CN2697310Y - Under-balance downhole casing-valve - Google Patents
Under-balance downhole casing-valve Download PDFInfo
- Publication number
- CN2697310Y CN2697310Y CN 200420050161 CN200420050161U CN2697310Y CN 2697310 Y CN2697310 Y CN 2697310Y CN 200420050161 CN200420050161 CN 200420050161 CN 200420050161 U CN200420050161 U CN 200420050161U CN 2697310 Y CN2697310 Y CN 2697310Y
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- CN
- China
- Prior art keywords
- expanding sleeve
- urceolus
- hyoplastron
- inner core
- sleeve
- 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 an under-balance downhole casing-valve, mainly comprising a sleeve short joint(1), a linkwork assembly, a pipe valve assembly(8)and a downward outboard barrel(9), and the utility model is characterized in that the pipe valve assembly uses a fitting structure of a spring and a hinge to realize the closure and open of a tongue plate. The utility model uses the sleeve annular volume in a special position of the technical sleeve to be pressurized or depressurized to realize the open and closure of the tongue plate to communicate or contain the well bore. The utility model can assure tripping and loading completing well pipe strings in the under-balance state to realize the whole well drilling process in the under-balance state, effectively weaken the damage to reservoirs and simplify the task program.
Description
Technical field
The utility model is used for the under balance pressure drilling completion practice, belongs to the down-hole shut-in well instrument of under balance pressure drilling and completion.
Background technology
Under-balanced drilling technology had had rapidly development in recent years, but with regard to present under balance pressure drilling technology, to the protection of oil-gas Layer imperfection still, as: carry when boring at the drilling well tubing string and will inject weighted mud on payzone top earlier with the balance wellbore pressure.Because the injection of weighted mud although whole payzone section is injected with non-infringement fluid, still can produce infringement to payzone.Underbalance downhole hole-closure device research at home at present is at the early-stage, and its product still belongs to blank, and is external, though this series products is developed, still is in the development experiments stage, do not have large-area input to apply.
Summary of the invention
The purpose of this utility model is to provide a kind of underbalance downhole casing valve.
The utility model mainly partly is made up of casing nipple 1, interlock assembly, pipe valve assembly 8, following urceolus 9 etc., it is characterized in that: pipe valve assembly 8 is made up of parts such as body 10, hinge 11, bearing pin 12, auxilliary spring 13, auxilliary spring positioning sleeve 14, hyoplastron 15, spring holders 16; Body 10 all is processed with groove with hyoplastron 15 1 ends, and hinge 11 is fixed in the groove of body 10 and hyoplastron 15 by welding and other mode; Hyoplastron 15 links to each other with body 10 by bearing pin 12 and hinge 11; The groove both sides of Fixed hinge 11 are processed with symmetrical aperture respectively on hyoplastron 15, the external surface relevant position of body 10 is processed with two symmetrical grooves, the end that the two pairs of auxilliary springs are 13 groups is separately fixed on the aperture of hyoplastron 15 both sides, the other end is separately fixed on the auxilliary spring positioning sleeve 14, and auxilliary spring positioning sleeve 14 is separately fixed in the symmetrical grooves of body 10 by welding or other modes; Hyoplastron 15 is cylindrical, and its axial gap end surfaces and body 10 lower end surface are suitable.
Major advantage of the present utility model is: the pipe valve assembly adopts hinge to cooperate the open and close that realize hyoplastron with auxilliary spring, have simple in structure, reliable in action, characteristics such as easy to operate.This instrument can be opened the complete packing of the upper and lower fluid of pit shaft in a certain position of protective casing, can guarantee to make a trip, be lowered under under-balanced state completion tubular column.
Description of drawings
Fig. 1 the utility model structural representation
Fig. 2 pipe valve assembly structure schematic diagram
The A-A sectional view of Fig. 3 Fig. 2
The B-B revolved sectional view of Fig. 4 Fig. 3
The C-C sectional view of Fig. 5 Fig. 2
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, mainly partly be made up of casing nipple 1, interlock assembly, pipe valve assembly 8, following urceolus 9 etc., it is characterized in that: pipe valve assembly 8 is made up of parts such as body 10, hinge 11, bearing pin 12, auxilliary spring 13, auxilliary spring positioning sleeve 14, hyoplastron 15, spring holders 16; Body 10 all is processed with groove with hyoplastron 15 1 ends, and hinge 11 is fixed in the groove of body 10 and hyoplastron 15 by welding and other mode; Hyoplastron 15 links to each other with body 10 by bearing pin 12 and hinge 11; The groove both sides of Fixed hinge 11 are processed with symmetrical aperture respectively on hyoplastron 15, the external surface relevant position of body 10 is processed with two symmetrical grooves, the end that the two pairs of auxilliary springs are 13 groups is separately fixed on the aperture of hyoplastron 15 both sides, the other end is separately fixed on the auxilliary spring positioning sleeve 14, and auxilliary spring positioning sleeve 14 is separately fixed in the symmetrical grooves of body 10 by welding or other modes; Hyoplastron 15 is cylindrical, and its axial gap end surfaces and body 10 lower end surface are suitable.
As optimal way of the present utility model, the interlock assembly can be taked the structure of surging: mainly be made up of last urceolus 2, inner core 3, last expanding sleeve 4,5 times expanding sleeves 6 of main spring, injection hole joint 7; Main spring 5 is made up of tens extension springs, and the one end is fixed on the expanding sleeve 4, on the fixing expanding sleeve 6 down of the other end; All in the annular space between last urceolus 2 and inner core 3, last expanding sleeve 4 is positioned on the inner core 3 for last expanding sleeve 4 and following expanding sleeve 6, and following expanding sleeve 6 is positioned on the urceolus 2; Injection hole joint 7 is connected between urceolus 2 and the following urceolus 9, and the hydraulic cavities that forms between the through hole that directly makes progress of injection hole joint and injection hole joint 7 and the inner core 3 is connected; Be matched in clearance between inner core 3 and following expanding sleeve 6, injection hole joint 7, pipe valve assembly 8, the last urceolus 2, inner core 3 can reciprocatingly slide vertically; The internal diameter of the joint that is connected with following urceolus (9) is less than inner core 3 external diameters.
Last expanding sleeve 4 can adopt the step mode to locate with inner core 3, following expanding sleeve 6 with last urceolus 2.
As further improvement of the utility model, last expanding sleeve 4 has a plurality of axial notches with following expanding sleeve 6 inner surfaces, match with a plurality of corresponding axial boss of inner core 3 external surfaces, this structure can prevent to produce relative rotation between expanding sleeve 4 and the following expanding sleeve 6, influences the operate as normal of main spring.
Operating principle of the present utility model: when being lowered to protective casing, on protective casing, insert casing valve in advance, carry out skill cover well cementation after, install and connect under balance pressure drilling wellhead assembly and ground installation.When needs are closed pit shaft, build the pressure at the well head casing annulus, inner core 3 drives goes up upwards slip of expanding sleeve 4, main spring 5 simultaneously stretches, last urceolus 2 inner chambers are processed with the limited step of inner core 3, and after inner core 3 walked to certain position, hyoplastron 15 produced under the effect of auxilliary spring and rotates to fastening position.When needing to be communicated with pit shaft, only need to discharge annular pressure, at this moment, last expanding sleeve 4 drives inner core 3 to lower slider under the effect of main spring 5 reset forces, and inner core 3 promotes hyoplastron 15 rotations, opens hyoplastron.
Claims (4)
1, a kind of underbalance downhole casing valve, mainly be made up of casing nipple (1), interlock assembly, pipe valve assembly (8), following urceolus parts such as (9), it is characterized in that: pipe valve assembly (8) is made up of body (10), hinge (11), bearing pin (12), auxilliary spring (13), auxilliary spring positioning sleeve (14), hyoplastron (15), spring holder parts such as (16); Body (10) all is processed with groove with hyoplastron (15) one ends, and hinge (11) is fixed in the groove of body (10) and hyoplastron (15) by welding and other mode; Hyoplastron (15) links to each other with body (10) by bearing pin (12) and hinge (11); The groove both sides of going up Fixed hinge (11) at hyoplastron (15) are processed with symmetrical aperture respectively, the external surface relevant position of body (10) is processed with two symmetrical grooves, one end of two pairs of auxilliary springs (13) group is separately fixed on the aperture of hyoplastron (15) both sides, the other end is separately fixed on the auxilliary spring positioning sleeve (14), and auxilliary spring positioning sleeve (14) is separately fixed in the symmetrical grooves of body (10) by welding or other modes; Hyoplastron (15) is cylindrical, and its axial gap end surfaces and body (10) lower end surface are suitable.
2, underbalance downhole casing valve according to claim 1 is characterized in that: the interlock assembly is taked the structure of surging, and mainly expanding sleeve (6), injection hole joint (7) are formed down by last urceolus (2), inner core (3), last expanding sleeve (4), main spring (5); Main spring (5) is made up of tens extension springs, and the one end is fixed on the expanding sleeve (4), on the fixing expanding sleeve (6) down of the other end; Last expanding sleeve (4) and following expanding sleeve (6) all are positioned at the annular space between urceolus (2) and the inner core (3), and last expanding sleeve (4) is positioned on the inner core (3), and following expanding sleeve (6) is positioned on the urceolus (2); Injection hole joint (7) is connected between urceolus (2) and the following urceolus (9), and the hydraulic cavities that forms between the through hole that directly makes progress of injection hole joint and injection hole joint (7) and the inner core (3) is connected; Be matched in clearance between inner core (3) and following expanding sleeve (6), injection hole joint (7), pipe valve assembly (8), the last urceolus (2); The internal diameter of the joint that is connected with following urceolus (9) is less than inner core (3) external diameter.
3, underbalance downhole casing valve according to claim 2 is characterized in that: go up expanding sleeve (4) and adopt the step mode to locate with inner core (3), following expanding sleeve (6) with last urceolus (2).
4, according to claim 2 or 3 described underbalance downhole casing valves, it is characterized in that: going up expanding sleeve (4) has a plurality of axial notches with following expanding sleeve (6) inner surface, matches with a plurality of corresponding axial boss of inner core (3) external surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420050161 CN2697310Y (en) | 2004-04-22 | 2004-04-22 | Under-balance downhole casing-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420050161 CN2697310Y (en) | 2004-04-22 | 2004-04-22 | Under-balance downhole casing-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2697310Y true CN2697310Y (en) | 2005-05-04 |
Family
ID=34776818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420050161 Expired - Lifetime CN2697310Y (en) | 2004-04-22 | 2004-04-22 | Under-balance downhole casing-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2697310Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100545413C (en) * | 2004-08-16 | 2009-09-30 | 长庆石油勘探局工程技术研究院 | The sleeve valve of blowout takes place when preventing to pull out of hole |
| CN102102500A (en) * | 2010-12-17 | 2011-06-22 | 中国石油集团长城钻探工程有限公司 | Motor-driven worm gear transmission underground sleeve valve |
| CN101338657B (en) * | 2007-07-06 | 2012-07-11 | 西部钻探克拉玛依钻井工艺研究院 | Hydraulically controlled underbalance downhole casing valve |
| CN104455693A (en) * | 2014-11-12 | 2015-03-25 | 中国石油集团长城钻探工程有限公司 | Valve plate opening and closing position measuring device |
-
2004
- 2004-04-22 CN CN 200420050161 patent/CN2697310Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100545413C (en) * | 2004-08-16 | 2009-09-30 | 长庆石油勘探局工程技术研究院 | The sleeve valve of blowout takes place when preventing to pull out of hole |
| CN101338657B (en) * | 2007-07-06 | 2012-07-11 | 西部钻探克拉玛依钻井工艺研究院 | Hydraulically controlled underbalance downhole casing valve |
| CN102102500A (en) * | 2010-12-17 | 2011-06-22 | 中国石油集团长城钻探工程有限公司 | Motor-driven worm gear transmission underground sleeve valve |
| CN102102500B (en) * | 2010-12-17 | 2013-11-06 | 中国石油集团长城钻探工程有限公司 | Motor-driven worm gear transmission underground sleeve valve |
| CN104455693A (en) * | 2014-11-12 | 2015-03-25 | 中国石油集团长城钻探工程有限公司 | Valve plate opening and closing position measuring device |
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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: 20081212 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: 20081212 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140422 Granted publication date: 20050504 |