CN207437017U - A kind of well casing gas level pressure air-bleed device - Google Patents
A kind of well casing gas level pressure air-bleed device Download PDFInfo
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- CN207437017U CN207437017U CN201721153115.XU CN201721153115U CN207437017U CN 207437017 U CN207437017 U CN 207437017U CN 201721153115 U CN201721153115 U CN 201721153115U CN 207437017 U CN207437017 U CN 207437017U
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- cock assembly
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Abstract
The utility model is a kind of well casing gas level pressure air-bleed device, with the level pressure releasing casing gas on sleeve valve of oil well.The present apparatus includes ball-and-seat, and hoop one end is connected with wellhead casing pipe valve, the other end and constant pressure valve connect, and the centre bore of hoop is as inlet channel；The other end of constant pressure valve is equipped with control valve and articulation；It is connected between hoop and ball-cock assembly by bleeding off pressure pipe, this, which bleeds off pressure, is equipped with pressure release valve in pipe；Constant pressure valve is connected with ball-cock assembly by air outlet pipe, and ball-cock assembly is connected by oil pipeline with wellhead back pressure valve, is connected in oil pipeline equipped with ball-and-seat and oil jacket communicating valve, ball-cock assembly by low pressure gas supply line with gas equipment, and air outlet valve is housed in the gas relief line；Ball-cock assembly is connected by drain line with oil-stocking equipment；Pressure gauge is respectively arranged in the control room of hoop and constant pressure valve, also filled with inert gas in the control room of constant pressure valve.The utility model has many advantages, such as simple in structure, at low cost.
Description
Technical field
The utility model is related to the casing gas means of deflation of petroleum industry producing well, especially a kind of well casing gas level pressure
Means of deflation, with the level pressure releasing casing gas on sleeve valve of oil well.
Background technology
In oilfield development process, the oil reservoir that associated gas enriches is particularly, crude oil pressure is less than what is dissolved during saturation pressure
Gas is deviate from from crude oil, assembles in casing.In recovery process, since the effect by sheath gas pressure can make hydrodynamic face
Decline, oil well pump is caused to generate gas lock phenomenon, the normal work of deep well pump is seriously affected, damage is brought to oil well production and yield
It loses.If scene is vented, environment is both polluted, there is also serious security risks.Secondly, when casing pressure is higher, if quickly will
Casing pressure reduces, and easily leads to formation pressure fluctuation, then causes sand production in oil, so as to generate many adverse effects to oil well production.
The higher oil well of scene casing pressure at present, mostly design and installation are a set of to draw the casing gas of oil well or associated gas
Enter to produce mains system, reach the set gas level pressure sudden strain of a muscle for the purpose of recycling.This device in use, for various reasons,
Easily there is leakage problem in ball-and-seat, the well liquid of main line is caused to pour in down a chimney, it is necessary to artificial periodically controlled valve getter.Due to above-mentioned dress
The pressure setting mechanism put is made of spring, and pressure cannot be reset again after being installed in production scene, and set
Pressure value also can not be looked at straight and read, and largely affected oil well and normally produced.When casing pressure is excessively high, can occur low pressure
Gas supply line suppresses the phenomenon that quick-fried, can occur pouring in down a chimney phenomenon again when casing pressure is less than back pressure.
The content of the invention
The purpose of this utility model is to provide a kind of well casing gas level pressure air-bleed device, and essence is realized to the casing gas of oil well
Accurate level pressure air-bleed, reduces production cost, ensures the normal operation of production at the defects of overcoming the prior art.
To solve the above-mentioned problems, the technical solution of the utility model is：A kind of well casing gas level pressure air-bleed device bag
Include ball-and-seat, hoop one end is connected with wellhead casing pipe valve, the other end and constant pressure valve connect, the centre bore of hoop as into
Gas passage；The other end of constant pressure valve is equipped with control valve and articulation；It is connected between hoop and ball-cock assembly by bleeding off pressure pipe, this is put
Pressure release valve is housed in pressure pipe；Constant pressure valve is connected with ball-cock assembly by air outlet pipe, and ball-cock assembly passes through oil pipeline and wellhead back pressure valve
Connection is connected equipped with ball-and-seat and oil jacket communicating valve, ball-cock assembly in oil pipeline by low pressure gas supply line with gas equipment, should
Air outlet valve is housed in gas relief line；Ball-cock assembly is connected by drain line with oil-stocking equipment；In the control room of hoop and constant pressure valve
Pressure gauge is respectively arranged with, also filled with inert gas in the control room of constant pressure valve.
The beneficial effects of the utility model are：When needing to carry out level pressure air-bleed to set gas, it is fixed that inert gas is filled into
In the control room of pressure valve, until the pressure gauge on control room reaches required pressure, when set gas reaches predetermined pressure, set pneumatic jack is opened
Piston is flowed out from air outlet pipe.
Casing pressure recycling natural gas can effectively drop in the present apparatus, it is therefore prevented that the waste of non-renewable natural gas resource.It reduces
Natural Gas content into deep well pump crude oil, makes the degree of filling of pump improve, and pump efficiency improves, increase oil well output.It can protect
Card deep well pump normally produces, and can recycle casing gas or be supplied to outlying derrick design stove, while recycling or the gas for using
Cleaning, not oil-containing water.It avoids oil reservoir excitement caused by putting set gas to shake out well of lying, a large amount of operation costs can be saved.Greatly reduce
The time of manual emission set gas, the personnel of being not required to keep marquis, save workload, shorten working time.It reduces harmful substance and is harmful to
Gas contacts directly oil recovery worker, improves the working environment of oil recovery work, ensure that the health of oil recovery work.In addition,
The set gas constant pressure valve of the utility model compared with prior art, also with gas level pressure pressure is visual, valve member is not vulnerable, structure is simple
The advantages that single, at low cost.
Description of the drawings
Fig. 1 is the structure diagram and fundamental diagram of the utility model.
Fig. 2 is the structure and connection diagram of ball-cock assembly embodiment one.
Fig. 3 is the structure and connection diagram of ball-cock assembly embodiment two.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing, not limits the scope of protection of the utility model.It is as described below to be only
The preferred embodiment of the utility model, other use the equivalence changes of the utility model, should all belong to the protection of the utility model
Scope.
Referring to Fig. 1, a kind of well casing gas level pressure air-bleed device includes ball-and-seat 14,1 one end of hoop and wellhead casing pipe
Valve connection, the other end and constant pressure valve 4 connect, and the centre bore of hoop 1 is as inlet channel；The other end of constant pressure valve 4 is equipped with
Control valve 6 and articulation 7；It is connected between hoop 1 and ball-cock assembly 10 by bleeding off pressure pipe 8, this, which bleeds off pressure, is equipped with pressure release valve 9 in pipe 8；
Constant pressure valve 4 is connected with ball-cock assembly 10 by air outlet pipe 13, and ball-cock assembly 10 is connected by oil pipeline 16 with wellhead back pressure valve, in oil
It is connected in pipeline 16 equipped with ball-and-seat 14 and oil jacket communicating valve 15, ball-cock assembly 10 by low pressure gas supply line 12 with gas equipment,
Air outlet valve 11 is housed in the gas relief line 12；Ball-cock assembly 10 is connected by drain line 17 with oil-stocking equipment；Hoop 1 and constant pressure valve
Pressure gauge 2 is respectively arranged in 4 control room 4-2, also filled with inert gas, such as N in the control room 4-2 of constant pressure valve 42, CO2Wait gases.
Ball-cock assembly 10 can prevent fluid from entering in oil pipeline 16 and low pressure gas supply line 12.In order to facilitate being filled in control room 4-2
Inert gas and cost-effective, the inert gas that the utility model uses are nitrogen, can open control valve 6, pass through 7 note of articulation
Enter.
The constant pressure valve 4 is equipped with housing and piston 3, and the outer wall of piston 3 is equipped with sealing ring 5, and the front end of piston 3 is equipped with falls outside
The inner chamfer at angle and housing forward end inner cavity coordinates；Housing forward lumen is discharge chamber 4-1, rear inner cavity room 4-2 in order to control,
Air outlet pipe 13 connects in discharge chamber 4-1 with ball-cock assembly 10.
The drain line 17 is connected with the heavy spherical cavity bottom of ball-cock assembly 10, and fuel outlet valve 18 is also equipped in drain line 17.
Pipe 8, oil pipeline 16, air outlet pipe 13 and the low pressure gas supply line 12 of bleeding off pressure connects with the filling cavity of ball-cock assembly 10
It is logical.
The pressure for the inert gas being filled in the control room 4-2 of the constant pressure valve 4 is less than the gas pressure of casing gas.
There are two types of embodiments for ball-cock assembly 10.
Embodiment one
Referring to Fig. 2, ball-cock assembly 10 includes one 10-1-1 of valve chamber and valve ball one 10-1-2, one 10-1-1 of valve chamber and is equipped with heavy spherical cavity
And filling cavity, the heavy spherical cavity are that hemispherical chamber coordinates with one 10-1-2 of valve ball, the nozzle of draining the oil of drain line 17 is located at hemispherical
The bottom of chamber；Filling cavity is straight cylindrical chamber, connects with bleeding off pressure pipe 8, oil pipeline 16, air outlet pipe 13 and low pressure gas supply line 12
It is logical.
Fuel outlet valve 18 is normally open valve, when needing to set gas level pressure air-bleed, nitrogen is filled with into control room 4-2 and is observed
Pressure gauge 2 on control room 4-2, the pressure value until reaching needs stop inflation, closing control valve 6.Set gas reaches pre- level pressure
Power, open-top piston 3, gas enter followed by inlet channel, discharge chamber 4-1, air outlet pipe 13, ball-cock assembly 10 and ball-and-seat 14
In oil pipeline 16, oil jacket connection valve 15 is in opening state, and pressure release valve 9 and air outlet valve 11 are closed.When set gas does not reach
To predetermined pressure, but when stilling need to deflate to set gas, it is opened manually pressure release valve 9 and air outlet valve 11, closes oil jacket connection valve
15, set gas passes through inlet channel, bleeds off pressure pipe 8 and ball-cock assembly 10 successively, into low pressure gas supply line 12.Mix oil when covering in gas
When liquid is entered in ball-cock assembly 10, floating ball 10-1-2 floats, and fluid is flowed out by the drain line 17 of one 10-1-1 lower ends of valve chamber, is drained the oil
Valve 18 is in normally open, and when fluid stream is net, floating ball 10-1-2 falls the nozzle of draining the oil for blocking bottom again, avoid gas by
This outflow.
Embodiment two
Referring to Fig. 3, it is in integrally wineglass that ball-cock assembly 10, which includes two 10-2-1 of valve chamber and valve ball two 10-2-2, two 10-2-1 of valve chamber,
Shape, equipped with heavy spherical cavity and filling cavity, which is hemispherical chamber, and two 10-2-2 of valve ball sinks at the bottom of the hemispherical chamber
Portion, the nozzle of draining the oil of drain line 17 are located at the bottom of hemispherical chamber；Filling cavity is up-small and down-big taper chamber, with bleeding off pressure pipe
8th, oil pipeline 16, air outlet pipe 13 are connected with low pressure gas supply line 12.
Two 10-2-1 of valve ball is the spherical cavity bottom of hollow hemisphere, hollow hemisphere equipped with counterweight 10-2-3, hollow hemisphere
Planar diameter be consistent with filling cavity top diameter.
Described to bleed off pressure pipe 8 and air outlet pipe 13 is connected with the top of filling cavity, oil pipeline 16 and low pressure gas supply line 12 are with filling
Note the top connection of chamber.
Fuel outlet valve 18 is normally open valve, when there is a situation where that substantial amounts of fluid is entered with set gas in ball-cock assembly 10, counterweight
10-2-3 can ensure that two 10-2-2 of valve ball will not turn on one's side when floating, when two 10-2-2 of valve ball is in two 10-2-1 bottoms of valve chamber,
The nozzle of draining the oil that hemisphere face closure two 10-2-1 of valve chamber of two 10-2-2 of valve ball is connected with drain line 17, two 10-2-2 of valve ball are floated to
During two 10-2-1 top surfaces of valve chamber, plane closure two 10-2-1 of valve chamber and oil pipeline 16 and the low pressure gas supply line of two 10-2-2 of valve ball
12 outlet avoids fluid from entering in oil pipeline 16 and low pressure gas supply line 12.
Claims (9)
1. a kind of well casing gas level pressure air-bleed device, including ball-and-seat, it is characterized in that, hoop one end and wellhead casing pipe valve
Connection, the other end and constant pressure valve connect, and the centre bore of hoop is as inlet channel；The other end of constant pressure valve equipped with control valve and
Articulation；It is connected between hoop and ball-cock assembly by bleeding off pressure pipe, this, which bleeds off pressure, is equipped with pressure release valve in pipe；Constant pressure valve leads to ball-cock assembly
Air outlet pipe connection is crossed, ball-cock assembly is connected by oil pipeline with wellhead back pressure valve, is connected in oil pipeline equipped with ball-and-seat and oil jacket
Port valve, ball-cock assembly are connected by low pressure gas supply line with gas equipment, and air outlet valve is housed in the gas relief line；Ball-cock assembly is by putting
Oil pipe is connected with oil-stocking equipment；Pressure gauge, constant pressure valve are respectively arranged in the control room of hoop and constant pressure valve（4）Control room in also
Filled with inert gas.
2. a kind of well casing gas level pressure air-bleed device as described in claim 1, it is characterized in that, the constant pressure valve is equipped with housing
And piston, the outer wall of piston are equipped with sealing ring, the front end of piston is equipped with outer chamfer and the inner chamfer of housing forward end inner cavity coordinates；Shell
Body forward lumen is discharge chamber, room, air outlet pipe connect in discharge chamber with ball-cock assembly in order to control for rear inner cavity.
3. a kind of well casing gas level pressure air-bleed device as claimed in claim 2, it is characterized in that, the drain line and ball-cock assembly
Heavy spherical cavity bottom connection, fuel outlet valve is also equipped in drain line.
4. a kind of well casing gas level pressure air-bleed device as claimed in claim 3, it is characterized in that, it is described bleed off pressure pipe, oil pipeline,
Air outlet pipe and low pressure gas supply line are connected with the filling cavity of ball-cock assembly.
5. a kind of well casing gas level pressure air-bleed device as claimed in claim 1 or 2, it is characterized in that, the control of the constant pressure valve
The pressure for the inert gas being filled in room processed is less than the gas pressure of casing gas.
6. a kind of well casing gas level pressure air-bleed device as described in claim 1 or 4, it is characterized in that, the ball-cock assembly includes
Valve chamber one and valve ball one, valve chamber one are equipped with heavy spherical cavity and filling cavity, which is that hemispherical chamber coordinates with valve ball one, is drained the oil
The nozzle of draining the oil of pipe is located at the bottom of hemispherical chamber；Filling cavity be straight cylindrical chamber, with bleed off pressure pipe, oil pipeline, air outlet pipe and
Low pressure gas supply line connects.
7. a kind of well casing gas level pressure air-bleed device as described in claim 1 or 4, it is characterized in that, the ball-cock assembly includes
Valve chamber two and valve ball two, valve chamber two it is whole in goblet shape, equipped with heavy spherical cavity and filling cavity, which is hemispherical chamber, valve
Ball two sinks in the bottom of the hemispherical chamber, and the nozzle of draining the oil of drain line is located at the bottom of hemispherical chamber；On filling cavity is
Small lower big taper chamber is connected with bleeding off pressure pipe, oil pipeline, air outlet pipe and low pressure gas supply line.
8. a kind of well casing gas level pressure air-bleed device as claimed in claim 7, it is characterized in that, the valve ball is second is that hollow half
Ball, the spherical cavity bottom of hollow hemisphere are equipped with counterweight, and the planar diameter of hollow hemisphere is consistent with filling cavity top diameter.
9. a kind of well casing gas level pressure air-bleed device as claimed in claim 8, it is characterized in that, it is described to bleed off pressure pipe and air outlet pipe
It is connected with the top of filling cavity, oil pipeline and low pressure gas supply line are connected with the top of filling cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153115.XU CN207437017U (en) | 2017-09-11 | 2017-09-11 | A kind of well casing gas level pressure air-bleed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721153115.XU CN207437017U (en) | 2017-09-11 | 2017-09-11 | A kind of well casing gas level pressure air-bleed device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437017U true CN207437017U (en) | 2018-06-01 |
Family
ID=62302322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721153115.XU Expired - Fee Related CN207437017U (en) | 2017-09-11 | 2017-09-11 | A kind of well casing gas level pressure air-bleed device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207437017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508322A (en) * | 2020-11-17 | 2022-05-17 | 中国石油天然气股份有限公司 | Pressure regulating gas collecting device for oil well and oil production wellhead structure |
-
2017
- 2017-09-11 CN CN201721153115.XU patent/CN207437017U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508322A (en) * | 2020-11-17 | 2022-05-17 | 中国石油天然气股份有限公司 | Pressure regulating gas collecting device for oil well and oil production wellhead structure |
| CN114508322B (en) * | 2020-11-17 | 2024-03-01 | 中国石油天然气股份有限公司 | Pressure-regulating and gas-collecting device for oil well and wellhead structure for oil extraction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20180911 |