CN106761538A - A kind of oil field is every using long packing element packer - Google Patents

A kind of oil field is every using long packing element packer Download PDF

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Publication number
CN106761538A
CN106761538A CN201611205038.8A CN201611205038A CN106761538A CN 106761538 A CN106761538 A CN 106761538A CN 201611205038 A CN201611205038 A CN 201611205038A CN 106761538 A CN106761538 A CN 106761538A
Authority
CN
China
Prior art keywords
packing element
packer
oil field
connector
central tube
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
Application number
CN201611205038.8A
Other languages
Chinese (zh)
Inventor
刘江波
王治国
梁万银
赵鹏玉
张安康
王昌龄
闫志强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN201611205038.8A priority Critical patent/CN106761538A/en
Publication of CN106761538A publication Critical patent/CN106761538A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/127Packers; Plugs with inflatable sleeve
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/126Packers; Plugs with fluid-pressure-operated elastic cup or skirt

Abstract

The invention discloses a kind of oil field every using long packing element packer,At least include central tube,The central tube upper end is connected with top connection,Lower end is connected with lower contact,It is socketed with adapter sleeve on central tube successively from top to bottom,Connector,Spring socket sleeve,Intermediate rubber cartridge module and slip cap,Connection set upper side is connected with top connection,Adapter sleeve lower end is connected with connector upper end,Connector lower end inner headed face is connected with piston switch,Connector lower end periphery is connected with spring socket sleeve upper end,Spring socket sleeve lower end is connected with intermediate rubber cartridge module upper end,Intermediate rubber cartridge module lower end is connected with slip cap,Positioning step is provided with lower contact,On positioning step ball seat is fixed with by unsealing shear pin,The packer is combined with oil field rod-type pumping unit DP technology,Can realize that one-trip string completes to set,Production,Deblocking salvaging is carried out by carrying tubing string simultaneously,And first apply every adopting inflatable packer,With longer effective packing face,Improve packing success rate.

Description

A kind of oil field is every using long packing element packer
Technical field
The present invention relates to a kind of oil extraction in oil field process unit, more particularly to caused by casing failure, corrosion failure oil reservoir with The oil well of water layer UNICOM is a kind of oil field every using long packing element packer specifically every the process unit adopted.
Background technology
With the continuity of oil field development time, down-hole casing breaks because set occur successively in the reasons such as corrosion, causes stratum with oil Layer UNICOM, have impact on oil field normally exploitation even pollution stratum water source welding, add up to surpass 20,000 muzzles to current petrochina Broken well.The technique more common for the broken well of set has casing patching, chemical plugging, secondary well cementation, packer every adopting, wherein insulating Device is every excavating technology is simple, convenient construction, low cost account for covering brokenly more than the 80% of well improvement.Currently used for every the packer master for adopting There are two kinds, one is traditional Y111, Y211, Y341 etc. conventional every packer is adopted, and its potted component is sat using compression Envelope compression travel is short, it is poor to compress smaller packing effect;Secondly be the long-life such as Y141, Y453, Y445 every packer is adopted, it is such Packer needs to enter to be set under supporting special setting tool is leading, then enters down after flow string band intubation is docked just Often production using specific purpose tool when rising, it is necessary to carry out brill mill, complicated construction technique, high cost.
The content of the invention
In view of the above-mentioned problems existing in the prior art, the present invention is devised and a kind of is applied to cased hole completion and reservoir top goes out Water and the reverse-filling of the run-down place's water outlet of sleeve pipe have longer effective every completion system is adopted compared with conventional Water-isolation oil production packer The oil field in packing face is every using long packing element packer.
The technical solution adopted in the present invention is as follows:
At least opened including top connection, central tube, adapter sleeve, connector, piston every long packing element packer is used in a kind of oil field Pass, spring socket sleeve, intermediate rubber cartridge module, slip cap, lower contact, shear pin, ball seat are set, the upper end of described central tube is connected with Top connection, the lower end of central tube is connected with lower contact, is socketed with adapter sleeve, connector, spring on central tube successively from top to bottom Cover for seat, intermediate rubber cartridge module and slip cap, the upper end of adapter sleeve are connected with top connection, outside the lower end and connector upper end of adapter sleeve Disc is connected, and connector lower end inner headed face is connected with piston switch, in the upper end of connector lower end periphery and spring socket sleeve Disc is connected, and the lower end of spring socket sleeve is connected with intermediate rubber cartridge module upper end, and the lower end of intermediate rubber cartridge module is connected with slip cap, Positioning step is provided with lower contact, ball seat is fixed with positioning step.
Described intermediate rubber cartridge module includes upper jacket, upper packing element fixed seat, sets packing element, lower jacket and lower rubber cylinder and fix Seat, the upper end of described upper jacket is threadedly coupled with spring socket sleeve, and the lower end of upper jacket is threadedly coupled with upper packing element fixed seat, on Vulcanization is fixed with and sets packing element between packing element fixed seat and lower rubber cylinder fixed seat, lower rubber cylinder fixed seat it is cylindrical upper with lower jacket End connection, the lower end of lower jacket is threadedly coupled with slip cap.
Steel belt framework is set with described sealing cylinder, the outer round surface vulcanization of described steel belt framework is fixed with length not Cartridge less than 1.5m.
Back-moving spring is clamped between described piston switch and spring socket sleeve.
Described adapter sleeve is connected with top connection by unsealing shear pin.
Interior groove is provided with described connector, O-ring is housed on interior groove.
The inside that vulcanization has Rubber cap-like outer cover for closure, piston switch on described piston switch is equipped with sealing ring.
It is connected through a screw thread between the upper end of described central tube and top connection, is led between the lower end of central tube and lower contact Cross threaded connection;Connector lower end periphery is connected through a screw thread with the upper end inner headed face of spring socket sleeve.
The interior circular groove of described slip cap is built with sealing ring.
Described ball seat is fixedly connected at the positioning step of lower contact by setting shear pin;Steel ball is provided with ball seat, The outer surface of ball seat is equipped with sealing ring.
Beneficial effects of the present invention:
Firstth, packer element involved in the present invention is set using expanding, is realizing one-trip string completion seat On the premise of envelope, production, with longer effective packing face (cartridge can be designed in more than 1.5m), packing greatly improved Success rate;
Secondth, packer inside without any position constraint there is longer compression travel can obtain larger compression ratio, foot To ensure that sealing unit fully sets, good sealing effect;
3rd, the packer controlled using piston switch locking (when tubing pressure be more than 5MPa when piston switch 8 open Open), the gas pressure relief slot control deblocking on central tube, it is internal without positioning hydraulic cavities, self-locking mechanism and solution sealing mechanism etc., realize it is electrodeless Design difficulty of processing is greatly reduced on the premise of differential self-locking, while ensure that packer bulk strength, the later stage is reduced Accident rate is salvaged in deblocking;
4th, the packer is supported and set without shaft bottom and do not influenceed by casing coupling, is capable of achieving any position in pit shaft That puts sets, unseals, pit shaft strong adaptability;
5th, the packer has been broken every the design routine for adopting class packer " sealing unit+slips " first, employs seat The packing element sealing surface (can reach more than 1m) for being honored as a queen long carries out grappling with sleeve friction power, and bit freezing is easily caused when eliminating deblocking The slips of risk, potential safety hazard is eliminated from design source, is significantly reduced deblocking and is salvaged risk.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Description of reference numerals:
1st, top connection;2nd, central tube;3rd, shear pin is unsealed;4th, adapter sleeve;5th, connector;6th, O-ring sealing;7th, gum cover;8、 Piston switch;9th, back-moving spring;10th, spring socket sleeve;11st, upper jacket;12nd, upper packing element fixed seat;13rd, packing element is set;14th, steel band Skeleton;15th, cartridge;16th, lower jacket;17th, lower rubber cylinder fixed seat;18th, slip cap;19th, sealing ring;20th, lower contact;21、 Steel ball;22nd, shear pin is set;23 ball seats.
Specific embodiment:
Embodiment 1:
As shown in figure 1, the invention provides a kind of oil field every long packing element packer is used, at least including top connection 1, center Pipe 2, adapter sleeve 4, connector 5, piston switch 8, spring socket sleeve 10, intermediate rubber cartridge module, slip cap 18, lower contact 20, set Shear pin 22, ball seat 23, the upper end of described central tube 2 are connected with top connection 1, and the lower end of central tube 2 is connected with lower contact 20, in It is socketed with adapter sleeve 4, connector 5, spring socket sleeve 10, intermediate rubber cartridge module and slip cap 18 on heart pipe 2 successively from top to bottom, even The upper end of female connector 4 is connected with top connection 1, and the lower end of adapter sleeve 4 is connected with the upper end periphery of connector 5, the lower end inner circle of connector 5 Face is connected with piston switch 8, and the lower end periphery of connector 5 is connected with the upper end inner headed face of spring socket sleeve 10, spring socket sleeve 10 Lower end be connected with intermediate rubber cartridge module upper end, the lower end of intermediate rubber cartridge module is connected with slip cap 18, sets in lower contact 20 There is positioning step, ball seat 23 is fixed with positioning step.
Packer element of the present invention is set using expanding, is realized one-trip string and is completed set, produce, Greatly simplifie construction technology;Production only need to be by the packer with being connected in oil extraction in oil field tubing string, and its tubing string can be designed It is (from well head to underground):Oil pipe+oil well pump+overcurrent-overvoltage standing valve+oil pipe+the design long packing element packer+oil pipe+eye pipe + tail pipe+dead stifled, its Central Plains pump standing valve needs to be replaced by overcurrent-overvoltage standing valve (can excessively stream, overvoltage), it is normal under be drilled into design Position connected pipes are hung, and oil pipe is suppressed, packer setting, 15MPa when packer startup, 10MPa when pressure is to 5MPa When set shear pin 422 and cut, steel ball 421 falls into tail pipe with ball seat 423, and lower oil well pump, sucker rod simultaneously touch pump, now overcurrent-overvoltage Standing valve is seated on ball seat, and normal oil recovery, the connection of the packer upper end can be started after installing production wellhead and oil pumper Set 4 is threadedly coupled by unsealing shear pin 3 with top connection 1, deblocking shear pin is cut when needing to salvage, by putting on joint in continuation 1, you can risen with flow string by the long packing element packer, complete inspection pump or fishing.
Embodiment 2:
On the basis of embodiment 1, the invention provides a kind of oil field every long packing element packer is used, at least including above connecing First 1, central tube 2, adapter sleeve 4, connector 5, piston switch 8, spring socket sleeve 10, intermediate rubber cartridge module, slip cap 18, lower contact 20th, shear pin 22, ball seat 23 are set, the upper end of described central tube 2 has been connected through a screw thread top connection 1, and the lower end of central tube 2 leads to Cross and be threaded with lower contact 20, be socketed with successively from top to bottom on central tube 2 adapter sleeve 4, connector 5, spring socket sleeve 10, in Between packing element component and slip cap 18, described adapter sleeve 4 is connected with top connection 1 by unsealing shear pin 3, the lower end of adapter sleeve 4 with The upper end periphery connection of connector 5, interior groove is provided with connector 5, and O-ring 6, the lower end inner circle of connector 5 are housed on interior groove Face is connected with piston switch 8, and the lower end periphery of connector 5 is connected through a screw thread with the upper end inner headed face of spring socket sleeve 10, institute The inside that vulcanization has Rubber cap-like outer cover for closure 7, piston switch 8 on the piston switch 8 stated is equipped with sealing ring, piston switch 8 and spring socket sleeve Back-moving spring 9 is clamped between 10, the lower end of spring socket sleeve 10 is connected with intermediate rubber cartridge module upper end, under intermediate rubber cartridge module End is connected with slip cap 18, and built with sealing ring 19, lower contact 20 is interior to be provided with positioning table to the interior circular groove of described slip cap 18 Rank, described ball seat 23 is fixedly connected at the positioning step of lower contact 20 by setting shear pin 22, and is set under shear pin 22 End is withstood on ball seat;Steel ball 21 is provided with described ball seat 23, the outer surface of ball seat 23 is equipped with sealing ring.
Described intermediate rubber cartridge module include upper jacket 11, upper packing element fixed seat 12, set packing element 13, lower jacket 16 and under Packing element fixed seat 17, the upper end of described upper jacket 11 is threadedly coupled with spring socket sleeve 10, the lower end of upper jacket 11 and upper packing element Fixed seat 12 is threadedly coupled, and vulcanization is fixed with and sets packing element 13 between upper packing element fixed seat 12 and lower rubber cylinder fixed seat 17, described Sealing cylinder 13 in be set with steel belt framework 14, the outer round surface vulcanization of described steel belt framework 14 is fixed with cartridge 15, The upper end of the cylindrical and lower jacket 16 of lower rubber cylinder fixed seat 17 is connected, and the lower end of lower jacket 16 is threadedly coupled with slip cap 18.
Assembling process of the invention is:First adapter sleeve 4 is set with from the top of central tube 2, then top connection 1 and central tube 2 threaded connections, deblocking shear pin 3 is screwed in behind alignment adapter sleeve 4 and the shear pin hole of top connection 1;O-ring 6 is first loaded into connector 5 , from the bottom of central tube 2 be set with connector 5 again then and be threadedly coupled with adapter sleeve 4 by interior groove;Rubber cap-like outer cover for closure 7 cures On piston switch 8, sealing ring is first loaded onto inside piston switch 8 and then from the bottom of central tube 2 suit, it is delayed again successively from center The bottom of pipe 2 is set with back-moving spring 9, spring socket sleeve 10, and spring socket sleeve 10 is threadedly coupled with connector 5, now completes top Divide and install.
First by steel belt framework 14 (typically about 100 or so) in sequence one by one cylindric frock (with set packing element 13 grade external diameters) cylindrical place arrange blend rubber bar binding, then welded at two ends;Packing element 13 (uncolled) will be set In upper packing element fixed seat 12 and lower rubber cylinder fixed seat 17,14 sets of loadings of the steel belt framework that then will be welded set packing element for vulcanization 13, finally upper jacket 11 is threadedly coupled with upper packing element fixed seat 12, lower jacket 16 with lower rubber cylinder fixed seat 17 respectively again;Wait Set after packing element 13 is cooled down and cartridge 15 is vulcanized into position corresponding in the outer round surface of steel belt framework 14 again, now complete middle The installation of packing element component.
Sealing ring first is loaded onto in the outer surface of ball seat 23, is then loaded to positioning step from the endoporus of lower contact 20, then will Set shear pin 22 to be screwed in from the hole of lower contact 20 up to withstanding in the outer surface groove of ball seat 23, now complete lower part and install.
Mounted packing element component is covered from the bottom of central tube 2 again after the external screw thread root of spring socket sleeve 10 loads sealing ring Dress, and upper jacket 11 is threadedly coupled with spring socket sleeve 10;First load sealing ring 19, external screw thread in the interior circular groove of slip cap 18 Root loads sealing ring, is then set with and is threadedly coupled with lower jacket 16 from the bottom of central tube 2 again;Finally by lower contact 20 with Heart pipe 2 is threadedly coupled and is put into steel ball from the top of central tube 2 and completes all installation processes.
Working mechanism of the invention is following (with 51/2As a example by the broken well construction of the set of 〞 oil pipe completions):
1st, normal lower brill
The packer is mainly used in the broken well top water exclusion of oil field set, and its completion tubular column may be designed as (from well head to underground): Oil pipe+oil well pump+overcurrent-overvoltage standing valve+oil pipe+the design long packing element packer+oil pipe+eye pipe+tail pipe+dead stifled, its Central Plains Pump standing valve needs to be replaced by overcurrent-overvoltage standing valve (can excessively stream, overvoltage), it is normal under be drilled into design attitude connected pipes and hang i.e. Can.
2nd, set packer
Suppressed in oil pipe, when pressurization reaches 5MPa, piston switch 8 promotes compression reseting spring 9 to transport downwards by hydraulic coupling Dynamic, while Rubber cap-like outer cover for closure 7 also leaves taper hole slot with piston switch 8, liquid is passed sequentially through between piston switch 8 and spring socket sleeve 10 Gap and spring socket sleeve 10 enter intermediate rubber cartridge module with the gap of central tube 2, cause and set packing element 13, steel belt framework 14, fluid sealant The bulging together of cylinder 15, then drives the constantly sliding upwards of lower jacket 16, lower rubber cylinder fixed seat 17, slip cap 18;With pressure Constantly expansion is finally close to internal surface of sleeve pipe to gradually rise cartridge 15, completes to set when pressure reaches 10MPa;Now continue Pressure is improved, shear pin 22 is set when pressure is to 15MPa and is cut, steel ball 21 falls into tail pipe with ball seat 23, now oil pipe moment pressure Power reduction, shows that instrument sets completely.
3rd, it is normal to recover the oil
Lower sucker rod simultaneously touches pump, and now overcurrent-overvoltage standing valve is seated on ball seat (equivalent to conventional standing valve), installs Normal oil recovery can be started after production wellhead and oil pumper, the oil of bottom oil layer enters oil pipe and passes through the design long packing element type through eye pipe It is plucked out of into oil well pump after packer, the oil jacket annular space at the design long packing element packer position is realized just by completely separated Often recover the oil.
4th, pump or salvaging are examined
When needing inspection pump or salvaging, oil pumper and production wellhead are laid down, act sucker rod, then above carried flow string and first cut Disconnected deblocking shear pin 3, then proceedes to propose now top connection 1, central tube 2 and constantly moves up, when the bottom gas pressure relief slot of central tube 2 is logical Cross sealing ring 19 and laid down into intermediate rubber cartridge module internal pressure after 18 times step endoporus of slip cap, set packing element 13, steel band Skeleton 14, cartridge 15 bounce back together, when the outer surface of upper step of central tube 2 is run to the interior step of adapter sleeve 4, band Dynamic adapter sleeve 4, connector 5, spring socket sleeve 10, back-moving spring 9, piston switch 8, Rubber cap-like outer cover for closure 7, upper jacket 11, upper packing element are consolidated Reservation 12, set packing element 13, steel belt framework 14, cartridge 15, lower jacket 16, lower rubber cylinder fixed seat 17, slip cap 18 together It is up, deblocking packer overall process is realized, the design long packing element packer is risen with flow string, completes inspection pump or salvaging Operation.
In sum, it is applied to cased hole completion and the water outlet of reservoir top and the run-down place's water outlet of sleeve pipe the invention provides one kind Reverse-filling every adopting completion system, a kind of long packing element packer designed particularly directed to the broken well top water exclusion of oil field set should Packer is combined with oil field rod-type pumping unit DP technology, it is possible to achieve one-trip string completes set, produce, and will expand first Formula packer application is opened every adopting, there is longer effective packing face compared with conventional Water-isolation oil production packer, greatly improved Packing success rate is, it is necessary to upper lifting pipe post can carry out deblocking salvaging during wellbore operations.
The packer has the following advantages that:1st, packer element involved in the present invention is set using expanding, On the premise of realizing that one-trip string completes to set, produce, with longer effective packing face, (cartridge 15 can be designed in 1.5m More than), packing success rate greatly improved;2nd, packer inside without any position constraint there is longer compression travel can obtain Larger compression ratio, it is sufficient to ensure that sealing unit fully sets, good sealing effect;3rd, the packer is controlled using piston switch Gas pressure relief slot in locking (piston switch 8 is opened when tubing pressure is more than 5MPa), central tube controls deblocking, internal without positioning liquid Pressure chamber, self-locking mechanism and solution sealing mechanism etc., design difficulty of processing is greatly reduced on the premise of electrodeless differential self-locking is realized, Packer bulk strength is ensure that simultaneously, later stage deblocking is reduced and is salvaged accident rate;4th, the packer without shaft bottom support and Set is not influenceed by casing coupling, is capable of achieving optional position in pit shaft and is set, unseals, pit shaft strong adaptability;5th, the packer Break first every the design routine for adopting class packer " sealing unit+slips ", employing packing element sealing surface long after setting (can Reach more than 1m) grappling is carried out with sleeve friction power, the slips of bit freezing risk is easily caused when eliminating deblocking, from design source Potential safety hazard is eliminated, deblocking is significantly reduced and is salvaged risk.

Claims (10)

1. a kind of oil field is every using long packing element packer, it is characterised in that:At least include top connection (1), central tube (2), connection Set (4), connector (5), piston switch (8), spring socket sleeve (10), intermediate rubber cartridge module, slip cap (18), lower contact (20), Shear pin (22), ball seat (23) are set, the upper end of described central tube (2) is connected with top connection (1), and the lower end of central tube (2) connects Be connected to lower contact (20), be socketed with successively from top to bottom on central tube (2) adapter sleeve (4), connector (5), spring socket sleeve (10), Intermediate rubber cartridge module and slip cap (18), the upper end of adapter sleeve (4) are connected with top connection (1), the lower end of adapter sleeve (4) be connected Head (5) upper end periphery connection, connector (5) lower end inner headed face is connected with piston switch (8), and connector (5) lower end is cylindrical Face is connected with the upper end inner headed face of spring socket sleeve (10), and the lower end of spring socket sleeve (10) is connected with intermediate rubber cartridge module upper end, in Between the lower end of packing element component be connected with slip cap (18), positioning step is provided with lower contact (20), described ball seat (23) leads to Cross and set shear pin (22) and be fixed at described positioning step.
2. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that:Described middle packing element Component includes upper jacket (11), upper packing element fixed seat (12), sets packing element (13), lower jacket (16) and lower rubber cylinder fixed seat (17), the upper end of described upper jacket (11) is threadedly coupled with spring socket sleeve (10), and the lower end of upper jacket (11) is solid with upper packing element Reservation (12) is threadedly coupled, and vulcanization is fixed with and sets packing element between upper packing element fixed seat (12) and lower rubber cylinder fixed seat (17) (13), the upper end of the cylindrical and lower jacket (16) of lower rubber cylinder fixed seat (17) is connected, the lower end of lower jacket (16) and slip cap (18) it is threadedly coupled.
3. a kind of oil field according to claim 2 is every using long packing element packer, it is characterised in that:Described sealing cylinder (13) steel belt framework (14) is set with, the outer round surface vulcanization of described steel belt framework (14) is fixed with length not less than 1.5m Cartridge (15).
4. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that:Described piston switch (8) back-moving spring (9) is clamped with and spring socket sleeve (10) between.
5. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that:Described adapter sleeve (4) it is connected by unsealing shear pin (3) with top connection (1).
6. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that:Described connector (5) interior groove is provided with, O-ring (6) is housed on interior groove.
7. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that:Described piston switch (8) inside that vulcanization has Rubber cap-like outer cover for closure (7), piston switch (8) on is equipped with sealing ring.
8. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that:Described central tube (2) it is connected through a screw thread between upper end and top connection (1), screw thread is passed through between the lower end of central tube (2) and lower contact (20) Connection;Connector (5) lower end periphery is connected through a screw thread with the upper end inner headed face of spring socket sleeve (10).
9. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that:Described slip cap (18) interior circular groove is built with sealing ring (19).
10. a kind of oil field according to claim 1 is every using long packing element packer, it is characterised in that:Described ball seat (23) steel ball (21) is provided with, the outer surface of ball seat (23) is equipped with sealing ring.
CN201611205038.8A 2016-12-23 2016-12-23 A kind of oil field is every using long packing element packer Pending CN106761538A (en)

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Application Number Priority Date Filing Date Title
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CN202165047U (en) * 2011-07-15 2012-03-14 中国石油天然气股份有限公司 Expanding type open hole packer for horizontal wells
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WO2014100141A2 (en) * 2012-12-18 2014-06-26 Frazier Technologies, L.L.C. Downhole tools having non-toxic degradable elements and methods of using the same
CN203702074U (en) * 2013-11-25 2014-07-09 天津大港油田钻采技术开发公司 Well flushable long rubber sleeve pressure differential water injection packer
CN104948145A (en) * 2015-05-14 2015-09-30 胜利油田康贝石油工程装备有限公司 Construction method for filling gravel in horizontal oil well pipe
CN104963652A (en) * 2015-06-30 2015-10-07 中国石油集团渤海钻探工程有限公司 Self-sealing compressed packer
CN206376810U (en) * 2016-12-23 2017-08-04 中国石油天然气股份有限公司 A kind of oil field is every using long packing element packer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2799849Y (en) * 2005-05-25 2006-07-26 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 Packer for plugging shot hole
US20070142547A1 (en) * 2005-12-16 2007-06-21 Schlumberger Technology Corporation Polymeric Composites, Oilfield Elements Comprising Same, and Methods of Using Same in Oilfield Applications
CN102071900A (en) * 2010-11-23 2011-05-25 中国石油天然气股份有限公司 Custom-pressure expandable naked eye packer
CN202165047U (en) * 2011-07-15 2012-03-14 中国石油天然气股份有限公司 Expanding type open hole packer for horizontal wells
CN202810776U (en) * 2012-10-28 2013-03-20 大庆泰泽机械加工有限公司 High pressure expanding type well-flushing packer
WO2014100141A2 (en) * 2012-12-18 2014-06-26 Frazier Technologies, L.L.C. Downhole tools having non-toxic degradable elements and methods of using the same
CN203702074U (en) * 2013-11-25 2014-07-09 天津大港油田钻采技术开发公司 Well flushable long rubber sleeve pressure differential water injection packer
CN104948145A (en) * 2015-05-14 2015-09-30 胜利油田康贝石油工程装备有限公司 Construction method for filling gravel in horizontal oil well pipe
CN104963652A (en) * 2015-06-30 2015-10-07 中国石油集团渤海钻探工程有限公司 Self-sealing compressed packer
CN206376810U (en) * 2016-12-23 2017-08-04 中国石油天然气股份有限公司 A kind of oil field is every using long packing element packer

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