CN102733776B - Fishable tubing plug - Google Patents

Fishable tubing plug Download PDF

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Publication number
CN102733776B
CN102733776B CN201210249456.2A CN201210249456A CN102733776B CN 102733776 B CN102733776 B CN 102733776B CN 201210249456 A CN201210249456 A CN 201210249456A CN 102733776 B CN102733776 B CN 102733776B
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CN
China
Prior art keywords
core bar
main
push rod
adapter sleeve
slips
Prior art date
Application number
CN201210249456.2A
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Chinese (zh)
Other versions
CN102733776A (en
Inventor
马中原
Original Assignee
马中原
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Publication date
Application filed by 马中原 filed Critical 马中原
Priority to CN201210249456.2A priority Critical patent/CN102733776B/en
Publication of CN102733776A publication Critical patent/CN102733776A/en
Application granted granted Critical
Publication of CN102733776B publication Critical patent/CN102733776B/en

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Abstract

The invention relates to a fishable tubing plug which comprises an upper joint (1), a main body (2), a slip (3), an upper spacer pad (4), an upper rubber cylinder (5), a spacer sleeve (6), a lower rubber cylinder (7), a lower spacer pad (8), a connection sleeve (9), a bottom plug (10), a fishing head (12), an ejector rod (13) and a core rod (14), wherein when the ejector rod (13) goes downward relative to the core rod (14), the main body (2) and the core rod (14) can be axially separated so that a slider (16) releases limitation on the slip (3) through the core rod (14) to realize the fishing. The fishable tubing plug provided by the invention is convenient to use, and can seal an oil pipe and take the plug out of the oil pipe as necessary for water injection and other operations. Through the fishable tubing plug, the operation in an oil field is facilitated, the working efficiency is improved, the working time is saved, and reversible operation of oil pipe plugging can be realized, namely that the tubing plug can be taken out as necessary after being thrown into the oil pipe, thus the problems in production are effectively solved.

Description

Salvagable tubing plug

Technical field

The present invention relates to petroleum tool, be specifically related to a kind of tubing plug.

Background technology

In well preventing spraying operation process, in order to preserve strata pressure and protection of the environment, need to stop up oil pipe.Although the tubing plug using at present can solve the problem of stopping up in oil pipe preferably, this operation is irreversible.Once in oil pipe, just can not take out under tubing plug, this just causes in real work very inconvenient sometimes again.For example: at replacing well head component, complete after replacing, and in well workover process, owing to can not taking out blanking plug, again water filling.

Summary of the invention

The object of this invention is to provide the salvagable tubing plug that is a kind ofly easy to use, not only can oil pipe has been carried out shutoff but also can have been taken out from oil pipe.

Technical solution of the present invention is: it comprises top connection, main body, slips, upper dottle pin, upper packing element, spacer, lower rubber cylinder, lower dottle pin, adapter sleeve and the end, are stifled, block up and be connected with the lower end of adapter sleeve by screw thread at the end, lower dottle pin, lower rubber cylinder, spacer and upper packing element are positioned at successively from bottom to top the end and block square set and be contained on adapter sleeve, upper dottle pin be positioned at packing element top and by thread set on adapter sleeve, the upper end of adapter sleeve has been threaded connection joint, the upper end of joint is connected with the lower end of main body by screw thread, each slips is slidably mounted on respectively on the dovetail slideway in main body, the upper end of main body is connected with the lower end of top connection by screw thread, it also comprises drags for head, push rod, core bar, push rod stage clip, slide block, sheath, locking steel ball and lower core bar, the lower end of dragging for head is connected with the upper end of core bar by screw thread, the epimere slip cap of push rod be contained in drag in head, the upper end of push rod protrudes from the upper surface of dragging for head, the hypomere of push rod is sleeved in core bar upper end, push rod stage clip be positioned at core bar and be sleeved on the hypomere of push rod, upper and lower end top, outer shroud platform lower surface that the top, upper end of push rod stage clip is pressed in push rod middle part is pressed on core bar inner face, drag for head and core bar and slide from the top down and be inserted in the through hole of top connection and main body, slide block is arranged on the below of main body internal slip, and each slide block is provided with the outer inclined-plane matching with slips and the interior inclined-plane matching with the plagiocephaly of core bar bottom, the upper end of lower core bar is connected with the lower end of core bar by screw thread, the epimere of lower core bar is positioned at main body and joint, hypomere slip cap are contained in adapter sleeve and coordinate with adapter sleeve slipper seal, and the adapter sleeve sidewall between lower rubber cylinder and spacer is provided with the pressure compensation opening that is positioned at top, lower core bar lower surface, locking steel ball is arranged between the steel ball inner groove and the steel ball hole on core bar wall in main body, main body is axially connected with core bar and is subject to the outer shroud platform of push rod spacing, thereby can make when push rod is descending with respect to core bar between main body and core bar axially to throw off removes slide block by core bar the restriction effect of slips is realized and can be dragged for, on core bar, be radially provided with and match, can drive bailing in main body to play the bearing pin of blanking plug with the axial long hole in main body.

Technique effect of the present invention is: it is easy to use, not only can oil pipe have been carried out shutoff but also can when needed blanking plug have been taken out from oil pipe, so that other operation such as water filling, and oil pipe all need not be tripped out to blanking plug dismounting again from down-hole.Use it to be more conducive to oil field operation and increasing work efficiency, save the working time, make to stop up oil pipe realizes can inverse operation, after dropping into blanking plug, can when needed tubing plug be taken out, effectively solve the problem in producing.

accompanying drawing explanation

Accompanying drawing is the axial sectional view of the embodiment of the present invention.

The specific embodiment

As shown in drawings, it comprises top connection 1, main body 2, slips 3, upper dottle pin 4, upper packing element 5, spacer 6, lower rubber cylinder 7, lower dottle pin 8, adapter sleeve 9 and the end stifled 10, the end stifled 10, is connected with the lower end of adapter sleeve 9 by screw thread, lower dottle pin 8, lower rubber cylinder 7, spacer 6 and upper packing element 5 are positioned at successively from bottom to top stifled 10 tops, the end and are sleeved on adapter sleeve 9, upper dottle pin 4 be positioned at packing element 5 tops and by thread set on adapter sleeve 9, the upper end of adapter sleeve 9 has been threaded connection joint 11, the upper end of joint 11 is connected with the lower end of main body 2 by screw thread, each slips 3 is slidably mounted on respectively on the dovetail slideway in main body 2, the upper end of main body 2 is connected with the lower end of top connection 1 by screw thread, it also comprises drags for 12, push rod 13, core bar 14, push rod stage clip 15, slide block 16, locking steel ball 17 and lower core bar 19, dragging for a lower end of 12 is connected with the upper end of core bar 14 by screw thread, the epimere slip cap of push rod 13 is contained in and drags in 12, the upper end of push rod 13 protrudes from a upper surface of dragging for 12, the hypomere of push rod 13 is sleeved in core bar 14 upper ends, push rod stage clip 15 is positioned at core bar 14 and is sleeved on the hypomere of push rod 13, the top, upper end of push rod stage clip 15 is pressed on the outer shroud platform lower surface at push rod 13 middle parts, top, lower end is pressed on core bar 14 inner faces, drag for 12 and core bar 14 slide from the top down and be inserted in the through hole of top connection 1 and main body 2, slide block 16 is arranged on the below of main body 2 internal slips 3, and each slide block 16 is provided with the outer inclined-plane matching with slips 3 and the interior inclined-plane matching with the plagiocephaly of core bar 14 bottoms, the upper end of lower core bar 19 is connected with the lower end of core bar 14 by screw thread, the epimere of lower core bar 19 is positioned at main body 2 and joint 11, hypomere slip cap are contained in adapter sleeve 9 and coordinate with adapter sleeve 9 slipper seals, and adapter sleeve 9 sidewalls between lower rubber cylinder 7 and spacer 6 are provided with the pressure compensation opening that is positioned at lower core bar 19 tops, lower surface, locking steel ball 17 is arranged between the steel ball inner groove and the steel ball hole on core bar 14 walls in main body 2, main body 2 is axially connected with core bar 14 and is subject to the outer shroud platform of push rod 13 spacing, thereby push rod 13 can make when descending with respect to core bar 14 between main body 2 and core bar 14 axially to throw off and by core bar 14, slide block 16 be removed the restriction effect of slips 3 is realized and can be dragged for, on core bar 14, be radially provided with the axial long hole in main body 2 and match, can drive bailing in main body 2 to play the bearing pin 18 of blanking plug.

Pressure compensation opening can make after lower core bar 19 is up with respect to adapter sleeve 9 at the end stifled 10 and adapter sleeve 9 space outerpaces between lower rubber cylinder 7 and spacer 6 are conducted, thereby reduces to salvage difficulty.Fishing tool pushes push rod 13 compression push rod stage clips 15 from top 12 descending with respect to dragging for, and can make to lock steel ball 17 and come off and make the axial locking action releasing between main body 2 and core bar 14.After core bar 14 is up with respect to main body 2, can make the interior receipts of slide block 16 remove and make itself and tube inner wall disengagement realize and can drag for the restriction of slips 3.

The sheath 20 that the slide outside that main body 2 is installed slide block 16 and slips 3 positions is set with and can slides up and down with slips 3, sidewall is provided with slips through hole.In main body 2 by screw thread be provided be positioned at sheath 20 below, can limit the standby cap 21 of sheath 20 down slidings.On the outer wall that the upper and lower core bar 19 of outer wall and adapter sleeve 9 middle parts that lower core bar 19 and adapter sleeve 9 upper ends are sealed and matched are mutually sealed and matched mutually, be respectively equipped with two seals circle 22.

Operating principle of the present invention:

1, drop into: it is stifled that salvagable tubing plug of the present invention can adopt two kinds of methods to throw, both can with the method for pressurizeing, act on lower rubber cylinder 7 with pump truck salvagable tubing plug is sent into the position that oil pipe needs shutoff, also can be sent into the position that needs shutoff with sucker rod.Be sent to after appointed part, oil pipe bottom pressure under the effect of packing element 5, the outer Zhang Zihang grappling of the up promotion slips 3 of main body 2, can carry out workover treatment.

2, pull out: do not needing operation, in the time of need to taking out blanking plug, can pass through winch wire or other modes, the special use fisher of weighing anchor is sent into appointed part, after salvagable tubing plug docking, first push push rod 13 the interior receipts of slips 3 thrown off blanking plug, then on mention anchor fisher, can and ground be proposed, complete operation by the de-plugging of salvagable tubing plug.

Claims (4)

1. salvagable tubing plug, it comprises top connection (1), main body (2), slips (3), upper dottle pin (4), upper packing element (5), spacer (6), lower rubber cylinder (7), lower dottle pin (8), (10) are blocked up at adapter sleeve (9) and the end, it is characterized in that: stifled (10) are connected with the lower end of adapter sleeve (9) by screw thread at the end, lower dottle pin (8), lower rubber cylinder (7), spacer (6) and upper packing element (5) are positioned at successively from bottom to top stifled (10) top, the end and are sleeved on adapter sleeve (9), upper dottle pin (4) be positioned at packing element (5) top and by thread set on adapter sleeve (9), the upper end of adapter sleeve (9) has been threaded connection joint (11), the upper end of joint (11) is connected with the lower end of main body (2) by screw thread, each slips (3) is slidably mounted on respectively on the dovetail slideway in main body (2), the upper end of main body (2) is connected with the lower end of top connection (1) by screw thread, it also comprises drags for head (12), push rod (13), core bar (14), push rod stage clip (15), slide block (16), locking steel ball (17) and lower core bar (18), the lower end of dragging for head (12) is connected with the upper end of core bar (14) by screw thread, the epimere slip cap of push rod (13) is contained in and drags in head (12), the upper end of push rod (13) protrudes from the upper surface of dragging for head (12), the hypomere of push rod (13) is sleeved in core bar (14) upper end, push rod stage clip (15) is positioned at core bar (14) and is sleeved on the hypomere of push rod (13), the top, upper end of push rod stage clip (15) is pressed on the outer shroud platform lower surface at push rod (13) middle part, top, lower end is pressed on core bar (14) inner face, dragging for head (12) and core bar (14) slides from the top down and is inserted in the through hole of top connection (1) and main body (2), slide block (16) is arranged on the below of main body (2) internal slip (3), and each slide block (16) is provided with the outer inclined-plane matching with slips (3) and the interior inclined-plane matching with the plagiocephaly of core bar (14) bottom, the upper end of lower core bar (19) is connected with the lower end of core bar (14) by screw thread, the epimere of lower core bar (19) is positioned at main body (2) and joint (11), hypomere slip cap are contained in adapter sleeve (9) and coordinate with adapter sleeve (9) slipper seal, and adapter sleeve (9) sidewall between lower rubber cylinder (7) and spacer (6) is provided with the pressure compensation opening that is positioned at top, lower core bar (19) lower surface, locking steel ball (17) is arranged between the steel ball inner groove and the steel ball hole on core bar (14) wall in main body (2), make main body (2) axially be connected with core bar (14) and be subject to the outer shroud platform of push rod (13) spacing, push rod (13) can make when descending with respect to core bar (14) axially to throw off between main body (2) and core bar (14), thereby by core bar (14), slide block (16) being removed realizes and can drag for the restriction effect of slips (3), on core bar (14), be radially provided with the axial long hole in main body (2) and match, can drive the upper bailing of main body (2) to play the bearing pin (18) of blanking plug.
2. salvagable tubing plug as claimed in claim 1, it is characterized in that described main body (2) install the slide outside of slide block (16) and slips (3) position be set with can slide up and down with slips (3), sheath (20) that sidewall is provided with slips through hole.
3. salvagable tubing plug as claimed in claim 2, it is characterized in that described main body (2) upper by screw thread be provided be positioned at sheath (20) below, can limit the standby cap (21) of sheath (20) down sliding.
4. salvagable tubing plug as claimed in claim 1, is characterized in that being respectively equipped with two seals circle (22) on outer wall that the upper and lower core bar of outer wall (19) that described lower core bar (19) and adapter sleeve (9) upper end be sealed and matched mutually and adapter sleeve (9) middle part be sealed and matched mutually.
CN201210249456.2A 2012-07-19 2012-07-19 Fishable tubing plug CN102733776B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210249456.2A CN102733776B (en) 2012-07-19 2012-07-19 Fishable tubing plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210249456.2A CN102733776B (en) 2012-07-19 2012-07-19 Fishable tubing plug

Publications (2)

Publication Number Publication Date
CN102733776A CN102733776A (en) 2012-10-17
CN102733776B true CN102733776B (en) 2014-08-13

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106401521B (en) * 2016-10-27 2019-01-04 新疆华油油气工程有限公司 Preset plugging device and excessively electric pump well testing responding curve of well plugging device
CN106437648A (en) * 2016-12-21 2017-02-22 牡丹江博实石油机械科技有限公司 Zero leakage loss flow regulating and blocking device
CN106437604B (en) * 2016-12-21 2019-01-04 牡丹江博实石油机械科技有限公司 Leak stopping seal section
CN109339733B (en) * 2018-11-29 2020-07-28 江苏新彩阳机电技术有限公司 Small-diameter hanging blanking plug

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046006A (en) * 1975-07-09 1977-09-06 Alex Dufrene Tubing plug apparatus for performing down-hole pressure tests
CN201756939U (en) * 2010-08-03 2011-03-09 北京托普威尔石油技术服务有限公司 Mechanical releasing tubing plug
CN201756941U (en) * 2010-08-13 2011-03-09 北京托普威尔石油技术服务有限公司 Mechanical releasing shallow-shaft tubing plug
CN201843567U (en) * 2010-09-14 2011-05-25 马中原 Tubing plug capable of passing small hole
CN201915896U (en) * 2010-12-31 2011-08-03 中国石油天然气集团公司 Cone release oil pipe blanking plug
CN201915900U (en) * 2010-12-31 2011-08-03 中国石油天然气集团公司 Cement boosting type tubing plug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046006A (en) * 1975-07-09 1977-09-06 Alex Dufrene Tubing plug apparatus for performing down-hole pressure tests
CN201756939U (en) * 2010-08-03 2011-03-09 北京托普威尔石油技术服务有限公司 Mechanical releasing tubing plug
CN201756941U (en) * 2010-08-13 2011-03-09 北京托普威尔石油技术服务有限公司 Mechanical releasing shallow-shaft tubing plug
CN201843567U (en) * 2010-09-14 2011-05-25 马中原 Tubing plug capable of passing small hole
CN201915896U (en) * 2010-12-31 2011-08-03 中国石油天然气集团公司 Cone release oil pipe blanking plug
CN201915900U (en) * 2010-12-31 2011-08-03 中国石油天然气集团公司 Cement boosting type tubing plug

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Effective date of registration: 20200730

Address after: 157000 Heilongjiang District, Mudanjiang City, Dongan Province East seven road Xin'an Street Woodworking Machinery Factory

Patentee after: Mudanjiang Jinheng Petroleum Machinery Technology Co.,Ltd.

Address before: 157000 No. 308 peony street, Xi'an District, Heilongjiang, Mudanjiang

Patentee before: Ma Zhongyuan

TR01 Transfer of patent right