CN204371228U - A kind of oil well casing pressure control device - Google Patents
A kind of oil well casing pressure control device Download PDFInfo
- Publication number
- CN204371228U CN204371228U CN201420762360.0U CN201420762360U CN204371228U CN 204371228 U CN204371228 U CN 204371228U CN 201420762360 U CN201420762360 U CN 201420762360U CN 204371228 U CN204371228 U CN 204371228U
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- China
- Prior art keywords
- pressure
- steel ball
- valve body
- push rod
- cut
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- 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.)
- Expired - Fee Related
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 67
- 239000010959 steel Substances 0.000 claims abstract description 67
- 230000001012 protector Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000005086 pumping Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 19
- 239000003921 oil Substances 0.000 description 15
- 239000010779 crude oil Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000013022 venting Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model belongs to technical field of oil production engineering, specifically provide a kind of oil well casing pressure control device, comprise valve body, described valve body leading inside is connected with pressure cap, valve inner is set with ball seat, cut-off steel ball and steel ball push rod, ball seat is connected with pressure cap, cut-off steel ball is placed between ball seat and steel ball push rod, pressure regulator valve is set with inside steel ball push rod, pressure spring is socketed with outside pressure regulator valve, pressure spring connects with steel ball push rod, valve body lateral tail is connected with tail cap, tail cap one sidewall is connected with pressure regulation interface, pressure regulation interface communicates with the pressure regulation chamber of valve body, valve body between described cut-off steel ball and pressure regulator valve is provided with exhaust port.This utility model regulates the opening pressure of cut-off steel ball by pressure regulation interface, realizes automatically controlling casing pressure, solves oil well casing pressure and controls the large problem of labor workload, improve oil pumping pump efficiency and system effectiveness, recyclable associated gas simultaneously, eliminates discharge, reduces environment pollution and potential safety hazard.
Description
Technical field
The utility model belongs to technical field of oil production engineering, is specifically related to a kind of oil well casing pressure control device.
Background technology
The a large amount of natural gases be dissolved at high temperature under high pressure in stratigraphic oil pool are called solution gas.In crude oil production, solution gas is main displacement of reservoir oil power, relies on the expansion of gas and is separated crude oil from formation pore displacement to producing well.Along with fluid enters producing well, pressure reduces gradually, and solution gas is separated into free gas gradually from crude oil, and slowly expands, until depart from crude oil to enter oil sets annular space, this part gas is then casing gas.
And if casing gas Stress control is unreasonable or unlimited venting, not only reduce oil well pump coefficient of fullness, produce gas lock phenomenon, reduce oil well pump efficiency, oil well pump time serious, can be made normally to work, but also natural gas can be caused to waste and serious atmosphere pollution.
At present, it is Artificial Control emptying that the casing pressure control device that oil field at home is conventional mainly contains two kinds: one, artificial emptying or unlimited wellhead venting for a long time after casing pressure reaches certain value; Two is the valve member emptying with having voltage regulation function, but existing pressure regulation is not directly perceived, artificial long-term observation must can draw controlled pressure value.The labor workload of these two kinds of methods is all very large, and efficiency is low.
Utility model content
The purpose of this utility model is to provide a kind of oil well casing pressure control device, and overcome oil well casing pressure in existing crude oil production and control labor workload greatly, efficiency is low, can not realize the problem automatically controlling casing pressure.
For this reason, the utility model provides a kind of oil well casing pressure control device, comprise valve body, described valve body leading inside is connected with pressure cap, described valve inner is set with ball seat, cut-off steel ball and steel ball push rod, described ball seat is connected with pressure cap, described cut-off steel ball is placed between ball seat and steel ball push rod, pressure regulator valve is set with inside described steel ball push rod, pressure spring is socketed with outside described pressure regulator valve, described pressure spring connects with steel ball push rod, described valve body lateral tail is connected with tail cap, described tail cap one sidewall is connected with pressure regulation interface, described pressure regulation interface communicates with the pressure regulation chamber of valve body, valve body between described cut-off steel ball and pressure regulator valve is provided with exhaust port.
Above-mentioned tail cap afterbody is connected locking cap by lock screw with lock(ing) bolt.
The afterbody of above-mentioned pressure regulator valve is connected with locking cap.
Above-mentioned pressure regulation interface is provided with thread protector.
The area equation of the above-mentioned pressure-bearing surface of cut-off steel ball and the sealing surface of pressure regulator valve.
The beneficial effects of the utility model: this oil well casing pressure control device that the utility model provides regulates the opening pressure of cut-off steel ball by pressure regulation interface, realize automatically controlling casing pressure, solve oil well casing pressure and control the large problem of labor workload, improve oil pumping pump efficiency and system effectiveness, recyclable associated gas simultaneously, eliminate discharge, reduce environment pollution and potential safety hazard.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model oil well casing pressure control device.
Fig. 2 is the scheme of installation of the utility model oil well casing pressure control device on oil well.
Description of reference numerals: 1, valve body; 2, pressure cap; 3, ball seat; 4, steel ball is ended; 5, steel ball push rod; 6, pressure spring; 7, pressure regulator valve; 8, tail cap; 9, pressure regulation interface; 10, thread protector; 11, lock screw; 12, locking cap; 13, lock bolt; 14, exhaust port; 15, pressure regulation chamber; 16, sleeve valve; 17, gas gathering line.
Detailed description of the invention
Embodiment 1:
Large in order to overcome oil well casing pressure control labor workload in existing crude oil production, efficiency is low, the problem automatically controlling casing pressure can not be realized, present embodiments provide a kind of oil well casing pressure control device as depicted in figs. 1 and 2, comprise valve body 1, described valve body 1 leading inside is connected with pressure cap 2, described valve body 1 internal sleeve is equipped with ball seat 3, cut-off steel ball 4 and steel ball push rod 5, described ball seat 3 is connected with pressure cap 2, described cut-off steel ball 4 is placed between ball seat 3 and steel ball push rod 5, pressure regulator valve 7 is set with inside described steel ball push rod 5, pressure spring 6 is socketed with outside described pressure regulator valve 7, described pressure spring 6 connects with steel ball push rod 5, described valve body 1 lateral tail is connected with tail cap 8, described tail cap 8 one sidewall is connected with pressure regulation interface 9, described pressure regulation interface 9 communicates with the pressure regulation chamber 15 of valve body 1, valve body 1 between described cut-off steel ball 4 and pressure regulator valve 7 is provided with exhaust port 14.
In actual use, as Fig. 2 installs, the intake interface of the valve body 1 of the oil well casing pressure control device provided by the present embodiment is connected to sleeve valve 16, and exhaust port 14 connects gas gathering line 17 and enters oil production process, opens oil production process, the pressure P of oil production process
jact on cut-off steel ball 4 and pressure regulator valve 7 simultaneously.Pressure regulation interface 9 is connected with pressure regulating pump, presses pressure regulating pump, make the pressure in pressure regulation chamber 15 equal the pressure P of wish setting
s, then the pressure P in pressure regulation chamber 15
sexcept resisting the pressure P of oil production process
joutward, surplus pressure P
s-P
jcut-off steel ball 4 is passed to by pressure spring 6 by with the form of power.Equally, end steel ball 4 and be also subject to oil production process pressure P
jwith pressure spring 6 elastic force (P
s-P
jequivalent force) acting in conjunction.The equivalent force acting on cut-off steel ball 4 when upstream bleed pressure is greater than the pressure P of oil production process
jwith the elastic force (P of pressure spring 6
s-P
jequivalent force) make a concerted effort time, cut-off steel ball 4 will open, source gas will enter gas gathering line 17 by exhaust port 14, on the contrary end steel ball 4 will close, prevent the fluid of oil production process to be back to source of the gas.
The utility model regulates the opening pressure of cut-off steel ball 4 by pressure regulation interface 9, realizes automatically controlling casing pressure, solves oil well casing pressure and controls the large problem of labor workload, improve oil pumping pump efficiency and system effectiveness, recyclable associated gas simultaneously, eliminates discharge, reduces environment pollution and potential safety hazard.
Embodiment 2:
Present embodiments provide a kind of oil well casing pressure control device, comprise valve body 1, described valve body 1 leading inside is connected with pressure cap 2, described valve body 1 internal sleeve is equipped with ball seat 3, cut-off steel ball 4 and steel ball push rod 5, described ball seat 3 is connected with pressure cap 2, described cut-off steel ball 4 is placed between ball seat 3 and steel ball push rod 5, pressure regulator valve 7 is set with inside described steel ball push rod 5, pressure spring 6 is socketed with outside described pressure regulator valve 7, described pressure spring 6 connects with steel ball push rod 5, described valve body 1 lateral tail is connected with tail cap 8, described tail cap 8 one sidewall is connected with pressure regulation interface 9, described pressure regulation interface 9 communicates with the pressure regulation chamber 15 of valve body 1, valve body 1 between described cut-off steel ball 4 and pressure regulator valve 7 is provided with exhaust port 14, described tail cap 8 afterbody is connected locking cap 12 by lock screw 11 with lock(ing) bolt 13, and the afterbody of described pressure regulator valve 7 is connected with locking cap 12.
In pressure regulation chamber 15, hydraulic pressure is squeezed into by pressure regulation interface 9, when pressure regulation is complete, by lock screw 11, locking cap 12, lock(ing) bolt 13 limits the position of pressure regulator valve 7, to ensure the elastic force of pressure spring 6, controls the opening pressure of cut-off steel ball 4; Then just can the hydraulic pressure of venting pressure regulation chamber 15, the opening pressure of sleeve valve 16 can not change, and opening source of the gas can put into production.
Embodiment 3:
Present embodiments provide a kind of oil well casing pressure control device, comprise valve body 1, described valve body 1 leading inside is connected with pressure cap 2, described valve body 1 internal sleeve is equipped with ball seat 3, cut-off steel ball 4 and steel ball push rod 5, described ball seat 3 is connected with pressure cap 2, described cut-off steel ball 4 is placed between ball seat 3 and steel ball push rod 5, pressure regulator valve 7 is set with inside described steel ball push rod 5, pressure spring 6 is socketed with outside described pressure regulator valve 7, described pressure spring 6 connects with steel ball push rod 5, described valve body 1 lateral tail is connected with tail cap 8, described tail cap 8 one sidewall is connected with pressure regulation interface 9, described pressure regulation interface 9 communicates with the pressure regulation chamber 15 of valve body 1, valve body 1 between described cut-off steel ball 4 and pressure regulator valve 7 is provided with exhaust port 14, the area equation of the pressure-bearing surface of described cut-off steel ball 4 and the sealing surface of pressure regulator valve 7.
Due to the cut-off pressure-bearing surface of steel ball 4 and the sealing surface homalographic of pressure regulator valve 7, so the opening pressure of cut-off steel ball 4 equals the pressure P in pressure regulation chamber 15
s, thus reach the object of regulating sleeve air valve 7 opening pressure directly perceived.
Embodiment 4:
Present embodiments provide a kind of oil well casing pressure control device, comprise valve body 1, described valve body 1 leading inside is connected with pressure cap 2, described valve body 1 internal sleeve is equipped with ball seat 3, cut-off steel ball 4 and steel ball push rod 5, described ball seat 3 is connected with pressure cap 2, described cut-off steel ball 4 is placed between ball seat 3 and steel ball push rod 5, pressure regulator valve 7 is set with inside described steel ball push rod 5, pressure spring 6 is socketed with outside described pressure regulator valve 7, described pressure spring 6 connects with steel ball push rod 5, described valve body 1 lateral tail is connected with tail cap 8, described tail cap 8 one sidewall is connected with pressure regulation interface 9, described pressure regulation interface 9 communicates with the pressure regulation chamber 15 of valve body 1, valve body 1 between described cut-off steel ball 4 and pressure regulator valve 7 is provided with exhaust port 14, described pressure regulation interface 9 is provided with thread protector 10, and thread protector 10 is connected with pressure regulation interface 9 by screw thread.Exchange crimping mouth 9 by thread protector 10 to shield.
In sum, this oil well casing pressure control device that the utility model provides is by being connected to sleeve valve 16 by the intake interface of valve body 1, exhaust port 14 is connected with gas gathering line 17, and the opening pressure of cut-off steel ball 4 is regulated by pressure regulation interface 9, realize automatically controlling casing pressure, solve oil well casing pressure and control the large problem of labor workload, improve oil pumping pump efficiency and system effectiveness, recyclable associated gas simultaneously, eliminates discharge, reduces environment pollution and potential safety hazard.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.
Claims (5)
1. an oil well casing pressure control device, comprise valve body (1), it is characterized in that: described valve body (1) leading inside is connected with pressure cap (2), described valve body (1) internal sleeve is equipped with ball seat (3), cut-off steel ball (4) and steel ball push rod (5), described ball seat (3) is connected with pressure cap (2), described cut-off steel ball (4) is placed between ball seat (3) and steel ball push rod (5), described steel ball push rod (5) inner side is set with pressure regulator valve (7), described pressure regulator valve (7) outside is socketed with pressure spring (6), described pressure spring (6) connects with steel ball push rod (5), described valve body (1) lateral tail is connected with tail cap (8), described tail cap (8) sidewall is connected with pressure regulation interface (9), described pressure regulation interface (9) communicates with the pressure regulation chamber (15) of valve body (1), valve body (1) between described cut-off steel ball (4) and pressure regulator valve (7) is provided with exhaust port (14).
2. oil well casing pressure control device as claimed in claim 1, is characterized in that: described tail cap (8) afterbody is connected locking cap (12) by lock screw (11) with lock(ing) bolt (13).
3. oil well casing pressure control device as claimed in claim 2, is characterized in that: the afterbody of described pressure regulator valve (7) is connected with locking cap (12).
4. oil well casing pressure control device as claimed in claim 1, is characterized in that: described pressure regulation interface (9) is provided with thread protector (10).
5. oil well casing pressure control device as claimed in claim 1, is characterized in that: the area equation of the pressure-bearing surface of described cut-off steel ball (4) and the sealing surface of pressure regulator valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420762360.0U CN204371228U (en) | 2014-12-08 | 2014-12-08 | A kind of oil well casing pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420762360.0U CN204371228U (en) | 2014-12-08 | 2014-12-08 | A kind of oil well casing pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371228U true CN204371228U (en) | 2015-06-03 |
Family
ID=53327457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420762360.0U Expired - Fee Related CN204371228U (en) | 2014-12-08 | 2014-12-08 | A kind of oil well casing pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204371228U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453781A (en) * | 2014-12-08 | 2015-03-25 | 中国石油天然气股份有限公司 | Oil well casing pressure control device |
| CN105971564A (en) * | 2016-06-30 | 2016-09-28 | 李木文 | Cluster type producing well oil-increasing device for realizing pressure regulation of associated natural gas in casings |
-
2014
- 2014-12-08 CN CN201420762360.0U patent/CN204371228U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453781A (en) * | 2014-12-08 | 2015-03-25 | 中国石油天然气股份有限公司 | Oil well casing pressure control device |
| CN105971564A (en) * | 2016-06-30 | 2016-09-28 | 李木文 | Cluster type producing well oil-increasing device for realizing pressure regulation of associated natural gas in casings |
| CN105971564B (en) * | 2016-06-30 | 2018-03-09 | 李木文 | Concentrating type casing of oil production well associated natural gas pressure regulation oil increasing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |