CN206439026U - Unidirectional detachable bridge plug - Google Patents
Unidirectional detachable bridge plug Download PDFInfo
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- CN206439026U CN206439026U CN201720133825.XU CN201720133825U CN206439026U CN 206439026 U CN206439026 U CN 206439026U CN 201720133825 U CN201720133825 U CN 201720133825U CN 206439026 U CN206439026 U CN 206439026U
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- slips
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- unidirectional
- bridge plug
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Abstract
The utility model is related to a kind of unidirectional detachable bridge plug.Mainly solve the problem of kill-job efficiency is low after casing fracturing.It is characterized in that：It is described to set joint（2）Connection solution sealing joint（6）, solve sealing joint connecting mandrel（9）, mandrel（9）Lower end connects glue tube base（17）；Set joint（2）Bottom connects sand control rubber（12）, set joint（2）With sand control rubber（12）Inwall connects slips cone（14）, slips cone（14）Outer wall connects spacing ring respectively（13）, slips（16）, slips cylinder is terminated with spacing ring（15）, slips is equipped between slips cone and slips cylinder（16）, glue tube base（17）Exterior boss top connects several packing elements（18）, packing element（18）Top is connected to slips cylinder（15）.The unidirectional detachable bridge plug can improve kill-job efficiency and well control safety under empty wellbore conditions.
Description
Technical field
The utility model is related to oil and gas wells in oil fields formation testing completion technique field, more particularly to a kind of unidirectional detachable bridge plug.
Background technology
In deep gas well pressing crack construction, through frequently with casing fracturing mode, being applied to meet pressure break huge discharge, STOL amount etc.
Work demand, although the pressure break mode can reduce labor intensity, reduction pressure break mill resistance without lower tubular column.But due in well without tubing string,
Formation depletion after squeezing method kill-job, and such well pressure break gas testing can only be taken seriously, easily to occur stratum during kill-job after pressure break
The problems such as leakage is big, well control risk is high, causes very big difficulty to kill-job construction, is difficult to carry out follow-up completion.In addition, a large amount of pressures
Well liquid squeezes into stratum, makes that after many high-quality well kill-jobs initial production capacity can not be recovered, passes through yield before and after conventional real well kill-job
Comparative analysis, the daily output declines 20% or so.
The content of the invention
Technical problem to be solved in the utility model is to overcome kill-job after existing casing fracturing present in background technology
The problem of efficiency is low, and a kind of unidirectional detachable bridge plug is provided, the unidirectional detachable bridge plug, it is possible to increase under empty wellbore conditions
Kill-job efficiency and well control safety.
The invention for solving the technical problem can reach by following technical solution：The unidirectional detachable bridge plug, including sit
Sealing joint, mandrel, the joint that sets is by setting shear pin connection solution sealing joint, and solution sealing joint is by unsealing shear pin connection core
Axle, mandrel lower end connection glue tube base；Joint bottom connection sand control rubber is set, joint is set and is connected slips with sand control rubber inwall
Cone, in the middle part of slips cone outer wall, bottom connect slips cylinder is terminated with spacing ring, slips, spacing ring respectively, slips cone with
Slips is equipped between slips cylinder, glue tube base exterior boss top connects several packing elements, and packing element top is connected to slips cylinder；Slips cone
Top sets inner nosepiece wall connection lock ring；Lock tube is housed between slips cone upper end and mandrel, put between solution sealing joint lower end and mandrel
There is two neighboring closing piece.
The utility model can have the advantages that compared with above-mentioned background technology：The unidirectional detachable bridge plug can
For a long time in reserved well, fail from dielectric corrosion in well, bridging plug is using corrosion-resistant material, it is ensured that bridging plug can long-term work in
Underground；Reserved bridging plug in well can be removed in time in order to meet subsequent construction, employed recoverable bridging plug, only needed tripping in salvage
Cylinder, bridging plug in well can smoothly be played out by carrying out docking, make to recover unimpeded in well；In order that bridging plug can either block stratum, may be used also
Make the smooth output of gas in well, employ check-valve type design, i.e., control closing or the opening of ball-and-seat under pressure, when
Head of liquid is more than bottom pressure in tubing string, and ball-and-seat is closed, and can effectively block stratum, when discharge tubing string internal pressure well
Liquid, makes bottom pressure be more than head of liquid in tubing string, and ball-and-seat is automatically opened up, and realizes formation gas output.This is unidirectional retrievable
Bridging plug substantially increases kill-job efficiency and well control safety under sky wellbore conditions, while having completion function.
Brief description of the drawings：
Accompanying drawing 1 is structural representation of the present utility model；
Accompanying drawing 2 is the structural representation of the utility model use state.
In figure：1 sets shear pin；2 set joint；3 sand control rubber cushions；4 "O"-rings；5 connectors；6 solution sealing joints
；7 lock rings；8 deblocking shear pins；9 mandrels；10 closing pieces；11 lock tubes；12 sand control rubber；13 spacing rings；14 slips cones；
15 slips cylinder；16 slips；17 glue tube bases；18 packing elements；19 spacer rings；20 ball-and-seats.
Embodiment：
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figures 1 and 2, the unidirectional detachable bridge plug includes setting joint 2, mandrel 9, and the joint 2 that sets passes through
The connection solution sealing joint 6 of shear pin 1 is set, solution sealing joint 6 connects glue tube base 17 by unsealing the connecting mandrel 9 of shear pin 8, the lower end of mandrel 9,
The lower end of glue tube base 17 connects ball-and-seat 20；The bottom of joint 2 connection sand control rubber 12 is set, is set in joint 2 and sand control rubber 12
Wall connection slips cone 14, the outer wall of slips cone 14 middle part, bottom connect spacing ring 13, slips 16, the lower end of spacing ring 13 respectively
Slips cylinder 15 is connected to, slips 16 is equipped between slips cone 14 and slips cylinder 15, the exterior boss top of glue tube base 17 connects 3 packing elements
18, spacer ring 19 is equipped between adjacent packing element 18, the top of packing element 18 is connected to slips cylinder 15；The top of slips cone 14 sets the inwall of joint 2
Connect lock ring 7；Lock tube 11 is housed between the upper end of slips cone 14 and mandrel 9, adjacent two are equipped between the solution lower end of sealing joint 6 and mandrel 9
Individual closing piece 10；Set and sand control rubber cushion 3 is equipped between the upper end of joint 2 and solution sealing joint 6, solution sealing joint 6 inner chamber is connected to connector 5, even
The top of joint 5 is equipped with "O"-ring 4；The mandrel 9, glue tube base 17, connector 5 are hollow-core construction, and the bridging plug uses corrosion-resistant material
Matter.
The unidirectional detachable bridge plug is mainly made up of hollow detachable bridge plug and ball-and-seat two parts.Technical indicator is：Work
Make pressure 70MPa；150 DEG C of operating temperature；Set pressure difference 18-22MPa；Maximum outside diameter φ 114mm；Minimum latus rectum φ 28mm.Should
Unidirectional detachable bridge plug is set in sleeve pipe, effectively insulates annular space；Hollow design, it is ensured that oil pipe is unimpeded, is supported the use with ball-and-seat,
Play single current valve action.When surface pressure is big on bridging plug, ball-and-seat is closed, and is effectively blocked stratum, is contributed to kill-job operation；Work as bridge
When the lower surface pressure of plug is big, ball-and-seat is opened, and hydrocarbon stratum output can directly carry out completion operation.
The instrument is mainly made up of hollow detachable bridge plug and ball-and-seat two parts.Can be in situation with pressure using coiled tubing
Under be conveyed into well, putting into steel ball into tubing string when setting is taken a seat, and hydraulic pressure is beaten into oil pipe by pump truck, when pressure difference is up to 18-22MPa
When, pressure suddenly drops to 0, and unidirectional detachable bridge plug is set, and well interior circulation is full of well killing fluid after giving up, in the effect of well killing fluid
Under, head of liquid is more than bottom pressure, and underground check valve is closed, and effectively temporarily blocks up stratum, can now pacify completion tubular column and instrument
The preset depth of full tripping in, well killing fluid in well is discharged with means such as liquid nitrogen cleanups, and now bottom pressure is more than head of liquid, single current
Valve is opened, and realizes gas output in well.If bridging plug need to be salvaged, Special fishing tool can be descended, above carrying to unseal.In addition,
Press-fracturing bridge plug can also be done, i.e., it is temporarily stifled unidirectionally when carrying out the measure operations such as pressure break, acidifying to unidirectional detachable bridge plug upper layer position
Modus ponens bridging plug cutting optimal position, after the measure end of job, the unidirectional upper and lower layer position of detachable bridge plug can close layer production.
Claims (6)
1. a kind of unidirectional detachable bridge plug, including set joint（2）, mandrel（9）, it is characterised in that：It is described to set joint（2）It is logical
Cross and set shear pin（1）Connection solution sealing joint（6）, solve sealing joint（6）By unsealing shear pin（8）Connecting mandrel（9）, mandrel（9）Under
End connection glue tube base（17）；Set joint（2）Bottom connects sand control rubber（12）, set joint（2）With sand control rubber（12）It is interior
Wall connects slips cone（14）, slips cone（14）Outer wall middle part, bottom connect spacing ring respectively（13）, slips（16）, it is spacing
Ring（13）Under be terminated with slips cylinder（15）, slips cone（14）With slips cylinder（15）Between be equipped with slips（16）, glue tube base（17）Outside
Portion boss top connects several packing elements（18）, packing element（18）Top is connected to slips cylinder（15）；Slips cone（14）Top is set
Joint（2）Inwall connects lock ring（7）；Slips cone（14）Upper end and mandrel（9）Between be equipped with lock tube（11）, solve sealing joint（6）Under
End and mandrel（9）Between be equipped with two neighboring closing piece（10）.
2. unidirectional detachable bridge plug according to claim 1, it is characterised in that：The adjacent packing element（18）Between be equipped with spacer ring
（19）.
3. unidirectional detachable bridge plug according to claim 1, it is characterised in that：It is described to set joint（2）Upper end and deblocking
Joint（6）Between be equipped with sand control rubber cushion（3）, solve sealing joint（6）Inner chamber is connected to connector（5）, connector（5）Top is equipped with " O " type
Circle（4）.
4. unidirectional detachable bridge plug according to claim 1, it is characterised in that：The packing element（18）For 3.
5. unidirectional detachable bridge plug according to claim 1, it is characterised in that：The mandrel（9）, glue tube base（17）, even
Joint（5）For hollow-core construction.
6. unidirectional detachable bridge plug according to claim 1, it is characterised in that：The glue tube base（17）Lower end connects single current
Valve（20）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720133825.XU CN206439026U (en) | 2017-02-14 | 2017-02-14 | Unidirectional detachable bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720133825.XU CN206439026U (en) | 2017-02-14 | 2017-02-14 | Unidirectional detachable bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206439026U true CN206439026U (en) | 2017-08-25 |
Family
ID=59634004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720133825.XU Active CN206439026U (en) | 2017-02-14 | 2017-02-14 | Unidirectional detachable bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206439026U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104764A (en) * | 2018-01-03 | 2018-06-01 | 中国石油集团西部钻探工程有限公司 | Temporary blocking type bridge plug |
| CN113073958A (en) * | 2021-03-19 | 2021-07-06 | 中国石油天然气集团有限公司 | Recyclable bridge plug and using method |
| CN113638712A (en) * | 2021-08-30 | 2021-11-12 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
-
2017
- 2017-02-14 CN CN201720133825.XU patent/CN206439026U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104764A (en) * | 2018-01-03 | 2018-06-01 | 中国石油集团西部钻探工程有限公司 | Temporary blocking type bridge plug |
| CN108104764B (en) * | 2018-01-03 | 2024-01-23 | 中国石油天然气集团有限公司 | Temporary blocking type bridge plug |
| CN113073958A (en) * | 2021-03-19 | 2021-07-06 | 中国石油天然气集团有限公司 | Recyclable bridge plug and using method |
| CN113638712A (en) * | 2021-08-30 | 2021-11-12 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
| CN113638712B (en) * | 2021-08-30 | 2024-05-28 | 阜宁县宏达石化机械有限公司 | Reverse gravel throwing device |
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