CN2625571Y - Impacting seat for well cementing - Google Patents
Impacting seat for well cementing Download PDFInfo
- Publication number
- CN2625571Y CN2625571Y CN 03217997 CN03217997U CN2625571Y CN 2625571 Y CN2625571 Y CN 2625571Y CN 03217997 CN03217997 CN 03217997 CN 03217997 U CN03217997 U CN 03217997U CN 2625571 Y CN2625571 Y CN 2625571Y
- Authority
- CN
- China
- Prior art keywords
- bump
- top connection
- upper joint
- well cementing
- seat
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a well cementing bump seat utilized by oil industry, which is used for various kinds of underground well cementing works. The device comprises an upper joint, a lower joint connected with the upper joint, a circular hole arranged on the upper joint and a piston arranged inside an assembly space between the upper joint and the lower joint. The device solves the problems of the nonrecirculating of a fixed rubber plug seat after bump, the unobvious demonstration or unable to open of the movable rubber plug seat, but the bump is clearly demonstrated and recirculation and oil well washing work can be carried on through a circular hole. Furthermore, the ground operation personnel can clearly understand the bump circumstance of the underground and adjust the operation procedure timely so as to guarantee the construction quality of well cementing, thus establishing the foundation for the subsequent project and providing security to the reducing of production cost by blocking the hidden dangers such as the channeling and leak of the oil reservoir, etc.
Description
Technical field
The utility model relates to the completion equipment of petroleum industry, and particularly a kind of well cementation impacting seat is applicable to the well cementing operation of various underground water-injection mud.
Technical background
In the completion practice of petroleum drilling engineering, need carry out the cementing well operation to the well bore of finishing drilling, with closed sandwich, allow the crude oil in the oil reservoir flow into down-hole oil production equipment.During cementing well, mainly be to make a bet into the particular location of cement, guarantee that cement paste arrives design attitude by the big or small control well of ground pump pressure.Drop into plug before the cementing or after the cementing, when plug arrived on a kind of device of design attitude, plug and this device were compound, make the pump pressure rising, and this operation is called bruising.The ground construction personnel are by the variation of pump pressure, know that cement paste has put in place or injected to finish, and this device is exactly an impacting seat.Well cementation impacting seat commonly used at present mainly contains two kinds of forms of holder and sliding seat.For holder, can not realize recycling after the bruising; For sliding seat, after the bruising, cut off the shear pin of sliding seat, realize recycling.Its major defect is or bruising shows not obviously, or sliding seat is not opened after the bruising.Petroleum industry publishing house June nineteen ninety publish " the 522nd page of Fig. 4-60.a of the drilling well handbook first volume one book chapter 4 the 7th joint " cementing technology " literary composition discloses a kind of fixed impacting seat, after this instrument bruising, circulation canal is closed, and can not realize recycling and clean-out service; This book chapter 4 the 7th joint " cementing technology " literary composition is the 533rd page simultaneously, and Fig. 4-70 discloses a kind of movable impacting seat, and promptly hollow plug internal construction device during this device bruising, can not overcome the inertia force that tube fluid flows, and bruising shows not obvious.
Summary of the invention
The purpose of this utility model is to be manufactured on a kind of well cementation impacting seat that ground can clearly show down-hole bruising situation.Guarantee the construction level and the quality of cementing well, overcome and avoid problem in the above-mentioned background technology, the problem includes: shortcoming and problem.
Can reach above-mentioned purpose by the present technique solution: a kind of well cementation impacting seat, comprise top connection, top connection is connected with lower contact, is provided with circulation port in top connection, in the assembly space of top connection and lower contact piston is installed.
The utility model compared with prior art, fluid can continue to circulate in tubing string by circulation port after the bruising, solved can not continue after the bruising of fixing glue obturating plug to circulate, movable plug seat bruising shows problem not obvious or that do not open, bruising shows clear and definite, and also can carry out recycling and clean-out service by circulation port.The terrestrial operation personnel can understand the bruising situation of down-hole explicitly, in time adjust operation sequence, thereby guarantee the construction quality of cementing well, and effectively packing oil, gas, water layer are stopped oil reservoir and scurried hidden danger such as groove, leakage, for follow-up engineering lays the foundation.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description: referring to Fig. 1, a kind of well cementation impacting seat comprises top connection 1, and top connection 1 is connected with lower contact 5, be provided with circulation port 2 in top connection 1, piston 4 is installed in the assembly space of top connection 1 and lower contact 5.Top connection 1 be connected with lower contact 5 external diameter of an end less than the internal diameter of lower contact 5, step is arranged, in design cycle hole, the below of step 2; The plug external diameter shape of gauge structure and input matches in the bottom of its link.Piston 4 is provided with shear pin 3, design shear pin hole in the top connection 1 corresponding with shear pin 3.Piston 4 can be fixed in the top connection 1 by shear pin 3.Top connection 1 of the present utility model links to each other with the top tubing string, and lower contact 5 links to each other with the bottom tubing string.When plug arrived top connection 1, the circulation canal in the tubing string of top was closed, and continues to apply hydraulic pressure, and pressure is delivered on the piston 4 by circulation port 2, and when pressure arrived certain value, shear pin 3 was cut off, and piston 4 is descending, and fluid continues to circulate in tubing string by circulation port 2.Overcome the shortcoming that fluid can not circulate in the tubing string of bottom, bruising shows clear and definite.And also can carry out operations such as well-flushing by circulation port 2.
Claims (3)
1, a kind of well cementation impacting seat comprises top connection (1), it is characterized in that top connection (1) is connected with lower contact (5), is provided with circulation port (2) in top connection (1), and piston (4) is installed in the assembly space of top connection (1) and lower contact (5).
2, a kind of well cementation impacting seat according to claim 1, it is characterized in that top connection (1) be connected with lower contact (5) external diameter of an end less than the internal diameter of lower contact (5), step is arranged, in design cycle hole, the below of step (2); The plug external diameter shape of gauge structure and input matches in the bottom of its link.
3, a kind of well cementation impacting seat according to claim 1 is characterized in that piston (4) is provided with shear pin (3), on top connection (1) position corresponding with shear pin (3), and design shear pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03217997 CN2625571Y (en) | 2003-05-30 | 2003-05-30 | Impacting seat for well cementing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03217997 CN2625571Y (en) | 2003-05-30 | 2003-05-30 | Impacting seat for well cementing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2625571Y true CN2625571Y (en) | 2004-07-14 |
Family
ID=34243795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03217997 Expired - Fee Related CN2625571Y (en) | 2003-05-30 | 2003-05-30 | Impacting seat for well cementing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2625571Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307679B (en) * | 2008-04-15 | 2012-06-27 | 中国石化集团胜利石油管理局石油开发中心 | Thin interlayer steam injection thermal production well mixing-proof well completion process |
| CN105019864A (en) * | 2014-06-06 | 2015-11-04 | 中国海洋石油总公司 | Shock resistant pressure bearing device |
| CN107701121A (en) * | 2017-11-03 | 2018-02-16 | 中国海洋石油总公司 | Exempt from brill to exempt to drag for solid completion integral tubing string |
| CN107842339A (en) * | 2016-09-18 | 2018-03-27 | 中国石油天然气股份有限公司 | Oil-water well ash injection method |
-
2003
- 2003-05-30 CN CN 03217997 patent/CN2625571Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307679B (en) * | 2008-04-15 | 2012-06-27 | 中国石化集团胜利石油管理局石油开发中心 | Thin interlayer steam injection thermal production well mixing-proof well completion process |
| CN105019864A (en) * | 2014-06-06 | 2015-11-04 | 中国海洋石油总公司 | Shock resistant pressure bearing device |
| CN107842339A (en) * | 2016-09-18 | 2018-03-27 | 中国石油天然气股份有限公司 | Oil-water well ash injection method |
| CN107701121A (en) * | 2017-11-03 | 2018-02-16 | 中国海洋石油总公司 | Exempt from brill to exempt to drag for solid completion integral tubing string |
| CN107701121B (en) * | 2017-11-03 | 2019-05-28 | 中国海洋石油集团有限公司 | Exempt to bore and exempts to fish out solid completion integral tubing string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |