plates；
16- mandrils；17- sealing rings；18- ball seats；The closed valve balls of 19-；The closed springs of 20-；21- seal valve seats；22- sealing rings；23- is close
Seal；24- sealing joints；25- capsules；26- backplates；27- slip sleeves；28- slips；29- flat springs；30- central tubes；31- connects
Connector；32- baffle rings；33- lower contacts.
Specific implementation mode
The embodiment of the present invention is illustrated below in conjunction with the accompanying drawings.
According to Fig. 1, oil layer protection flushing packer of the invention includes central tube 30, top connection 1, lower contact 31, control
Set 5, sliding sleeve 11, closed set 9, airtight valve, sealing joint 34, capsule 25, anchoring structure, connector 31,30 upper end spiral shell of central tube
Line connects top connection 1, and lower end is socketed lower contact 33, and keeps sealing by sealing ring, and control set 5 is socketed in outside top connection 1,
It is kept fixed by discharging shear pin 3, and keeps sealing by sealing ring 2 and top connection 1；Connector 31 connects with 33 screw thread of lower contact
It connects, 9 upper ends of closed set are connect with control 5 lower threads of set, and lower end is threadedly coupled with sealing joint 24；24 other end of sealing joint
Connect with anchor mechanism, the anchor mechanism other end is connect with connector 31, the setting of capsule 25 anchor mechanism and central tube 30 it
Between；25 one end of capsule is threadedly coupled with sealing joint 24, and is connect with the vented liquid in airtight valve, in the other end and lower contact
Baffle ring 32 be threadedly coupled, and sealed by sealing ring with lower contact 33.Sliding sleeve 11 is socketed on outside central tube 30, and is sheathed on close
It closing in set 9, is located at 1 lower part of top connection, control shear pin 6 passes through top connection 1 to be inserted into sliding sleeve 11, has closing piece 7 in top connection 1,
There is the corresponding groove coordinated with closing piece 7 in the lower position adjacent with closing piece of sliding sleeve 11.Snap ring 10 is connected to sliding sleeve 11 and close
It closes in the skewed slot between set 9, the cross section of snap ring 10 is wedge shape.
Institute's airtight valve includes pressing plate 15, ball seat 18, closed valve ball 19, closed spring 20 and closed valve seat 21, pressing plate 15 1
End is fixed on by trip bolt 14 on sliding sleeve 11, and the other end is connected on ball seat 18, and 15 center of pressing plate is equipped with mandril 16, ball seat
18 are located in closed valve seat 21, and one end is blocked by mandril 16, and the other end is blocked by valve ball 19, and valve ball 19 is located at closed valve seat 21
It in channel, is connect with closed valve seat 21 by spring 20, there is gap, the corresponding central tube in gap between central tube 30 and pressing plate 15
30 walls are equipped with entering pressure hole.
The anchor mechanism is slip mechanism, including backplate 26, slips 28, flat spring 29, slip sleeve 27, on slip sleeve 27
End is threadedly coupled with sealing joint 24, and lower end is threadedly coupled with connector 31, and the opening in slip sleeve 27, position is arranged in slips 28
It in the groove of backplate 26, and is uniformly arranged along the periphery of slip sleeve 27, flat spring 29 is connected to 28 outside of slips, backplate 26
For elastomer, upper end is connected to 24 one end of sealing joint, and lower end is connected to 31 one end of connector, sealing joint 24 and connector 31
The one end abutted against with backplate 26 is wedge shape, and capsule 25 is arranged between backplate 26 and central tube 30.
The packer application method of the present invention is as follows：
1, it goes into the well；Tubing string is prepared according to technological design, down toward design position.
2, anchoring starts；At packer setting (or directly carrying out water filling), starts high-pressure pump and suppressed, oil pipe hydraulic pressure
It is injected through central tube entering pressure hole, hydraulic drive sliding sleeve moves up, and control shear pin is made to cut, and sliding sleeve moves up until closing piece is caught in sliding sleeve
In corresponding slot, top plate is moved up with sliding sleeve, exposes valve base channel, hydraulic pressure is made to enter airtight valve compressed spring, into capsule inner cavity,
Expansion capsule simultaneously makes slips open, and is anchored to internal surface of sleeve pipe to be anchored water injection string, when glue intraluminal pressure increases to predetermined value,
Closed valve ball one-way sealing locking is tight, and oil layer protection flushing packer is made to be in permanent anchoring states.
3, anchoring is released；When needing lift pipe string, direct upper lifting pipe post, top connection drives central tube to move upwards, and discharges
Shear pin is cut, and central tube lower end moves up, and so that the pressure release of capsule inner cavity, slips is retracted, oil layer protection flushing packer can release anchor
It is fixed, smoothly act down-hole string.
Claims (9)
1. a kind of oil layer protection flushing packer, including central tube (30), top connection (1), lower contact (31), control set (5), cunning
Cover (11), closed set (9), airtight valve, sealing joint (34), capsule (25), anchoring structure, connector (31), central tube (30)
Threaded upper ends connect top connection (1), and lower end is socketed lower contact (33), and keeps sealing by sealing ring, and control set (5) is socketed in
Top connection (1) is external, is kept fixed by discharging shear pin (3), and keeps sealing by sealing ring (2) and top connection (1)；Connection
Head (31) is threadedly coupled with lower contact (33), and closed set (9) upper end is connect with control set (5) lower thread, and lower end connects with closed
Head (24) is threadedly coupled；Sliding sleeve (11) is socketed on central tube (30) outside, and is sheathed in closed set (9), is located under top connection (1)
Portion, control shear pin (6) pass through top connection (1) to be inserted into sliding sleeve (11), and sealing joint (24) other end is connect with anchor mechanism, anchor
Determine the mechanism other end to connect with connector (31), capsule (25) is arranged between anchor mechanism and central tube (30), and and sliding sleeve
(11) airtight valve of lower end keeps being in fluid communication.
2. oil layer protection flushing packer according to claim 1, it is characterised in that：Described capsule (25) one end and sealing joint
(24) it is threadedly coupled, the other end is threadedly coupled with the baffle ring (32) in lower contact, and is sealed by sealing ring with lower contact (33).
3. oil layer protection flushing packer according to claim 1, it is characterised in that：There is closing piece in the top connection (1)
(7), there is the corresponding groove coordinated with closing piece (7) in sliding sleeve (11) lower position adjacent with closing piece.
4. oil layer protection flushing packer according to claim 1, it is characterised in that：Also there is snap ring (10), the snap ring
(10) it is connected in the skewed slot between sliding sleeve (11) and closed set (9), the cross section of snap ring (10) is wedge shape.
5. oil layer protection flushing packer according to claim 1, it is characterised in that：The airtight valve includes pressing plate (15), ball
Seat (18), closed valve ball (19), closed spring (20) and closed valve seat (21), described pressing plate (15) one end pass through trip bolt
(14) it is fixed on sliding sleeve (11), the other end is connected on ball seat (18), and pressing plate (15) center is equipped with mandril (16), described
Ball seat (18) is located in closed valve seat (21), and one end is blocked by mandril (16), and the other end is blocked by valve ball (19), the valve ball
(19) it is located in the channel of closed valve seat (21), is connect with closed valve seat (21) by spring (20).
6. oil layer protection flushing packer according to claim 1, it is characterised in that：The central tube (30) and pressing plate (15) it
Between have a gap, gap corresponding central tube (30) wall is equipped with entering pressure hole.
7. oil layer protection flushing packer according to claim 1, it is characterised in that：The anchor mechanism is slip mechanism.
8. oil layer protection flushing packer according to claim 7, it is characterised in that：The slip mechanism include backplate (26),
Slips (28), flat spring (29), slip sleeve (27), slip sleeve (27) upper end are threadedly coupled with sealing joint (24), lower end and company
Connector (31) is threadedly coupled, and the opening in slip sleeve (27) is arranged in slips (28), is located in the groove of backplate (26), and along card
The periphery of watt set (27) is uniformly arranged, and flat spring (29) is connected on the outside of slips (28), and backplate (26) is elastomer, and upper end is supported
It is connected on sealing joint (24) one end, lower end is connected to connector (31) one end.
9. oil layer protection flushing packer according to claim 8, it is characterised in that：The sealing joint (24) and connector
(31) one end abutted against with backplate (26) is wedge shape, capsule (25) setting backplate (26) and central tube (30) it
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711386101.7A CN108487879A (en) | 2017-12-20 | 2017-12-20 | A kind of oil layer protection flushing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711386101.7A CN108487879A (en) | 2017-12-20 | 2017-12-20 | A kind of oil layer protection flushing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108487879A true CN108487879A (en) | 2018-09-04 |
Family
ID=63343954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711386101.7A Pending CN108487879A (en) | 2017-12-20 | 2017-12-20 | A kind of oil layer protection flushing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108487879A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339734A (en) * | 2018-10-23 | 2019-02-15 | 天津泊荣石油科技发展有限公司 | A kind of packer for annular space pipeline |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5462120A (en) * | 1993-01-04 | 1995-10-31 | S-Cal Research Corp. | Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes |
| CN2426521Y (en) * | 2000-03-15 | 2001-04-11 | 胜利石油管理局采油工艺研究院 | Anchoring type washable well packer |
| CN201212374Y (en) * | 2008-07-15 | 2009-03-25 | 于成龙 | Oil sleeve zonal injection packer |
| CN101392636A (en) * | 2008-10-29 | 2009-03-25 | 胡振明 | Sand prevention water injection packer |
| CN101737019A (en) * | 2009-12-02 | 2010-06-16 | 于海涛 | Release packer capable of well-flushing |
| CN104033126A (en) * | 2014-05-14 | 2014-09-10 | 天津市滨海新区龙新石油机械制造有限公司 | Self-locking sealed type washable well packer capable of expanding through hydraulic power |
| CN104790906A (en) * | 2015-04-09 | 2015-07-22 | 中国石油集团西部钻探工程有限公司 | Machinery hydraulic pressure dual-functional prestress well cementation device |
| CN105672934A (en) * | 2014-11-20 | 2016-06-15 | 中国石油化工股份有限公司 | Hydraulic-cylinder type enclosed anti-creep packer |
| CN206111118U (en) * | 2016-10-17 | 2017-04-19 | 中国石油化工股份有限公司 | Capsule type water conservancy anchor |
-
2017
- 2017-12-20 CN CN201711386101.7A patent/CN108487879A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5462120A (en) * | 1993-01-04 | 1995-10-31 | S-Cal Research Corp. | Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes |
| CN2426521Y (en) * | 2000-03-15 | 2001-04-11 | 胜利石油管理局采油工艺研究院 | Anchoring type washable well packer |
| CN201212374Y (en) * | 2008-07-15 | 2009-03-25 | 于成龙 | Oil sleeve zonal injection packer |
| CN101392636A (en) * | 2008-10-29 | 2009-03-25 | 胡振明 | Sand prevention water injection packer |
| CN101737019A (en) * | 2009-12-02 | 2010-06-16 | 于海涛 | Release packer capable of well-flushing |
| CN104033126A (en) * | 2014-05-14 | 2014-09-10 | 天津市滨海新区龙新石油机械制造有限公司 | Self-locking sealed type washable well packer capable of expanding through hydraulic power |
| CN105672934A (en) * | 2014-11-20 | 2016-06-15 | 中国石油化工股份有限公司 | Hydraulic-cylinder type enclosed anti-creep packer |
| CN104790906A (en) * | 2015-04-09 | 2015-07-22 | 中国石油集团西部钻探工程有限公司 | Machinery hydraulic pressure dual-functional prestress well cementation device |
| CN206111118U (en) * | 2016-10-17 | 2017-04-19 | 中国石油化工股份有限公司 | Capsule type water conservancy anchor |
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| Title |
|---|
| 张东亭, 黄大云: "用于高凝高粘及低渗透油田的可洗井分注管串", 钻采工艺, no. 03 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339734A (en) * | 2018-10-23 | 2019-02-15 | 天津泊荣石油科技发展有限公司 | A kind of packer for annular space pipeline |
| CN109339734B (en) * | 2018-10-23 | 2023-08-18 | 天津泊荣石油科技发展有限公司 | Packer for annular pipeline |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181018 Address after: 257231 No. 26 West Road, Gudao Town, Hekou District, Dongying, Shandong Applicant after: Dongying Changrui Petroleum Mechanical Fitting Co., Ltd. Address before: 257231 No. 26 West Road, Gudao Town, Hekou District, Dongying, Shandong Applicant before: Gao Yundong Applicant before: Liu Jiming |
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| TA01 | Transfer of patent application right |