CN202381057U - Simple casing gas recovery device - Google Patents
Simple casing gas recovery device Download PDFInfo
- Publication number
- CN202381057U CN202381057U CN2011204782743U CN201120478274U CN202381057U CN 202381057 U CN202381057 U CN 202381057U CN 2011204782743 U CN2011204782743 U CN 2011204782743U CN 201120478274 U CN201120478274 U CN 201120478274U CN 202381057 U CN202381057 U CN 202381057U
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- China
- Prior art keywords
- oil
- casing gas
- gas
- casing
- well
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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
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Abstract
The utility model discloses a simple casing gas recovery device, and aims to solve the problem that the casing gas of an oil well cannot be recovered. The device is a special valve and is arranged between an oil pipe and a casing of the oil well. The casing gas is discharged into the oil pipe during the down stroke of an oil pumping unit, and crude oil and the casing gas are subjected to the oil collection process together during the up stroke of the oil pumping unit. The device can solve the problem that the casing gas of the oil well cannot be recovered because a constant pressure valve is easily frozen and blocked in winter; the back pressure of the oil well can be reduced, and the amount of the recovered casing gas is larger than that of the casing gas recovered by the constant pressure valve; the constant pressure of the casing gas can be adjusted, so that the requirement of an oil extraction process can be well met; and the device is easy to operate and maintain and convenient to construct and install, and hot work is not needed.
Description
Technical field
The utility model relates to a kind of simple and easy casing gas recovering device, belongs to the oil-gas field development technical field.
Background technology
Long celebrating oil field part sleeve pipe gas " is ignited the torch " in the well site on the spot and is burnt, and causes environment pollution, energy waste.At present, the oil well that the sleeve pipe atmospheric pressure is high utilizes constant pressure valve to connect the oil jacket annular space and advances oil-gas gathering and transportation.In recent years, also carry out field trials such as inflating pump, synchronous revolving compressor, fuel gas generation, but all do not formed series of products.Constant pressure valve recovery of casing gas is between the outlet of oil pumper well head oil pipe flow line and annular space, a constant pressure valve to be installed, and casing pressure is during greater than the oil-collecting back pressure, and constant pressure valve is opened, and sleeve pipe gas gets into oil pipeline, together carries in company with crude oil.
But winter, constant pressure valve froze stifledly easily, can't reclaim well casing gas, and level pressure can not be regulated.When Oil Well Back Pressure is high, reclaims tolerance and gradually reduce, the deep-well pump efficiency reduces, is prone to form gas lock.Utilize constant pressure valve most of well site in winter sleeve pipe gas to reclaim.
Summary of the invention
The purpose of the utility model is to provide a kind of simple and easy casing gas recovering device, and it possesses antifreeze function of blocking up, collecting automatically sleeve pipe gas and adjustment sleeve pipe gas level pressure value.
The concrete technology contents of the utility model is following:
The upper/lower terminal of oil connection connects oil pipe import and oil pipe outlet respectively; Be provided with sleeve pipe gas import at the oil connection middle part perpendicular to the oil pipe direction; Sleeve pipe gas import inboard is provided with tapered spool and compression spring, and the compression spring connects the adjusting bolt that is positioned at the oil connection outside.Be provided with non-return valve core and spring in the oil connection.
During the oil pumper down stroke, crude oil refluxes, and non-return valve core is closed, and blocks outside back pressure, forms pressure reduction space in the oil pipe.Sleeve pipe air pressure is higher than oil pressure, and taper valve core is opened, and sleeve pipe gas is entered oil pipe; During the oil pumper up stroke, oil pressure is higher than casing pressure, and taper valve core is closed, and flap valve is opened, and crude oil gets into the oil-collecting flow process with sleeve pipe gas.Because crude stream crosses sleeve pipe gas inlet tube outer wall, crude stream is out-of-date establishes heater heating taper valve core and spring, thereby freezes when avoiding winter sleeve pipe gas air inlet stifled.
The simple and easy casing gas recovering device of the utility model can solve the winter constant pressure valve and freeze stifledly easily, so that can't reclaim the problem of well casing gas; Can reduce Oil Well Back Pressure, the sleeve pipe tolerance of recovery is higher than constant pressure valve; Sleeve pipe gas level pressure is adjustable, can satisfy the DP technology requirement preferably; Simple to operate, easy care, construction and installation are easy, need not fire operation.
Description of drawings
Fig. 1 is simple and easy casing gas recovering device structural representation.
Fig. 2 is simple and easy casing gas recovering device work sketch map.
The specific embodiment
Embodiment:
With reference to Fig. 1 and 2 the embodiment of the utility model is further specified:
This is a kind of special valve, is installed between the oil pipe and sleeve pipe of oil well, and device has the import of a sleeve pipe gas, a crude oil import, crude exports.With oil connection 6 upper/lower terminals be threaded respectively oil pipe import 1 and oil pipe outlet 9; Oil connection 6 middle parts along perpendicular to oil pipe direction mounting sleeve gas import 2; Tapered spool 3 and compression spring 7 are set in sleeve pipe gas import 2 inboards, and compression spring 7 is regulated by being positioned at oil connection 6 outside adjusting bolts 8.Non-return valve core 4 and spring 5 are set in oil connection 6.
On-the-spot can the standpipe pipe nipple of well head crude oil pipeline being removed installed simple and easy casing gas recovering device in the middle of standpipe, oil pipe import and export 1 and 9 is screwed connection, can directly be connected with the well head pipe fitting; Sleeve pipe gas import 2 is furnished with the flexible pipe 10 of special-purpose band movable joint, on one side tipping sleeve pipe gas import 2, the one edge joint well casing gas reserved opening 11 of putting.
Claims (1)
1. simple and easy casing gas recovering device; The upper/lower terminal that it is characterized in that oil connection (6) connects oil pipe import (1) and oil pipe outlet (9) respectively; Be provided with sleeve pipe gas import (2) at oil connection (6) middle part perpendicular to the oil pipe direction; Sleeve pipe gas import (2) inboard is provided with tapered spool (3) and compression spring (7), and compression spring (7) connects the adjusting bolt (8) that is positioned at oil connection (6) outside; Be provided with non-return valve core (4) and spring (5) in the oil connection (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204782743U CN202381057U (en) | 2011-11-25 | 2011-11-25 | Simple casing gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204782743U CN202381057U (en) | 2011-11-25 | 2011-11-25 | Simple casing gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381057U true CN202381057U (en) | 2012-08-15 |
Family
ID=46629570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204782743U Expired - Fee Related CN202381057U (en) | 2011-11-25 | 2011-11-25 | Simple casing gas recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513087A (en) * | 2019-07-18 | 2019-11-29 | 中国石油天然气股份有限公司 | A kind of well head pressure difference companion gas recovery system |
| CN114754294A (en) * | 2022-05-17 | 2022-07-15 | 广东管辅能源科技有限公司 | Oil product transfer storage oil gas recovery monitoring system |
-
2011
- 2011-11-25 CN CN2011204782743U patent/CN202381057U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513087A (en) * | 2019-07-18 | 2019-11-29 | 中国石油天然气股份有限公司 | A kind of well head pressure difference companion gas recovery system |
| CN114754294A (en) * | 2022-05-17 | 2022-07-15 | 广东管辅能源科技有限公司 | Oil product transfer storage oil gas recovery monitoring system |
| CN114754294B (en) * | 2022-05-17 | 2023-05-26 | 广东管辅能源科技有限公司 | Oil transfer storage oil gas recovery monitoring system |
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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: 20120815 Termination date: 20201125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |