CN202108439U - Releasing tool - Google Patents

Releasing tool Download PDF

Info

Publication number
CN202108439U
CN202108439U CN2011201516870U CN201120151687U CN202108439U CN 202108439 U CN202108439 U CN 202108439U CN 2011201516870 U CN2011201516870 U CN 2011201516870U CN 201120151687 U CN201120151687 U CN 201120151687U CN 202108439 U CN202108439 U CN 202108439U
Authority
CN
China
Prior art keywords
central tube
annular
spring
inwall
releasing
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 - Lifetime
Application number
CN2011201516870U
Other languages
Chinese (zh)
Inventor
任国富
王效明
王治国
赵广民
赵粉霞
张丽娟
冯长青
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 CN2011201516870U priority Critical patent/CN202108439U/en
Application granted granted Critical
Publication of CN202108439U publication Critical patent/CN202108439U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a releasing tool which is applied to the technical field of oilfield well repairing constructions. In the releasing tool, an upper joint is connected with a central tube by screw thread; an outer cylinder is sleeved at the upper end of the central tube; a compression spring is arranged between the outer cylinder and the central tube; 3-4 rectangular openings are evenly arranged at the lower end of the outer cylinder; a rectangular toque fixture block is arranged in each opening; a spring seat is fixed on an inwall of each toque fixture block through inner hexagonal screw nails; an annular piston cylinder is further sleeved on the central tube; a salvaging cylinder is sleeved outside the piston cylinder; the piston cylinder is connected with an annular tightening sleeve; the upper end of the tightening sleeve is connected with the central tube through a shear pin bolt; a fixture claw seat, an annular spring seat and a spring are sleeved on the central tube; fixture claws are positioned in an annular concave groove on an inwall of the salvaging cylinder; and the upper end of a lower joint supports the lower parts of the fixture claws. The releasing tool has the effects of realizing two releasing methods, i.e. hydraulic releasing and mechanical releasing, can meet the requirement of reliable releasing in the field of oil gas well repairing, and overcomes the shortcomings of unreliable releasing caused by the action of merely rotating or downward pressing.

Description

Releasing tool
Technical field
The utility model relates to oil field well workover technical field of construction, gives up in particularly a kind of down-hole, is to give up in a kind of down-hole of throwing off function of can under two kinds of conditions, realizing.
Background technology
At present, domestic existing is given up and is mainly contained that left-hand thread is given up, hydraulic pressure is given up and machinery is given up three types, and the mode of giving up is single, in case give up lost efficacy after, the risk that existence can not be given up.
Chinese patent 02235422.0 discloses a kind of limited pressure device of giving up; This is given up and directly implements to give up through hydraulic pressure, and has the pressure limiting of setting function, plays the effect of protecting packer packing element; Be mainly used in the oilwell water shutoff field, be connected in oilwell water shutoff and give up in the tubing string.
Chinese patent 02211753.9 discloses a kind of Sand control joint, and this is given up to have solved fractured well and be prone to sand output well and is prone to water plugging string sand is buried, and causes and plays the problem of water plugging string difficulty next time.This is given up and is mainly used in the water injection well field.
Chinese patent 02213119.1 discloses a kind of down-hole mechanical and given up, and this does not need vehicle cooperations such as pump truck, and is low to the sealing performance requirement of tubing string.
The utility model content
The purpose of the utility model is: a kind of releasing tool is provided, adopts hydraulic pressure to give up with mechanical rotation, press down the two kinds of modes of giving up of giving up and satisfy the demand that oil well repairing operation is reliably given up.
The technical scheme that the utility model adopts is: releasing tool; Mainly by top connection, urceolus, compression spring, central tube, spring base, soket head cap screw, moment of torsion fixture block, go up sealing ring, piston rod, inlet opening, lower seal, fishing socket, shear pin, tighten cover, lock ring, circlip, spring base, spring, master jaw, claw, sealing ring, lower contact form; There is internal thread the upper end of top connection; It is characterized in that: there is internal thread the lower end in top connection; The lower end of top connection and central tube upper end is with urceolus through being threaded together in the upper end of central tube, and the compression spring is arranged in the annular space between urceolus and the central tube; There is the annular elastomeric spring abutment lower end of compression spring, and spring socket sleeve is on the central tube outer wall; The urceolus lower end is evenly distributed with 3~4 rectangle gap, and a rectangular moment of torsion fixture block is arranged respectively in gap, on the moment of torsion fixture block screw is arranged, and spring base is fixed on the inwall of moment of torsion fixture block through soket head cap screw;
On the central tube outer wall, also be with the annular piston cylinder, sealing ring on having on the inwall of piston rod upper end has inlet opening on central tube, can power fluid be provided for piston rod.On the bottom of inlet opening and outer wall, a ring-shaped step is arranged, lower seal is arranged at the lateral surface of ring-shaped step at central tube; Outside at piston rod is with fishing socket; In the annular space of piston rod between central tube and fishing socket; The lower end inner thread of piston rod is connected with annular and tightens cover, tightens between upper end and the central tube of cover to link together through shear pin; On central tube, be fixed with an annular lock ring, the lock ring outer wall has annular tooth, and lock ring outer wall annular tooth is relative with the annular tooth that tightens the cover inwall; Be with master jaw at central tube; Circlip for shaft is arranged at the top of master jaw, and an annular elastomeric spring abutment is arranged in the bottom of circlip, in the bottom, lower surface of annular elastomeric spring abutment spring is arranged; Spring housing is on the outer wall of master jaw, and the lower end of spring is on the ring-shaped step of the outside protrusion in master jaw lower end; There is claw the lower end of master jaw, and claw is in the annular groove of fishing socket inwall; Outer wall has screw thread in the lower end of central tube, fixing annular lower contact in the lower end of central tube, and the upper end of lower contact withstands on the bottom of claw; Between the lower contact outer wall, sealing ring is arranged at the fishing socket inwall, on the inwall of the lower end of fishing socket, the oil pipe internal thread is arranged.
The operating principle of novel releasing tool is consulted Fig. 1 and Fig. 2.Hydraulic pressure is given up: during well construction, its upper and lower side screw thread connects oil pipe respectively under this releasing tool, adopts the oil pipe pressuring method to give up; During the oil pipe pressurization, high-pressure fluid enters in the piston rod 9 from central tube inlet opening 10, and it is up to promote piston rod 9; Piston rod 9 promotion moment of torsion fixture blocks 7 and spring base 5 are up; Compression spring 3 when piston rod 9 is up, drives that to tighten cover 14 up with spring base 17 by compression; Spring base 17 runs into stopping of circlip 16 when up, and then it is up with cat's paw's seat 19 and cat's paw 20 to drive circlip 16.When cat's paw 20 is up, shrink with respect to urceolus 2, in the time of when being retracted to urceolus 2 fully in, disengaging between fishing socket 12 and the urceolus 2, realization hydraulic pressure is given up.Since the monodirectional locking effect of lock ring 15, not rollback expansion again after claw 20 shrinks.In order to prevent that mistake is given up under low-pressure, 3 shear pins 13 have been installed tightening between cover 14 and the central tube 4, have only after the central tube internal pressure reaches certain value, just cutting off, locking cover 14 pins 13, continue up.
During well construction, its upper and lower side screw thread connects oil pipe respectively under this releasing tool, when needs use mechanical system to give up; Need the top connection 1 earlier left-handed pin 13 of cutting off, make central tube 4 descending, urceolus 2 is up with respect to central tube 4; Piston rod 9 is up with respect to central tube 4, cut off shear pin 13 after, it is descending that central tube 4 drives lower contacts 22; Make claw 20 support in losing and shrink, break away between fishing socket 12 and the urceolus 2, thereby realization machinery is given up.Since the monodirectional locking effect of lock ring 15, not rollback expansion again after claw 20 shrinks.
The beneficial effect of the utility model: the utility model releasing tool, can realize that hydraulic pressure gives up and the machinery two kinds of modes of giving up of giving up.Satisfy the requirement of reliably giving up in oil gas well well workover field.The second, machinery is given up to adopt and is rotated the mode that afterwards presses down earlier, has effectively overcome insecure deficiency of giving up that simple rotation or pressing action cause.
Description of drawings
Fig. 1 is the utility model releasing tool the first half structural profile sketch map.
Fig. 2 is the utility model releasing tool the latter half structural profile sketch map.
Among the figure, the 1-top connection, the 2-urceolus, 3-compresses spring, 4-central tube, 5-spring base; The 6-soket head cap screw, 7-, moment of torsion fixture block 8-goes up sealing ring, 9-piston rod, 10-inlet opening, 11-lower seal; The 12-fishing socket, the 13-shear pin, 14-tightens cover, 15-lock ring, 16-circlip, 17-spring base; The 18-spring, 19-master jaw, 20-claw, 21-sealing ring, 22-lower contact.
The specific embodiment
Embodiment 1: with a releasing tool is example, and the utility model is done further explain.
The utility model releasing tool, mainly by top connection 1, urceolus 2, compression spring 3, central tube 4, spring base 5, soket head cap screw 6, moment of torsion fixture block 7, go up sealing ring 8, piston rod 9, inlet opening 10, lower seal 11, fishing socket 12, shear pin 13, tighten cover 14, lock ring 15, circlip 16, spring base 17, spring 18, master jaw 19, claw 20, sealing ring 21, lower contact 22 form.
Consult Fig. 1.There is internal thread the upper end of top connection 1.There is internal thread lower end in top connection 1, and the lower end of top connection 1 and central tube 4 upper ends are with urceolus 2 through being threaded together in central tube 4 outside upper ends, and the spring 3 of compression is arranged in the annular space between urceolus 2 and the central tube 4.There is annular elastomeric spring abutment 5 lower end of compression spring 3, and spring base 5 is enclosed within on central tube 4 outer walls; Urceolus 2 lower ends are evenly distributed with three rectangle gap, and a rectangular moment of torsion fixture block 7 is arranged respectively in gap, and two screws are arranged on the moment of torsion fixture block 7, through two soket head cap screws 6 spring base 5 are fixed on the inwall of moment of torsion fixture block 7.
On central tube 4 outer walls, also be with an annular piston cylinder 9, sealing ring 8 on having together on the piston rod 9 upper end inwalls, two have inlet opening 10 on central tube 4, and highly pressurised liquid gets in the piston rod 9 from inlet opening 10, promotes piston rod 9 motions.In the bottom of inlet opening 10 and a ring-shaped step arranged, lower seal 11 is arranged at the lateral surface of ring-shaped step on the outer wall of central tube 4.Be with cylindrical shape fishing socket 12 in the outside of piston rod 9.Fishing socket 12 tops are evenly distributed with three rectangle gap.Three rectangle gap of three rectangle gap and urceolus 2 lower ends at fishing socket 12 tops are relative.Moment of torsion fixture block 7 is in urceolus 2 lower end rectangle gap and fishing socket 12 top rectangle gap.In the annular space of piston rod 9 between central tube 4 and fishing socket 12.
Consult Fig. 2.The lower end inner thread of piston rod 9 is connected with annular and tightens cover 14, tightens between cover 14 upper end and the central tube 4 to link together through shear pin 13.On central tube 4, be fixed with an annular lock ring 15, lock ring 15 outer walls have annular tooth, and lock ring 15 outer wall annular tooth are relative with the annular tooth that tightens cover 14 inwalls.Be with master jaw 19 at central tube 4; Circlip for shaft 16 is arranged at the top of master jaw 19; An annular elastomeric spring abutment 17 is arranged in the bottom of circlip 16; The bottom, lower surface spring 18 is arranged, spring 18 is enclosed within on the outer wall of master jaw 19, the lower end of spring 18 is in master jaw 19 lower ends outwards on the ring-shaped step of protrusion.There are three claws 20 lower end of master jaw 19, and claw 20 is in the annular groove of fishing socket 12 inwalls.Outer wall has screw thread in the lower end of central tube 4, fixing annular lower contact 22 in the lower end of central tube 4, and the upper end of lower contact 22 withstands on the bottom of claw 20.Between lower contact 22 outer walls, sealing ring 21 is arranged at fishing socket 12 inwalls, on the inwall of the lower end of fishing socket 12, the oil pipe internal thread is arranged.

Claims (1)

1. releasing tool; Mainly by top connection (1), urceolus (2), compression spring (3), central tube (4), spring base (5), soket head cap screw (6), moment of torsion fixture block (7), go up sealing ring (8), piston rod (9), lower seal (11), fishing socket (12), shear pin (13), tighten cover (14), lock ring (15), circlip (16), spring base (17), spring (18), master jaw (19), claw (20), sealing ring (21), lower contact (22) form; There is internal thread the upper end of top connection (1); It is characterized in that: there is internal thread the lower end in top connection (1); The lower end of top connection (1) and central tube (4) upper end is through being threaded together; Be with urceolus (2) in the upper end of central tube 4, in the annular space between urceolus (2) and the central tube (4) compression spring (3) arranged; There is annular elastomeric spring abutment (5) lower end of compression spring (3), and spring base (5) is enclosed within on central tube (4) outer wall; Urceolus (2) lower end is evenly distributed with 3~4 rectangle gap, and a rectangular moment of torsion fixture block (7) is arranged respectively in gap, and the moment of torsion fixture block has screw on (7), through soket head cap screw (6) spring base (5) is fixed on the inwall of moment of torsion fixture block (7);
On central tube (4) outer wall, also be with annular piston cylinder (9); On the inwall of piston rod (9) upper end, last sealing ring (8) is arranged; Inlet opening (10) is arranged on central tube (4); In the bottom of inlet opening (10) and a ring-shaped step arranged, lower seal (11) is arranged at the lateral surface of ring-shaped step on the outer wall of central tube (4); Be with fishing socket (12) in the outside of piston rod (9); In the annular space of piston rod (9) between central tube (4) and fishing socket (12); The lower end inner thread of piston rod (9) is connected with annular and tightens cover (14), tightens between upper end and the central tube (4) of cover (14) to link together through shear pin (13); On central tube (4), be fixed with an annular lock ring (15), lock ring (15) outer wall has annular tooth, and lock ring (15) outer wall annular tooth is relative with the annular tooth that tightens cover (14) inwall; Be with master jaw (19) at central tube (4); Circlip for shaft (16) is arranged at the top of master jaw (19); In the bottom of circlip (16) an annular elastomeric spring abutment (17) is arranged; In the bottom, lower surface of annular elastomeric spring abutment (17) spring (18) is arranged, spring (18) is enclosed within on the outer wall of master jaw (19), and the lower end of spring (18) is on the ring-shaped step of the outside protrusion in master jaw (19) lower end; There is claw (20) lower end of master jaw (19), and claw (20) is in the annular groove of fishing socket (12) inwall; Lower end outer wall at central tube (4) has screw thread, the fixing annular lower contact (22) in the lower end of central tube (4), and the upper end of lower contact (22) withstands on the bottom of claw (20); Between lower contact (22) outer wall, sealing ring (21) is arranged at fishing socket (12) inwall, on the lower end inwall of fishing socket (12), the oil pipe internal thread is arranged.
CN2011201516870U 2011-05-13 2011-05-13 Releasing tool Expired - Lifetime CN202108439U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201516870U CN202108439U (en) 2011-05-13 2011-05-13 Releasing tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201516870U CN202108439U (en) 2011-05-13 2011-05-13 Releasing tool

Publications (1)

Publication Number Publication Date
CN202108439U true CN202108439U (en) 2012-01-11

Family

ID=45433875

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201516870U Expired - Lifetime CN202108439U (en) 2011-05-13 2011-05-13 Releasing tool

Country Status (1)

Country Link
CN (1) CN202108439U (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103422824A (en) * 2013-08-02 2013-12-04 奥瑞安能源国际有限公司 Feeding and releasing tool
CN104790893A (en) * 2015-02-12 2015-07-22 中国海洋石油总公司 Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture
CN104879078A (en) * 2014-03-02 2015-09-02 山东兆鑫石油工具有限公司 Releasing apparatus
CN105019846A (en) * 2014-04-29 2015-11-04 中国石油化工股份有限公司 Hydraulic releasing device
CN105525884A (en) * 2014-09-28 2016-04-27 中国石油化工集团公司 Pipe column feeding tool with double releasing mechanisms
CN105756595A (en) * 2014-12-17 2016-07-13 中国石油天然气股份有限公司 Releasing tool
CN105840126A (en) * 2016-06-21 2016-08-10 荆州市赛瑞能源技术有限公司 Linked-release hanger delivery tool
CN105863540A (en) * 2016-04-12 2016-08-17 中国石油天然气股份有限公司 Releasing sub assembly
CN108593202A (en) * 2018-04-28 2018-09-28 中国石油集团工程技术研究院有限公司 A kind of scaling method system for torque measurement

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103422824A (en) * 2013-08-02 2013-12-04 奥瑞安能源国际有限公司 Feeding and releasing tool
CN104879078A (en) * 2014-03-02 2015-09-02 山东兆鑫石油工具有限公司 Releasing apparatus
CN104879078B (en) * 2014-03-02 2017-06-06 山东兆鑫石油工具有限公司 A kind of releasing device
CN105019846A (en) * 2014-04-29 2015-11-04 中国石油化工股份有限公司 Hydraulic releasing device
CN105525884B (en) * 2014-09-28 2017-12-19 中国石油化工集团公司 A kind of tubing string running tool with double relieving mechanisms
CN105525884A (en) * 2014-09-28 2016-04-27 中国石油化工集团公司 Pipe column feeding tool with double releasing mechanisms
CN105756595A (en) * 2014-12-17 2016-07-13 中国石油天然气股份有限公司 Releasing tool
CN105756595B (en) * 2014-12-17 2019-07-05 中国石油天然气股份有限公司 Releasing tool
CN104790893A (en) * 2015-02-12 2015-07-22 中国海洋石油总公司 Feeding tool assembly for suspending packer used for horizontal well multi-sectional fracture
CN105863540A (en) * 2016-04-12 2016-08-17 中国石油天然气股份有限公司 Releasing sub assembly
CN105863540B (en) * 2016-04-12 2018-06-26 中国石油天然气股份有限公司 Back-off sub component
CN105840126A (en) * 2016-06-21 2016-08-10 荆州市赛瑞能源技术有限公司 Linked-release hanger delivery tool
CN108593202A (en) * 2018-04-28 2018-09-28 中国石油集团工程技术研究院有限公司 A kind of scaling method system for torque measurement
CN108593202B (en) * 2018-04-28 2021-05-28 中国石油天然气集团有限公司 Calibration method system for torque measurement

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20120111