CN201982057U - Gradually-deblocking well-flushing type packer - Google Patents

Gradually-deblocking well-flushing type packer Download PDF

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Publication number
CN201982057U
CN201982057U CN2011200218963U CN201120021896U CN201982057U CN 201982057 U CN201982057 U CN 201982057U CN 2011200218963 U CN2011200218963 U CN 2011200218963U CN 201120021896 U CN201120021896 U CN 201120021896U CN 201982057 U CN201982057 U CN 201982057U
Authority
CN
China
Prior art keywords
flushing
well
piston
seating nipple
working barrel
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.)
Expired - Fee Related
Application number
CN2011200218963U
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Chinese (zh)
Inventor
梁伟成
刘亚三
梁闯
Original Assignee
梁伟成
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 梁伟成 filed Critical 梁伟成
Priority to CN2011200218963U priority Critical patent/CN201982057U/en
Application granted granted Critical
Publication of CN201982057U publication Critical patent/CN201982057U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a gradually-deblocking well-flushing type packer, comprising an upper joint, a central pipe, an upper working barrel, a well-flushing working barrel, a well-flushing piston component, a fixed ring, a well-flushing ring, a rubber barrel component, a fixed piston, a release piston component, a clamping spring component, a release barrel, an outer working barrel and a lower joint. The gradually-deblocking well-flushing type packer is characterized in that the fixed ring is in threaded connection with the upper working barrel; the upper end of the upper working barrel is in threaded connection with the upper joint; the circumferential wall of the upper end of the fixed ring is provided with through holes uniformly distributed; the through holes are internally provided with steel balls; the well-flushing working barrel is provided with an outer arc groove matched with the steel balls; the inner circumferential surface of the well-flushing piston component is matched with the fixed ring for assembling the steel balls in a sliding manner, and the outer circumferential surface of the wall-flushing piston component is matched with the inner circumferential surface of the upper working barrel in a sliding manner; the upper end and the lower end of the central pipe are respectively provided with a pressure inlet hole, and the upper end of the central pipe is in threaded connection with the sealing piston and is sheathed with the upper joint; and the sealing piston is axially fixed with the upper working barrel shaft by a deblocking pin.

Description

A kind of step-by-step releasable flushing formula packer
Technical field
The utility model belongs to the packing device of a kind of producing well oil recovery, water filling well-flushing, particularly a kind of step-by-step releasable flushing formula packer.
Background technology
Packer is that the oil field is used for the requisite downhole tool of formation testing, oil recovery, water filling and oil formation improvement.In order to improve the pressure of oilbearing stratum, and then raising oil recovery well yield, adopt method toward underground seperated layer water injection, at present in order to improve water-injection efficiency, multiple-string packer packing, realization layering water filling simultaneously, the therefore less important multiple-string packers down of adopting more, can save operating cost like this, improve oil displacement efficiency again.But the problem that exists is: adopt the multiple-string packer of conventional structure, when the deblocking workover treatment, owing to be that the multi-stage series connection structure can not be separated lifting, it is excessive to produce deblocking power when deblocking, will cause danger to uphole equipment, influences the normal operation of equipment.Thereby will solve the deblocking power that how to reduce each grade.And then realization down-hole multilayer oil production technology.
Summary of the invention
The purpose of this utility model provides a kind of step-by-step releasable flushing formula packer, and when the deblocking workover treatment, the classification deblocking reduces lifting load, and ground installation can meet the demands, and improves functioning efficiency, strengthens oil displacement efficiency, improves oil recovery efficiency.
The technical scheme that the utility model provides is as follows: comprise top connection, central tube, go up seating nipple, well-flushing seating nipple, well-flushing piston component, retainer ring, well-flushing ring, packing element assembly, fixed piston, release plunger assembly, jump ring assembly, release tube, outer working tube and lower contact, it is characterized in that: retainer ring is gone up seating nipple by being threaded, and top connection is threaded on the last seating nipple; On the circumferential wall of retainer ring upper end uniform through hole is set, steel ball is installed in the through hole, the well-flushing seating nipple is provided with the external arc groove that matches with steel ball; Well-flushing piston component inner peripheral surface is slidingly matched with the retainer ring of assembling steel ball, and outer circumference surface and last seating nipple inner peripheral surface are slidingly matched; The central tube upper and lower end is provided with the entrance pressure hole respectively, and packed-piston and suit top connection are threaded on it; Packed-piston is by deblocking pin and last seating nipple axial restraint.
The utility model has the advantages that: owing to adopt the steel ball latch-up structure, the compressive force of packing element is acted on the central tube fully by the steel ball transmission, thereby the deblocking pin can bear less power, and realize gradually deblocking; Reduce lifting load, satisfy the ground installation requirement, save the activity duration, improve operating efficiency, strengthen oil displacement efficiency, improve oil recovery efficiency, can finish the multiple-string packer anti-flushing well simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the left part structure enlarged diagram of Fig. 1.
Fig. 3 is the right part structure enlarged diagram of Fig. 1.
Fig. 4 is the N portion enlarged diagram of Fig. 1.
Fig. 5 is the M portion enlarged diagram of Fig. 1.
Fig. 6 is the L portion enlarged diagram of Fig. 1.
Fig. 7 is A-A sectional view of Fig. 1.
The specific embodiment
See Fig. 1-3, concrete structure is as follows: lower contact 1 lower end is the external taper gas thread, and the upper end is connected with outer working tube 5 by external screw thread, is connected with central tube 22 by internal thread.Central tube 22 upper and lower ends are provided with entrance pressure hole 25,2 respectively, the central tube 22 lower, outer perimeter face suit release plunger 3 and the release plunger 4 that are threaded, and two-piston is formed the release plunger assembly; Release tube 6 is housed between outer working tube 5 and the release plunger 4, discharges tube 6 upper ends and contact with well-flushing ring 13.See Fig. 4,5, be provided with unidirectional notched teeth in the release tube 6, (for prior art) is meshed with the C type jump ring 8 that has unidirectional tooth.Well-flushing ring 13 links together by release pin 12 and fixed piston 11, and fixed piston 11 links together by screw thread and central tube 22.The unidirectional tooth C type jump ring 8 of jump ring assembly is installed between the clip spring seat 7,10, and clip spring seat 10 is connected with fixed piston 11 by deblocking pin 9, and all is sleeved on the central tube 22.The central tube 22 stage casings well-flushing seating nipple 17 that is threaded is provided with well-flushing inlet E and well-flushing liquid outlet D on the well-flushing seating nipple 17.The packing element assembly 15 of suit segmentation on well-flushing seating nipple 17.
When central tube 22 adds hydraulic pressure by entrance pressure hole 2, make on the release plunger assembly to move, promote to discharge on the tube 6 and move, well-flushing ring 13 compression packing element assemblies 15 make its diametric(al) distortion, finish the effect of Sealed casing pipe annular space.
See Fig. 3,6,7, packing element assembly 15 upper ends are provided with retainer ring 18, and retainer ring 18 is gone up seating nipple 19 by being threaded, the top connection 14 that is threaded of last seating nipple 19 upper ends.The through hole that is uniformly distributed along the circumference is set on the circumferential wall of retainer ring 18 upper ends, steel ball 16 is installed in the through hole.Well-flushing seating nipple 17 is provided with the external arc groove that matches with steel ball 16.Piston 20 inner peripheral surfaces of well-flushing piston component are slidingly matched with the retainer ring 18 of dress steel ball 16, and outer circumference surface and last seating nipple 19 inner peripheral surfaces are slidingly matched.Piston 20 upper ends of the well-flushing piston component piston 21 that is threaded.Packed-piston 23 is by deblocking pin 24 and last seating nipple 19 axial restraints.The compression force of packing element assembly 15 acts on the well-flushing seating nipple 17 by steel ball 16 on retainer ring 18, acts at last on the central tube 22.Thereby the deblocking pin does not stress for 24 this moments, so add casing pressure during deblocking earlier, the well-flushing piston component is pushed away steel ball 16, steel ball 16 skids off from the external arc groove of well-flushing seating nipple 17, put on joint 14, last seating nipple 19 is cut off deblocking pin 24, drives on the retainer ring 18 to move, make packing element assembly 15 retractions, finish deblocking.
During well-flushing, flushing fluid is entered by oil pipe and oil jacket annular space, and flushing fluid is pushed well-flushing piston 20,21 open, enters the well-flushing passage.Walk around a few flushing fluid outlets in packing element position, finish well-flushing work.

Claims (1)

1. step-by-step releasable flushing formula packer, comprise top connection, central tube, go up seating nipple, well-flushing seating nipple, well-flushing piston component, retainer ring, well-flushing ring, packing element assembly, fixed piston, release plunger assembly, jump ring assembly, release tube, outer working tube and lower contact, it is characterized in that: retainer ring is gone up seating nipple by being threaded, and top connection is threaded on the last seating nipple; On the circumferential wall of retainer ring upper end uniform through hole is set, steel ball is installed in the through hole, the well-flushing seating nipple is provided with the external arc groove that matches with steel ball; Well-flushing piston component inner peripheral surface is slidingly matched with the retainer ring of assembling steel ball, and outer circumference surface and last seating nipple inner peripheral surface are slidingly matched; The central tube upper and lower end is provided with the entrance pressure hole respectively, and packed-piston and suit top connection are threaded on it; Packed-piston is by deblocking pin and last seating nipple axial restraint.
CN2011200218963U 2011-01-24 2011-01-24 Gradually-deblocking well-flushing type packer Expired - Fee Related CN201982057U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200218963U CN201982057U (en) 2011-01-24 2011-01-24 Gradually-deblocking well-flushing type packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200218963U CN201982057U (en) 2011-01-24 2011-01-24 Gradually-deblocking well-flushing type packer

Publications (1)

Publication Number Publication Date
CN201982057U true CN201982057U (en) 2011-09-21

Family

ID=44609520

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200218963U Expired - Fee Related CN201982057U (en) 2011-01-24 2011-01-24 Gradually-deblocking well-flushing type packer

Country Status (1)

Country Link
CN (1) CN201982057U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102071899A (en) * 2011-01-24 2011-05-25 梁伟成 Gradually unpacked washable well packer
CN104295261A (en) * 2014-10-17 2015-01-21 中国石油天然气股份有限公司 Self-examination packer
CN104806194A (en) * 2015-05-18 2015-07-29 长春市恒大石油机械有限公司 Environment-friendly well-washable step-by-step deblocking water injection packer
CN111927382A (en) * 2020-08-07 2020-11-13 中国石油大学(北京) Packer (CN)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102071899A (en) * 2011-01-24 2011-05-25 梁伟成 Gradually unpacked washable well packer
CN102071899B (en) * 2011-01-24 2013-08-21 梁伟成 Gradually unpacked washable well packer
CN104295261A (en) * 2014-10-17 2015-01-21 中国石油天然气股份有限公司 Self-examination packer
CN104806194A (en) * 2015-05-18 2015-07-29 长春市恒大石油机械有限公司 Environment-friendly well-washable step-by-step deblocking water injection packer
CN104806194B (en) * 2015-05-18 2017-07-18 长春市恒大石油机械有限公司 Environment-friendly type washing well water injection packer with step-by-step deblocking
CN111927382A (en) * 2020-08-07 2020-11-13 中国石油大学(北京) Packer (CN)
CN111927382B (en) * 2020-08-07 2022-04-29 中国石油大学(北京) Packer (CN)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110921

Termination date: 20130124

CF01 Termination of patent right due to non-payment of annual fee