CN201908601U - Sealing left hand fishing spear - Google Patents

Sealing left hand fishing spear Download PDF

Info

Publication number
CN201908601U
CN201908601U CN2010206851758U CN201020685175U CN201908601U CN 201908601 U CN201908601 U CN 201908601U CN 2010206851758 U CN2010206851758 U CN 2010206851758U CN 201020685175 U CN201020685175 U CN 201020685175U CN 201908601 U CN201908601 U CN 201908601U
Authority
CN
China
Prior art keywords
profile
fishing spear
rod
hand fishing
tooth axle
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
CN2010206851758U
Other languages
Chinese (zh)
Inventor
颜生鹏
樊国禄
叶光辉
盛国青
李永贵
奎万仓
樊启银
袁得芳
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 CN2010206851758U priority Critical patent/CN201908601U/en
Application granted granted Critical
Publication of CN201908601U publication Critical patent/CN201908601U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

The utility model discloses a sealing left hand fishing spear, which is applied to fish objects falling into a well in the oil well repairing operation. Threads are formed at the lower end of a spear pole at the lower end of the conventional left hand fishing spear body; the lower end of the spear pole is in threaded connection with a cylindrical connecting rod; the lower end of the connecting rod is in threaded connection with a toothed mandrel; a cylindrical outer step is arranged at the upper end of the toothed mandrel; annular sealing rubber is sleeved on the step of the toothed mandrel and is fixed between the connecting rod and the toothed mandrel; and water holes are respectively formed on the connecting rod and the toothed mandrel. The sealing left hand fishing spear has the beneficial effects that objects can be fished, backed off and released from inner cavities of the objects falling into the well by the traditional left hand fishing spear and the annual hollow well cleaning at the bottoms of the falling objects can be also realized.

Description

The sealing left hand fishing spear
Technical field
The utility model relates to petroleum well workover operation fishing tool, particularly a kind of fishing spear, be a kind of from the trouble of lost tool in hole inner chamber salvage, back-off and can discharge the sealing left hand fishing spear of junk.
Background technology
Left hand fishing spear be from the trouble of lost tool in hole inner chamber salvage, back-off and can discharge a kind of fishing tool of junk, and can carry out circulation well cleanup.
At present, the left hand fishing spear that use in the oil field mainly is made of parts such as top connection, lance bar, spline housing, limited block, dog screw, slips.The lance bar of this class left hand fishing spear lower end has been the effect of guide shoe, and diameter is slightly less than is salvaged tubulose junk internal diameter, salvage by the slip swelling or unclamp fish relatively on its conical surface of top slips, and by key and keyway carry-over moment, the forward and backward back-off.But can not seal fully between existing left hand fishing spear slips and the junk inner chamber, the turn on pump circulation time can only carry out well-flushing to fish end face upper annulus, greatly discharge capacity or at all can't carry out well-flushing, unfreezing, back-off to annular space bottom the junk.
The utility model content
The purpose of this utility model is: a kind of sealing left hand fishing spear is provided, lower end at conventional left hand fishing spear connects stripper rubber, realize former left hand fishing spear from the trouble of lost tool in hole inner chamber salvage, back-off and when can discharge the function of junk, can also realize that junk bottom annular space carries out well-flushing.
The technical solution adopted in the utility model is: the sealing left hand fishing spear, mainly by conventional left hand fishing spear body, connecting rod, stripper rubber and profile of tooth axle are formed, wherein conventional left hand fishing spear body is by top connection, the lance bar, spline housing, limited block, dog screw, slips is formed, it is characterized in that: there is screw thread lance bar lower end, conventional left hand fishing spear body lower end, screw thread is connected with cylinder bodily form connecting rod in lance bar lower end, the profile of tooth axle is threaded in the lower end of connecting rod, in profile of tooth axle upper end step outside the cylinder bodily form is arranged, the ring packing rubber sleeve is on the step of profile of tooth axle, and stripper rubber is fixed between connecting rod and the profile of tooth axle.Connecting rod and profile of tooth axle have hydrophthalmia (centre bore), and promptly conventional left hand fishing spear body has the hydrophthalmia of perforation to the center of profile of tooth axle.
The connecting rod diameter is between 50~55mm.The stripper rubber maximum outside diameter is between 58~63mm, and stripper rubber length is between 30~40mm.Profile of tooth axle maximum outside diameter is 58mm.
The lower end of profile of tooth axle is a taper seat, and toothed projections is arranged on taper seat.
The beneficial effects of the utility model: the utility model sealing left hand fishing spear, can realize former left hand fishing spear from the trouble of lost tool in hole inner chamber salvage, back-off and can discharge junk, can also realize that annular space carries out well-flushing bottom the junk.In the well that salvaging is shaked out seriously, incrustation scale is more in the junk, turn on pump built the pressure by force when left hand fishing spear descended, after suppressing out, carry out the cleaning of big discharge capacity in the water column pipe that from hydrophthalmia, sprays, a large amount of silt particles is gone into the well from the pipe ground swell, in the left hand fishing spear body wedging annular junk spare, salvaged during trip-out.After the tubing string unfreezing for smallclothes junk card, circulation well cleanup limit, limit pulls out of hole, and solves because of returning the too small difficult problem of required discharge capacity on the smallclothes junk.Extension bar and profile of tooth axle, are dismantled and are continued to use after connecting portion is changed stripper rubber if stripper rubber damages for being threaded.
Description of drawings
Fig. 1 is the utility model sealing left hand fishing spear structural profile schematic diagram.
Among the figure, 1-left hand fishing spear body, 2-connecting rod, 3-stripper rubber, 4-profile of tooth axle, 5-hydrophthalmia.
The specific embodiment
Embodiment 1: with a sealing left hand fishing spear is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model sealing left hand fishing spear mainly is made up of conventional left hand fishing spear body 1, connecting rod 2, stripper rubber 3 and profile of tooth axle 4.Wherein conventional left hand fishing spear body 1 is made up of top connection, lance bar, spline housing, limited block, dog screw, slips.
There is screw thread lance bar lower end, conventional left hand fishing spear body 1 lower end, and screw thread is connected with cylinder bodily form connecting rod 2 in lance bar lower end, and 2 body diameters of connecting rod are 54mm.The profile of tooth axle 4 that is threaded in the lower end of connecting rod 2, profile of tooth axle 4 external diameters are 58mm.In profile of tooth axle 4 upper ends step outside the cylinder bodily form is arranged, ring packing rubber 3 is enclosed within on the step of profile of tooth axle 4, and stripper rubber 3 is fixed between connecting rod 2 and the profile of tooth axle 4.Stripper rubber 3 maximum outside diameters are 63mm, and stripper rubber 3 length are 35mm, can bearing strength 25MPa.Connecting rod 2 and profile of tooth axle 4 have hydrophthalmia 5, and promptly conventional left hand fishing spear body 1 has the hydrophthalmia 5 of perforation to the center of profile of tooth axle 4.
The lower end of profile of tooth axle 4 is a taper seat, and the axial tooth profile projection is arranged on taper seat.

Claims (3)

1. one kind seals left hand fishing spear, mainly by conventional left hand fishing spear body (1), connecting rod (2), stripper rubber (3) and profile of tooth axle (4) are formed, wherein conventional left hand fishing spear body (1) is by top connection, the lance bar, spline housing, limited block, dog screw, slips is formed, it is characterized in that: there is screw thread lance bar lower end, conventional left hand fishing spear body (1) lower end, screw thread is connected with cylinder bodily form connecting rod (2) in lance bar lower end, profile of tooth axle (4) is threaded in the lower end of connecting rod (2), in profile of tooth axle (4) upper end step outside the cylinder bodily form is arranged, ring packing rubber (3) is enclosed within on the step of profile of tooth axle (4), and stripper rubber (3) is fixed between connecting rod (2) and the profile of tooth axle (4), and connecting rod (2) and profile of tooth axle (4) have hydrophthalmia (5).
2. sealing left hand fishing spear according to claim 1 is characterized in that: connecting rod (2) diameter is between 50~55mm; Stripper rubber (3) maximum outside diameter is between 58~63mm, and stripper rubber (3) length is between 30~40mm; Profile of tooth axle (4) maximum outside diameter is 58mm.
3. sealing left hand fishing spear according to claim 1 is characterized in that: the lower end of profile of tooth axle (4) is a taper seat, and toothed projections is arranged on taper seat.
CN2010206851758U 2010-12-17 2010-12-17 Sealing left hand fishing spear Expired - Lifetime CN201908601U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010206851758U CN201908601U (en) 2010-12-17 2010-12-17 Sealing left hand fishing spear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010206851758U CN201908601U (en) 2010-12-17 2010-12-17 Sealing left hand fishing spear

Publications (1)

Publication Number Publication Date
CN201908601U true CN201908601U (en) 2011-07-27

Family

ID=44300804

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010206851758U Expired - Lifetime CN201908601U (en) 2010-12-17 2010-12-17 Sealing left hand fishing spear

Country Status (1)

Country Link
CN (1) CN201908601U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103912232A (en) * 2014-04-02 2014-07-09 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Returnable tubing sealing salvage gear
CN104747112A (en) * 2013-12-31 2015-07-01 贵州高峰石油机械股份有限公司 Method for fishing fishes buried by silt and fishing spear of method
CN106368642A (en) * 2016-08-31 2017-02-01 吉林大学 Deep well sleeve fishing device provided with automatic telescoping mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104747112A (en) * 2013-12-31 2015-07-01 贵州高峰石油机械股份有限公司 Method for fishing fishes buried by silt and fishing spear of method
CN103912232A (en) * 2014-04-02 2014-07-09 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Returnable tubing sealing salvage gear
CN106368642A (en) * 2016-08-31 2017-02-01 吉林大学 Deep well sleeve fishing device provided with automatic telescoping mechanism
CN106368642B (en) * 2016-08-31 2018-08-31 吉林大学 A kind of Deep Well Casings fisher with auto-telescopic mechanism

Similar Documents

Publication Publication Date Title
CN201908601U (en) Sealing left hand fishing spear
CN201723190U (en) Unconsolidated deposit hydraulic pressure type sealed coring tool
CN105781483B (en) A kind of recoverable hydraulic packer
CN110295867A (en) Multilevel hierarchy pressure break degradable packer and fracturing string
CN201068781Y (en) Down-hole fixed pressure opening valve for injection, extraction and washing
CN203742506U (en) Forcing float collar type prestressing force well cementation ground anchor assembly
CN201705258U (en) Fishable bottom plug with elastic claw for expansion pipe
CN206468318U (en) Hydraulic force increasing device and underground hydraulic pressure reinforcement release device
CN201705216U (en) Clamping spring type fishable bottom plug for expansion pipe
CN203275120U (en) Novel hydraulic piston sampling tool
CN201544128U (en) Hydraulic sand-blasting cutter
CN202284458U (en) Sealed backoff fishing spear
CN201794527U (en) Casing float collar
CN202300216U (en) Connecting device for deblocking down-hole string
CN202249882U (en) Hydraulic returnable slip overshot
CN205503076U (en) Down -hole junk slip socket
CN201874505U (en) Multifunctional milling fishing tool
CN201908600U (en) Through-center die collar
CN212003086U (en) Pressurizing joint of pressurizing type coring tool
CN204532203U (en) A kind of coiled tubing slip-type fishing socket
CN201318149Y (en) Unidirectional inner blowout control pump-out type blanking plug
CN107542422A (en) The milling method and combined type junk mill and application method of different hole diameters
CN208137894U (en) The small fishing junk device in underground
CN212428706U (en) Large-drift-diameter treatment-free underground high-pressure temporary plugging device
CN202202823U (en) Track type safety joints

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20110727