CN203374238U - Integrated dust squeezing bridge plug capable of being taken out - Google Patents

Integrated dust squeezing bridge plug capable of being taken out Download PDF

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Publication number
CN203374238U
CN203374238U CN201320465281.9U CN201320465281U CN203374238U CN 203374238 U CN203374238 U CN 203374238U CN 201320465281 U CN201320465281 U CN 201320465281U CN 203374238 U CN203374238 U CN 203374238U
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CN
China
Prior art keywords
mandrel
sliding sleeve
lock
ring
cylinder
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Active
Application number
CN201320465281.9U
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Chinese (zh)
Inventor
白友国
朱苏青
冯恩山
李兴
廉冬
陈聪颖
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
Sinopec Jiangsu Oilfield Co
Original Assignee
China Petroleum and Chemical Corp
Sinopec Jiangsu Oilfield Co
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Priority to CN201320465281.9U priority Critical patent/CN203374238U/en
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Abstract

The utility model relates to an underground plugging tool for an oil well, in particular to an integrated dust squeezing bridge plug capable of being taken out. The dust squeezing bridge plug comprises an upper connector, a liquid cylinder, a piston mandrel, a pushing cylinder, an inserting pipe, a setting connector, a setting shear pin, a deblocking head, a lock ring, a deblocking shear pin, a lock block, a sand-prevention rubber sheet, a lock sleeve, a limiting ring, a cone body, a slip, a mandrel, a slip barrel, a sealing sleeve, a sliding sleeve mandrel, rubber barrels, a partitioning ring and an end cap. The upper end of the inserting pipe is in threaded connection with the lower end of the piston mandrel. The lower end of the inserting pipe is in threaded connection with the upper end of the sliding sleeve mandrel. The lower end of the sliding sleeve mandrel is in threaded connection with a backstop lock ring. A control sliding sleeve is connected in the sliding sleeve mandrel through a pin. A switch sliding sleeve is arranged between the sealing sleeve and the sliding sleeve mandrel. The switch sliding sleeve and the backstop lock ring are arranged in the end cap respectively. The mandrel is arranged on the outer side of the inserting pipe. The upper end of the mandrel is in threaded connection with the inserting pipe. The integrated dust squeezing bridge plug is stable in performance, bridge plug setting and dust squeezing working can be completed through one pipe column, and the bridge plug can be taken out for recycling after dust squeezing plugging working.

Description

Integrated retrievable bridge plug of cement squeeze
Technical field
The utility model relates to oil field down-hole plugging instrument, relates in particular to the structure of squeezing grey bridging plug.
Background technology
Squeezing grey bridging plug is mainly used in oil field development production formation testing, underground work, oil-gas Layer transformation, formation testing, notes and adopts in the work progress such as layer position adjustment, often need to carry out temporary blocking or permanent shutoff to oil, gas, water layer with the down-hole plugging instrument, sometimes, need the outer channelling of squeeze method shutoff perforated interval or squeeze method shutoff sleeve pipe to carry out in secondary well cementing operation work progress.
Existing oil field is carried out the squeeze method shutoff to oil, gas, water layer and is had following shortcoming by retrievable bridge plug of cement squeeze, need to first be lowered to tubing string that setting instrument is connected with bridging plug carries out bridging plug and sets, then trip out tubing string, be lowered to again intubation column, will under twice tubing string just can complete, the well workover cycle is longer, and operating expenses is higher; And propose in the process of setting instrument and lower intubate, may have the pit shaft sediment and fall in intubate bridging plug central tube, cause crowded grey intubate not insert and open bridging plug squeezing passage, cause well workover to be constructed unsuccessfully.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, and a kind of stable performance is provided, and the energy one-trip string completes bridging plug and sets, squeezes grey operation, can take out the integrated retrievable bridge plug of cement squeeze of recovery after crowded grey shutoff operation.
The purpose of this utility model is achieved in that integrated retrievable bridge plug of cement squeeze, comprise fluid cylinder (2), intubate (6), sliding sleeve mandrel (21), place top connection (1) in fluid cylinder (2), the lower end of top connection (1) the piston mandrel (3) that is threaded, piston mandrel (3) is set in the bottom of fluid cylinder (2), the lower end of fluid cylinder (2) connects pushing cylinder (5), the lower end of pushing cylinder (5) arranges and sets joint (7), the upper end that sets joint (7) connects solution end socket (9) by setting shear pin (8), connect and separate end socket (9) and be arranged on and set between joint (7) and intubate (6), lock ring (10) is set setting joint (7) and separate between end socket (9), connect the lower end of separating end socket (9) and pass through deblocking shear pin (11) connecting mandrel (18), between solution end socket (9) and mandrel (18), lock dog (12) is set, be nested with cone (16) on mandrel (18), slips (17), slips cylinder (19), cone (16) is arranged on the below of lock ring (10), the upper end of cone (16) with set joint (7) and be threaded, between cone (16) and mandrel (18), lock tube (14) is set, lock tube (14) is arranged on the below of lock dog (12), the outer sand control rubber (13) that arranges of cone (16), sand control rubber (13) is arranged on and sets between joint (7) and slips cylinder (19), between cone (16) and slips cylinder (19), spacing ring (15) is set, spacing ring (15) is threaded with the upper end of slips cylinder (19), the lower end seal with screwed joint cover (20) of mandrel (18), the lower end of sealing shroud (20) plug (26) that is threaded, be nested with at least two packing elements (22) outside sealing shroud (20), each packing element (22) is arranged between slips cylinder (19) and plug (26), spacer ring (24) is set respectively between adjacent two packing elements (22), and sealing shroud (20) and sliding sleeve mandrel (21) are separately positioned in plug (26), the upper end of described intubate (6) is threaded with the lower end of piston mandrel (3), the lower end of intubate (6) is threaded with the upper end of sliding sleeve mandrel (21), the lower end of sliding sleeve mandrel (21) the retaining lock ring (27) that is threaded, connect and control sliding sleeve (25) by pin in sliding sleeve mandrel (21), between sealing shroud (20) and sliding sleeve mandrel (21), switching sliding sleeve (23) is set, switching sliding sleeve (23) and retaining lock ring (27) are separately positioned in plug (26), described mandrel (18) is arranged on the outside of intubate (6), and the upper end of mandrel (18) is threaded with intubate (6).
The quantity of fluid cylinder of the present utility model (2) is four.
The utility model is by above design, by top connection (1), fluid cylinder (2), piston mandrel (3), O-ring seals (4), pushing cylinder (5), intubate (6), set joint (7), set shear pin (8), separate end socket (9) composition bridging plug and set assembly, by intubate (6), sliding sleeve mandrel (21), control sliding sleeve (25), retaining lock ring (27) forms bridging plug intubate assembly, by packing element (22), spacer ring (24) forms the bridging plug seal assembly, by cone (16), slips (17), slips cylinder (19) forms the bridging plug anchor, by separating end socket (9), lock dog (12), lock tube (14) forms bridging plug locking assembly.
During use, first integrated retrievable bridge plug of cement squeeze is lowered to the downhole designs position, suppress and make bridging plug set assembly work, set the slips anchoring that assembly promotes the bridging plug anchor, make again the packing element of bridging plug seal assembly enter duty, the lock ring of the assembly of bridging plug locking simultaneously is meshed with the saw-tooth thread of lock tube, the retrievable bridge plug of cement squeeze self-locking, when setting force surpasses the tension limit of cannelure on mandrel, mandrel is pulled off at the cannelure place, retrievable bridge plug of cement squeeze sets in the downhole designs position, the intubate assembly that now bridging plug sets assembly and is connected to its underpart separates with the bridging plug body, in the time of separately under the effect of tubing string internal pressure, controlling sliding sleeve goes downwards in the retaining lock ring, open in the crowded grey hole of intubate, now press down tubing string, the intubate assembly inserts the sliding sleeve of retrievable bridge plug of cement squeeze, open sliding sleeve and squeeze grey operation, after squeezing the grey end of job, the upper lifting pipe post is extracted the intubate assembly, after mortar setting, be lowered to the bridging plug unsealing tool and catch the solution sealing joint of retrievable bridge plug of cement squeeze, on carry the bridging plug unsealing tool, bridging plug locking assembly is disengaged locking, the slips of anchor is return, the packing element of seal assembly retraction, integrated retrievable bridge plug of cement squeeze deblocking, retrievable bridge plug of cement squeeze can be taken out and reclaim with the bridging plug unsealing tool.The high workload pressure reduction of this bridging plug can reach 70MPa..
The utility model energy one-trip string completes bridging plug and sets, squeezes grey operation, can take out recovery after squeezing grey shutoff operation, can be widely used in oil, gas, water layer and carry out in squeeze method shutoff job execution, but individual well is saved 40,000 yuan of operating costs, is constructed into power high.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
In figure, 1 top connection, 2 fluid cylinders, 3 piston mandrels, 4O shape sealing ring, 5 pushing cylinders, 6 intubate, 7 set joint, and 8 set shear pin, and 9 separate end socket, 10 lock rings, 11 deblocking shear pins, 12 lock dogs, 13 sand control rubber, 14 lock tubes, 15 spacing rings, 16 cones, 17 slips, 18 mandrels, 19 slips cylinders, 20 sealing shrouds, 21 sliding sleeve mandrels, 22 packing elements, 23 switching sliding sleeves, 24 spacer rings, 25 control sliding sleeve, 26 plugs, 27 retaining lock rings.
The specific embodiment
As shown in Figure 1, integrated retrievable bridge plug of cement squeeze, comprise four fluid cylinders 2 that connect successively, place top connection 1 in fluid cylinder 2, between top connection 1 and fluid cylinder 2, O-ring seals 4 is set, the lower end of the top connection 1 piston mandrel 3 that is threaded, piston mandrel 3 is set in the bottom of fluid cylinder 2, the lower end of piston mandrel 3 intubate 6 that is threaded.The lower end of fluid cylinder 2 connects pushing cylinder 5, the lower end of pushing cylinder 5 arranges and sets joint 7, the upper end that sets joint 7 connects solution end socket 9 by setting shear pin 8, connect and separate end socket 9 and be arranged on and set between joint 7 and intubate 6, lock ring 10 is set setting joint 7 and separate between end socket 9, connect separate end socket 9 lower end by deblocking shear pin 11 connecting mandrels 18, mandrel 18 is arranged on the outside of intubate 6, the upper end of mandrel 18 is threaded with intubate 6, between solution end socket 9 and mandrel 18, lock dog 12 is set.Be nested with cone 16, slips 17, slips cylinder 19 on mandrel 18, cone 16 is arranged on the below of lock ring 10, the upper end of cone 16 with set joint 7 and be threaded, between cone 16 and mandrel 18, lock tube 14 is set, lock tube 14 is arranged on the below of lock dog 12, the outer sand control rubber 13 that arranges of cone 16, and sand control rubber 13 is arranged on and sets between joint 7 and slips cylinder 19, between cone 16 and slips cylinder 19, spacing ring 15 is set, spacing ring 15 is threaded with the upper end of slips cylinder 19.The lower end of the intubate 6 sliding sleeve mandrel 21 that is threaded, the lower end of the sliding sleeve mandrel 21 retaining lock ring 27 that is threaded, connects control sliding sleeve 25 by pin in sliding sleeve mandrel 21.The lower end seal with screwed joint cover 20 of mandrel 18, the lower end of sealing shroud 20 plug 26 that is threaded, be nested with three packing elements 22 outside sealing shroud 20, three packing elements 22 are arranged between slips cylinder 19 and plug 26, between adjacent two packing elements 22, spacer ring 24 is set respectively, between sealing shroud 20 and sliding sleeve mandrel 21, switching sliding sleeve 23 is set, sealing shroud 20, switching sliding sleeve 23, sliding sleeve mandrel 21, retaining lock ring 27 are separately positioned in plug 26.

Claims (2)

1. integrated retrievable bridge plug of cement squeeze, comprise fluid cylinder (2), intubate (6), sliding sleeve mandrel (21), place top connection (1) in fluid cylinder (2), the lower end of top connection (1) the piston mandrel (3) that is threaded, piston mandrel (3) is set in the bottom of fluid cylinder (2), the lower end of fluid cylinder (2) connects pushing cylinder (5), the lower end of pushing cylinder (5) arranges and sets joint (7), the upper end that sets joint (7) connects solution end socket (9) by setting shear pin (8), connect and separate end socket (9) and be arranged on and set between joint (7) and intubate (6), lock ring (10) is set setting joint (7) and separate between end socket (9), connect the lower end of separating end socket (9) and pass through deblocking shear pin (11) connecting mandrel (18), between solution end socket (9) and mandrel (18), lock dog (12) is set, be nested with cone (16) on mandrel (18), slips (17), slips cylinder (19), cone (16) is arranged on the below of lock ring (10), the upper end of cone (16) with set joint (7) and be threaded, between cone (16) and mandrel (18), lock tube (14) is set, lock tube (14) is arranged on the below of lock dog (12), the outer sand control rubber (13) that arranges of cone (16), sand control rubber (13) is arranged on and sets between joint (7) and slips cylinder (19), between cone (16) and slips cylinder (19), spacing ring (15) is set, spacing ring (15) is threaded with the upper end of slips cylinder (19), the lower end seal with screwed joint cover (20) of mandrel (18), the lower end of sealing shroud (20) plug (26) that is threaded, be nested with at least two packing elements (22) outside sealing shroud (20), each packing element (22) is arranged between slips cylinder (19) and plug (26), spacer ring (24) is set respectively between adjacent two packing elements (22), and sealing shroud (20) and sliding sleeve mandrel (21) are separately positioned in plug (26), it is characterized in that: the upper end of described intubate (6) is threaded with the lower end of piston mandrel (3), the lower end of intubate (6) is threaded with the upper end of sliding sleeve mandrel (21), the lower end of sliding sleeve mandrel (21) the retaining lock ring (27) that is threaded, connect and control sliding sleeve (25) by pin in sliding sleeve mandrel (21), between sealing shroud (20) and sliding sleeve mandrel (21), switching sliding sleeve (23) is set, switching sliding sleeve (23) and retaining lock ring (27) are separately positioned in plug (26), described mandrel (18) is arranged on the outside of intubate (6), and the upper end of mandrel (18) is threaded with intubate (6).
2. integrated retrievable bridge plug of cement squeeze according to claim 1, it is characterized in that: the quantity of described fluid cylinder (2) is four.
CN201320465281.9U 2013-08-01 2013-08-01 Integrated dust squeezing bridge plug capable of being taken out Active CN203374238U (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105545251A (en) * 2016-02-02 2016-05-04 四机赛瓦石油钻采设备有限公司 Recoverable bridge plug for cable setting
CN107304658A (en) * 2016-04-22 2017-10-31 中国石油化工股份有限公司 A kind of penetration type plugging device
CN108590556A (en) * 2018-04-02 2018-09-28 中国石油天然气股份有限公司 Packer for squeezing grey operation and crowded grey method
CN111749643A (en) * 2020-07-02 2020-10-09 大庆益科石油科技开发有限公司 Integrated drillable squeezing bridge plug
CN112392432A (en) * 2021-01-19 2021-02-23 海塔石油科技有限公司 Multifunctional plugging bridge plug

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105545251A (en) * 2016-02-02 2016-05-04 四机赛瓦石油钻采设备有限公司 Recoverable bridge plug for cable setting
CN107304658A (en) * 2016-04-22 2017-10-31 中国石油化工股份有限公司 A kind of penetration type plugging device
CN108590556A (en) * 2018-04-02 2018-09-28 中国石油天然气股份有限公司 Packer for squeezing grey operation and crowded grey method
CN108590556B (en) * 2018-04-02 2020-07-10 中国石油天然气股份有限公司 Packer for ash squeezing operation and ash squeezing method
CN111749643A (en) * 2020-07-02 2020-10-09 大庆益科石油科技开发有限公司 Integrated drillable squeezing bridge plug
CN112392432A (en) * 2021-01-19 2021-02-23 海塔石油科技有限公司 Multifunctional plugging bridge plug
CN112392432B (en) * 2021-01-19 2021-03-23 海塔石油科技有限公司 Multifunctional plugging bridge plug

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