CN201705254U - Hydraulic booster for pipe string unpacking - Google Patents

Hydraulic booster for pipe string unpacking Download PDF

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Publication number
CN201705254U
CN201705254U CN 201020225671 CN201020225671U CN201705254U CN 201705254 U CN201705254 U CN 201705254U CN 201020225671 CN201020225671 CN 201020225671 CN 201020225671 U CN201020225671 U CN 201020225671U CN 201705254 U CN201705254 U CN 201705254U
Authority
CN
China
Prior art keywords
piston
hole
lower piston
hydraulic booster
tubing string
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
CN 201020225671
Other languages
Chinese (zh)
Inventor
吴荷香
童琥
黄春燕
陈俊国
施珠华
侯双亮
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.)
China Petroleum and Chemical Corp
Petroleum Engineering Technology Research Institute of Sinopec Henan Oilfield Branch Co
Original Assignee
China Petroleum and Chemical Corp
Petroleum Engineering Technology Research Institute of Sinopec Henan Oilfield Branch Co
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 Chemical Corp, Petroleum Engineering Technology Research Institute of Sinopec Henan Oilfield Branch Co filed Critical China Petroleum and Chemical Corp
Priority to CN 201020225671 priority Critical patent/CN201705254U/en
Application granted granted Critical
Publication of CN201705254U publication Critical patent/CN201705254U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a hydraulic booster for pipe string unpacking, which comprises an outer sleeve and an inner sleeve inserted in the outer sleeve. The inner sleeve comprises an upper piston, a lower piston and a center tube which are sequentially fixedly connected from top to bottom, the upper piston and the lower piston are sleeve structures, the upper piston, the lower piston and the center tube are in sealing matching with corresponding walls of the outer sleeve, an upper guide through hole is arranged on a sleeve body at a connection position of the lower piston and the upper piston, a lower guide through hole is arranged on a sleeve body at a connection position of the center tube and the lower piston, and the outer sleeve is provided with a pressure relief through hole correspondingly communicated with the upper guide through hole. The hydraulic booster can realize construction tasks such as unpacking, tripping-out and the like of pipe strings by adopting the simple inner sleeve, and is simple in structure, stable in property and convenient in use. In addition, the pistons are sealed with a steel sleeve via clamp springs with fine repeated sealing property, thereby realizing downhole repeated actions better.

Description

Tubing string deblocking hydraulic booster
Technical field
The utility model relates to a kind of tubing string deblocking hydraulic booster, be applicable to various tubing strings in the oil well deblocking, construction task such as trip out.
Background technology
At present; in each oil field in order to reduce pumpingh well well spacing quantity; reduce land seizure; alleviate the pressure of oilfield exploitation to environmental protection; reduce the development investment cost; the application of complex structural well more and more widely mainly comprises conventional inclined shaft (hole angle<35 °), high angle hole (hole angle 〉=35 °) and horizontal well etc.The region that this class oil well distributes is subjected to ground end faults control obvious, and its stratigraphic section is " ridge " and distributes, and it is " imbricate " spread in the plane along the nose structure high-order bit, and the oil-bearing layer position is many, physical difference is big, non-homogeneity is serious.Therefore usually adopt full well to close and adopts, owing to be subjected to the influence of non-homogeneity, during Quan Jinghe adopts and makes, the development degree of less permeable layer is poor.At home, utilize Y441 packer or K344 pony packer, obtained certain effect, but can not realize the random layer exploitation as permanent instrument to bottom water plugging; Abroad, mainly adopt the very strong coiled tubing operation of pliability.Be lowered to and set the expansion type bridging plug, cementing on bridging plug then forms permanent packing, is lowered to pressure and sets formula packer instrument assembly, selects a layer squeeze note operation.The water-plugging technology tubing string of implementing at horizontal well adopts conventional straight well packer to the complex structural well water blockoff more at present, and Shang Weijian has the report that trips out.Along with the oil field enters development late stage, most of oil well need carry out separate zone production, adopts the water plugging string of giving up to improve the development effectiveness of the special oil well of this class.Because the particularity of well track, big along journey frictional resistance during the tubing string deblocking, the strength that is delivered to Packer for blocking water is little, causes the packer difficulty, even can't deblocking.
Notification number is that patent document that CN 201037387Y, name are called " the hydraulic pressure tubing string draws the postscript device " discloses a kind of hydraulic pressure tubing string that comprises that members such as hydraulic power unit (comprising overcoat, piston, central tube) and fishing rod and anchor fluke are formed and draws the postscript device, can realize the construction task such as salvaging, unfreezing, drawing of oil well production string, but its complex structure assembles cumbersome.
The utility model content
The purpose of this utility model is to provide a kind of tubing string deblocking hydraulic booster, simplified apparatus member, and the sealing performance of raising equipment in motion process repeatedly.
The technical solution of the utility model is to have adopted a kind of tubing string deblocking hydraulic booster, comprise outer tube and be plugged in inner sleeve in the outer tube, described inner sleeve comprises upper piston, lower piston and the central tube that is fixedly connected sequentially from top to bottom, and the corresponding jacket wall sealed sliding of upper piston, lower piston and central tube and outer tube movingly; The body of lower piston and upper piston junction is provided with the water conservancy diversion through hole, and the body of central tube and lower piston junction is provided with down the water conservancy diversion through hole, outer tube be provided with can with the described corresponding pressure release through hole that communicates of water conservancy diversion through hole of going up.
Described outer tube comprises the top connection that is fixedly connected sequentially, last overcoat, connector, following overcoat and supporter from top to bottom, and last overcoat is sealed and matched with the corresponding tube wall of connector, and following overcoat is sealed and matched with the corresponding tube wall of supporter.
The described water conservancy diversion through hole of going up is arranged on the lower piston body of lower piston and upper piston junction.
Described water conservancy diversion through hole down is arranged on the central tube body of lower piston and central tube junction.
Described pressure release through hole is arranged on the body of overcoat.
Be provided with the jump ring groove on the side face at described upper piston and lower piston and outer tube corresponding matching position, seal by jump ring between piston and the outer tube.
The utility model hydraulic booster adopts the joint design at simple piston in combination and two ends, but can guarantee its repetitive operation, cooperate hydraulic anchor and drag for lance and use in the down-hole, be used to realize down-hole string deblocking, construction task such as trip out, simple in structure, easy to use.
The inner sleeve structure that the utility model adopts, member is few, and structure is tightly short, has reduced connection and sealing process between member, and structure is simpler, more stable, and sealing effectiveness is better; And the set-up mode of pressure release through hole of the present utility model and water conservancy diversion through hole makes the cooperation precision between member higher, and the stability of equipment is better; Between piston and outer tube, adopt the jump ring sealing, improve sealing performance repeatedly, overcome the problem of General Purpose Rubber circle cracky in the reciprocating motion process, guarantee that tubing string buries etc. at sand in particular cases can trip out safely.
Description of drawings
Fig. 1 is the structural representation of the utility model hydraulic booster;
Schematic diagram when Fig. 2 is used for the tubing string deblocking for the utility model hydraulic booster.
The specific embodiment
As shown in Figure 1, the utility model hydraulic booster comprises top connection 1, upper piston 2, upward overcoat 3, jump ring 4, connector 5, lower piston 6, overcoat 7, central tube 8, support set 9, lower contact 10 down.During assembling, the corresponding parts of earlier jump ring 4, O-ring seal being packed into, wherein the lower end of upper piston 2 and lower piston 6 respectively is equipped with two jump rings 4, and the upper end of the lower end of top connection 1, lower contact 10 respectively is equipped with a sealing ring, and the upper end of connector 5 and support set 9 respectively is equipped with two sealing rings; To go up steel bushing 3, connector 5, following steel bushing 7 then successively together by screwed connection, then with lower piston 6 and central tube 8 by in the steel bushing 7 of packing into after the screwed connection together down, support set 9 is connected with following steel bushing 7 by screw thread, and lower contact 10 is connected with central tube 8 by screw thread; Upper piston 2 packed into go up in the steel bushing 3, and be connected with lower piston 6 by screw thread; Last top connection 1 is connected with last steel bushing 3 by screw thread, and fastening with fixing pin.
During work, in hydraulic booster, beat hydraulic pressure by tubing string, owing to be provided with water conservancy diversion through hole (going up water conservancy diversion through hole 22 and following water conservancy diversion through hole 23) on lower piston and the central tube, when hydraulic pressure acts on piston by the water conservancy diversion through hole, the member that piston drives its lower end moves up together, and when piston moved to the maximum functional stroke, it was corresponding with the last water conservancy diversion through hole 22 on the lower piston to go up the outer pressure release through hole 21 that puts, form pressure release passage, hydraulic booster quits work; The upper lifting pipe post drives outer tube and moves up once more, reserves working space again; Repeat said process, can by hydraulic booster the repetitive operation of down-hole realize tubing string deblocking, construction task such as trip out.And between piston and outer tube,, improve sealing performance repeatedly, overcome the problem of General Purpose Rubber circle cracky in the reciprocating motion process, guaranteed the repetitive operation of hydraulic booster in the down-hole by the jump ring sealing.
With the high angle hole is that example illustrates using method of the present utility model, as shown in Figure 2, when oil well production after a period of time, when needing to transfer layer or changing envelope, need trip out the shutoff tubing string of forming by back-off sub 14, Packer for blocking water 15, centralizer 16, ball-and-seat 17, plug 18 etc., can use this to use novel booster with the deblocking of realizing tubing string or trip out.At first be lowered to the fishing string that has hydraulic anchor 11, hydraulic booster 12 and drag for lance 13; After dragging for lance 13 and dragging for back-off sub 14, upwards lift tubing string earlier, make oil pipe be in extended state; Judge whether deblocking of packer according to load condition during the upper lifting pipe post, if when deblocking is met card, beat hydraulic pressure in oil pipe, the anchor tooth of hydraulic anchor 11 struts anchoring string; Under pressure, hydraulic booster 12 begins action, moves in upper piston 2, lower piston 6, central tube 8, the lower contact 10 together, drives the tubing string of giving up and moves up; When displacement equals the design runlength of hydraulic booster 12, top connection 1 contacts with upper piston 2, connector 5 and lower piston 6, support set 9 and lower contact 10 end faces, last overcoat 3 is corresponding with the through hole of lower piston 6, forms pressure release passage, and the anchor tooth of hydraulic anchor 11 reclaims; Upper lifting pipe post then, top connection 1, go up overcoat 3, connector 5, overcoat 7, support set 9 move on together down, reserve working space again.Repeat said process, until the complete deblocking of tubing string.

Claims (6)

1. tubing string deblocking hydraulic booster, comprise outer tube and be plugged in inner sleeve in the outer tube, it is characterized in that: described inner sleeve comprises upper piston (2), lower piston (6) and the central tube (8) that is fixedly connected sequentially from top to bottom, upper piston (2) and lower piston (6) are sleeve structure, and upper piston (2), lower piston (6) and central tube (8) are sealed and matched with the corresponding tube wall of outer tube; Upper piston (2) is provided with water conservancy diversion through hole (22) with the body of lower piston (6) junction, the body of lower piston (6) and central tube (8) junction is provided with down water conservancy diversion through hole (23), outer tube be provided with can with described on the corresponding pressure release through hole (21) that communicates of water conservancy diversion through hole.
2. tubing string deblocking hydraulic booster according to claim 1, it is characterized in that: described outer tube comprises the top connection (1) that is fixedly connected sequentially, last overcoat (3), connector (5), following overcoat (7) and supporter (9) from top to bottom, last overcoat (3) is sealed and matched with the corresponding tube wall of connector (5), and following overcoat (7) is sealed and matched with the corresponding tube wall of supporter (9).
3. tubing string deblocking hydraulic booster according to claim 1 is characterized in that: described upward water conservancy diversion through hole (22) is arranged on lower piston (6) body of lower piston (6) and upper piston (2) junction.
4. tubing string deblocking hydraulic booster according to claim 1 is characterized in that: described water conservancy diversion through hole (23) down is arranged on central tube (8) body of lower piston (6) and central tube (8) junction.
5. tubing string deblocking hydraulic booster according to claim 1 is characterized in that: described pressure release through hole (21) is arranged on the body of overcoat (3).
6. according to any described tubing string deblocking hydraulic booster among the claim 1-5, it is characterized in that: be provided with the jump ring groove on the side face at described upper piston (2) and lower piston (6) and outer tube corresponding matching position, seal by jump ring (4) between piston and the outer tube.
CN 201020225671 2010-06-13 2010-06-13 Hydraulic booster for pipe string unpacking Expired - Fee Related CN201705254U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201020225671 CN201705254U (en) 2010-06-13 2010-06-13 Hydraulic booster for pipe string unpacking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201020225671 CN201705254U (en) 2010-06-13 2010-06-13 Hydraulic booster for pipe string unpacking

Publications (1)

Publication Number Publication Date
CN201705254U true CN201705254U (en) 2011-01-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201020225671 Expired - Fee Related CN201705254U (en) 2010-06-13 2010-06-13 Hydraulic booster for pipe string unpacking

Country Status (1)

Country Link
CN (1) CN201705254U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107916910A (en) * 2016-10-10 2018-04-17 中国石油化工股份有限公司 Independent hydraulic control packer pressure valve
CN110485961A (en) * 2019-08-14 2019-11-22 中国石油化工股份有限公司 A kind of hydraulic shaping tubing string and casing swage technique
CN110836104A (en) * 2019-11-28 2020-02-25 中国石油集团川庆钻探工程有限公司 Bidirectional slip hydraulic permanent packer
CN110905439A (en) * 2019-11-28 2020-03-24 中国石油集团川庆钻探工程有限公司 Integrated downhole operation tool based on bidirectional slip hydraulic permanent packer
CN111005700A (en) * 2018-10-08 2020-04-14 中国石油化工股份有限公司 Quick-release hydraulic control packer and construction method
CN111997564A (en) * 2020-08-04 2020-11-27 中国石油化工股份有限公司 Integrative water-plugging pipe column of looking for of bottom block and pump seal moves about
CN112012668A (en) * 2020-10-12 2020-12-01 西南石油大学 Deepwater oil-gas well completion operation pipe string releasing, plugging and shearing integrated device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107916910A (en) * 2016-10-10 2018-04-17 中国石油化工股份有限公司 Independent hydraulic control packer pressure valve
CN111005700B (en) * 2018-10-08 2021-11-30 中国石油化工股份有限公司 Quick-release hydraulic control packer and construction method
CN111005700A (en) * 2018-10-08 2020-04-14 中国石油化工股份有限公司 Quick-release hydraulic control packer and construction method
CN110485961B (en) * 2019-08-14 2021-08-13 中国石油化工股份有限公司 Hydraulic shaping pipe column and casing pipe shaping process
CN110485961A (en) * 2019-08-14 2019-11-22 中国石油化工股份有限公司 A kind of hydraulic shaping tubing string and casing swage technique
CN110836104B (en) * 2019-11-28 2021-09-24 中国石油集团川庆钻探工程有限公司 Bidirectional slip hydraulic permanent packer
CN110905439A (en) * 2019-11-28 2020-03-24 中国石油集团川庆钻探工程有限公司 Integrated downhole operation tool based on bidirectional slip hydraulic permanent packer
CN110836104A (en) * 2019-11-28 2020-02-25 中国石油集团川庆钻探工程有限公司 Bidirectional slip hydraulic permanent packer
CN110905439B (en) * 2019-11-28 2022-03-01 中国石油集团川庆钻探工程有限公司 Integrated downhole operation tool based on bidirectional slip hydraulic permanent packer
CN111997564A (en) * 2020-08-04 2020-11-27 中国石油化工股份有限公司 Integrative water-plugging pipe column of looking for of bottom block and pump seal moves about
CN111997564B (en) * 2020-08-04 2022-07-19 中国石油化工股份有限公司 Integrative water-plugging pipe column of looking for of bottom block and pump seal moves about
CN112012668A (en) * 2020-10-12 2020-12-01 西南石油大学 Deepwater oil-gas well completion operation pipe string releasing, plugging and shearing integrated device
CN112012668B (en) * 2020-10-12 2021-05-04 西南石油大学 Deepwater oil-gas well completion operation pipe string releasing, plugging and shearing integrated device

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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: 20110112

Termination date: 20170613

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