CN200946464Y - Rigid centralizer for straight well and directional well - Google Patents
Rigid centralizer for straight well and directional well Download PDFInfo
- Publication number
- CN200946464Y CN200946464Y CN 200620021635 CN200620021635U CN200946464Y CN 200946464 Y CN200946464 Y CN 200946464Y CN 200620021635 CN200620021635 CN 200620021635 CN 200620021635 U CN200620021635 U CN 200620021635U CN 200946464 Y CN200946464 Y CN 200946464Y
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- well
- central tube
- cone
- ball seat
- piston
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Abstract
A rigid centralizer for straight well and directional well relates to an oilfield underground tool centralizing device designed to overcome disadvantages of present centralizers that have large outer diameters but small centralizing force. A liquid in-out hole is arranged in the center pipe (4) and a saw-tooth button is arranged on the center surface of the center pipe; a saw-tooth button that meshes the center pipe (4) is also arranged in the locking ring (6). A sitting-seal piston (5), the locking ring (6) and the cone (9) are orderly arranged on the center pipe (4). The sitting-seal piston (5) is connected with the cone (9) through the locking ring (6). A steel ball (11) is positioned in the ball seat (8); the ball seat (8) is connected with an outer sleeve (2) through a unseal pin (7). The center pipe (4) is connected with the cone (9) through a positioning pin (10). The utility model is mainly used for straight well and directional well and has a simple structure, so can be put into the well or taken out of the well conveniently at multiple levels. Besides, the seal performance of the seal device rubber cylinder is improved and the service life is prolonged.
Description
Technical field: the utility model relates to oil field downhole tool erection device, belongs to a kind of waterpower compression rigidity centralizer.
Background technology: at present, to set upright tool applications very general as a kind of for centralizer, and centralizer has spring, nylon formula, rubber type, vane type, semielliptic spring formula, clamping hoop type etc. at present.Wherein spring, semielliptic spring formula centralizer are to set upright down-hole string by the elastic force of spring, and nylon formula, rubber type and vane type and clamping hoop type centralizer are to assign to set upright down-hole string by larger-diameter protuberance.These centralizer external diameters are big, and it is little to set upright strength, are difficult to satisfy the big radially needs of uprighting force of oblique straight well, directional well tubing string.
Summary of the invention: the purpose of this utility model is exactly the problem at above-mentioned existence, invents a kind of novel oblique straight well, directional well rigidity centralizer, and its external diameter is less, uprighting force is big and can multistagely use.
The utility model is achieved through the following technical solutions.The utility model mainly by top connection, overcoat, " O " RunddichtringO, central tube, set piston element and form, wherein top connection is tightly connected by sawtooth button, " O " RunddichtringO and overcoat, set piston by the sealing between " O " RunddichtringO realization and overcoat and the central tube, it is characterized in that: it also is made up of retaining ring, deblocking pin, ball seat, cone, position-limitting pin, steel ball, lower splice component; Wherein central tube is connected with lower contact with top connection by the plain end oil well pipe screw thread, central tube has liquid inlet/outlet and its middle part surface has the sawtooth button, the inside of retaining ring also has and the intermeshing sawtooth button of central tube, setting piston, retaining ring and cone is sleeved on the central tube successively, and set between piston and the cone and connect by retaining ring, steel ball seat is in ball seat, and ball seat is connected by the deblocking pin with overcoat, and central tube is connected by position-limitting pin with cone.
Ball seat is ball seat radially, and three ball seats design for monomer structure, are installed in respectively in the gathering sill of lower contact.
The utility model compared with prior art has following advantage:
It is simple in structure, removes conveniently; Hydraulic pressure is sat card simultaneously, and upper lifting pipe post unfreezing structure Design can multistagely be used, and helps improving the sealing performance and the application life of packing element.
Description of drawings: Fig. 1 is a structure diagram of the present utility model.
The specific embodiment: the utility model is described further below in conjunction with accompanying drawing: the utility model mainly by top connection 1, overcoat 2, " O " RunddichtringO 3, central tube 4, set piston 5 parts and form, wherein top connection 1 is tightly connected with overcoat 2 by sawtooth button, " O " RunddichtringO 3, set piston 5 by the sealing between 3 realizations of " O " RunddichtringO and overcoat 2 and the central tube 4, it is characterized in that: it also is made up of retaining ring 6, deblocking pin 7, ball seat 8, cone 9, position-limitting pin 10, steel ball 11, lower contact 12 parts; Wherein central tube 4 is connected with lower contact 12 with top connection 1 by the plain end oil well pipe screw thread, central tube 4 has liquid inlet/outlet and its middle part surface has the sawtooth button, the inside of retaining ring 6 also has and central tube 4 intermeshing sawtooth buttons, setting piston 5, retaining ring 6 and cone 9 is sleeved on the central tube 4 successively, and set between piston 5 and the cone 9 and connect by retaining ring 6, ball seat 8 is connected by deblocking pin 7 with overcoat 2 11 of steel balls in ball seat 8, and central tube 4 is connected by position-limitting pin 10 with cone 9.
When site operation uses, at first this device is lowered to desired depth with oil pipe, add hydraulic pressure in the central tube 4, highly pressurised liquid acts on through the fluid hole of central tube 4 and sets on the piston 5, and it is descending to set piston 5, it is descending to promote cone 9, drive simultaneously retaining ring 6 descending with sawtooth buttons central tube 4 middle parts the locking that is meshing with each other, the retaining of realization cone 9, cone 9 jack-up steel balls 11, steel ball 11 is close on the casing wall, down-hole string is played the effect of setting upright.During deblocking, the upper lifting pipe post, drive central tube 4, overcoat 2, ball seat 8 move upward together, when the frictional force of steel ball 11 and internal surface of sleeve pipe during greater than the anti-shearing force of deblocking pin 7, cut off deblocking pin 7, ball seat 8 is descending, steel ball 11 is regained, and trips out pit shaft with down-hole string.
Claims (2)
1, a kind of novel oblique straight well, directional well rigidity centralizer, it is mainly by top connection (1), overcoat (2), " O " RunddichtringO (3), central tube (4), setting piston (5) parts forms, wherein top connection (1) is by the sawtooth button, " O " RunddichtringO (3) is tightly connected with overcoat (2), set piston (5) by the sealing between " O " RunddichtringO (3) realization and overcoat (2) and the central tube (4), it is characterized in that: it is also by retaining ring (6), deblocking pin (7), ball seat (8), cone (9), position-limitting pin (10), steel ball (11), lower contact (12) parts are formed; Wherein central tube (4) is connected with lower contact (12) with top connection (1) by the plain end oil well pipe screw thread, central tube (4) has liquid inlet/outlet and its middle part surface has the sawtooth button, the inside of retaining ring (6) also has and the intermeshing sawtooth button of central tube (4), set piston (5), retaining ring (6) and cone (9) are sleeved on the central tube (4) successively, and set between piston (5) and the cone (9) and connect by retaining ring (6), steel ball (11) seat is in ball seat (8), ball seat (8) is connected by deblocking pin (7) with overcoat (2), and central tube (4) is connected by position-limitting pin (10) with cone (9).
2, a kind of novel oblique straight well according to claim 1, directional well rigidity centralizer, its feature also is: ball seat (8) is ball seat radially, and three ball seats (8) are installed in respectively in the gathering sill of lower contact (12) for monomer structure designs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620021635 CN200946464Y (en) | 2006-09-08 | 2006-09-08 | Rigid centralizer for straight well and directional well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620021635 CN200946464Y (en) | 2006-09-08 | 2006-09-08 | Rigid centralizer for straight well and directional well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200946464Y true CN200946464Y (en) | 2007-09-12 |
Family
ID=38733524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620021635 Expired - Fee Related CN200946464Y (en) | 2006-09-08 | 2006-09-08 | Rigid centralizer for straight well and directional well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200946464Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704882A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Hydraulic forced centralizer |
| CN103015915A (en) * | 2012-12-07 | 2013-04-03 | 东营百华石油技术开发有限公司 | Hydraulic power sleeve centralizer |
| CN103485744A (en) * | 2012-06-13 | 2014-01-01 | 中国石油天然气股份有限公司 | Directional well zonal injection centralizing packer |
| CN104033115A (en) * | 2014-05-20 | 2014-09-10 | 廊坊市志宏协佳石油技术有限公司 | Casing pipe centered locator and working method thereof |
-
2006
- 2006-09-08 CN CN 200620021635 patent/CN200946464Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704882A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Hydraulic forced centralizer |
| CN103485744A (en) * | 2012-06-13 | 2014-01-01 | 中国石油天然气股份有限公司 | Directional well zonal injection centralizing packer |
| CN103485744B (en) * | 2012-06-13 | 2016-01-20 | 中国石油天然气股份有限公司 | Directional well zonal injection centralizing packer |
| CN103015915A (en) * | 2012-12-07 | 2013-04-03 | 东营百华石油技术开发有限公司 | Hydraulic power sleeve centralizer |
| CN104033115A (en) * | 2014-05-20 | 2014-09-10 | 廊坊市志宏协佳石油技术有限公司 | Casing pipe centered locator and working method thereof |
| CN104033115B (en) * | 2014-05-20 | 2019-11-29 | 廊坊市志宏协佳石油技术有限公司 | A kind of casing centralization locator and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070912 Termination date: 20140908 |
|
| EXPY | Termination of patent right or utility model |