CN101949274B - Casing shut-in valve for cementing operation - Google Patents
Casing shut-in valve for cementing operation Download PDFInfo
- Publication number
- CN101949274B CN101949274B CN201010266105A CN201010266105A CN101949274B CN 101949274 B CN101949274 B CN 101949274B CN 201010266105 A CN201010266105 A CN 201010266105A CN 201010266105 A CN201010266105 A CN 201010266105A CN 101949274 B CN101949274 B CN 101949274B
- Authority
- CN
- China
- Prior art keywords
- casing
- valve
- circulation
- overcoat
- outer sleeve
- 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.)
- Active
Links
Abstract
The invention provides a casing shut-in valve for cementing operation. The casing shut-in valve for the cementing operation is characterized in that: the upper end and the lower end of a body 1 are connected with a casing string through casing threads; a closing sleeve 2 and a circulating outer sleeve 3 are arranged in the inner cavity of the body sequentially; a baffle plate 6 is welded at the lower end of the circulating outer sleeve 3; circulating holes are distributed on the baffle plate 6; the circulating outer sleeve 3 is connected with the inner cavity of the body 1 through threads and is sealed by an O-shaped rubber ring; the closing sleeve 2 is arranged in the inner cavity of the circulating outer sleeve 3 and is fastened with the circulating outer sleeve 3 through shear pins 4; and a retaining clamp spring 5 is arranged on the closing sleeve 2. The casing shut-in valve is arranged on the upper part of a float collar of the casing string and has the advantages of completely solving the problem that annular cement paste reverses to a casing during well cementing operation and guaranteeing that the mineshaft size meets the requirement of well completion subsequent operation, along with simple operation, no risk and high reliability.
Description
Technical field
The present invention relates to the particularly well cementing operation of horizontal well of oil gas well in the petroleum oil well completion field.
Background technology
Utilize conventional float collar, when float shoe carries out well cementing operation to horizontal well; Because float collar, float shoe horizontal positioned; Plug replaces and after bruising is accomplished the phenomenon that well head continues to flow often to take place, and is difficult to guarantee that cement paste does not flow backwards back in the sleeve pipe, causes pit shaft not reach the requirement of completion practice like this.In order to prevent on the oil gas horizontal well similar accident to take place, in bunch tube, add the sleeve pipe closing well and close, the cement paste that can thoroughly avoid replacing annular space returns in the sleeve pipe.
Summary of the invention
The purpose of this invention is to provide a kind of cementing job and use the sleeve pipe shut-in valve; Add the sleeve pipe shut-in valve on bunch tube float collar top; The cement paste that utilizes the sleeve pipe shut-in valve will thoroughly solve annular space during well cementing operation returns this problem in the sleeve pipe; Guarantee that borehole size reaches the requirement of completion subsequent job, simple to operate, devoid of risk, reliability are high.
Technical scheme of the present invention is:
A kind of cementing job is used the sleeve pipe shut-in valve, it is characterized in that: the upper and lower side of body is connected with bunch tube through casing threads; Close cover, the circulation overcoat places chamber body successively, and closes in the inner chamber that is placed on the circulation overcoat, and tightens together through shear pin, close to put the stopping jump ring be housed; Circulation overcoat lower end is welded with baffle plate, and outer the putting of circulation is evenly equipped with circulation port, and the circulation overcoat is connected with chamber body through screw thread, adopts " O " shape rubber ring to seal.
The present invention has following beneficial effect:
Adopted such scheme; Well cementing operation is not increased other operation; But because the reliable closing well effect of sleeve pipe shut-in valve; Can guarantee to manage outer annular space cement paste and can not return in the sleeve pipe, thoroughly solve the oil gas horizontal well and only leaned on float collar, float shoe can not effectively prevent to return in the sleeve pipe difficult problem of a part of cement paste.The back is not too many by other negative interaction, increase cost on the bunch tube because this sleeve pipe shut-in valve is connected to simultaneously, the advantage that the instrument success rate is high.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Below in conjunction with the embodiment accompanying drawing the present invention is described further:
A kind of cementing job is used the sleeve pipe shut-in valve, comprising: body 1, close cover 2, circulation overcoat 3, shear pin 4, stopping jump ring 5, baffle plate 6.The upper and lower side of body 1 is connected with bunch tube through casing threads; Close cover 2, circulation overcoat 3 places its inner chamber successively.Circulation overcoat 3 lower ends are welded with baffle plate 6, are evenly equipped with circulation port on the circulation overcoat 3, and circulation overcoat 3 is connected with body 1 inner chamber through screw thread, adopt " O " shape rubber ring to seal.Close the inner chamber that cover 2 places circulation overcoat 3, and tighten together, close on the cover 2 stopping jump ring 5 is housed through shear pin 4.
Construction process when utilizing the sleeve pipe shut-in valve to carry out well cementing operation is following:
1) the sleeve pipe shut-in valve is connected in the bunch tube, the bunch tube G.I.H;
2) carry out the cementing operation by the normal construction order, cement paste will get into subordinate's cementing tool----float collar, float shoe through the circulation port on the circulation overcoat 3, return casing annulus in circulation.After having annotated, cement paste is pressed into plug, and descending at the effect bottom plug of displacement fluid.When plug replaces sleeve pipe shut-in valve position; Because spacing meeting raises pump pressure; Can shear pin 4 on the sleeve pipe shut-in valve be cut off to the certain pressure value; Close the circulation port that cover is about to for 2 times to circulate on the overcoat 3 and close, close cover 2 and will accomplish permanent closing well through stopping jump ring 5 locks for one with circulation overcoat 3 and move.Well cementing operation also ends simultaneously.
Circulatory mediator is clear water, mud and cement prize.
Claims (1)
1. a cementing job is used the sleeve pipe shut-in valve, it is characterized in that the upper and lower side of body (1) is connected with bunch tube through casing threads; Close cover (2), circulation overcoat (3) places chamber body successively, and closes the inner chamber that cover (2) places circulation overcoat (3), and tightens together through shear pin (4), close stopping jump ring (5) be housed on the cover (2); Circulation overcoat (3) lower end is welded with baffle plate (6), and the circulation overcoat is evenly equipped with circulation port on (3), and circulation overcoat (3) is connected with body (1) inner chamber through screw thread, adopts " O " shape rubber ring to seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010266105A CN101949274B (en) | 2010-08-27 | 2010-08-27 | Casing shut-in valve for cementing operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010266105A CN101949274B (en) | 2010-08-27 | 2010-08-27 | Casing shut-in valve for cementing operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101949274A CN101949274A (en) | 2011-01-19 |
| CN101949274B true CN101949274B (en) | 2012-10-17 |
Family
ID=43452888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010266105A Active CN101949274B (en) | 2010-08-27 | 2010-08-27 | Casing shut-in valve for cementing operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101949274B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306636B (en) * | 2012-03-15 | 2015-12-09 | 中国石油化工股份有限公司 | A kind of completion tubular string and cemented method |
| CN102865040B (en) * | 2012-10-17 | 2015-06-17 | 天津德瑞克石油工具有限公司 | Sleeve buoyancy weight reduction system |
| US20150075791A1 (en) * | 2013-09-16 | 2015-03-19 | Target Completions, LLC | Mandrel-less Launch Toe Initiation Sleeve (TIS) |
| CN106555562A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Displacement control homing position type is from grouting blind plate |
| CN105257243A (en) * | 2015-10-20 | 2016-01-20 | 中国石油天然气股份有限公司 | Well cementing bump pressure shut-in sliding sleeve device |
| CN112253045A (en) * | 2020-12-08 | 2021-01-22 | 中国石油天然气集团有限公司 | Sliding sleeve type impacting seat |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061235U (en) * | 1989-11-30 | 1990-08-29 | 张利斌 | Casing-pipe back-pressure valve for automatic grouting |
| CN2061206U (en) * | 1989-08-25 | 1990-08-29 | 四川省石油管理局川东钻探公司 | Self-injecting mud back-pressure valve |
| EP0760418A2 (en) * | 1995-08-24 | 1997-03-05 | Fmc Corporation | Check valve and check valve seat |
| US6244342B1 (en) * | 1999-09-01 | 2001-06-12 | Halliburton Energy Services, Inc. | Reverse-cementing method and apparatus |
| US6725935B2 (en) * | 2001-04-17 | 2004-04-27 | Halliburton Energy Services, Inc. | PDF valve |
| CN2683839Y (en) * | 2004-03-23 | 2005-03-09 | 韩永成 | Double turning board type casing pipe backpressure valve |
-
2010
- 2010-08-27 CN CN201010266105A patent/CN101949274B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061206U (en) * | 1989-08-25 | 1990-08-29 | 四川省石油管理局川东钻探公司 | Self-injecting mud back-pressure valve |
| CN2061235U (en) * | 1989-11-30 | 1990-08-29 | 张利斌 | Casing-pipe back-pressure valve for automatic grouting |
| EP0760418A2 (en) * | 1995-08-24 | 1997-03-05 | Fmc Corporation | Check valve and check valve seat |
| US6244342B1 (en) * | 1999-09-01 | 2001-06-12 | Halliburton Energy Services, Inc. | Reverse-cementing method and apparatus |
| US6725935B2 (en) * | 2001-04-17 | 2004-04-27 | Halliburton Energy Services, Inc. | PDF valve |
| CN2683839Y (en) * | 2004-03-23 | 2005-03-09 | 韩永成 | Double turning board type casing pipe backpressure valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101949274A (en) | 2011-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101949274B (en) | Casing shut-in valve for cementing operation | |
| CN101929318B (en) | Stage cementing device | |
| CN204040997U (en) | From grouting floating hoop float shoe | |
| CN102400662A (en) | Pluggable oil-layer anti-leakage valve | |
| CN103573214B (en) | A kind of Operating Pressure circulation bottom valve | |
| CN201884002U (en) | Drilling downhole check valve | |
| CN202990953U (en) | Blowout preventing mechanical anchor of screw pump | |
| CN205477525U (en) | Horizontal well floats case tubular column | |
| CN105089544B (en) | A kind of pressure-bearing casing protective packer | |
| CN202360051U (en) | Safe bidirectional well washing valve | |
| CN105587286B (en) | Lost circulation prevention flushing packer | |
| CN209603919U (en) | Not termination of pumping negative pressure sand washing auto Isolator Well Head | |
| CN204827363U (en) | It closes closed float collar to bump to press | |
| RU128896U1 (en) | DEVICE FOR TRANSFER OF WELLS, INCLUDING WATERFILLED, TO OPERATION ON TWO LIFT COLUMNS | |
| CN105422049A (en) | Continuous circulating sand flushing device and method | |
| CN201705287U (en) | Anti-backflow lubricating nipple of pumping well mouth | |
| CN204126591U (en) | Operating Pressure tail pipe circulation shutoff the complete sets of equipment | |
| CN201344012Y (en) | Expanding well-flushing packer | |
| CN2837505Y (en) | Down-hole grouting tool | |
| CN202417410U (en) | Well washing packer | |
| CN209586346U (en) | A kind of bet orchestration of the two-tube water injection technological string of blowout prevention | |
| CN203230386U (en) | Outer sliding sleeve type oil drain device | |
| CN205778710U (en) | A kind of packer | |
| CN205189827U (en) | Continuous cycle sand washing device | |
| CN202417409U (en) | Oil pipe plugging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |