CN201031661Y - Hydraulic controlled under balance down-hole casing tube valve - Google Patents
Hydraulic controlled under balance down-hole casing tube valve Download PDFInfo
- Publication number
- CN201031661Y CN201031661Y CNU2007201392424U CN200720139242U CN201031661Y CN 201031661 Y CN201031661 Y CN 201031661Y CN U2007201392424 U CNU2007201392424 U CN U2007201392424U CN 200720139242 U CN200720139242 U CN 200720139242U CN 201031661 Y CN201031661 Y CN 201031661Y
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- CN
- China
- Prior art keywords
- urceolus
- lock sleeve
- lower contact
- boss
- valve assembly
- 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
The utility model relates to a tool for underbalanced well drilling and well completion operation namely an underbalanced downhole casing shut-off valve controlled by hydraulic. The device consists of an upper joint (1), an upper outer cylinder (2), an inner cylinder (3), a lower outer cylinder (4), a tube valve assembly (5), a lower joint (6), a shear pin (7) and a lock sleeve (8). The lock sleeve (8) is installed in the intracavity of the lower joint (6). The inner surface of the lower joint (6) is processed to be stepped and the lower end face of the lock sleeve (8) is located at the step surface of the inner face of the lower joint (6). The tube valve assembly (5) is located in the ring space formed by the lower outer cylinder (4) and the inner cylinder (3). A hydraullic cavity is formed by the three parts of a boss with a seal ring provided in the intracavity of the upper outer cylinder (2), a boss with a seal ring provided at the outer surface of the inner cylinder (3) and the upper end face of the upper joint (1). Moreover, a hydraulic control system is communicated with the upward hole of an axis which is on the top of the upper outer cylinder (2) via a control pipeline. The utility model can implement underbalanced condition in the well drilling and well completion operation process.
Description
Technical field
The utility model relates to a kind of instrument that is used for the under balance pressure drilling completion practice, belongs to the down-hole shut-in well instrument class of under balance pressure drilling and completion.
Background technology
Underbalance downhole casing valve can be opened the complete packing of the upper and lower fluid of pit shaft in a certain position of protective casing, can guarantee under under-balanced state, to make a trip and be lowered to completion tubular column, realize that drilling well makes a trip and is lowered to the under-balanced state of completion tubular column operation process, can effectively reduce the infringement that common under balance pressure drilling makes a trip and adopt the weighted mud kill-job that reservoir is caused for the balance bottom pressure when being lowered to the completion tubular column operation.The underbalance downhole casing valve of hydraulic control can't the smooth opening down hole sleeve valve when in a single day the hydraulic control pipeline breaks down hyoplastron.
Summary of the invention
For addressing the above problem, the purpose of this utility model is to provide a kind of underbalance downhole casing valve of hydraulic control, this instrument by ground hydraulic control can a certain position of protective casing with pit shaft on, the complete packing of following fluid is opened, can guarantee under under-balanced state, to make a trip and be lowered to completion tubular column, realize that drilling well makes a trip and is lowered to the under-balanced state of completion tubular column operation process, can effectively reduce the infringement that common under balance pressure drilling makes a trip and adopt the weighted mud kill-job that reservoir is caused for the balance bottom pressure when being lowered to the completion tubular column operation, and can when can't opening underbalance downhole casing valve, ground hydraulic control underbalance downhole casing valve be opened and permanent locking by being lowered to kit.
The technical solution adopted in the utility model is mainly by top connection 1, last urceolus 2, inner core 3, following urceolus 4, pipe valve assembly 5, lower contact 6, shear pin 7, lock sleeve 8 is formed, top connection 1 and last urceolus 2, last urceolus 2 reaches down with following urceolus 4, and urceolus 4 is connected by screw thread or other modes with lower contact 6, lock sleeve 8 is contained in the inner chamber of lower contact 6, the inner surface place of lock sleeve 8 upper end external surfaces and lower contact 6 is processed with pawl, lower contact 6 also is connected by shear pin 7 with lock sleeve 8, lower contact 6 inner surfaces are processed as staged, the lower surface of lock sleeve 8 is positioned the step surface of lower contact 6 inner surfaces, and the external diameter of lock sleeve 8 is slightly less than the internal diameter of pipe valve assembly 5.In urceolus 4 and the inner core 3 formed annular spaces, pipe valve assembly 5 was sleeved on the external surface of inner core 2 and is positioned down the step surface of urceolus 4 inner surfaces under pipe valve assembly 5 was in.Inner chamber at last urceolus 2 is processed with a boss that sealing ring is housed, external surface at inner core 3 also is processed with a boss that sealing ring is housed, boss and top connection 1 upper surface that the external surface that the boss of sealing ring and inner core 3 is housed at the inner chamber of last urceolus 2 is equipped with sealing ring form 2 hydraulic cavities, and last urceolus 2 upper ends axially on processing porose, hydraulic control system links to each other with the hole by the control pipeline, and the hole communicates with 2 hydraulic cavities respectively.
When casing valve is a closed condition, casing valve is opened, only must in a looped pipeline, suppress, pressure enters hydraulic cavities promotion inner core 3 and moves downward through the hole of last urceolus 2, and the hyoplastron that promotes on the pipe valve assembly 5 is opened.Casing valve is closed, so only must suppress in another root looped pipeline, pressure enters hydraulic cavities promotion inner core 3 and moves upward through the hole of last urceolus 2, and the hyoplastron on the pipe valve assembly 5 is closed under the effect of auxilliary spring.When casing valve is closed condition, when ground hydraulic control can't be opened underbalance downhole casing valve, underbalance downhole casing valve is opened and permanent locking by being lowered to kit.
Description of drawings
Fig. 1 the utility model tool construction schematic diagram.
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
Underbalance downhole casing valve as described in Figure 1 is by top connection 1, last urceolus 2, inner core 3, following urceolus 4, pipe valve assembly 5, lower contact 6, shear pin 7, lock sleeve 8 is formed, it is characterized in that: top connection 1 and last urceolus 2, last urceolus 2 reaches down with following urceolus 4, and urceolus 4 is connected by screw thread or other modes with lower contact 6, lock sleeve 8 is contained in the inner chamber of lower contact 6, the inner surface place of lock sleeve 8 upper end external surfaces and lower contact 6 is processed with pawl, lower contact 6 also is connected by shear pin 7 with lock sleeve 8, lower contact 6 inner surfaces are processed as staged, the lower surface of lock sleeve 8 is positioned the step surface of lower contact 6 inner surfaces, and the external diameter of lock sleeve 8 is slightly less than the internal diameter of pipe valve assembly 5.In urceolus 4 and the inner core 3 formed annular spaces, pipe valve assembly 5 was sleeved on the external surface of inner core 2 and is positioned down the step surface of urceolus 4 inner surfaces under pipe valve assembly 5 was in.Inner chamber at last urceolus 2 is processed with a boss that sealing ring is housed, external surface at inner core 3 also is processed with a boss that sealing ring is housed, boss and top connection 1 upper surface that the external surface that the boss of sealing ring and inner core 3 is housed at the inner chamber of last urceolus 2 is equipped with sealing ring form 2 hydraulic cavities, and last urceolus 2 upper ends axially on processing porose, hydraulic control system links to each other with the hole by the control pipeline, and the hole communicates with 2 hydraulic cavities respectively.
When being lowered to protective casing, on protective casing, insert casing valve in advance, be connected to two looped pipelines at the annular space of casing valve and upper level sleeve pipe.When casing valve is a closed condition, casing valve is opened, by suppressing in a looped pipeline, pressure enters hydraulic cavities promotion inner core 3 and moves downward through the hole of last urceolus 2, and the hyoplastron that promotes on the pipe valve assembly 5 is opened.Casing valve is closed, so only must suppress in another root looped pipeline, pressure enters hydraulic cavities promotion inner core 3 and moves upward through the hole of last urceolus 2, and the hyoplastron on the pipe valve assembly 5 is closed under the effect of auxilliary spring.When casing valve is closed condition, when ground hydraulic control can't be opened underbalance downhole casing valve, by force the hyoplastron of down hole sleeve valve is opened by being lowered to kit, kit is to lock sleeve 8 inner surfaces, turn on pump is suppressed, the kit anchor fluke stretches out the inner chamber of support at down hole sleeve valve locking cover 8, on carry kit, it is up that this tool belt 8 one in locking cover, cuts off shear pin 7, locking cover 8 enters the inner chamber of pipe valve assembly 5, because the inner surface place of lock sleeve 8 upper end external surfaces and lower contact 6 is processed with pawl, lock sleeve 8 can only be up, can not be descending, therefore, locking cover 8 is an open mode with the underbalance downhole casing valve permanent locking.
Claims (3)
1. the underbalance downhole casing valve of a hydraulic control is characterized in that: mainly be made up of top connection (1), last urceolus (2), inner core (3), following urceolus (4), pipe valve assembly (5), lower contact (6), shear pin (7), lock sleeve (8); Lock sleeve (8) is contained in the inner chamber of lower contact (6), and the inner surface place of lock sleeve (8) upper end external surface and lower contact (6) is processed with pawl; Lower contact (6) inner surface is processed as staged, and the lower surface of lock sleeve (8) is positioned the step surface of lower contact (6) inner surface, and the external diameter of lock sleeve (8) is slightly less than the internal diameter of pipe valve assembly (5); In urceolus (4) and the formed annular space of inner core (3), pipe valve assembly (5) was sleeved on the external surface of inner core (2) and is positioned down the step surface of urceolus (4) inner surface under pipe valve assembly (5) was in; Inner chamber at last urceolus (2) is processed with a boss that sealing ring is housed, external surface at inner core (3) also is processed with a boss that sealing ring is housed, boss and top connection (1) upper surface that the external surface that the boss of sealing ring and inner core (3) is housed at the inner chamber of last urceolus (2) is equipped with sealing ring form hydraulic cavities, and process porose axially going up of last urceolus (2) upper end, hydraulic control system links to each other with the hole by the control pipeline, and the hole communicates with hydraulic cavities respectively.
2. the underbalance downhole casing valve of a kind of hydraulic control as claimed in claim 1 is characterized in that: top connection (1) and last urceolus (2), go up urceolus (2) and play urceolus (4) and down urceolus (4) and lower contact (6) by screwed connection.
3. the underbalance downhole casing valve of a kind of hydraulic control as claimed in claim 1, it is characterized in that: lower contact (6) is connected by shear pin (7) with lock sleeve (8).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201392424U CN201031661Y (en) | 2007-02-06 | 2007-02-06 | Hydraulic controlled under balance down-hole casing tube valve |
| CA2596383A CA2596383C (en) | 2006-08-07 | 2007-08-07 | Underbalanced downhole casing valve and force open tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201392424U CN201031661Y (en) | 2007-02-06 | 2007-02-06 | Hydraulic controlled under balance down-hole casing tube valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201031661Y true CN201031661Y (en) | 2008-03-05 |
Family
ID=39163553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201392424U Expired - Lifetime CN201031661Y (en) | 2006-08-07 | 2007-02-06 | Hydraulic controlled under balance down-hole casing tube valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201031661Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103299027A (en) * | 2011-01-14 | 2013-09-11 | 哈利伯顿能源服务公司 | Rotational test valve with tension reset |
| CN103334715A (en) * | 2013-06-17 | 2013-10-02 | 中国石油集团长城钻探工程有限公司 | Casing valve for use in unbalanced drilling |
| CN111706295A (en) * | 2020-07-14 | 2020-09-25 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
-
2007
- 2007-02-06 CN CNU2007201392424U patent/CN201031661Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103299027A (en) * | 2011-01-14 | 2013-09-11 | 哈利伯顿能源服务公司 | Rotational test valve with tension reset |
| CN103299027B (en) * | 2011-01-14 | 2016-03-16 | 哈利伯顿能源服务公司 | There is the rotational test valve of tension reset |
| CN103334715A (en) * | 2013-06-17 | 2013-10-02 | 中国石油集团长城钻探工程有限公司 | Casing valve for use in unbalanced drilling |
| CN103334715B (en) * | 2013-06-17 | 2015-11-18 | 中国石油集团长城钻探工程有限公司 | Under balance pressure drilling casing valve |
| CN111706295A (en) * | 2020-07-14 | 2020-09-25 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
| CN111706295B (en) * | 2020-07-14 | 2021-03-23 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
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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: 20081219 Address after: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee after: Western Drilling Kelamayi Drilling Technology Institute Address before: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee before: Research Inst of Drilling Technology, Xinjiang Petroleum Administration |
|
| ASS | Succession or assignment of patent right |
Owner name: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INST Free format text: FORMER OWNER: DRILLING WELL TECHNOLOGY INSTITUTE, PETROLEUM ADMINISTRATION BUREAU, XINJIANG Effective date: 20081219 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080305 |