CN105840130A - Main valve protector of shale gas production wellhead - Google Patents
Main valve protector of shale gas production wellhead Download PDFInfo
- Publication number
- CN105840130A CN105840130A CN201510020242.1A CN201510020242A CN105840130A CN 105840130 A CN105840130 A CN 105840130A CN 201510020242 A CN201510020242 A CN 201510020242A CN 105840130 A CN105840130 A CN 105840130A
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- CN
- China
- Prior art keywords
- main valve
- mandrel
- gas production
- lower flange
- shale gas
- 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.)
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a main valve protector of a shale gas production wellhead. The main valve protector comprises a valve body. The main valve protector of a shale gas production wellhead also comprises a mandrel and a lower flange arranged under the mandrel. The lower end of the mandrel is arranged in the lower flange. The lower flange is fixedly connected with the valve body in a bolt connection method. The upper end of the mandrel is provided with an upper flange. The upper flange is provided with a plurality of positioning nuts. A displacement lead screw is arranged between the positioning nut and the lower flange. The inner wall of the lower flange is provided with a plurality of groups of sealing components. Through the mandrel passing through a valve element when fracturing occurs, a fracturing fluid is prevented from washing the valve element, so as to improve service life of a manual flat valve and realize to reduce development cost. The main valve protector is simple in structure, convenient in installation and operation, and large in drift diameter, and reduces frictional resistance and construction pressure and achieves an objective of safety production.
Description
Technical field
The present invention relates to a kind of gas production wellhead main valve protector, be specifically designed the main valve of a kind of shale gas production wellhead
Protector.
Background technology
The domestic development at tree protector and application have been carried out practical exploration for many years.Issued from 1994
Since " SY/T 5861-93 pressure break wellhead protector " standard of cloth, domestic tree protector is constantly changed
Enter, " hydraulic base sealed tree protector " patent of such as Patent No. 201120240918.5, this patent
Before acid fracturing, protector is installed on oil recovery four-way top, uses hydraulic control, operated by control chamber,
Make glue tube base be encapsulated in the double public short circuit of oil pipe bottom, seal production tree and carry out acid fracturing construction, protect production tree
Do not washed away by fracturing fluid, and before work, carry out experiments of sealing performance.Owing to protector top is set to hydraulic pressure
Motor, drive lower seal short circuit setting, and Fuling shale gas exploitation use perforation bridging plug connection make, pressure break and
The yield-increasing technology that continuous tubing drill plug coordinates, this protector can not install fracture well head+continuous oil pipe operation pit
Mouthful.Rammell can as the source rock of gas and reservoir rock, reservoir have continuous distribution, low hole, special hypotonic,
The more high characteristic of fragility, but shale gas exploitation is before installing christmas tree, connection fracturing head on the big valve of 1#
Carrying out segmentation sand fracturing, the big valve of 1# washes away at the high-pressure work liquid of acid fracturing operation, easily loses efficacy, existing
Protector is all unable to reach requirement.
Summary of the invention
It is an object of the invention to provide the main valve protector of a kind of shale gas production wellhead, flap type is protected
Come, prevent extensive sand fracturing operation from valve being washed away, and meet perforation bridging plug connection make, staged fracturing and
The stimulation work such as continuous tubing drill plug.
The technical scheme is that and be achieved in that: the main valve protector of a kind of shale gas production wellhead, including
Valve body, the main valve protector of described gas production wellhead also includes mandrel and is located at the lower flange below mandrel, described
The lower end of mandrel is arranged in lower flange, and described lower flange is connected with valve body in bolted mode, described
The upper end of mandrel is provided with upper flange, and described upper flange is provided with multiple location nut, described location nut with under
Being provided with displacement leading screw between flange, the inwall of described lower flange is provided with organizes sealing member more.
Further, the lower end of described displacement leading screw is threaded connection that device and lower flange are fixing to be connected, institute
Rheme is moved the other end of leading screw and is connected through location nut and upper flange are fixing.
Further, described mandrel lower end is made up of pipe and matches with the inwall of lower flange.
Further, the quantity of described location nut is two and is symmetrical arranged on upper flange.Described sealing
The quantity of part is two groups.Manual platform spool it is provided with in described valve body.
The invention has the beneficial effects as follows: by making mandrel pass spool when there is pressure break, prevent fracturing fluid from rushing
Brush spool, thus improve the service life of manual flat valve, it is achieved reduce development cost.Present invention knot simultaneously
Structure is simple, it is simple to installs and operates, and latus rectum is big, and reduction frictional resistance and operation pressure reach the purpose of safety in production.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
The main valve protector of a kind of shale gas production wellhead as shown in Figure 1, including valve body 7, described gas production wellhead
Main valve protector also include mandrel 1 and be located at the lower flange 5 below mandrel 1, the lower end of described mandrel 1 sets
Putting in lower flange 5, described lower flange 5 is connected with valve body 7 in bolted mode, described mandrel 1
Upper end be provided with upper flange, described upper flange is provided with multiple location nut 2, described location nut 2 and purgation
Being provided with displacement leading screw 3 between blue 5, the inwall of described lower flange 5 is provided with many group sealing members 4.
The lower end of described displacement leading screw 3 is threaded connection that device and lower flange 5 is fixing to be connected, described displacement
The other end of leading screw 3 is connected through location nut 2 and upper flange are fixing.
(1 lower end is made up of pipe and matches with the inwall of lower flange 5 described core.
The quantity of described location nut 2 is two and is symmetrical arranged on upper flange.The number of described sealing member 4
Amount is two groups.It is provided with manual platform spool 6 in described valve body 7.
The Flange joint of the upper flange of mandrel 1 and pressurized wellhead device is fixed, and operates manual flat valve, is valve
Body 7 is in open mode, then operation location nut 2, makes location nut 2 move down along displacement leading screw 3, core
Axle 1 and location nut 2 together move down, when the end of the lower end steel cylinder of mandrel 1 passes manual platform spool 6
Rear stopping motion action, when being in this state, when there is pressure break, fracturing fluid is blocked by mandrel 1, reaches
To the purpose preventing fracturing fluid from washing away manual platform spool 6.After pressing crack construction terminates, operation location nut 2
Move on displacement leading screw 3 it is known that the pipe of mandrel 2 bottom proposes to stop during manual platform spool 6.Again
Operating valve body 7, makes valve body be closed, and reaches the effect to valve body 7 protection.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (6)
1. a main valve protector for shale gas production wellhead, including valve body (7), it is characterised in that: described
The main valve protector of gas production wellhead also includes mandrel (1) and is located at the lower flange (5) of mandrel (1) lower section,
The lower end of described mandrel (1) is arranged in lower flange (5), and described lower flange (5) is with bolted side
Formula is connected with valve body (7), and the upper end of described mandrel (1) is provided with upper flange, and described upper flange is provided with many
Individual location nut (2), is provided with displacement leading screw (3) between described location nut (2) and lower flange (5),
The inwall of described lower flange (5) is provided with organizes sealing member (4) more.
2. the main valve protector of shale gas production wellhead as claimed in claim 1, it is characterised in that: institute's rheme
Move the lower end of leading screw (3) to be threaded connection device and lower flange (5) and fix and be connected, described displacement leading screw
(3) the other end is connected through location nut (2) and upper flange are fixing.
3. the main valve protector of shale gas production wellhead as claimed in claim 1, it is characterised in that: described core
Axle (1) lower end is made up of pipe and matches with the inwall of lower flange (5).
4. the main valve protector of shale gas production wellhead as claimed in claim 1, it is characterised in that: described fixed
The quantity of position nut (2) is two and is symmetrical arranged on upper flange.
5. the main valve protector of shale gas production wellhead as claimed in claim 1, it is characterised in that: described close
The quantity of sealing (4) is two groups.
6. the main valve protector of shale gas production wellhead as claimed in claim 1, it is characterised in that: described valve
Manual platform spool (6) it is provided with in body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020242.1A CN105840130A (en) | 2015-01-15 | 2015-01-15 | Main valve protector of shale gas production wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510020242.1A CN105840130A (en) | 2015-01-15 | 2015-01-15 | Main valve protector of shale gas production wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105840130A true CN105840130A (en) | 2016-08-10 |
Family
ID=56580002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510020242.1A Pending CN105840130A (en) | 2015-01-15 | 2015-01-15 | Main valve protector of shale gas production wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105840130A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6817423B2 (en) * | 2002-06-03 | 2004-11-16 | L. Murray Dallas | Wall stimulation tool and method of using same |
| CN2746242Y (en) * | 2004-11-29 | 2005-12-14 | 天津市燃气集团有限公司第一销售分公司管线所 | Apparatus for changing sluice valve and valve pad |
| CN2797611Y (en) * | 2005-04-29 | 2006-07-19 | 吉林石油集团有限责任公司 | Straight-through type fracture wellhead casing protector |
| CN200955369Y (en) * | 2006-09-17 | 2007-10-03 | 辽河石油勘探局 | Large-full-bore crack well-head protector |
| CN201013281Y (en) * | 2007-03-01 | 2008-01-30 | 中国石油天然气股份有限公司 | Special tool for disassembling and assembling eccentric well mouth |
| WO2009154881A1 (en) * | 2008-06-19 | 2009-12-23 | Cameron International Corporation | Frac adapter for wellhead |
| CN101666413A (en) * | 2009-09-24 | 2010-03-10 | 钊田 | Mechanical pipeline under-pressure blocker and blocking method thereof |
| CN201915875U (en) * | 2010-12-28 | 2011-08-03 | 北京金鼎通达油气技术服务有限责任公司 | Non-release valve changing device for main valve of oil bushing |
| CN201963232U (en) * | 2011-02-14 | 2011-09-07 | 中国石油天然气股份有限公司 | Gas well head protector case assembly and disassembly tools |
| CN202157777U (en) * | 2011-07-08 | 2012-03-07 | 中国石油天然气股份有限公司 | Wellhead protector for hydraulic setting |
| CN203214006U (en) * | 2013-04-25 | 2013-09-25 | 盘锦勇盛利石油科技开发有限公司 | Device for under-pressure replacement of wellhead gate valve |
-
2015
- 2015-01-15 CN CN201510020242.1A patent/CN105840130A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6817423B2 (en) * | 2002-06-03 | 2004-11-16 | L. Murray Dallas | Wall stimulation tool and method of using same |
| CN2746242Y (en) * | 2004-11-29 | 2005-12-14 | 天津市燃气集团有限公司第一销售分公司管线所 | Apparatus for changing sluice valve and valve pad |
| CN2797611Y (en) * | 2005-04-29 | 2006-07-19 | 吉林石油集团有限责任公司 | Straight-through type fracture wellhead casing protector |
| CN200955369Y (en) * | 2006-09-17 | 2007-10-03 | 辽河石油勘探局 | Large-full-bore crack well-head protector |
| CN201013281Y (en) * | 2007-03-01 | 2008-01-30 | 中国石油天然气股份有限公司 | Special tool for disassembling and assembling eccentric well mouth |
| WO2009154881A1 (en) * | 2008-06-19 | 2009-12-23 | Cameron International Corporation | Frac adapter for wellhead |
| CN101666413A (en) * | 2009-09-24 | 2010-03-10 | 钊田 | Mechanical pipeline under-pressure blocker and blocking method thereof |
| CN201915875U (en) * | 2010-12-28 | 2011-08-03 | 北京金鼎通达油气技术服务有限责任公司 | Non-release valve changing device for main valve of oil bushing |
| CN201963232U (en) * | 2011-02-14 | 2011-09-07 | 中国石油天然气股份有限公司 | Gas well head protector case assembly and disassembly tools |
| CN202157777U (en) * | 2011-07-08 | 2012-03-07 | 中国石油天然气股份有限公司 | Wellhead protector for hydraulic setting |
| CN203214006U (en) * | 2013-04-25 | 2013-09-25 | 盘锦勇盛利石油科技开发有限公司 | Device for under-pressure replacement of wellhead gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |