CN201273150Y - Hydraulic releasing tool for well completion - Google Patents
Hydraulic releasing tool for well completion Download PDFInfo
- Publication number
- CN201273150Y CN201273150Y CNU2008201389055U CN200820138905U CN201273150Y CN 201273150 Y CN201273150 Y CN 201273150Y CN U2008201389055 U CNU2008201389055 U CN U2008201389055U CN 200820138905 U CN200820138905 U CN 200820138905U CN 201273150 Y CN201273150 Y CN 201273150Y
- Authority
- CN
- China
- Prior art keywords
- ball seat
- groove
- hole
- plunger
- lower contact
- 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 - Lifetime
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Abstract
A hydraulic releasing tool for well completion is provided, wherein the outer surface of a body is in a step form, and the lower end thereof is provided with a radial through-hole, a lower joint is sleeved on the lower end of the body, and a ring-shaped groove is arranged on the lower joint corresponding to the radial through-hole. A plunger piston is installed in the radial through-hole on the lower end of the body and the groove of the lower joint, and the plunger piston is a step cylinder with smaller upper portion and larger lower portion, and the size of the upper end thereof is equal to the through-hole of the body and the groove on the lower joint, and the plunger piston is fixed in the through-hole of the body by the lower end of a ball seat. A groove is processed on the lower end of the ball seat from the position corresponding to a position smaller than 1/2 large end size of the plunger piston, the width of the groove is larger than the large end size of the plunger piston, and the depth of the groove is larger than the depth of the ring-shaped groove of the lower joint. The inner cavity of the body and the outer surface of the ball seat are both provided with steps, the body and the ball seat are matched corresponding to the larger diameter and smaller diameter of the steps, and a retainer ring sleeved on the ball seat is fixed on the middle portion of the ball seat by a shear pin, and is rightly clamped on the step of the inner cavity of the body. The hydraulic releasing tool is used for well completion work which does not allow to release by adopting the back-off mode in the well completion of branch wells, horizontal wells and side track horizontal wells in oil-gas fields.
Description
Technical field
The utility model relates to the releasing tool that uses in the oil drilling completion practice, belongs to the downhole tool class.
Background technology
When Multilateral Wells, horizontal well, sidetrack horizontal well completion process, after being lowered to completion tubular column, sometimes because some special reasons, do not allow situations such as rotation as the completion tubular string, and can't adopt the back-off structure of giving up, this moment is the other mode of giving up of needs just.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, easy to use, need not back-off can realize the hydraulic releasing tool of giving up smoothly.
The utility model mainly is made up of top connection, body, ball seat, baffle ring, shear pin, plunger, lower contact, and top connection links to each other by screw thread with body, and ball seat is positioned at chamber body.This external surface be shaped as stairstepping, lower contact is sleeved on the body lower end, the body lower end is evenly distributed with radial direction through hole, the corresponding radial direction through hole of lower contact position is processed with annular groove; Plunger is installed in the groove of the radial direction through hole of body lower end and lower contact; Plunger to be shaped as up-small and down-big ladder cylindrical, the size of plunger upper end is equal to or slightly less than the through hole and the lower contact groove of body, the ball seat lower end is fixed on plunger in the through hole of body, the ball seat lower end is processed with groove from correspondence less than the big end size positions of 1/2 plunger, recess width is greater than the big end size of plunger, and depth of groove is greater than the lower contact annular groove degree of depth; Chamber body has step, and the ball seat external surface also has step, and body is suitable with the large and small footpath of corresponding step of ball seat, and the baffle ring that shear pin will be sleeved on the ball seat is fixed on the ball seat medium position, and just is stuck in the interior step place of body.
Plunger is connected releasing tool in the utility model design with completion tubular column, and after pitching built the pressure, ball seat moved downward, and plunger falls in the groove of ball seat, and releasing tool body and lower contact are thrown off, thereby realizes giving up.The utlity model has simple in structure, easy to operate, the reliable advantage of giving up, especially, can give up by hydraulic way safety for adopting back-off to implement to give up under the operation situation.
Description of drawings
Fig. 1 is the utility model structural representation
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
As shown in drawings, the utility model mainly is made up of top connection (1), body (2), ball seat (3), baffle ring (4), shear pin (5), plunger (6), lower contact (7), top connection (1) links to each other by screw thread with body (2), and ball seat (3) is positioned at body (2) inner chamber.Body (2) external surface be shaped as stairstepping, lower contact (7) is sleeved on body (2) lower end, body (2) lower end is evenly distributed with radial direction through hole, the corresponding radial direction through hole of lower contact (7) position is processed with groove; Plunger (6) is installed in the groove of the radial direction through hole of body (2) lower end and lower contact (7).Plunger (6) to be shaped as up-small and down-big ladder cylindrical, the size of plunger (6) upper end is equal to or slightly less than the through hole and lower contact (7) groove of body (2), ball seat (3) lower end is fixed on plunger (6) in the through hole of body (2), ball seat (3) lower end holds size positions to be processed with groove from corresponding greatly less than 1/2 plunger (6), recess width is held size greatly greater than plunger (6), and depth of groove is greater than lower contact (7) depth of groove.Body (2) inner chamber has step, ball seat (3) external surface also has step, body (2) is suitable with the large and small footpath of corresponding step of ball seat (3), and the baffle ring (4) that shear pin (5) will be sleeved on the ball seat (3) is fixed on ball seat (3) medium position, and just is stuck in the interior step place of body (2).
When Multilateral Wells, horizontal well, sidetrack horizontal well completion process, the utility model is connected on the completion tubular string, when needs are slipped out of the hand, pitching, ball seat is in ball seat (3), turn on pump is suppressed, and builds the pressure, and shear pin (5) is cut off, it is descending to promote ball seat (3), plunger (6) falls in the groove of ball seat (3) external surface, and plunger (6) breaks away from from lower contact (7) groove, realizes giving up safely.
Claims (1)
1, a kind of completion hydraulic releasing tool, form by top connection (1), body (2), ball seat (3), baffle ring (4), shear pin (5), plunger (6), lower contact (7), top connection (1) links to each other by screw thread with body (2), and ball seat (3) is positioned at body (2) inner chamber, it is characterized in that:
A) body (2) external surface be shaped as stairstepping, lower contact (7) is sleeved on body (2) lower end, body (2) lower end is evenly distributed with radial direction through hole, the corresponding radial direction through hole of lower contact (7) position is processed with groove; Plunger (6) is installed in the groove of the radial direction through hole of body (2) lower end and lower contact (7);
B) plunger (6) to be shaped as up-small and down-big ladder cylindrical, the size of plunger (6) upper end is equal to or slightly less than the through hole and lower contact (7) groove of body (2), ball seat (3) lower end is fixed on plunger (6) in the through hole of body (2), ball seat (3) lower end holds size positions to be processed with groove from corresponding greatly less than 1/2 plunger (6), recess width is held size greatly greater than plunger (6), and depth of groove is greater than lower contact (7) depth of groove;
C) body (2) inner chamber has step, ball seat (3) external surface also has step, body (2) is suitable with the large and small footpath of corresponding step of ball seat (3), and the baffle ring (4) that shear pin (5) will be sleeved on the ball seat (3) is fixed on ball seat (3) medium position, and just is stuck in the interior step place of body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201389055U CN201273150Y (en) | 2008-09-25 | 2008-09-25 | Hydraulic releasing tool for well completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201389055U CN201273150Y (en) | 2008-09-25 | 2008-09-25 | Hydraulic releasing tool for well completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273150Y true CN201273150Y (en) | 2009-07-15 |
Family
ID=40883498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201389055U Expired - Lifetime CN201273150Y (en) | 2008-09-25 | 2008-09-25 | Hydraulic releasing tool for well completion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201273150Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900390A (en) * | 2012-11-09 | 2013-01-30 | 中国石油集团川庆钻探工程有限公司 | Pressurized coring tool |
| CN102913163A (en) * | 2012-11-09 | 2013-02-06 | 四川川庆石油钻采科技有限公司 | Pressure bearing device suitable for pressurized coring tool |
| CN103306636A (en) * | 2012-03-15 | 2013-09-18 | 中国石油化工股份有限公司 | Well completion tube string and cementing method |
| CN105464601A (en) * | 2015-12-24 | 2016-04-06 | 中国石油天然气股份有限公司 | Multipurpose releasing tool capable of being used for continuous operation |
| CN109162651A (en) * | 2018-09-21 | 2019-01-08 | 中国石油集团渤海钻探工程有限公司 | A kind of hydraulic safety connector |
-
2008
- 2008-09-25 CN CNU2008201389055U patent/CN201273150Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306636A (en) * | 2012-03-15 | 2013-09-18 | 中国石油化工股份有限公司 | Well completion tube string and cementing method |
| CN103306636B (en) * | 2012-03-15 | 2015-12-09 | 中国石油化工股份有限公司 | A kind of completion tubular string and cemented method |
| CN102900390A (en) * | 2012-11-09 | 2013-01-30 | 中国石油集团川庆钻探工程有限公司 | Pressurized coring tool |
| CN102913163A (en) * | 2012-11-09 | 2013-02-06 | 四川川庆石油钻采科技有限公司 | Pressure bearing device suitable for pressurized coring tool |
| CN102900390B (en) * | 2012-11-09 | 2015-09-23 | 中国石油集团川庆钻探工程有限公司 | Pressurized coring tool |
| CN102913163B (en) * | 2012-11-09 | 2016-01-20 | 四川川庆石油钻采科技有限公司 | Be applicable to the pressure-bearing device of pressurized coring tool |
| CN105464601A (en) * | 2015-12-24 | 2016-04-06 | 中国石油天然气股份有限公司 | Multipurpose releasing tool capable of being used for continuous operation |
| CN109162651A (en) * | 2018-09-21 | 2019-01-08 | 中国石油集团渤海钻探工程有限公司 | A kind of hydraulic safety connector |
| CN109162651B (en) * | 2018-09-21 | 2020-06-05 | 中国石油集团渤海钻探工程有限公司 | Hydraulic safety joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090715 |