CN2656620Y - Oil well casing gas recovery valve - Google Patents
Oil well casing gas recovery valve Download PDFInfo
- Publication number
- CN2656620Y CN2656620Y CN 200320102574 CN200320102574U CN2656620Y CN 2656620 Y CN2656620 Y CN 2656620Y CN 200320102574 CN200320102574 CN 200320102574 CN 200320102574 U CN200320102574 U CN 200320102574U CN 2656620 Y CN2656620 Y CN 2656620Y
- Authority
- CN
- China
- Prior art keywords
- valve
- air inlet
- well casing
- gas recovery
- valve body
- 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.)
- Expired - Lifetime
Links
- 238000011084 recovery Methods 0.000 title claims abstract description 14
- 239000003129 oil well Substances 0.000 title abstract description 3
- 239000007789 gas Substances 0.000 abstract description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003345 natural gas Substances 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 1
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- Safety Valves (AREA)
- Lift Valve (AREA)
Abstract
An oil well casing gas recovery valve is characterized in that: the side wall is provided with a valve body 2 of an air inlet pipe 6 and an exhaust pipe 1, an air inlet channel and an exhaust channel are processed inside the valve body, a check valve 4 is arranged at the opening of the exhaust channel, a stop pin 3 penetrates through the check valve 4, and a valve cover 5 is arranged at the lower part of the valve body 2. The utility model discloses simple structure, small, low price, be convenient for installation, dismantlement and keep warm winter, the action is sensitive, can furthest retrieve the natural gas of sleeve pipe companion in using, can prevent reliably simultaneously that liquid from flowing back to the sleeve pipe in the oil line.
Description
Technical field: the utility model relates to the device that a kind of oil field is used for oil-gas gathering and transportation, especially for the well casing gas recovery valve on the well head.
Technical background: before the utility model, the oil field is the natural gas of recovered oil casing association, the common baffle-type ball-and-seat of normal employing is installed between the casing head and flow line of well head, because this ball-and-seat volume is bigger, and it is lower to open and close action sensitivity, make troubles not only for on-the-spot the installation, also influenced cover gas and reclaimed actual effect.
Summary of the invention: the purpose of this utility model is to recycle for oil field cover gas a kind of well casing gas recovery valve is provided, have volume little, be convenient to install, working sensitivity height, less pressure reduction can open and close, recovery of casing association natural gas can reliably prevent that liquid flows backwards to sleeve pipe in the flow line simultaneously to greatest extent.
The purpose of this utility model realizes by following measure: a kind of well casing gas recovery valve, comprise backing pin, ball-and-seat, valve bonnet etc., it is characterized in that sidewall is equipped with a cylinder shape valve of air inlet pipe and stack, inner corresponding with it air inlet duct and the vent that is processed with at its lower ending opening, and the place is equipped with ball-and-seat at the steam vent road junction, install one grade of pin on the vent above it, valve body lower portion is also installed a valve bonnet.
The utility model is simple in structure, volume is little, price is low, is convenient to installation, dismounting and Winter protection, and the natural gas of recovery of casing association to greatest extent in being active in one's movements, using can prevent that liquid flows backwards to sleeve pipe in the flow line simultaneously reliably.
Description of drawings: Fig. 1 is a well casing gas recovery valve structural representation.
The well casing gas recovery valve is made up of valve body 2, backing pin 3, ball-and-seat 4, valve bonnet 6 etc., the cylinder shape valve 2 of air inlet pipe 6 and stack 1 is installed on the sidewall, inner corresponding with it air inlet duct and the vent that is processed with at its lower ending opening, and the place is equipped with ball-and-seat 4 at the steam vent road junction, install one grade of pin 3 on the vent above it, valve body 2 bottoms also are equipped with valve bonnet 5.
The specific embodiment: the using method and the operating principle of well casing gas recovery valve are: the well casing gas recovery valve is loaded on the well head place, and its air inlet pipe 6, stack 1 are connected with sleeve pipe, flow line respectively.When the association gas pressure during oil well production in the sleeve pipe is higher than flow line pressure, ball-and-seat 4 can be opened, gas is then by the air inlet duct on air inlet pipe 6, the valve body 2 in the sleeve pipe, and vent on ball-and-seat 4, valve body 2 and stack 1 enter flow line and reclaim; When the association gas pressure was lower than flow line pressure in the sleeve pipe, ball-and-seat 4 can be closed, and sleeve pipe then stops exhaust in flow line, and owing to the effect of ball-and-seat 4, the liquid in the flow line can not flow backwards in sleeve pipe yet simultaneously.Because ball-and-seat 4 has higher sensitivity, very little pressure reduction just can move, therefore the association natural gas in the recovery of casing to greatest extent.
Claims (1)
1, a kind of well casing gas recovery valve, comprise backing pin, ball-and-seat, valve bonnet etc., it is characterized in that: sidewall is equipped with a cylinder shape valve of air inlet pipe and stack, inner corresponding with it air inlet duct and the vent that is processed with at its lower ending opening, and the place is equipped with ball-and-seat at the steam vent road junction, install one grade of pin on the vent above it, valve body lower portion is also installed a valve bonnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320102574 CN2656620Y (en) | 2003-11-04 | 2003-11-04 | Oil well casing gas recovery valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320102574 CN2656620Y (en) | 2003-11-04 | 2003-11-04 | Oil well casing gas recovery valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2656620Y true CN2656620Y (en) | 2004-11-17 |
Family
ID=34340149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320102574 Expired - Lifetime CN2656620Y (en) | 2003-11-04 | 2003-11-04 | Oil well casing gas recovery valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2656620Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358547A (en) * | 2014-11-12 | 2015-02-18 | 中国石油天然气股份有限公司 | Gas-liquid separation type sleeve gas recovery device |
-
2003
- 2003-11-04 CN CN 200320102574 patent/CN2656620Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358547A (en) * | 2014-11-12 | 2015-02-18 | 中国石油天然气股份有限公司 | Gas-liquid separation type sleeve gas recovery device |
| CN104358547B (en) * | 2014-11-12 | 2017-06-13 | 中国石油天然气股份有限公司 | Gas-liquid separation type sleeve gas recovery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131104 Granted publication date: 20041117 |