CN205089234U - Two hydraulic centralizer that push away of curved elbow formula - Google Patents
Two hydraulic centralizer that push away of curved elbow formula Download PDFInfo
- Publication number
- CN205089234U CN205089234U CN201520850928.9U CN201520850928U CN205089234U CN 205089234 U CN205089234 U CN 205089234U CN 201520850928 U CN201520850928 U CN 201520850928U CN 205089234 U CN205089234 U CN 205089234U
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- curved elbow
- hydraulic
- piston
- fixed
- throw
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- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 239000012530 fluid Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The utility model provides a two hydraulic centralizer that push away of curved elbow formula, include hydraulic pressure thrust system and right the system, hydraulic pressure thrust system includes body, pneumatic cylinder and stopping system, is equipped with the pneumatic cylinder on the body, is equipped with the piston in the pneumatic cylinder, and pneumatic cylinder and piston act on rightting the system through the intraductal pressure of suppressing, realizes rightting, and the stopping system realizes forever rightting after can ensureing intraductal pressure release. The system of rightting includes throw -out collar, the curved elbow of locating piece and at least 4 groups, and curved elbow evenly distributed is on the body circumference, and the throw -out collar links to each other with the piston, and the locating piece is fixed in the middle of the body, and the one end of curved elbow is fixed on the throw -out collar, and the other end is fixed on the locating piece, have the contained angle between curved elbow and the body, the system start -up can be realized rightting by very little tripping force. Two -way hydraulic system can ensure to right the system does not have axial displacement, and the design of unique bending structure in advance makes the tripping force of the system that rights littleer, and this two hydraulic centralizer that push away of curved elbow formula is applicable to horizontal well, highly deviated well's sleeve pipe and rights.
Description
Technical field
The utility model belongs to hydraulic centralizing device field, especially relates to a kind of curved elbow formula pair and pushes away hydraulic centralizing device.
Background technology
In prior art, the casing stabbing board often used mainly contains elastic centralizer and rigid centralizer.In horizontal well and High angle well, because pipe string is heavier, the elastic steel sheet of elastic centralizer is easy to deform, and righting effect is also bad.Rigid centralizer (comprising rolling wheel centralizer) adds the external diameter of whole pipe string, enters difficulty under causing pipe string.If borehole condition is not ideal enough, is easy to cause and is hampered.In horizontal well and high angle hole, due under enter process centralizer and against the borehole wall all the time, scraping well, be easy to cause silt particle to pile up, causing cannot turn on pump.In " sugarcoated haws " and " pregnant " well section, these two kinds of centralizers cannot play centralizing function more.For technological deficiency existing in prior art, research and develop a kind of enter well time do not increase the outside dimension of pipe string, enter under being easy to pipe string, after pipe string puts in place, rely on hydraulic thrust, realizing pipe string curved elbow formula placed in the middle, two to push away hydraulic centralizing device be a problem demanding prompt solution.
Summary of the invention
In view of this, the utility model is intended to propose a kind of structure curved elbow formula simple, easy to use pair and pushes away hydraulic centralizing device, is particularly useful in the solid completion practice of oil and gas industry.
For achieving the above object, the technical solution of the utility model is achieved in that
A kind of curved elbow formula is two pushes away hydraulic centralizing device, comprises hydraulic thrust system and centralizing system, described hydraulic thrust system comprises body, hydraulic cylinder and retaining system, be provided with two described hydraulic cylinders on the body, piston is provided with in described hydraulic cylinder, between described piston and hydraulic cylinder, hydraulic pressure cavity volume is equipped with between piston and body, gap is there is between described piston and body, and by the sealing of " O " RunddichtringO, the well cementation compression packer that described retaining system is ZL201420191847.8 with reference to the patent No. designs, the elastic collar that described retaining system comprises protection box and is arranged in described protection box, sawtooth draw-in groove is provided with on the body with described elastic collar corresponding section, described protection box is arranged on the top of described piston, enable elastic collar freely movable, move to the sawtooth draw-in groove place on body together with elastic collar under the effect of thrust, elastic collar shrinks, enter sawtooth draw-in groove, hydraulic cylinder is made to do one-way movement, limit its retraction, play the effect of retaining.Described two hydraulic cylinders are equipped with and cut off, by described cutting off, piston is fixed on hydraulic cylinder, cuts off when well head is suppressed after cutting off, two piston actions simultaneously, promotion retaining system and throw-out collar axially move along body to center, promote the distortion of curved elbow and realize righting function.Described centralizing system comprises throw-out collar, locating piece and the curved elbow of at least 4 groups, described curved elbow is evenly distributed on body circumferentially, guarantee the righting effect placed in the middle of sleeve pipe, ensure that the circulation area that well is starched simultaneously, described throw-out collar is connected with piston, described locating piece is fixed in the middle of body, carry out spacing to forward piston stroke, and distortion prestressing force angle is provided, one end of described curved elbow is fixed on throw-out collar, the other end is fixed on locating piece, has angle between described curved elbow and body, and very little tripping force can realize centralizing system and start.
Further, be also provided with Adjusting bolt Adjusting screw on the body, described Adjusting bolt Adjusting screw is connected with body by screw thread, and controls each part fits gap by screw thread rotation.
Further, the upper end of described body is connected with bunch tube by top connection, and described top connection upper end is casing threads box, be connected with bunch tube, lower end adopts casing threads to be connected with body, and the lower end of described body is casing threads pin thread, is connected with bunch tube.
Further, described curved elbow is 4-6 group, adopts and has the production of certain thickness high-quality steel bar, often organize between curved elbow and pass through pinned connection.
Further, described hydraulic cylinder and body are fixed by trip bolt.
Relative to prior art, curved elbow formula described in the utility model pair pushes away hydraulic centralizing utensil following advantage: this centralizer entire outer diameter is little, enter under being convenient to bunch tube, after pipe string puts in place, relying on builds the pressure makes piston movement, promotes overall centralizing system and expands, support pipe string placed in the middle, two-way hydraulic cylinder can guarantee that centralizing system is without axial displacement, and unique pre-bent structure design makes the tripping force of centralizing system less, is applicable to the casing centering of horizontal well, high angle hole; There is the advantages such as global design precision, righting be effective, simple to operate, safe and reliable.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation before the utility model righting;
Fig. 2 is the structural representation after the utility model righting.
Description of reference numerals:
1-top connection, 2-body, 3-hydraulic cylinder, 4-piston, 5-cuts off, 6-Adjusting bolt Adjusting screw, 7-throw-out collar, 8-locating piece, the curved elbow of 9-.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As illustrated in fig. 1 and 2, a kind of curved elbow formula is two pushes away hydraulic centralizing device, comprises hydraulic thrust system and centralizing system; Described hydraulic thrust system comprises body 2, hydraulic cylinder 3 and retaining system, described body 2 is provided with two described hydraulic cylinders 3, described hydraulic cylinder 3 is fixed by trip bolt with body 2, piston 4 is provided with in described hydraulic cylinder 3, between described piston 4 and hydraulic cylinder 3, between piston 4 and body 2, be equipped with hydraulic pressure cavity volume, gap is there is between described piston 4 and body 2, and by the sealing of " O " RunddichtringO, the well cementation compression packer that described retaining system is ZL201420191847.8 with reference to the patent No. designs.The elastic collar that described retaining system comprises protection box and is arranged in described protection box; described body 2 is provided with sawtooth draw-in groove with described elastic collar corresponding section; described protection box is arranged on the top of described piston 4; enable elastic collar freely movable, under the effect of thrust, move to the sawtooth draw-in groove place on body 2 together with elastic collar, elastic collar shrinks; enter sawtooth draw-in groove; make hydraulic cylinder 3 do one-way movement, limit its retraction, play the effect of retaining.Described two hydraulic cylinders 3 are equipped with and cut off 5, cut off 5 by described piston 4 is fixed on hydraulic cylinder 3, cut off when well head is suppressed after cutting off 5, two pistons 4 actions simultaneously, promotion retaining system and throw-out collar 7 axially move along body 2 to center, promote the distortion of curved elbow 9 and realize righting function.The upper end of described body 2 is connected with bunch tube by top connection 1, described top connection 1 upper end is casing threads box, be connected with bunch tube, lower end adopts casing threads to be connected with body 2, the lower end of described body 2 is casing threads pin thread, is connected with bunch tube, and described body 2 is also provided with Adjusting bolt Adjusting screw 6, described Adjusting bolt Adjusting screw 6 is connected with body 2 by screw thread, and controls each part fits gap by screw thread rotation.
Described centralizing system comprises throw-out collar 7, the curved elbow 9 of locating piece 8 and at least 4 group, described curved elbow 9 is evenly distributed on body 2 circumferentially, guarantee the righting effect placed in the middle of sleeve pipe, ensure that the circulation area that well is starched simultaneously, preferably, described curved elbow 9 is 4-6 group, employing has certain thickness high-quality steel bar and produces, often organize between curved elbow 9 and pass through pinned connection, described throw-out collar 7 is connected with piston 4, described locating piece 8 is fixed in the middle of body 2, carry out spacing to piston 4 process, and distortion prestressing force angle is provided, one end of described curved elbow 9 is fixed on throw-out collar 7, the other end is fixed on locating piece 8, between described curved elbow 9 and body 2, there is certain angle, very little tripping force can realize centralizing system and start.
The course of work of this example: after pipe string puts in place, dependence builds the pressure and piston 4 is moved, and promotes centralizing system and expands, support pipe string placed in the middle, promote centralizing system and realize righting, retaining system realizes permanent righting after can guaranteeing to manage interior pressure release, and bidirectional hydraulic push system acts on simultaneously, promote curved elbow 9 and realize righting function, axial displacement is not had after the strong point can be made to start, safer, reliably.
This curved elbow formula is two to be pushed away under hydraulic centralizing device is convenient to the pipe string of horizontal well and high angle hole, and significantly improves drilling fluid, especially in " sugarcoated haws " " pregnant " well, thus improves cementing quality.The maximum advantage of this hydraulic centralizing device adopts two-way fluid cylinder to promote, and when centralizing system launches, the strong point is without the need to producing displacement, and other fluid pressure type centralizer strong point can be avoided to be absorbed in ground layer gap cannot be moved, and the situation causing righting effect bad occurs.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. curved elbow formula is two pushes away a hydraulic centralizing device, it is characterized in that: comprise hydraulic thrust system and centralizing system;
Described hydraulic thrust system comprises body, hydraulic cylinder and retaining system, be provided with two described hydraulic cylinders on the body, piston is provided with in described hydraulic cylinder, between described piston and hydraulic cylinder, hydraulic pressure cavity volume is equipped with between piston and body, gap is there is between described piston and body, and by the sealing of " O " RunddichtringO, the elastic collar that described retaining system comprises protection box and is arranged in described protection box, sawtooth draw-in groove is provided with on the body with described elastic collar corresponding section, described protection box is arranged on the top of described piston, described two hydraulic cylinders are equipped with and cut off, by described cutting off, piston is fixed on hydraulic cylinder,
Described centralizing system comprises throw-out collar, locating piece and the curved elbow of at least 4 groups, described curved elbow is evenly distributed on body circumferentially, described throw-out collar is connected with piston, described locating piece is fixed in the middle of body, one end of described curved elbow is fixed on throw-out collar, the other end is fixed on locating piece, has angle between described curved elbow and body.
2. the curved elbow formula of one according to claim 1 is two pushes away hydraulic centralizing device, and it is characterized in that: be also provided with Adjusting bolt Adjusting screw on the body, described Adjusting bolt Adjusting screw is connected with body by screw thread.
3. the curved elbow formula of one according to claim 1 and 2 is two pushes away hydraulic centralizing device, it is characterized in that: the upper end of described body is connected with bunch tube by top connection, described top connection upper end is casing threads box, be connected with bunch tube, lower end adopts casing threads to be connected with body, the lower end of described body is casing threads pin thread, is connected with bunch tube.
4. the curved elbow formula of one according to claim 3 is two pushes away hydraulic centralizing device, it is characterized in that: described curved elbow is 4-6 group, adopts and have the production of certain thickness high-quality steel bar, often organize between curved elbow and pass through pinned connection.
5. the curved elbow formula of one according to claim 4 is two pushes away hydraulic centralizing device, it is characterized in that: described hydraulic cylinder and body are fixed by trip bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520850928.9U CN205089234U (en) | 2015-10-29 | 2015-10-29 | Two hydraulic centralizer that push away of curved elbow formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520850928.9U CN205089234U (en) | 2015-10-29 | 2015-10-29 | Two hydraulic centralizer that push away of curved elbow formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089234U true CN205089234U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520850928.9U Expired - Fee Related CN205089234U (en) | 2015-10-29 | 2015-10-29 | Two hydraulic centralizer that push away of curved elbow formula |
Country Status (1)
| Country | Link |
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| CN (1) | CN205089234U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178882A (en) * | 2015-10-29 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Elbow-type dual-thrust hydraulic centralizer |
| CN114086898A (en) * | 2022-01-17 | 2022-02-25 | 山东健源石油工程技术有限公司 | Casing centralizer for well cementation construction and method |
-
2015
- 2015-10-29 CN CN201520850928.9U patent/CN205089234U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178882A (en) * | 2015-10-29 | 2015-12-23 | 中国石油集团渤海钻探工程有限公司 | Elbow-type dual-thrust hydraulic centralizer |
| CN114086898A (en) * | 2022-01-17 | 2022-02-25 | 山东健源石油工程技术有限公司 | Casing centralizer for well cementation construction and method |
| CN114086898B (en) * | 2022-01-17 | 2022-03-29 | 山东健源石油工程技术有限公司 | Casing centralizer for well cementation construction and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210809 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: No.106 Huanghai Road, Binhai New Economic and Technological Development Zone, Tianjin 300457 Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |