CN104775784A - 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
- CN104775784A CN104775784A CN201510105017.8A CN201510105017A CN104775784A CN 104775784 A CN104775784 A CN 104775784A CN 201510105017 A CN201510105017 A CN 201510105017A CN 104775784 A CN104775784 A CN 104775784A
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- CN
- China
- Prior art keywords
- valve
- passage
- pressure
- builds
- head
- Prior art date
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- Granted
Links
- 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 25
- 238000007789 sealing Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 abstract description 10
- 239000003129 oil well Substances 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 7
- 230000006378 damage Effects 0.000 description 5
- 239000003921 oil Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000002184 metal Substances 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, relate to the anti-device that builds the pressure of a kind of oil-field well head device and production tree.
Background technology
Valve on existing wellhead assembly and production tree, when due to stolen molecule destroys or the maloperation of oil recovery work, and when turning off production valve, because the motor of now oil pumper is still in running, the oil well pump of down-hole continues production fluid, pressure on wellhead assembly and production tree is then caused progressively to raise, when the pressure limit that the polished rod sealer that pressure exceedes on it can bear, inner high pressure mixing liquid ejection will be caused, because the mining area major part well head in oil field is all in unattended field, be difficult to by Timeliness coverage, when often finding, the environment around well head and soil are polluted, not only add the expense of process, and have impact on normal production.Therefore, need for this kind of a kind of anti-device that builds the pressure of situation design.
Summary of the invention
The object of this invention is 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 by after the valve closing on wellhead assembly and production tree, oil well pump due to down-hole continues production fluid and causes pressure to raise, and easily causes the problem that well inner high voltage liquid sprays.
The present invention is achieved through the following technical solutions: the anti-device that builds the pressure of a kind of oil-field well head device and production tree, comprise valve core, valve rod, valve head and valve seat, valve stem sleeve is contained in valve core center of inside, valve rod bottom connects valve head, valve head is sat and is contained in valve seat, described valve core side opening is porose, is passage one; Described valve rod side laterally has passage two in the position corresponding with passage one, stem internal has cavity one, adjusting screw, anti-build the pressure valve head and back-moving spring are housed in cavity one from top to bottom successively, be threaded connection between described adjusting screw and valve rod, adjusting screw has passage three, passage three is T-shaped or L-type, and the transverse branch of passage three is communicated with the cavity one outside adjusting screw, have cavity two bottom adjusting screw, cavity volume two is communicated 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 to enter in cavity volume two and longitudinal branch of top shutoff passage three, between bottom and valve head, back-moving spring is housed, the anti-valve head that builds the pressure longitudinally has multiple passage four; Described valve head has passage five in the position corresponding with back-moving spring be communicated with valve seat.
Further, also holding screw is provided with 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 and is connected with valve head.
Further, described anti-shutoff pressure valve crown portion is wedge shape.
Further, described seat bottom portion is also equipped with combination sealing pad.
Adopt the good effect of technique scheme: the present invention is the improvement carried out on the valving of crude oil, after when artificial destruction or faulty operation and by the valve closing on wellhead assembly and production tree, oil well pump due to down-hole continues production fluid and causes pressure to raise, thus open a series of passage of the present invention, highly pressurised liquid is derived, prevent highly pressurised liquid from spraying, maintain and normally produce.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, 1 valve core, 2 valve rods, 3 valve heads, 4 valve seats, 5 passages one, 6 passage two, 7 cavity one, 8 adjusting screws, the 9 anti-valve heads that build the pressure, 10 back-moving springs, 11 passages three, 12 cavity volume two, 13 passage four, 14 passage five, 15 holding screws, 16 stop screws, 17 combination sealing pads.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further, but should not be construed as limitation of the present invention:
Fig. 1 is structural representation of the present invention, as shown in the figure, the anti-device that builds the pressure of a kind of oil-field well head device and production tree, comprise valve core 1, valve rod 2, valve head 3 and valve seat 4, valve rod 2 is sleeved on valve core 1 center of inside, and valve rod 2 bottom connects valve head 3, and valve head 3 is sat and is contained in valve seat 4, described valve core 1 side opening is porose, is passage 1.Move when valve rod drives on valve head, valve open, i.e. passage one and the channel connection on valve seat; When valve rod drives valve head descending, valve head is sat and is contained in valve seat, valve closing.Described valve rod 2 side laterally has passage 26 in the position corresponding with passage 1, and passage one and passage two communicate.There is cavity 1 valve rod 2 inside, adjusting screw 8, anti-build the pressure valve head 9 and back-moving spring 10 is housed in cavity 1 from top to bottom successively, is threaded connection, can be regulated the position of adjusting screw by screw thread between described adjusting screw 8 and valve rod 2.Adjusting screw 8 has passage 3 11, passage 3 11 is T-shaped or L-type, and the transverse branch of passage 3 11 is communicated with the cavity 1 outside adjusting screw 8, and passage two is connected with the indirectly-acting of passage three by cavity volume one.Have cavity 2 12 bottom adjusting screw 8, cavity volume 2 12 is communicated with longitudinal branch of passage 3 11.The described anti-valve head 9 that builds the pressure is for cylinder, the anti-valve head 9 that builds the pressure to enter in cavity volume 2 12 and longitudinal branch of top shutoff passage 3 11, between bottom and valve head 3, back-moving spring 10 is housed, for helping the anti-valve head that builds the pressure to reset, adjusting screw moving or moves down, the pressure of back-moving spring can be regulated.The anti-valve head 9 that builds the pressure longitudinally has multiple passage 4 13, and when the anti-valve head that builds the pressure moves down, open longitudinal branch of passage three, passage three can be communicated with passage four.Described valve head 3 has passage 5 14 in the position corresponding with back-moving spring 10 be communicated with valve seat 4, therefore, passage one, passage two, passage three, passage, passage five are communicated with in succession, and then and valve seat on channel connection, define another path except the channel connection on passage one and valve seat, pressure release can be carried out when valve closing.
In order to be fixed the position of adjusting screw, between described valve rod 2 and adjusting screw 8, be also provided with holding screw 15.
During owing to using, valve rod is descending for rotating, and in order to prevent valve rod from rotating the problem easily causing valve seat damage together with valve head, described valve rod 2 bottom periphery has cannelure, and valve rod 2 bottom is inserted in cannelure by stop screw 16 and is connected with valve head 3.This kind of design can ensure that valve rod rotates and valve head does not turn, and direct admission valve seat produces sealing, prevents valve seat impaired.
In order to sealing effectiveness is better, and also in order to easily stressed, described anti-valve head 9 top that builds the pressure is wedge shape, and the anti-shutoff pressure valve crown portion of wedge shape can longitudinal branch in part admission passage three.
Further, bottom described valve seat 4, combination sealing pad 17 being also housed, mainly in order to ensure sealing, preventing leakage.
During normal production, the pressure balance before and after the anti-valve head that builds the pressure, anti-ly builds the pressure valve head under the resilient force of back-moving spring, heads on anti-valve head and the adjusting screw of building the pressure and carries out rigid metal sealing.After when artificial destruction or faulty operation and by the valve closing on wellhead assembly and production tree, the oil well pump of down-hole continues production fluid, then cause pressure on wellhead assembly and production tree progressively to raise, the fluid pressure before passage one raises, when exceeding the force value of setting, fluid enters cavity one from passage one by passage two, admission passage three, backs down the anti-valve head that builds the pressure, and enters passage five by the anti-passage four built the pressure on valve head, finally flow out from the passage valve seat, realize pressure release.After pressure recover is normal, the anti-valve head that builds the pressure slowly can playback under the elastic force effect of back-moving spring, shutoff passage three again, ensures that liquid no longer flows out.
The present invention is the improvement carried out on the valving of crude oil, after when artificial destruction or faulty operation and by the valve closing on wellhead assembly and production tree, oil well pump due to down-hole continues production fluid and causes pressure to raise, thus open a series of passage of the present invention, highly pressurised liquid is derived, prevent highly pressurised liquid from spraying, maintain and normally produce.
Claims (5)
1. the anti-device that builds the pressure of an oil-field well head device and production tree, comprise valve core (1), valve rod (2), valve head (3) and valve seat (4), valve rod (2) is sleeved on valve core (1) center of inside, valve rod (2) bottom connects valve head (3), valve head (3) is sat and is contained in valve seat (4), described valve core (1) side opening is porose, for passage one (5), it is characterized in that: described valve rod (2) side laterally has passage two (6) in the position corresponding with passage one (5), there is cavity one (7) valve rod (2) inside, in cavity one (7), adjusting screw (8) is housed from top to bottom successively, anti-build the pressure valve head (9) and back-moving spring (10), be threaded connection between described adjusting screw (8) and valve rod (2), adjusting screw (8) has passage three (11), passage three (11) is T-shaped or L-type, the transverse branch of passage three (11) is communicated with the cavity one (7) in adjusting screw (8) outside, adjusting screw (8) bottom has cavity two (12), cavity volume two (12) is communicated with longitudinal branch of passage three (11), the described anti-valve head that builds the pressure (9) is cylinder, the anti-valve head (9) that builds the pressure to enter in cavity volume two (12) and longitudinal branch of top shutoff passage three (11), between bottom and valve head (3), back-moving spring (10) is housed, the anti-valve head (9) that builds the pressure is upper longitudinally has multiple passage four (13), described valve head (3) has passage five (14) in the position corresponding with back-moving spring (10) be communicated with valve seat (4).
2. the anti-device that builds the pressure of oil-field well head device according to claim 1 and production tree, is characterized in that: be also provided with holding screw (15) between described valve rod (2) and adjusting screw (8).
3. the anti-device that builds the pressure of oil-field well head device according to claim 1 and production tree, it is characterized in that: described valve rod (2) bottom periphery has cannelure, valve rod (2) bottom is inserted in cannelure by stop screw (16) and is connected with valve head (3).
4. the anti-device that builds the pressure of oil-field well head device according to claim 1 and production tree, is characterized in that: the described 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, is characterized in that: combination sealing pad (17) is also equipped with in described valve seat (4) bottom.
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 true CN104775784A (en) | 2015-07-15 |
| CN104775784B 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) |
Cited By (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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104775784B (en) | 2017-05-10 |
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