CN201650147U - Hydraulic casing centralizer - Google Patents
Hydraulic casing centralizer Download PDFInfo
- Publication number
- CN201650147U CN201650147U CN2010200150699U CN201020015069U CN201650147U CN 201650147 U CN201650147 U CN 201650147U CN 2010200150699 U CN2010200150699 U CN 2010200150699U CN 201020015069 U CN201020015069 U CN 201020015069U CN 201650147 U CN201650147 U CN 201650147U
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- main body
- centralizing
- steel sheet
- centralizer
- sliding sleeve
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Abstract
The utility model provides a hydraulic casing centralizer which mainly comprises a main body, sliding bushings, positioning stoppers, pins, seal rings, a centralizing steel sheet and steel sheet lock hoops, wherein liquid inlets are formed on the main body, the main body is connected with the sliding bushings through the pins, the seal rings are arranged between the main body and each sliding bushing to form a closed structure, wedged blocks matched with each other are arranged on the outer circumference of the main body and the inner circumference of each sliding bushing to form a one-way locking structure, and the rigid centralizing steel sheet is circumferentially and uniformly mounted between the upper bushing and the lower bushing. The utility model has the following advantages: the maximum outside diameter of the hydraulic casing centralizer is equal to the outside diameter of a casing, so as to reduce the downward-loading resistance; the hydraulic casing centralizer effectively solves the problem that the common centralizer pushes sand, resulting in sand blockage and pump failure; the hydraulic casing centralizer can effectively improve the centralizing degree of the casing and improves the well-cementing quality, particularly the well-cementing quality of the horizontal well; the length of the centralizing steel sheet is adjustable, so that the centralizing steel sheet is in close fit with the well wall; multiple sets of seal rings are arranged between the main body and the sliding bushings, so as to improve the reliability; and the one-way locking structure is arranged between the main body and the sliding bushing, so as to effectively prevent loosening.
Description
Technical field
The utility model is a kind of fluid pressure type casing stabbing board that is applicable to petroleum horizontal well completion field.
Background technology
Horizontal well is as a kind of means of effective raising oil well recovery ratio, obtained at present using widely, but horizontal cementing is of poor quality is the bottleneck of serious restriction horizontal well advantage performance always, its main cause is, the borehole wall under the horizontal segment sleeve pipe often is partial under action of gravity, centralizer is poor, has a strong impact on cementing quality.Therefore the casing centralizer of how improving the standard is the key of well cementing quality of improving the standard, and centralizer is the effective method that improves the casing centralization degree, but at present the centralizer ubiquity outside dimension that uses is big, be lowered to difficulty, destroy the defective of the borehole wall easily, brings very big difficulty for the horizontal well operation.
Summary of the invention
The quality of horizontal cementing quality is the key factor that influences horizontal productivity.And the key that influences cementing quality is the quality of centralizer.At present the centralizer that generally uses on the scene mostly exist outside dimension big, be lowered to difficulty, destroy shortcoming such as the borehole wall easily, bring very big difficulty for the horizontal well operation.The purpose of this utility model is exactly in order to overcome above-mentioned defective, conveniently be lowered to for the scene provides a kind of, simple to operate, set upright effective, as not destroy borehole wall fluid pressure type casing stabbing board.
This use is novel be achieved in that the fluid pressure type casing stabbing board by body, upper sliding sleeve, low sleeve, sealing ring, pin, set upright steel disc, position block, steel disc locking clip and constitute.Adopt between joint and the body and be threaded, this external surface evenly is provided with inlet opening, be processed with position block on upper sliding sleeve and the low sleeve inner headed face, body exterior upper and lower settings upper sliding sleeve, low sleeve, connect by pin, directly install at upper sliding sleeve, low sleeve and to set upright steel disc, set upright steel disc and upper sliding sleeve, low sleeve is fixed by the steel disc locking clip.There is sealing ring to seal between upper sliding sleeve, low sleeve and the body.
During completion practice, this centralizer is added in the bunch tube, before pressurization, this centralizer external diameter is identical with the cover external diameter of pipe, can not be lowered to sleeve pipe and cause difficulty.After being lowered into assigned address, the turn on pump pressurization, when reaching certain pressure, sliding sleeve is cut off lock pin, and upper sliding sleeve moves axially downwards, and low sleeve upwards moves axially, and sets upright the steel disc bend by pressure, and it is big that the centralizer external diameter becomes, and makes it to be close to the borehole wall and realize casing centralization.Position block control sliding sleeve displacement on the sliding sleeve prevents flexible steel disc overbending, and the wedge that body and slide down put constitutes self-locking device, prevents the sliding sleeve rollback.
Patent of the present invention has the following advantages:
(1) maximum outside diameter is identical with the cover external diameter of pipe, reduces to be lowered to resistance;
(2) prevent that effectively common centralizer from pushing away sand and causing sand plug, problem that can't turn on pump;
(3) can effectively improve the casing centralization degree, improve cementing quality, especially obvious for the horizontal cementing effect;
(4) can regulate and set upright steel disc length and realize and the fitting tightly of the borehole wall;
(5) many cover sealing rings, reliability height are installed between body and the sliding sleeve;
(6) body and sliding sleeve are provided with the one-way locking structure, effectively prevent to become flexible.
Description of drawings
Fig. 1 is the structural representation of fluid pressure type centralizer.
1 joint, 2 bodies, 3 upper sliding sleeves, 4 position blocks, 5 pins, 6 sealing rings, 7 inlet openings, 8 steel disc locking clips, 9 sealing rings 10 are set upright steel disc 11 steel disc locking clips 12 sealing rings 13 inlet openings 14 sealing rings 15 pins 16 position blocks 17 low sleeves 18 joints
The specific embodiment
Now the utility model will be further described in conjunction with Figure of description.
As shown in the figure, body is processed with joint 1,18 in two ends about in the of 2, is connected with pin 5,15 between the outer inlet openings 7,13 that circumferentially evenly are provided with of body 2, body 2 and upper sliding sleeve 3, low sleeve 17.
Be processed with self-locking structure between body 2 and upper sliding sleeve 3, the low sleeve 17, anti-sliding stop.Utilize sealing ring 6,14 to seal between body 2 and upper sliding sleeve 3, the low sleeve 17.Upper sliding sleeve 3 inner headed faces middle part is welded with position block 4, and low sleeve 17 inner headed faces middle part is welded with position block 16.Upper sliding sleeve 3 bottoms are processed with T type groove, and low sleeve 17 tops also are processed with T type groove, set upright steel disc 11 two ends and place groove respectively, and there is the steel disc locking clip 8,11 of welding the outside.
Claims (2)
1. fluid pressure type casing stabbing board, by body (2), upper sliding sleeve (3), low sleeve (17), sealing ring (6) (9) (12) (14), pin (5) (15), set upright steel disc (10), position block (4) (16), steel disc locking clip (8) (11) constitutes, it is characterized in that: joint (1), adopt between joint (18) and body (2) and be threaded, body (2) external surface evenly is provided with inlet opening (7), (13), upper sliding sleeve (3), be processed with position block (4) on low sleeve (17) inner headed face, (16), the outside upper and lower settings upper sliding sleeve of body (2) (3), low sleeve (17), by pin (5), (15) connect, in upper sliding sleeve (3), install between the low sleeve (17) and set upright steel disc (10), set upright steel disc (10) and upper sliding sleeve (3), low sleeve (17) is by steel disc locking clip (8), (11) fixing.
2. fluid pressure type casing stabbing board as claimed in claim 1 is characterized in that: have sealing ring (6), (9), (12), (14) to seal between upper sliding sleeve (3), low sleeve (17) and the body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200150699U CN201650147U (en) | 2010-01-15 | 2010-01-15 | Hydraulic casing centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200150699U CN201650147U (en) | 2010-01-15 | 2010-01-15 | Hydraulic casing centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201650147U true CN201650147U (en) | 2010-11-24 |
Family
ID=43115379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200150699U Expired - Lifetime CN201650147U (en) | 2010-01-15 | 2010-01-15 | Hydraulic casing centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201650147U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787810A (en) * | 2011-05-18 | 2012-11-21 | 中国石油化工集团公司 | Method for centering horizontal well cementing casing pipe |
| CN103670297A (en) * | 2012-09-24 | 2014-03-26 | 中国石油天然气集团公司 | Hydraulic casing centralizer |
| CN104153719A (en) * | 2013-05-13 | 2014-11-19 | 中国石油化工股份有限公司 | Centralizer |
| CN104278955A (en) * | 2014-10-29 | 2015-01-14 | 中国石油集团西部钻探工程有限公司 | Hydraulic casing centralizer with double hydraulic cylinders |
| CN104405300A (en) * | 2014-11-26 | 2015-03-11 | 中国石油集团西部钻探工程有限公司 | Double-hydraulic-cylinder sleeve hydraulic centralizer |
| CN107120073A (en) * | 2017-04-13 | 2017-09-01 | 中国石油集团西部钻探工程有限公司 | Hydraulic casing centralizer |
| CN111335826A (en) * | 2020-04-10 | 2020-06-26 | 大庆长垣能源科技有限公司 | Hydraulic rigid centralizer |
-
2010
- 2010-01-15 CN CN2010200150699U patent/CN201650147U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787810A (en) * | 2011-05-18 | 2012-11-21 | 中国石油化工集团公司 | Method for centering horizontal well cementing casing pipe |
| CN103670297A (en) * | 2012-09-24 | 2014-03-26 | 中国石油天然气集团公司 | Hydraulic casing centralizer |
| CN103670297B (en) * | 2012-09-24 | 2015-10-14 | 中国石油天然气集团公司 | Hydraulic casing pipe centering device |
| CN104153719A (en) * | 2013-05-13 | 2014-11-19 | 中国石油化工股份有限公司 | Centralizer |
| CN104278955A (en) * | 2014-10-29 | 2015-01-14 | 中国石油集团西部钻探工程有限公司 | Hydraulic casing centralizer with double hydraulic cylinders |
| CN104405300A (en) * | 2014-11-26 | 2015-03-11 | 中国石油集团西部钻探工程有限公司 | Double-hydraulic-cylinder sleeve hydraulic centralizer |
| CN107120073A (en) * | 2017-04-13 | 2017-09-01 | 中国石油集团西部钻探工程有限公司 | Hydraulic casing centralizer |
| CN111335826A (en) * | 2020-04-10 | 2020-06-26 | 大庆长垣能源科技有限公司 | Hydraulic rigid centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151118 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |