CN105822242B - The stable casing pressure faner apparatus of leakproofness - Google Patents
The stable casing pressure faner apparatus of leakproofness Download PDFInfo
- Publication number
- CN105822242B CN105822242B CN201610196684.6A CN201610196684A CN105822242B CN 105822242 B CN105822242 B CN 105822242B CN 201610196684 A CN201610196684 A CN 201610196684A CN 105822242 B CN105822242 B CN 105822242B
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- China
- Prior art keywords
- central tube
- valve seat
- spring
- piston
- ring
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- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 7
- 230000004323 axial length Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
Abstract
The stable casing pressure faner apparatus of leakproofness, including central tube, spring is cased with outside central tube, central tube is bolted with top connection outside one end, adjusting ring is bolted on the outside of top connection, piston is bolted with outside central tube, piston jacket has valve seat, it is staged cavity inside valve seat, staged cavity at ladder as boundary side with piston slidingly and sealingly to connect, the other side is slidably connected with central tube, space with piston sliding in staged cavity, valve seat is far from being cased with sheath outside one end of piston, sheath is fixedly connected with valve seat, central tube is cased with lower contact at sheath, lower contact is threadedly coupled with central tube, it is sealed before valve seat and lower contact by gasket, central tube is radially provided with the second liquid pass hole at lower contact, valve seat covers the second liquid pass hole, spring, which is located at, to be adjusted between ring and valve seat.It adjusts ring and is adjustable cracking pressure, leakproofness can be improved to the pretightning force of valve seat by adjusting ring adjustment spring, and then solve the problems, such as backwash valve leakproofness by impurity effect.
Description
Technical field
The invention belongs to oil field well technical field of tools, are related to a kind of casing pressure faner apparatus.
Background technique
Currently, being frequently necessary to some process pipe strings of tripping in during underground work, and required in operation process with technique
Backwash cycles channel is established at any time, and establishing the tool that backwash cycles channel is commonly used is backwash cycles valve or referred to as casing pressure
Valve.The currently used backwash valve being made of valve ball valve seat is (such as：202900106 U of CN) it has the following problems：1. just suppressing
In the process, the leakproofness of valve ball valve seat is easy to be influenced by medium impurity；2. the cracking pressure value of backwash is not adjustable；3 is anti-
It is smaller to wash liquid channel.Therefore scene needs a kind of sealing stable and the adjustable casing pressure valve of backwash pressure value.
Summary of the invention
In view of this, the present invention is directed to propose a kind of casing pressure valve, solves backwash valve sealing existing in the prior art
The problem of property is vulnerable to impurity effect.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of casing pressure faner apparatus that leakproofness is stable, including central tube, the central tube are arranged with spring, the bullet outside
Top connection is bolted with outside the central tube of spring one end, the top connection is bolted with adjusting on the outside of one end of the spring
Ring, the central tube of the spring other end are bolted with piston outside, and the piston jacket is equipped with valve seat, is inside the valve seat
Staged cavity, the staged cavity at ladder as boundary side with the piston slidingly and sealingly to connect, the other side and institute
It states central tube to be slidably connected, the space with piston sliding in the staged cavity, the valve seat is far from the piston
One end outer cover be equipped with sheath, the sheath is fixedly connected with the valve seat, and the central tube is arranged at the sheath
There is lower contact, the lower contact is threadedly coupled with the central tube, and resigning ring is equipped between the sheath and the valve seat, described
Gasket is equipped in resigning ring, the lower contact is equipped with bulge loop close to described sheath one end, and the bulge loop is matched with the gasket
Conjunction is sealed the valve seat and the lower contact junction, and the central tube is radially provided with second at the lower contact
Liquid pass hole, the part that the staged cavity is contacted with the central tube can at least cover second mistake along axial length
Fluid apertures adjusts the spring to the pretightning force of the valve seat by tuning the adjusting ring.
The central tube is radially equipped with the first liquid pass hole, and first liquid pass hole is set to the activity space of the piston
It is interior, and the distance of first liquid pass hole to second liquid pass hole is greater than what the staged cavity was contacted with the central tube
Part is along axial length.
It is equipped with the first spring shim between the spring and the adjusting ring, the is equipped between the spring and the valve seat
Two spring shims.
The resigning ring is L-type, and the section of the gasket is L-type compatible with the resigning ring, the initial line of the L
In parallel with the axis of the central tube, the radial direction of the end edge of the L along the central tube.
The sheath is threadably secured with the valve seat and connect.
The piston is connect by the O-shaped ring that outer wall is equipped with the valve base sealing.
The O-shaped ring is two disposed in parallel, and spaced apart between two O-shaped rings.
Compared with the existing technology, the stable casing pressure faner apparatus of leakproofness of the present invention has the advantage that：
1. the present invention can adjust cracking pressure by adjusting ring, and adjust spring to the pretightning force of valve seat by adjusting ring
The leakproofness of gasket and lower contact can be improved, and then solve the problems, such as backwash valve leakproofness by impurity effect；
2. the setting of two liquid pass holes can realize the automatic open close of liquid pass hole, Jin Ershi by the adjusting to cracking pressure
The foundation at any time of existing backwash cycles.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is：The structure chart of casing pressure valve closed state of the present invention；
Fig. 2 is：The structure chart of casing pressure valve open state of the present invention.
In figure：1. top connection, 2. central tubes, 3. adjusting rings, 4. first spring shims, 5. springs, 6. second spring gaskets,
7. piston, 8.O type cushion rubber, 9. first liquid pass holes, 10. valve seats, 11. second liquid pass holes, 12. sheaths, 13. gaskets are connect under 14.
Head.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of casing pressure faner apparatus that leakproofness is stable, including central tube 2, the central tube 2 are arranged with spring 5, institute outside
It states and is bolted with top connection 1, the top connection 1 spiral shell on the outside of one end of the spring 5 outside the central tube 2 of 5 one end of spring
It is connected to and adjusts ring 3, piston 7 is bolted with outside the central tube 2 of 5 other end of spring, is arranged with valve seat outside the piston 7
10, be staged cavity inside the valve seat 10, the staged cavity using be at ladder boundary side and the piston 7 sliding and
It being tightly connected, the other side is slidably connected with the central tube 2, the space with the piston 7 sliding in the staged cavity,
The valve seat 10 is equipped with sheath 12 far from one end outer cover of the piston 7, and the sheath 12 is fixedly connected with the valve seat 10,
The central tube 2 is arranged with lower contact 14 at the sheath 12, and the lower contact 14 is threadedly coupled with the central tube 2,
It is equipped with resigning ring between the sheath 12 and the valve seat 10, is equipped with gasket 13 in the resigning ring, the lower contact 14 is leaned on
Nearly described 12 one end of sheath is equipped with bulge loop, and the bulge loop and the gasket 13 cooperate to the valve seat 10 and the lower contact 14
Junction is sealed, and the central tube 2 is radially provided with the second liquid pass hole 11 at the lower contact 14, and the staged is empty
The part that chamber is contacted with the central tube 2 can at least cover second liquid pass hole 11 along axial length, by tuning
It states and adjusts ring 3 to adjust the spring 5 to the pretightning force of the valve seat 10.
The central tube 2 is radially equipped with the first liquid pass hole 9, and the activity that first liquid pass hole 9 is set to the piston 7 is empty
In, and the distance of first liquid pass hole 9 to second liquid pass hole 11 is greater than the staged cavity and the central tube 2
The part of contact is along axial length.
Be equipped with 5 gasket 4 of the first spring between the spring 5 and the adjusting ring 3, the spring 5 and the valve seat 10 it
Between be equipped with second spring gasket 6.The setting of gasket can prolong the service life to avoid the abrasion of spring and adjusting ring and valve seat.
The resigning ring is L-type, and the section of the gasket 13 is L-type compatible with the resigning ring, the beginning of the L
The side axis with the central tube 2 in parallel, the radial direction of the end edge of the L along the central tube 2.L-type resigning ring and gasket into
One step improves leakproofness.
The sheath 12 is threadably secured with the valve seat 10 and connect.Facilitate installing and dismounting.
The O-shaped ring 8 and the valve seat 10 that the piston 7 is equipped with by outer wall are tightly connected.Facilitate processing and assembling
And good airproof performance.
The O-shaped ring 8 is two disposed in parallel, and spaced apart between two O-shaped rings 8.Further mention
High leakproofness.
Working principle：Valve seat 10 of the invention is resetted by compressed spring 5, is applied in advance to valve seat 10 using compressed spring 5
Add certain pretightning force, as long as pressure difference reaches certain value between casing and oil pipe (central tube 2), casing pressure faner apparatus is by outer
The effect compressed spring 5 of hydraulic coupling, gasket 13 no longer contact sealing with the port of lower contact 14 in parts casing pipe, and at this moment casing pressure is all
Your device is (the second liquid pass hole 11 is in the open state, state shown in Fig. 2) in the open state, and liquid can pass through outer sleeve
In into oil pipe (central tube 2), recycled, when the pressure in casing is equal to or less than oil pipe (central tube 2) pressure, set
Pressure faner apparatus comes back to origin-location (state shown in Fig. 1), forms sealing, prevents oil pipe liquid sleeve pipe.
Construction method：
1) tripping in：It connects by tubular column structure, goes into the well by underground work operating instruction requirement sequence.
2) it just suppresses：When casing pressure faner apparatus internal pressure is greater than the annular pressure between casing pressure faner apparatus and casing,
Casing pressure faner apparatus is in close state (such as Fig. 1).
3) anti-flushing well：When casing pressure faner apparatus internal pressure is less than annular pressure certain value, valve seat 10 (10) is in annular space pressure
Power acts on lower push the spring 5 (5) movement, and gasket 13 (13) no longer contacts sealing with the port of lower contact 14, this keeps casing pressure all
You are in the open state.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of casing pressure faner apparatus that leakproofness is stable, it is characterised in that：Including central tube, bullet is arranged with outside the central tube
The central tube of spring, the spring one end is bolted with top connection, top connection spiral shell on the outside of one end of the spring outside
It is connected to adjusting ring, piston is bolted with outside the central tube of the spring other end, the piston jacket is equipped with valve seat, the valve
Internal seat is staged cavity, and the staged cavity at ladder as boundary side with the piston slidingly and sealingly to connect, separately
Side is slidably connected with the central tube, the space with piston sliding in the staged cavity, and the valve seat is separate
One end outer cover of the piston is equipped with sheath, and the sheath is fixedly connected with the valve seat, and the central tube is close to the shield
Lower contact is arranged at set, the lower contact is threadedly coupled with the central tube, is equipped with and is allowed between the sheath and the valve seat
Position ring, is equipped with gasket in the resigning ring, and the lower contact is equipped with bulge loop close to described sheath one end, the bulge loop with it is described
Gasket cooperation is sealed the valve seat and the lower contact junction, and the central tube is radial at the lower contact
Equipped with the second liquid pass hole, the part that the staged cavity is contacted with the central tube can at least cover institute along axial length
The second liquid pass hole is stated, adjusts the spring to the pretightning force of the valve seat by tuning the adjusting ring.
2. the stable casing pressure faner apparatus of leakproofness according to claim 1, it is characterised in that：The central tube is radially
Equipped with the first liquid pass hole, first liquid pass hole is set in the space of piston sliding, and first liquid pass hole is described in
The distance of second liquid pass hole is greater than the part that contacts with the central tube of the staged cavity along the length of axial direction.
3. the stable casing pressure faner apparatus of leakproofness according to claim 1, it is characterised in that：The spring and the tune
It saves and is equipped with the first spring shim between ring, second spring gasket is equipped between the spring and the valve seat.
4. the stable casing pressure faner apparatus of leakproofness according to claim 1, it is characterised in that：The resigning ring is L-type,
The section of the gasket is L-type compatible with the resigning ring, and the initial line of the L is parallel to the axis of the central tube,
Radial direction of the end edge of the L along the central tube.
5. the stable casing pressure faner apparatus of leakproofness according to claim 1, it is characterised in that：The sheath and the valve
Seat is threadably secured connection.
6. the stable casing pressure faner apparatus of leakproofness according to claim 1-5, it is characterised in that：The piston
The O-shaped ring being equipped with by outer wall is connect with the valve base sealing.
7. the stable casing pressure faner apparatus of leakproofness according to claim 6, it is characterised in that：The O-shaped ring is flat
Two of row setting, and it is spaced apart between two O-shaped rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610196684.6A CN105822242B (en) | 2016-03-30 | 2016-03-30 | The stable casing pressure faner apparatus of leakproofness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610196684.6A CN105822242B (en) | 2016-03-30 | 2016-03-30 | The stable casing pressure faner apparatus of leakproofness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105822242A CN105822242A (en) | 2016-08-03 |
| CN105822242B true CN105822242B (en) | 2018-11-16 |
Family
ID=56526545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610196684.6A Active CN105822242B (en) | 2016-03-30 | 2016-03-30 | The stable casing pressure faner apparatus of leakproofness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105822242B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499360A (en) * | 2016-12-27 | 2017-03-15 | 中煤科工集团重庆研究院有限公司 | Coal mine underground hydraulic fracturing drilling and hole sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4597446A (en) * | 1982-11-29 | 1986-07-01 | Compagnie Francaise Des Petroles | Safety valves for wells |
| CN101270633A (en) * | 2008-04-24 | 2008-09-24 | 中国海洋石油总公司 | Constant-pressure injection pile-up valve for down-hole non-block production |
| CN201358771Y (en) * | 2009-02-27 | 2009-12-09 | 张瑾 | Restrictor capable of adjusting opening pressure of sliding sleeve |
| CN203702074U (en) * | 2013-11-25 | 2014-07-09 | 天津大港油田钻采技术开发公司 | Well flushable long rubber sleeve pressure differential water injection packer |
| CN204311997U (en) * | 2014-10-31 | 2015-05-06 | 中国石油化工集团公司 | A kind of pressure break reverse circulation valve |
-
2016
- 2016-03-30 CN CN201610196684.6A patent/CN105822242B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4597446A (en) * | 1982-11-29 | 1986-07-01 | Compagnie Francaise Des Petroles | Safety valves for wells |
| CN101270633A (en) * | 2008-04-24 | 2008-09-24 | 中国海洋石油总公司 | Constant-pressure injection pile-up valve for down-hole non-block production |
| CN201358771Y (en) * | 2009-02-27 | 2009-12-09 | 张瑾 | Restrictor capable of adjusting opening pressure of sliding sleeve |
| CN203702074U (en) * | 2013-11-25 | 2014-07-09 | 天津大港油田钻采技术开发公司 | Well flushable long rubber sleeve pressure differential water injection packer |
| CN204311997U (en) * | 2014-10-31 | 2015-05-06 | 中国石油化工集团公司 | A kind of pressure break reverse circulation valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105822242A (en) | 2016-08-03 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 300270 Tianjin Binhai New Area Dagang No.3 Hospital Co-patentee after: Dagang Oil Field Group Co., Ltd. Patentee after: Tianjin Dagang Oil Field Petroleum Engineering Research Institute Drilling Technology Development Co Ltd Address before: No.3 Dagang Oilfield, Tianjin Binhai New Area, 300280 Co-patentee before: Dagang Oil Field Group Co., Ltd. Patentee before: DRILLING TECHNOLOGY DEVELOPMENT COMPANY, TIANJIN DAGANG OILFIELD RESEARCH INSTITUTE OF PETROLEUM ENGINEERING |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201119 Address after: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin Patentee after: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. Patentee after: DAGANG OILFIELD GROUP Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 300270 Tianjin Binhai New Area Dagang No.3 Hospital Patentee before: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. Patentee before: DAGANG OILFIELD GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right |