CN103670332B - Shaft isolation valve - Google Patents
Shaft isolation valve Download PDFInfo
- Publication number
- CN103670332B CN103670332B CN201310752726.6A CN201310752726A CN103670332B CN 103670332 B CN103670332 B CN 103670332B CN 201310752726 A CN201310752726 A CN 201310752726A CN 103670332 B CN103670332 B CN 103670332B
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- CN
- China
- Prior art keywords
- joint
- tube connector
- ball seat
- pod apertures
- diameter section
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- 238000002955 isolation Methods 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a kind of shaft isolation valve, comprise: the first joint, second joint, tube connector and ball seat, wherein tube connector has first end and the second end, the two ends of tube connector respectively with the first joint, second joint sealing connects, second end stretches in the second joint, annular space portion is formed between second end of tube connector and the second joint, tube connector offers the first radial pod apertures, first pod apertures is communicated with annular space portion, ball seat is located in tube connector, ball seat is connected with tube connector slidable sealing, the end part seal of the setting end of ball seat is connected with plug, ball seat has the second pod apertures, on the inwall of tube connector, circumference has the first draw-in groove, on the outer wall of ball seat, circumference has the second draw-in groove, first draw-in groove or the second draw-in groove are embedded with elastic opening snap ring, ball seat is fixed by shear pin and described tube connector, ball seat and tube connector are coordinated by large path and realize Stroke Control.Safety of the present invention is high.
Description
Technical field
The present invention relates to a kind of shaft isolation valve, belong to the downhole tool technical field of oil, Wellbore of Gas Wells operation.
Background technology
Pit shaft isolation tools is widely used in the construction operation such as oil well, gas well on oil field.The Main Function of pit shaft isolation tools: operating tool string and mineshaft annulus are completely cut off, after isolated, operating tool string could form enclosure space, and other rely on the instrument of hydraulic starting to work like this.At present, according to different construction demands, develop multiple pit shaft isolation tools, but after the input setting ball that the pit shaft isolation tools on market has, close circulation passage, pit shaft can only be flowed into by barrier tube inner fluid, can not in barrier tube outer fluid inflow pipe, the pit shaft that can not play real meaning completely cuts off; Some pit shaft isolation tools are present is honored as a queen and can completely cuts off tubing string and mineshaft annulus completely; but the pit shaft isolation tools finding on market at the scene in Construction practices often there will be ball seat in lower instrument process be ejected body, throw setting ball after cannot the phenomenon such as setting, setting rear seal failure, cause construction accident to cause economic loss serious.
In view of above-mentioned existing pit shaft isolation tools in use Problems existing and defect, the present inventor relies on working experience for many years and abundant professional knowledge actively in addition research and innovation, finally have developed a kind of shaft isolation valve, to solve prior art Problems existing and defect.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of shaft isolation valve, solving because the dirts such as sand grains cause ball seat stroke can not realize the problem completely cut off not, there is safe and reliable feature.
In order to solve the problems of the technologies described above, present invention employs following technical scheme:
Shaft isolation valve, comprise: the first joint, second joint, tube connector and ball seat, wherein tube connector has first end and the second end, described first end is connected with described first joint sealing, described second end is connected with described second joint sealing, described second end stretches in described second joint, described tube connector forms annular space portion between the end and described second joint of junction to the second end of itself and the second joint, described tube connector offers the first radial pod apertures, described first pod apertures is communicated with annular space portion, described ball seat is located in tube connector, described ball seat is connected with described tube connector slidable sealing, described ball seat is setting end near the first joint side, the other end is sealed end, the end part seal of described ball seat sealed end is connected with plug, described ball seat has the second pod apertures, on the inwall of described tube connector, circumference has the first draw-in groove, on the outer wall of described ball seat, circumference has the second draw-in groove, described first draw-in groove or the second draw-in groove are embedded with elastic opening snap ring, described ball seat is fixed by shear pin and described tube connector, described tube connector comprises different two sections of internal diameter, and first end side is the large diameter section that internal diameter is larger, and the second end side is the little internal diameter section that internal diameter is less, and large diameter Duan Yu little internal diameter section junction forms the first shoulder, described ball seat comprises different two sections of external diameter, wherein setting end side is the big outer diameter section that external diameter is larger, sealed end side is the small outer diameter section that external diameter is less, the second shoulder is formed between big outer diameter section and small outer diameter section, the external diameter of described big outer diameter section is greater than the internal diameter of little internal diameter section, described big outer diameter section and large diameter section are sealed and matched, and small outer diameter section and little internal diameter section are sealed and matched,
When ball seat and described tube connector are fixed by described shear pin, described second pod apertures is relative with described first pod apertures, conducting between described first joint and the second joint;
After the setting shear pin of pitching is cut off, described ball seat moves to the second joint direction, until the second draw-in groove is relative with described first draw-in groove, described elastic opening snap ring is stuck in the first draw-in groove and the second draw-in groove simultaneously, now, described second pod apertures and described first pod apertures stagger, isolated between described first joint and the second joint, described second shoulder and described first shoulder offset simultaneously, the stroke cut-off of described ball seat.
As preferably, described first inner nosepiece wall has positive stop lug boss, when ball seat and described tube connector are fixed by described shear pin, end and the positive stop lug boss of the setting end of described ball seat offset, and described positive stop lug boss restriction ball seat moves to the first joint direction.
As preferably, described first shoulder and described second shoulder are the inclined-plane cooperatively interacted.
As preferably, described tube connector is connected with described first joint and the second joint respectively by external screw thread, described first joint and the second joint are respectively by marking closely screw and tube connector is fixed, between described first joint and tube connector, and seal respectively by sealing ring between the second joint and tube connector.
As preferably, described first joint is female joint, and described second joint is male joint.
As preferably, described second pod apertures and described first pod apertures are four, and described second pod apertures is uniformly distributed in described ball seat circumference, and described first pod apertures is uniformly distributed in described tube connector circumference.
As preferably, sealed by O type circle between described ball seat and described tube connector.
Compared with prior art, beneficial effect of the present invention is:
The body of shaft isolation valve of the present invention adopts the first joint, tube connector and the second joint three stage structure, is convenient to manufacture, and is easy to assembling.The power that the setting of the first shoulder and the second shoulder avoids ball seat to apply all is born by elastic opening snap ring, improves the safety of integral device.And this kind of structure can avoid the foreign material such as sandstone to enter inner pelletizing seat stroke deficiency, elastic opening snap ring by ball seat and tube connector relative positioning, can not cannot realize the defect completely cut off.First shoulder and the second shoulder are the inclined-plane cooperatively interacted.Can contact area be increased, and the impact force of ball seat can be decomposed, avoid parts damages.
Accompanying drawing explanation
Fig. 1 is that the structure of an embodiment of shaft isolation valve of the present invention partly cuts open figure.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Fig. 1 is that the structure of an embodiment of shaft isolation valve of the present invention partly cuts open figure.As shown in Figure 1, shaft isolation valve, comprise: the first joint 1, second joint 7, tube connector 4 and ball seat 2, wherein tube connector 4 has first end and the second end, first end and first joint 1 of tube connector 4 are tightly connected, second end and second joint 7 of tube connector 4 are tightly connected, second end of tube connector 4 stretches in the second joint 7, tube connector 4 forms annular space portion 13 between the end and the second joint 7 of junction to the second end of itself and the second joint, tube connector 4 offers the first radial pod apertures 41, first pod apertures 41 is communicated with annular space portion 13, ball seat 2 is located in tube connector 4, ball seat 2 is connected with tube connector 4 slidable sealing, ball seat 2 is setting end near the first joint 1 side, the other end is sealed end, the end part seal of the sealed end of ball seat 2 is connected with plug 6, ball seat 2 has the second pod apertures 21, on the inwall of tube connector 4, circumference has the first draw-in groove 42, on the outer wall of ball seat 2, circumference has the second draw-in groove 22, first draw-in groove 42 or the second draw-in groove 22 are embedded with elastic opening snap ring 3, ball seat 2 is fixed by shear pin 5 and tube connector 4, tube connector 4 comprises different two sections of internal diameter, and first end side is the large diameter section that internal diameter is larger, and the second end side is the little internal diameter section that internal diameter is less, and large diameter Duan Yu little internal diameter section junction forms the first shoulder 43, ball seat 2 comprises different two sections of external diameter, wherein setting end side is the big outer diameter section that external diameter is larger, sealed end side is the small outer diameter section that external diameter is less, forms the second shoulder 23 between big outer diameter section and small outer diameter section, and the external diameter of big outer diameter section is greater than the internal diameter of little internal diameter section, big outer diameter section and large diameter section are sealed and matched, and small outer diameter section and little internal diameter section are sealed and matched,
When ball seat 2 is fixed with tube connector 4 by shear pin 5, the second pod apertures 21 is relative with the first pod apertures 41, conducting between the first joint 1 and the second joint 7;
After the setting shear pin 5 of pitching is cut off, ball seat 2 moves to the second joint 7 direction, until the second draw-in groove 22 is relative with the first draw-in groove 42, elastic opening snap ring 3 is stuck in the first draw-in groove 42 and the second draw-in groove 22 simultaneously, and now, the second pod apertures 21 and the first pod apertures 41 stagger, isolated between first joint 1 and the second joint 7, meanwhile, the second shoulder 23 and the first shoulder 43 offset, the stroke cut-off of ball seat 2.
The body of shaft isolation valve of the present invention adopts the first joint, tube connector and the second joint three stage structure, is convenient to manufacture, and is easy to assembling.The power that the setting of the first shoulder 43 and the second shoulder 23 avoids ball seat 2 to apply all is born by elastic opening snap ring 3, improves the safety of integral device.And this kind of structure can avoid the foreign material such as sandstone to enter inner pelletizing seat 2 stroke deficiency, elastic opening snap ring 3 by ball seat 2 and tube connector 4 relative positioning, can not cannot realize the defect completely cut off.First shoulder 43 and the second inclined-plane of shoulder 23 for cooperatively interacting.Can contact area be increased, and the impact force of ball seat 2 can be decomposed, avoid parts damages.
Preferred as above-described embodiment, first joint 1 inwall has positive stop lug boss 18, when ball seat 2 is fixed with tube connector 4 by shear pin 5, end and the positive stop lug boss 18 of the setting end of ball seat 2 offset, and positive stop lug boss 18 limits ball seat 2 and moves to the first joint 1 direction.First joint 1 is provided with positive stop lug boss, effectively can stop ball seat, to avoid entering under instrument in process because upthrust cuts off shear pin 5 and up body of going out compared with ambassador's ball seat, causes tool damage.
In an embodiment of the present invention, tube connector 4 is connected with the first joint 1 and the second joint 7 respectively by external screw thread, first joint 1 and the second joint 7 are fixed with tube connector 4 respectively by marking closely screw 10, between first joint 1 and tube connector 4, and seal respectively by sealing ring 8,11 between the second joint 7 and tube connector 4.
First joint 1 is female joint, for being connected with the tubing string of top; Second joint 7 is male joint, for being connected with the tubing string of below.
Second pod apertures 21 and the first pod apertures 41 are four, and the second pod apertures 21 is uniformly distributed in ball seat 2 circumference, and the first pod apertures 41 is uniformly distributed in tube connector 4 circumference.
Sealed by O type circle 9,12 between ball seat 2 and tube connector 4.In embodiment illustrated in fig. 1, on the outer wall of the big outer diameter section of ball seat 2, circumference has seal groove, is provided with O type circle 9 to realize the sealing between setting end and tube connector 4 in sealing groove.On the inwall of the little internal diameter section of tube connector 4, circumference has seal groove, is provided with O type circle 12 to realize the sealing between tube connector 4 and small outer diameter section in sealing groove.O type circle 12 realizes two resealings, and when elastic opening snap ring 3 is stuck in the first draw-in groove 42 and the second draw-in groove 22 simultaneously, the second pod apertures 21 is between two resealings.In the present embodiment, every resealing is realized by twice O type circle 12.In the present embodiment, elastic opening snap ring 3 is embedded in the second draw-in groove 22, is convenient to assembling, and effectively keeps the elasticity of elastic opening snap ring 3.
Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.
Claims (4)
1. shaft isolation valve, is characterized in that, comprising: the first joint, the second joint, tube connector and ball seat, and wherein said first joint is female joint, and described second joint is male joint, tube connector has first end and the second end, described first end is connected with described first joint sealing, described second end is connected with described second joint sealing, described second end stretches in described second joint, described tube connector forms annular space portion between the end and described second joint of junction to the second end of itself and the second joint, described tube connector offers the first radial pod apertures, described first pod apertures is communicated with annular space portion, described ball seat is located in tube connector, described ball seat is connected with described tube connector slidable sealing, sealed by O type circle between described ball seat and described tube connector, described ball seat is setting end near the first joint side, the other end is sealed end, the end part seal of the sealed end of described ball seat is connected with plug, described ball seat has the second pod apertures, on the inwall of described tube connector, circumference has the first draw-in groove, on the outer wall of described ball seat, circumference has the second draw-in groove, described first draw-in groove or the second draw-in groove are embedded with elastic opening snap ring, described ball seat is fixed by shear pin and described tube connector, described tube connector comprises different two sections of internal diameter, and first end side is the large diameter section that internal diameter is larger, and the second end side is the little internal diameter section that internal diameter is less, and large diameter Duan Yu little internal diameter section junction forms the first shoulder, described ball seat comprises different two sections of external diameter, wherein setting end side is the big outer diameter section that external diameter is larger, sealed end side is the small outer diameter section that external diameter is less, the second shoulder is formed between big outer diameter section and small outer diameter section, the external diameter of described big outer diameter section is greater than the internal diameter of little internal diameter section, described big outer diameter section and large diameter section are sealed and matched, and small outer diameter section and little internal diameter section are sealed and matched,
When ball seat and described tube connector are fixed by described shear pin, described second pod apertures is relative with described first pod apertures, conducting between described first joint and the second joint;
After the setting shear pin of pitching is cut off, described ball seat moves to the second joint direction, until the second draw-in groove is relative with described first draw-in groove, described elastic opening snap ring is stuck in the first draw-in groove and the second draw-in groove simultaneously, now, described second pod apertures and described first pod apertures stagger, isolated between described first joint and the second joint, described second shoulder and described first shoulder offset simultaneously, the stroke cut-off of described ball seat.
2. shaft isolation valve according to claim 1, is characterized in that, described first shoulder and described second shoulder are the inclined-plane cooperatively interacted.
3. shaft isolation valve according to claim 1, it is characterized in that, described tube connector is connected with described first joint and the second joint respectively by external screw thread, described first joint and the second joint are respectively by marking closely screw and tube connector is fixed, between described first joint and tube connector, and seal respectively by sealing ring between the second joint and tube connector.
4. shaft isolation valve according to claim 1, it is characterized in that, described second pod apertures and described first pod apertures are four, and described second pod apertures is uniformly distributed in described ball seat circumference, and described first pod apertures is uniformly distributed in described tube connector circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752726.6A CN103670332B (en) | 2013-12-31 | 2013-12-31 | Shaft isolation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310752726.6A CN103670332B (en) | 2013-12-31 | 2013-12-31 | Shaft isolation valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103670332A CN103670332A (en) | 2014-03-26 |
| CN103670332B true CN103670332B (en) | 2016-02-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310752726.6A Active CN103670332B (en) | 2013-12-31 | 2013-12-31 | Shaft isolation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670332B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982159B (en) * | 2014-06-04 | 2016-10-05 | 安东石油技术（集团）有限公司 | Can ball-throwing type reverse circulation valve |
| CN106522881B (en) * | 2016-12-07 | 2023-07-07 | 中国石油天然气集团有限公司 | Underground isolation valve |
| WO2021092119A1 (en) * | 2019-11-05 | 2021-05-14 | Halliburton Energy Services, Inc. | Ball seat release apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5484022A (en) * | 1991-08-08 | 1996-01-16 | Exploration & Production Services (North Sea) Ltd. | Tubing test valve |
| CN202882846U (en) * | 2012-10-12 | 2013-04-17 | 中国石油集团长城钻探工程有限公司 | Downhole isolating valve |
| CN202954786U (en) * | 2012-12-11 | 2013-05-29 | 中国石油化工股份有限公司 | Oil pipe isolation valve |
| CN103299028A (en) * | 2010-10-18 | 2013-09-11 | Ncs油田服务股份有限公司加拿大分公司 | Tools and methods for use in completion of a wellbore |
| CN203655234U (en) * | 2013-12-31 | 2014-06-18 | 安东石油技术（集团）有限公司 | Shaft isolating valve |
-
2013
- 2013-12-31 CN CN201310752726.6A patent/CN103670332B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5484022A (en) * | 1991-08-08 | 1996-01-16 | Exploration & Production Services (North Sea) Ltd. | Tubing test valve |
| CN103299028A (en) * | 2010-10-18 | 2013-09-11 | Ncs油田服务股份有限公司加拿大分公司 | Tools and methods for use in completion of a wellbore |
| CN202882846U (en) * | 2012-10-12 | 2013-04-17 | 中国石油集团长城钻探工程有限公司 | Downhole isolating valve |
| CN202954786U (en) * | 2012-12-11 | 2013-05-29 | 中国石油化工股份有限公司 | Oil pipe isolation valve |
| CN203655234U (en) * | 2013-12-31 | 2014-06-18 | 安东石油技术（集团）有限公司 | Shaft isolating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103670332A (en) | 2014-03-26 |
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Effective date of registration: 20181225 Address after: No. 309, Second Street, Middle and South China, West District, Tianjin Binhai Economic and Technological Development Zone, 300450 Patentee after: Tianjin An Dong petroleum machinery Manufacturing Co., Ltd Address before: 100102 No. 8 Pingcui West Road, Donghuqu, Chaoyang District, Beijing Patentee before: Anton Oilfield Services (Group) Ltd. |
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| TR01 | Transfer of patent right |