CN104775784B - Oil field wellhead device and pressureout prevention device for Christmas tree - Google Patents
Oil field wellhead device and pressureout prevention device for Christmas tree Download PDFInfo
- Publication number
- CN104775784B CN104775784B CN201510105017.8A CN201510105017A CN104775784B CN 104775784 B CN104775784 B CN 104775784B CN 201510105017 A CN201510105017 A CN 201510105017A CN 104775784 B CN104775784 B CN 104775784B
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- Prior art keywords
- valve
- pressure
- passage
- builds
- head
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- 241000191291 Abies alba Species 0.000 title abstract 5
- 230000002265 prevention Effects 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 16
- 239000003129 oil well Substances 0.000 abstract description 6
- 230000006378 damage Effects 0.000 description 6
- 239000003921 oil Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (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 invention relates to an oil field wellhead device and a pressureout prevention device for a Christmas tree. A series of channels are designed to be arranged on an original valve device; after a wellhead device and a valve on the Christmas tree are closed due to man-made sabotage or faulty operation, a downhole oil well pump continuously produces liquid, so that the pressure rises, the series of channels are opened, and the high-pressure liquid is led out. The oil field wellhead device and the pressureout prevention device for the Christmas tree can be used for solving the problem of overflowing of output liquid of the wellhead device and the Christmas tree due to the man-made sabotage or the faulty operation at present.
Description
Technical field
The invention belongs to OFME field, is related to the anti-dress that builds the pressure of a kind of oil-field well head device and production tree
Put.
Background technology
Valve on existing wellhead assembly and production tree, when due to the destruction of stolen molecule or oil recovery work maloperation, and closes
When falling to produce valve, because the motor of now oil pumper is still in operating, the oil well pump of down-hole persistently produces liquid, then causes well
Pressure is stepped up on mouth device and production tree, when pressure exceedes the pressure limit that polished rod sealer thereon can bear,
The high pressure mixing liquid that will result in inside sprays, because the mining area major part well head in oil field is all in unattended field, it is difficult to
Found in time, when often finding, polluted the environment and soil around well head, not only increased the expense of process, and
And have impact on normal production.Accordingly, it would be desirable to be directed to a kind of anti-device that builds the pressure of this kind of situation design.
The content of the invention
It is an object of the invention to provide the anti-device that builds the pressure of a kind of oil-field well head device and production tree, solve at present due to
Artificial destruction or faulty operation and by the valve closing on wellhead assembly and production tree after, because the oil well pump of down-hole persistently produces liquid
Cause pressure rise, easily cause the problem of well inner high voltage liquid ejection.
The present invention is achieved through the following technical solutions：A kind of oil-field well head device and the anti-device that builds the pressure of production tree,
Including valve core, valve rod, valve head and valve seat, valve rod is sleeved on valve core center of inside, and valve rod bottom connection valve head, valve head sits dress
In valve seat, described valve element body side surface is provided with hole, is passage one；Described valve rod side is horizontal with the corresponding position of passage one
To being provided with passage two, stem internal has in cavity one, cavity one and is sequentially arranged with adjusting screw, the anti-valve head and multiple of building the pressure from top to bottom
Position spring, is threaded connection between described adjusting screw and valve rod, and passage three is provided with adjusting screw, and passage three is T-shaped
Or L-type, the cavity one on the outside of the transverse branch connection adjusting screw of passage three, adjusting screw bottom is provided with cavity two, cavity volume two
Connect with longitudinal branch of passage three；The described anti-valve head that builds the pressure is cylinder, and the anti-valve head that builds the pressure is entered in cavity volume two and top
Longitudinal branch of closure passage three, is equipped with back-moving spring between bottom and valve head, on the anti-valve head that builds the pressure multiple passages are longitudinally provided with
Four；Passage five and valve seat connection are provided with described valve head in the position corresponding with back-moving spring.
Further, it is additionally provided with holding screw between described valve rod and adjusting screw.
Further, described valve rod bottom periphery has cannelure, and valve rod bottom is inserted in cannelure by stop screw
It is connected with valve head.
Further, described anti-shutoff pressure valve overhead is wedge shape.
Further, described seat bottom portion is also equipped with combination sealing pad.
Using the good effect of above-mentioned technical proposal：The present invention is the improvement carried out on the valving of crude oil, works as people
For destruction or faulty operation and by the valve closing on wellhead assembly and production tree after, lead because the oil well pump of down-hole persistently produces liquid
Pressure rise is caused, so as to open a series of passage of the present invention, highly pressurised liquid is derived, prevent highly pressurised liquid from spraying, maintained
Normal production.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure, 1 valve core, 2 valve rods, 3 valve heads, 4 valve seats, 5 passages one, 6 passages two, 7 cavitys one, 8 adjusting screws, 9 prevent
Build the pressure valve head, 10 back-moving springs, 11 passages three, 12 cavity volumes two, 13 passages four, 14 passages five, 15 holding screws, 16 spacing spiral shells
Nail, 17 combination sealing pads.
Specific embodiment
Technical scheme is described further below in conjunction with the accompanying drawings, but should not be construed as the limit to the present invention
System：
Fig. 1 is the structural representation of the present invention, as illustrated, the anti-dress that builds the pressure of a kind of oil-field well head device and production tree
Put, including valve core 1, valve rod 2, valve head 3 and valve seat 4, valve rod 2 is sleeved on the center of inside of valve core 1, the bottom connection valve of valve rod 2
3, valve head 3 is sat and is mounted in valve seat 4, and the described side of valve core 1 is provided with hole, is passage 1.Move on valve head when valve rod drives,
Valve is opened, i.e. channel connection on passage one and valve seat；When valve rod drives valve head descending, valve head is sat and is mounted in valve seat, valve
Close.The described side of valve rod 2 is laterally being provided with passage 26 with the corresponding position of passage 1, and passage one and passage two are communicated.
Have inside valve rod 2 in cavity 1, cavity 1 and be sequentially arranged with adjusting screw 8, anti-build the pressure valve head 9 and back-moving spring from top to bottom
10, it is threaded connection between described adjusting screw 8 and valve rod 2, the position of adjusting screw can be adjusted by screw thread.Adjustment
Passage 3 11 is provided with leading screw 8, passage 3 11 is T-shaped or L-type, the outside of transverse branch connection adjusting screw 8 of passage 3 11
Cavity 1, passage two is connected with passage three by the indirectly-acting of cavity volume one.The bottom of adjusting screw 8 is provided with cavity 2 12, holds
Chamber 2 12 connects with longitudinal branch of passage 3 11.The described anti-valve head 9 that builds the pressure is cylinder, and the anti-valve head 9 that builds the pressure enters cavity volume
In 2 12 and top blocks longitudinal branch of passage 3 11, and back-moving spring 10 is housed between bottom and valve head 3, is used to help anti-suppressing
Pressure valve head resets, and the upper shifting of adjusting screw or moves down, and can adjust the pressure of back-moving spring.Longitudinal direction on the anti-valve head 9 that builds the pressure
Multiple passages 4 13 are provided with, when the anti-valve head that builds the pressure is moved down, longitudinal branch of passage three is opened, passage three can connect with passage four
It is logical.In the position corresponding with back-moving spring 10 passage 5 14 is provided with described valve head 3 and valve seat 4 is connected, therefore, passage
First, passage two, passage three, passage, passage five are connected in succession, so with valve seat on channel connection, define except the He of passage one
Another path outside channel connection on valve seat, can carry out pressure release in valve closing.
In order to be fixed to the position of adjusting screw, between described valve rod 2 and adjusting screw 8 holding screw is additionally provided with
15。
During due to using, valve rod is descending for rotation, and easily causes valve seat damage to prevent valve rod and valve head from rotating together
Bad problem, the described bottom periphery of valve rod 2 has a cannelure, the bottom of valve rod 2 by stop screw 16 insert in cannelure with valve
3 are connected.This kind of design can ensure that valve rod rotates and valve head does not turn, and be directly entered valve seat and produce sealing, prevent valve seat to be damaged.
For sealing effectiveness more preferably, and also for easy stress, the described anti-top of valve head 9 that builds the pressure is wedge shape, wedge shape
Anti- shutoff pressure valve overhead can be partially into the longitudinal branch in passage three.
Further, the described bottom of valve seat 4 is also equipped with combination sealing pad 17, primarily to ensureing sealing, anti-leak-stopping
Liquid.
During normal production, the pressure balance before and after the anti-valve head that builds the pressure, anti-resilient force of the valve head in back-moving spring that build the pressure
Under, head on the anti-valve head that builds the pressure carries out rigid metal sealing with adjusting screw.When artificial destruction or faulty operation and by wellhead assembly
After the valve closing on production tree, the oil well pump of down-hole persistently produces liquid, then cause on wellhead assembly and production tree pressure progressively
Raise, the Fluid pressure before passage one is raised, during more than the pressure value for setting, fluid enters cavity from passage one by passage two
One, into passage three, the anti-valve head that builds the pressure is backed down, passage five was entered by the anti-passage four on valve head that builds the pressure, finally from valve seat
On passage flow out, realize pressure release.After pressure recovers normal, the anti-valve head that builds the pressure can be under the effect of the elastic force of back-moving spring slowly
Playback, blocks passage three, it is ensured that liquid no longer flows out again.
The present invention is the improvement carried out on the valving of crude oil, when artificial destruction or faulty operation and by wellhead assembly
After the valve closing on production tree, because the oil well pump of down-hole persistently produces liquid pressure rise is caused, so as to open the present invention's
A series of passage, highly pressurised liquid is derived, and prevents highly pressurised liquid from spraying, and maintains normal production.
Claims (5)
1. a kind of anti-device that builds the pressure of oil-field well head device and production tree, including valve core（1）, valve rod（2）, valve head（3）With
Valve seat（4）, valve rod（2）It is sleeved on valve core（1）Center of inside, valve rod（2）Bottom connects valve head（3）, valve head（3）Seat is mounted in valve
Seat（4）Interior, described valve core（1）Side is provided with hole, is passage one（5）, it is characterised in that：Described valve rod（2）Side exists
With passage one（5）Corresponding position is laterally provided with passage two（6）, valve rod（2）There is cavity one inside（7）, cavity（7）It is interior from upper
Adjusting screw is sequentially arranged with（8）, the anti-valve head that builds the pressure（9）And back-moving spring（10）, described adjusting screw（8）With valve rod
（2）Between be threaded connection, adjusting screw（8）On be provided with passage three（11）, passage three（11）For T-shaped or L-type, passage three
（11）Transverse branch connection adjusting screw（8）The cavity one in outside（7）, adjusting screw（8）Bottom is provided with cavity two（12）, hold
Chamber two（12）With passage three（11）Longitudinal branch connection；The described anti-valve head that builds the pressure（9）For cylinder, the anti-valve head that builds the pressure（9）
Into cavity volume two（12）In and top closure passage three（11）Longitudinal branch, bottom and valve head（3）Between be equipped with back-moving spring
（10）, the anti-valve head that builds the pressure（9）Upper longitudinal direction is provided with multiple passages four（13）；Described valve head（3）On with back-moving spring（10）Phase
Corresponding position is provided with passage five（14）And valve seat（4）Connection.
2. the anti-device that builds the pressure of oil-field well head device according to claim 1 and production tree, it is characterised in that：Described
Valve rod（2）And adjusting screw（8）Between be additionally provided with holding screw（15）.
3. the anti-device that builds the pressure of oil-field well head device according to claim 1 and production tree, it is characterised in that：Described
Valve rod（2）Bottom periphery has cannelure, valve rod（2）Bottom passes through stop screw（16）With valve head in insertion cannelure（3）It is connected
Connect.
4. the anti-device that builds the pressure of oil-field well head device according to claim 1 and production tree, it is characterised in that：Described
The anti-valve head that builds the pressure（9）Top is wedge shape.
5. the anti-device that builds the pressure of oil-field well head device according to claim 1 and production tree, it is characterised in that：Described
Valve seat（4）Bottom is also equipped with combination sealing pad（17）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105017.8A CN104775784B (en) | 2015-03-11 | 2015-03-11 | Oil field wellhead device and pressureout prevention device for Christmas tree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510105017.8A CN104775784B (en) | 2015-03-11 | 2015-03-11 | Oil field wellhead device and pressureout prevention device for Christmas tree |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104775784A CN104775784A (en) | 2015-07-15 |
| CN104775784B true CN104775784B (en) | 2017-05-10 |
Family
ID=53617508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510105017.8A Active CN104775784B (en) | 2015-03-11 | 2015-03-11 | Oil field wellhead device and pressureout prevention device for Christmas tree |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104775784B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882830A (en) * | 2021-09-10 | 2022-01-04 | 江苏双辉机械制造有限公司 | Energy-saving environment-friendly casing head |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3695349A (en) * | 1970-03-19 | 1972-10-03 | Hydril Co | Well blowout preventer control pressure modulator |
| US3721264A (en) * | 1971-10-20 | 1973-03-20 | D Coughlin | Combination shut-off check and pressure surge relief valve |
| CN2346927Y (en) * | 1997-04-02 | 1999-11-03 | 胜利石油管理局临盘采油厂采油二矿 | Producing well technical combined valve |
| CN201517394U (en) * | 2009-10-19 | 2010-06-30 | 孙爱军 | Anti-theft blocking-removing check valve of oil production well head |
| CN101787866A (en) * | 2010-02-25 | 2010-07-28 | 中国石油天然气股份有限公司 | Pilot-operated self-holding electromagnetic valve for gas well mouth |
| CN202531101U (en) * | 2011-12-15 | 2012-11-14 | 中国石油天然气股份有限公司 | Gas well wellhead pressure reduction well opening device |
| CN203906897U (en) * | 2014-06-09 | 2014-10-29 | 成都华气厚普机电设备股份有限公司 | Low-temperature safety check valve |
| CN203948643U (en) * | 2014-06-12 | 2014-11-19 | 山东裕鸿阀门股份有限公司 | Pilot-operated type adjusting valve |
-
2015
- 2015-03-11 CN CN201510105017.8A patent/CN104775784B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3695349A (en) * | 1970-03-19 | 1972-10-03 | Hydril Co | Well blowout preventer control pressure modulator |
| US3721264A (en) * | 1971-10-20 | 1973-03-20 | D Coughlin | Combination shut-off check and pressure surge relief valve |
| CN2346927Y (en) * | 1997-04-02 | 1999-11-03 | 胜利石油管理局临盘采油厂采油二矿 | Producing well technical combined valve |
| CN201517394U (en) * | 2009-10-19 | 2010-06-30 | 孙爱军 | Anti-theft blocking-removing check valve of oil production well head |
| CN101787866A (en) * | 2010-02-25 | 2010-07-28 | 中国石油天然气股份有限公司 | Pilot-operated self-holding electromagnetic valve for gas well mouth |
| CN202531101U (en) * | 2011-12-15 | 2012-11-14 | 中国石油天然气股份有限公司 | Gas well wellhead pressure reduction well opening device |
| CN203906897U (en) * | 2014-06-09 | 2014-10-29 | 成都华气厚普机电设备股份有限公司 | Low-temperature safety check valve |
| CN203948643U (en) * | 2014-06-12 | 2014-11-19 | 山东裕鸿阀门股份有限公司 | Pilot-operated type adjusting valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104775784A (en) | 2015-07-15 |
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