CN204082032U - A kind of hydroelastic system centralizer - Google Patents
A kind of hydroelastic system centralizer Download PDFInfo
- Publication number
- CN204082032U CN204082032U CN201420500636.8U CN201420500636U CN204082032U CN 204082032 U CN204082032 U CN 204082032U CN 201420500636 U CN201420500636 U CN 201420500636U CN 204082032 U CN204082032 U CN 204082032U
- Authority
- CN
- China
- Prior art keywords
- spring leaf
- central tube
- fluid cylinder
- piston
- top connection
- 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
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a kind of oil field drilling completion technique field, particularly a kind of hydroelastic system centralizer.The top connection lower end of this device is threaded central tube, fluid cylinder external threading is connected on top connection outer wall, piston be arranged on central tube and fluid cylinder overlap between and by sealing ring and central tube, liquid liner packing, fixed by pin between piston and top connection, piston withstands on pushing ring, retaining ring is installed inside pushing ring, retaining ring set is contained on central tube, pushing ring lower end withstands on spring leaf, spring leaf is sleeved on central tube, spring leaf is arranged between fluid cylinder cover and spring leaf base, spring leaf is spacing with the keyway on spring leaf base by fluid cylinder cover, spring leaf base is connected to central tube lower end.The utility model achieves righting rigidity foot, and righting is effective, can reducing, and greatly reduce bunch tube and to go into the well difficulty, spring pressure is swollen, and external diameter is large, can play centralizing function in irregular borehole, expanding well to bunch tube, improves cementing quality.
Description
Technical field:
The utility model relates to a kind of oil field drilling completion technique field, particularly a kind of hydroelastic system centralizer.
Background technology:
Branch horizontal well branch well hole needs centralizer to bunch tube righting in setting of casing process, however common elastic centralizer righting insufficient rigidity, righting weak effect; And rigid centralizer exists that external diameter is large, enter under difficulty, be easily hampered, the problem of not reducing, the demand of site operation well can not be met.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of hydroelastic system centralizer, the arrangement achieves righting rigidity foot, righting is effective, can reducing, greatly reduce bunch tube to go into the well difficulty, spring pressure is swollen, and external diameter is large, can play centralizing function in irregular borehole, expanding well to bunch tube, improves cementing quality.Overcome existing elastic centralizer righting insufficient rigidity, righting weak effect, rigid centralizer exist that external diameter is large, enter under difficulty, be easily hampered, the deficiency of the not problem of reducing.
Technical solution adopted in the utility model is: a kind of hydroelastic system centralizer, comprises top connection, fluid cylinder cover and central tube, top connection lower end is threaded central tube, fluid cylinder external threading is connected on top connection outer wall, piston be arranged on central tube and fluid cylinder overlap between and by sealing ring and central tube, liquid liner packing, fixed by pin between piston and top connection, piston withstands on pushing ring, retaining ring is installed inside pushing ring, retaining ring set is contained on central tube, pushing ring lower end withstands on spring leaf, spring leaf is sleeved on central tube, spring leaf is arranged between fluid cylinder cover and spring leaf base, spring leaf is spacing with the keyway on spring leaf base by fluid cylinder cover, spring leaf base is connected to central tube lower end.
The beneficial effects of the utility model are: the utility model promotes owing to have employed piston the mode that spring leaf carries out righting, thus there is righting rigidity foot, righting be effective, can the advantage of reducing, greatly reduce bunch tube to go into the well difficulty, spring pressure is swollen, and external diameter is large, centralizing function can be played to bunch tube in irregular borehole, expanding well, improve cementing quality.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention:
As shown in Figure 1, a kind of hydroelastic system centralizer, comprises top connection 1, fluid cylinder cover 2 and central tube 7, top connection 1 lower end is threaded central tube 7, fluid cylinder cover 2 is threaded on top connection 1 outer wall, piston 8 be arranged on central tube 7 and fluid cylinder overlap 2 between and by sealing ring and central tube 7, fluid cylinder cover 2 sealing, fixed by pin 5 between piston 8 and top connection 1, piston 8 lower end withstands on pushing ring 3, retaining ring 9 is installed inside pushing ring 3, retaining ring 9 is sleeved on central tube 7, with the locking threaded engagement on central tube 7, pushing ring 3 lower end withstands on spring leaf 4, spring leaf 4 is sleeved on central tube 7, spring leaf 4 is arranged between fluid cylinder cover 2 and spring leaf base 6, spring leaf 4 is spacing with the keyway on spring leaf base 6 by fluid cylinder cover 2, spring leaf base 6 is connected to central tube 7 lower end.
Centralizer is in the process of going into the well, and spring leaf 4 is in deployed condition.After bunch tube assigns projected depth, suppress in pipe, when pressure reaches certain value, pin 5 is cut off, and piston 8 is descending by hydraulic pressure, promote retaining ring 9, pushing ring 3, and then spring leaf 4 is strutted by compression, form cage construction, the spring leaf 4 strutted is attached on the borehole wall, originally the sleeve pipe lying in borehole wall side because of Action of Gravity Field departs under the effect of spring leaf 4 elastic force, forms the passage of continuous print cement paste circulation.Retaining ring 9 single-way moving, and keep engaging reliably with the locking screw thread on central tube 7, makes spring leaf 4 be in all the time by the state compressed and can not reset, thus ensures that hydraulic centralizing utensil has good righting effect.
Be understandable that, above about specific descriptions of the present utility model, the technical scheme described by the utility model embodiment is only not limited to for illustration of the utility model, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, to reach identical technique effect; Needs are used, all within protection domain of the present utility model as long as meet.
Claims (1)
1. a hydroelastic system centralizer, comprises top connection (1), fluid cylinder cover (2) and central tube (7), it is characterized in that: top connection (1) lower end is threaded central tube (7), fluid cylinder cover (2) is threaded on top connection (1) outer wall, piston (8) to be arranged between central tube (7) and fluid cylinder cover (2) and by sealing ring and central tube (7), fluid cylinder cover (2) seals, fixed by pin (5) between piston (8) and top connection (1), piston (8) lower end withstands on pushing ring (3), pushing ring (3) inner side is provided with retaining ring (9), retaining ring (9) is sleeved on central tube (7), pushing ring (3) lower end withstands on spring leaf (4), spring leaf (4) is sleeved on central tube (7), spring leaf (4) is arranged between fluid cylinder cover (2) and spring leaf base (6), spring leaf (4) is spacing with the keyway on spring leaf base (6) by fluid cylinder cover (2), spring leaf base (6) is connected to central tube (7) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420500636.8U CN204082032U (en) | 2014-09-02 | 2014-09-02 | A kind of hydroelastic system centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420500636.8U CN204082032U (en) | 2014-09-02 | 2014-09-02 | A kind of hydroelastic system centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082032U true CN204082032U (en) | 2015-01-07 |
Family
ID=52174763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420500636.8U Expired - Fee Related CN204082032U (en) | 2014-09-02 | 2014-09-02 | A kind of hydroelastic system centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082032U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108240188A (en) * | 2016-12-24 | 2018-07-03 | 中石化石油工程技术服务有限公司 | Wait the skeleton anchor mechanism of hole diameters expansion sleeve |
| CN110080696A (en) * | 2019-06-04 | 2019-08-02 | 武汉金博锐精密制造有限公司 | A kind of novel hydropower centralizer |
| CN117823060A (en) * | 2024-03-05 | 2024-04-05 | 河北上善石油机械有限公司 | Rigid sleeve centralizer with limiting mechanism |
-
2014
- 2014-09-02 CN CN201420500636.8U patent/CN204082032U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240188A (en) * | 2016-12-24 | 2018-07-03 | 中石化石油工程技术服务有限公司 | Wait the skeleton anchor mechanism of hole diameters expansion sleeve |
| 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 |
| CN110080696A (en) * | 2019-06-04 | 2019-08-02 | 武汉金博锐精密制造有限公司 | A kind of novel hydropower centralizer |
| CN117823060A (en) * | 2024-03-05 | 2024-04-05 | 河北上善石油机械有限公司 | Rigid sleeve centralizer with limiting mechanism |
| CN117823060B (en) * | 2024-03-05 | 2024-04-30 | 河北上善石油机械有限公司 | Rigid sleeve centralizer with limiting mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204326985U (en) | A kind of coiled tubing speed tubing string | |
| CN204082032U (en) | A kind of hydroelastic system centralizer | |
| CN104358524A (en) | Coiled tubing speed pipe column and liquid draining and gas collecting method | |
| CN100538003C (en) | The expansion sieve tube hanging method | |
| CN202882841U (en) | Pipe external packer capable of being self-expandable when encountering water or oil | |
| CN202946100U (en) | Halfway well cementation self-grouting float collar | |
| CN203594406U (en) | Novel two-direction-setting packer | |
| CN201786314U (en) | Embedded blowout preventer of sucker rod | |
| CN204113206U (en) | A kind of Self-expandable packer with compression protection mechanism | |
| CN204299572U (en) | A kind of horizontal well is looked for and is leakage altered tubing string | |
| CN203547657U (en) | Circulating valve | |
| CN102808604B (en) | Pressure break high pressure packing filling body | |
| CN104564625A (en) | Rod-type oil-well pump | |
| CN204344060U (en) | The packer that fluid pressure type can repeatedly set | |
| CN201354616Y (en) | Horizontal well separate injection packer | |
| CN201705278U (en) | Naked eye self-expansion annular packer | |
| CN204899823U (en) | Sealing core drilling safety joint with adjustable | |
| CN203547574U (en) | Safety joint of sliding sleeve | |
| CN203362107U (en) | Salvageable and drillable suspension bridge plug | |
| CN201953351U (en) | Sliding sleeve oil drainage device | |
| CN202755930U (en) | Drift diameter type location device | |
| CN203948039U (en) | A kind of sleeve pipe suspension device | |
| CN203499626U (en) | Rod-type rotation oil tube blanking plug | |
| CN204082083U (en) | A kind of hydraulic pressure opening tubing string compression packer | |
| CN203961891U (en) | A kind of suspension type well-control pressure-testing plug |
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: 20150107 Termination date: 20150902 |
|
| EXPY | Termination of patent right or utility model |