CN107605428B - One kind can pressure release shut-in well bridge plug - Google Patents
One kind can pressure release shut-in well bridge plug Download PDFInfo
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- CN107605428B CN107605428B CN201710831982.2A CN201710831982A CN107605428B CN 107605428 B CN107605428 B CN 107605428B CN 201710831982 A CN201710831982 A CN 201710831982A CN 107605428 B CN107605428 B CN 107605428B
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- release
- central tube
- circlip
- connection
- fixture block
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Abstract
The present invention relates to one kind can pressure release shut-in well bridge plug.Mainly solve the problems, such as existing bridge plug suppress set when it is easily poorly sealed, in deblocking when cannot be unsealed after first pressure release.It is characterized by: top connection (1) bottom outside is connect with connector sleeve (7), bottom inside is connected with central tube of giving up (10), central tube (10) of giving up is externally connected to fishing head (9), fixture block seating nipple (15) are equipped between fishing head (9) lower section and main central tube (10), it is connect between fixture block seating nipple (15) and main central tube (31) by fixture block (16), fixture block seating nipple (15) lower outside is equipped with release set (21), and discharges and connect between set (21) and external connector sleeve (7) by release set release pin (22).The shut-in well bridge plug can hang former well casing column, sealed reliable, can unseal after first pressure release, realize safety in production.
Description
Technical field
The present invention relates to a kind of oilfields, and specifically one kind can pressure release shut-in well bridge plug.
Background technique
Tool currently used for reservoir machine plugging is mainly bridge plug, which finds that there are following several in application process
Point problem: first is that bridge plug suppress set when, packing element be easy first is acted compared with slips, easily cause slips support not exclusively, packing element mill
Damage, there are poorly sealed hidden danger；Second is that building the pressure in well after shut-in well for a long time, not when unsealing operation because bridge plug is without pressure release passage
It can be unsealed after first pressure release, there are top, moment blowouts on tubing string even to fly the safety and environmental protections hidden danger such as pipe.
Summary of the invention
In order to overcome existing bridge plug suppress set when it is easily poorly sealed, in deblocking when cannot be unsealed not after first pressure release
Foot, the present invention provide one kind can pressure release shut-in well bridge plug, which can hang former well casing column, sealed reliable, can be after first pressure release
Safety in production is realized in deblocking.
The technical scheme is that one kind can pressure release shunt in a well bridge plug, including top connection, the top connection bottom outside with
Connector sleeve connection, bottom inside are connected with central tube of giving up, and are lost inside central tube of giving up by sliding sleeve release pin connection of giving up
Rubber sleeve set, central tube of giving up are externally connected to fishing head, and fishing head bottom connects main central tube by deblocking release pin, salvage
It is equipped with fixture block seating nipple between head lower section and main central tube, is connected between fixture block seating nipple and main central tube by fixture block, fixture block work
Make cylinder lower outside and be equipped with release set, and discharges between set and the connector sleeve of outside by release set release pin connection；The company
Female connector lower part is worked by circlip covers connection pressure-bearing set, and the internal circlip shop bolt connection circlip that passes through of circlip work set works
Cylinder, and circlip is equipped between circlip work set and circlip seating nipple；
Pressure-bearing set bottom is connected with compression piston, and circlip seating nipple bottom is equipped with high pressure spacer ring, and high pressure spacer ring with
Internal main central tube is threadedly coupled, and has gap between high pressure spacer ring and compression piston, and on the corresponding main central tube of gap location
It is provided with through-hole；The compression piston bottom connection packing element control set, packing element control set is external to be equipped with packing element, packing element control set bottom
Upper cone is connected by packing element release pin, upper cone bottom connects slips guide sleeve by upper cone release pin, and slips is led
It is fixed with slips to putting on, slips guide sleeve lower part connects lower cone by lower cone release pin；
The lower cone bottom connects pressure release pistons work cylinder, passes through pressure release piston release pin inside pressure release pistons work cylinder
Nail connection pressure release piston, pressure release pistons work cylinder bottom is sequentially connected box cupling, pipe nipple, silk plug.
The invention has the following beneficial effects: due to taking above scheme, which unseals after can realizing first pressure release, due to
Bridge plug subordinate has a big channel relief hole, and the fishing tool with tapping pin is salvaged again after disclosing pressure release piston when deblocking, solves because of length
The problems such as well oil builds the pressure or because shut-in well depth is compared with well after phase shut-in well, and top, moment blowout even fly pipe on tubing string when deblocking, improves
Operational security eliminates safety and environmental protection hidden danger.The bridge plug sets and gives up and completes in two steps simultaneously, solves to set and is not thorough just
The problem of giving up in advance, and can hang compared with big load, it can not meet the shut-in well needs of former well casing column well.
Detailed description of the invention
Fig. 1, Fig. 2, Fig. 3 are upper, middle and lower section of the invention respectively.
1- top connection in figure, 2- give up stick, and 4- gives up sliding sleeve, 5- connector sleeve shop bolt, 7- connector sleeve, and 8- loses
Rubber sleeve covers release pin, 9- fishing head, and 10- gives up central tube, and 12- unseals release pin, and 13- controls nut, 14- lock
Nail, 15- fixture block seating nipple, 16- fixture block, 17- fixture block control set, 21- release set, 22- release set release pin, 25-
Release set shelves ring, 26- circlip shop bolt, 27- circlip, 28- circlip work set, 29- circlip seating nipple, 30- pressure-bearing
Set, the main central tube of 31-, 32- circlip seating nipple control nut, 33- high pressure spacer ring, 36- compression piston, the control of 39- packing element
It covers, the side 40- packing element, 41- spacer ring, packing element in 42-, 43- upper cone, 44- packing element release pin, the release of 45- upper cone
Pin, 46- slips, 47- spring, 48- slips guide sleeve, 49- lower cone release pin, 50- guide pin, under 51-
Cone, 52- pressure release pistons work cylinder, 53- pressure release piston, 55- pressure release piston release pin, 56- box cupling, 57- pipe nipple,
58- silk plug.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As shown in Fig. 1 to Fig. 3, one kind can pressure release shunt in a well bridge plug, including top connection 1 is equipped with stick 2 of giving up inside top connection 1,
1 bottom outside of top connection is connect with connector sleeve 7, and has connector sleeve shop bolt 5 between top connection 1 and connector sleeve 7, is above connect
First 1 bottom inside is threadedly coupled central tube 10 of giving up, and is given up inside central tube 10 of giving up by the connection of sliding sleeve release pin 8 of giving up
Sliding sleeve 4.Central tube 10 of giving up is externally connected to fishing head 9, and 9 bottom of fishing head connects main central tube by unsealing release pin 12
31, between 9 lower section of fishing head and main central tube 10 be equipped with fixture block seating nipple 15, between fixture block seating nipple 15 and main central tube 31 by
Fixture block 16 connects, and 15 upper outside of fixture block seating nipple connection control nut 13 controls and leads between nut 13 and fixture block seating nipple 15
Cross the fastening of pin 14,15 lower outside of fixture block seating nipple is equipped with release set 21, and discharge between set 21 and external connector sleeve 7 by
Release set release pin 22 connects, and the release, which covers, is equipped with release set baffle ring 25 between 21 bottoms and fixture block seating nipple 15.It is described
7 lower part of connector sleeve is connected by 28 connection pressure-bearing set 30 of circlip work set, 28 inside of circlip work set by circlip shop bolt 26
Circlip seating nipple 29 is connect, and is equipped with circlip 27 between circlip work set 28 and circlip seating nipple 29, and circlip 27 is positioned by circlip
Pin 26 is fixed, and is threadedly coupled between 29 top of circlip seating nipple and release set baffle ring 25.
The pressure-bearing covers 30 bottoms and is connected with compression piston 36, and 29 bottom of circlip seating nipple is equipped with high pressure spacer ring 33, and high
Pressure spacer ring 33 is threadedly coupled with internal main central tube 31, and 29 bottom outside connection circlip seating nipple of circlip seating nipple controls nut
32.There is gap between the high pressure spacer ring 33 and compression piston 36, and is provided with through-hole on the corresponding main central tube 31 of gap location.Institute
36 bottom of compression piston connection packing element control set 39 is stated, 39 outside of packing element control set is equipped with packing element, and the packing element includes two sides
Packing element 40 and a middle packing element 42 are separated by between each packing element by spacer ring 41.39 bottoms of packing element control set pass through packing element release pin
44 connection upper cones 43,43 bottom of upper cone connects slips guide sleeve 48, slips guide sleeve 48 by upper cone release pin 45
It is inside fixed with slips 46,48 lower part of slips guide sleeve connects lower cone 51 by lower cone release pin 49.
51 bottom of lower cone connects pressure release pistons work cylinder 52, passes through pressure release piston inside pressure release pistons work cylinder 52
Release pin 55 connects pressure release piston 53, and 52 bottom connection coupling 56 of pressure release pistons work cylinder, 56 bottom of box cupling is connected with pipe nipple
57,57 bottom of pipe nipple connects silk plug 58.
1 G.I.H projected depth of top connection is connected with oil pipe when setting.It pressurizes into oil pipe, when pressure reaches 5 ~ 8MPa
When cut release set release pin 22, release set 21 is moved to the left at main 31 step of central tube, and circlip work set 28 loses branch
Support is detached from connector sleeve 7.Compression piston 36 drives pressure-bearing set 30, circlip work set 28, circlip shop bolt 26, circlip 27, glue
Cylinder control set 39, packing element, upper cone 43, packing element release pin 44, upper cone release pin 45, slips 46, slips guide sleeve 48
It moves right, cuts lower cone release pin 49,46 right end of slips is strutted by lower cone 51 to be contacted with internal surface of sleeve pipe.When pressure reaches
When to 10MPa, upper cone release pin 45 is cut, and 46 left end of slips is strutted by upper cone 43 to be contacted with internal surface of sleeve pipe.Work as pressure
When power reaches 14MPa, packing element release pin 44 is cut, and side packing element 40, middle packing element 42 are compressed, and diameter becomes larger and internal surface of sleeve pipe
Contact.When pressure reaches 22MPa, slips 46 is further strutted that be embedded into internal surface of sleeve pipe certain by upper cone 43, lower cone 51
Depth, side packing element 40, middle packing element 42 are further compressed, and are further increased with the contact stress of internal surface of sleeve pipe.Circlip 27 at this time
It is stuck at the buttless thread on circlip seating nipple 29, prevents packing element (40,42), slips 46 from retracting.Rotate clockwise oil pipe 15 ~
20 circles make give up central tube 10 and the disengagement of main central tube 31.Rise fuel-displaced tubing string, top connection 1, connector sleeve 7, central tube 10 of giving up,
Sliding sleeve 4 of giving up is removed together.Entire setting process is completed.
When deblocking, the Special fishing tool G.I.H with tapping pin is cut pressure release piston release pin 55, promotion is let out
Pressure piston 53 moves right, and opens pressure release passage, completes the pressure release in pit shaft.Work is salvaged in the further tripping in of Special fishing tool
Tool fishes out fishing head 9.Examination mentions fishing string, and deblocking release pin 12 is cut, and fishing head 9, fixture block control cover 17 together to the left
It is mobile, so that fixture block 16 is lost support, fixture block seating nipple 15 unlocks with central tube 31.Fishing head 9 drives fixture block control at this time
Set 17, fixture block seating nipple 15, release set 21, release set shelves ring 25, circlip work set 28, circlip seating nipple 29, pressure-bearing set 30, card
Spring seating nipple controls nut 32, high pressure spacer ring 33, compression piston 36, packing element control set 39, upper cone 43, slips guide sleeve 48 1
It rises and is moved to the left, so that packing element is lost compression and restore to the original state, slips 46 recycles unfreezing under the action of spring 47, and entire bridge plug can be with
It is risen.
The bridge plug unseals after can realizing first pressure release, since bridge plug subordinate has a big channel relief hole, beating with tapping pin when deblocking
Fishing combined tool is salvaged again after disclosing pressure release piston 53, is solved because well oil builds the pressure or because shut-in well depth is compared with well, solution after long-term shut-in well
The problems such as top, moment blowout even fly pipe on tubing string when envelope, improves operational security, eliminates safety and environmental protection hidden danger.The bridge simultaneously
Plug sets and gives up to be completed in two steps, and main central tube 31 uses screwed connection with fishing head 9, can be lost by rotation tubing string implementation
Hand is solved the problems, such as to set to be not thorough and just be given up in advance, and can hang compared with big load, can not meet the shut-in well of former well casing column well
It needs.
Claims (1)
1. one kind can pressure release shunt in a well bridge plug, including top connection (1), it is characterised in that: top connection (1) bottom outside with connect
(7) connection is covered, bottom inside is connected with central tube of giving up (10), passes through sliding sleeve release pin of giving up inside central tube of giving up (10)
(8) connection is given up sliding sleeve (4), and central tube of giving up (10) is externally connected to fishing head (9), and fishing head (9) bottom is released by deblocking
It puts pin (12) and connects main central tube (31), be equipped with fixture block seating nipple (15) between fishing head (9) lower section and main central tube (10),
It is connect between fixture block seating nipple (15) and main central tube (31) by fixture block (16), fixture block seating nipple (15) lower outside is equipped with release
It covers (21), and discharges and connect between set (21) and external connector sleeve (7) by release set release pin (22)；The connector sleeve
(7) lower part is worked by circlip covers (28) connection pressure-bearing set (30), passes through circlip shop bolt inside circlip work set (28)
(26) connection circlip seating nipple (29), and circlip (27) are equipped between circlip work set (28) and circlip seating nipple (29)；
Pressure-bearing set (30) bottom is connected with compression piston (36), and circlip seating nipple (29) bottom is equipped with high pressure spacer ring (33),
And high pressure spacer ring (33) is threadedly coupled with internal main central tube (31), between having between high pressure spacer ring (33) and compression piston (36)
Gap, and through-hole is provided on the corresponding main central tube (31) of gap location；Compression piston (36) the bottom connection packing element control set
(39), packing element is equipped with outside packing element control set (39), packing element control set (39) bottom passes through in packing element release pin (44) connection
Cone (43), upper cone (43) bottom pass through upper cone release pin (45) connection slips guide sleeve (48), slips guide sleeve
(48) it is fixed on slips (46), slips guide sleeve (48) lower part passes through lower cone release pin (49) connection lower cone (51)；
Lower cone (51) bottom connects pressure release pistons work cylinder (52), and pressure release pistons work cylinder (52) is internal living by pressure release
Release pin (55) connection pressure release piston (53) is filled in, pressure release pistons work cylinder (52) bottom is sequentially connected box cupling (56), pipe nipple
(57), silk plug (58).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710831982.2A CN107605428B (en) | 2017-12-11 | 2017-12-11 | One kind can pressure release shut-in well bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710831982.2A CN107605428B (en) | 2017-12-11 | 2017-12-11 | One kind can pressure release shut-in well bridge plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107605428A CN107605428A (en) | 2018-01-19 |
| CN107605428B true CN107605428B (en) | 2019-11-26 |
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ID=61063688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710831982.2A Active CN107605428B (en) | 2017-12-11 | 2017-12-11 | One kind can pressure release shut-in well bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107605428B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905429B (en) * | 2019-11-18 | 2020-09-11 | 川南航天能源科技有限公司 | Automatic pressure relief balanced type setting tool and setting method thereof |
| CN111305788B (en) * | 2020-02-26 | 2022-05-06 | 中国石油天然气股份有限公司 | High-pressure-resistant bridge plug for fracturing and use method thereof |
| CN112228005B (en) * | 2020-09-27 | 2023-03-14 | 齐齐哈尔亚盛机械制造有限公司 | Low setting force bridge plug capable of fishing for well lifting and pressure relief |
| CN114934759A (en) * | 2022-06-01 | 2022-08-23 | 天津东拓油田技术服务有限公司 | N-type removable inner bridge plug of oil pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3454089A (en) * | 1968-02-02 | 1969-07-08 | Cicero C Brown | Bridging plug with pressure relief means and mandrel latch |
| CN203499630U (en) * | 2013-08-13 | 2014-03-26 | 江苏汇浩石油装备有限公司 | Hydraulic sealing packer |
| CN203847063U (en) * | 2014-02-27 | 2014-09-24 | 孔利生 | Gradual-cracking bridge plug in horizontal well pipe |
| CN104074491A (en) * | 2014-07-09 | 2014-10-01 | 中国石油集团渤海钻探工程有限公司 | Oil pipe bridge plug |
| CN105317394A (en) * | 2014-06-26 | 2016-02-10 | 天津市正瀚石油设备制造有限公司 | High-temperature-resistant and high-pressure-bearing packer special for oil drilling |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7011153B2 (en) * | 2003-12-23 | 2006-03-14 | Schlumberger Technology Corporation | Hydraulically released inflation tool for permanent bridge plug |
| GB2489984B (en) * | 2011-04-15 | 2015-11-04 | Aker Well Service As | Bridge plug tool |
-
2017
- 2017-12-11 CN CN201710831982.2A patent/CN107605428B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3454089A (en) * | 1968-02-02 | 1969-07-08 | Cicero C Brown | Bridging plug with pressure relief means and mandrel latch |
| CN203499630U (en) * | 2013-08-13 | 2014-03-26 | 江苏汇浩石油装备有限公司 | Hydraulic sealing packer |
| CN203847063U (en) * | 2014-02-27 | 2014-09-24 | 孔利生 | Gradual-cracking bridge plug in horizontal well pipe |
| CN105317394A (en) * | 2014-06-26 | 2016-02-10 | 天津市正瀚石油设备制造有限公司 | High-temperature-resistant and high-pressure-bearing packer special for oil drilling |
| CN104074491A (en) * | 2014-07-09 | 2014-10-01 | 中国石油集团渤海钻探工程有限公司 | Oil pipe bridge plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107605428A (en) | 2018-01-19 |
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