CN203584375U - Liquid discharge system - Google Patents
Liquid discharge system Download PDFInfo
- Publication number
- CN203584375U CN203584375U CN201320658945.3U CN201320658945U CN203584375U CN 203584375 U CN203584375 U CN 203584375U CN 201320658945 U CN201320658945 U CN 201320658945U CN 203584375 U CN203584375 U CN 203584375U
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- Prior art keywords
- tube
- liquid discharge
- oil
- nitrogen
- discharge system
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- Expired - Fee Related
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Abstract
The utility model relates to a liquid discharge system. The liquid discharge system comprises a production oil tube and a continuous oil tube, wherein the production oil tube wraps the continuous oil tube, the top of the production oil tube is connected with a valve and an oil reservoir sequentially, a liquid discharge tube is arranged on the oil reservoir, a nitrogen recovery device is arranged in the oil reservoir, and the top of the continuous tube is connected with an air injection pump and a nitrogen tank. The liquid discharge system is simple in connecting structure, good in liquid discharge effect and high in practicability.
Description
Technical field
The utility model relates to a kind of oil well oil-pumping system.
Background technology
Low-permeability oil gas field has geological condition complexity, exploitation difficulty is large, production capacity is low and the feature such as deficiency in economic performance.The petroleum reserves that Russia is difficult to exploitation accounts for the more than 40% of residual recoverable reserves, and these oil ore deposits are low-permeability oil gas field mostly.In recent years, China's Low Permeability Oil/gas Productivity Construction scale accounts for the more than 70% of total amount, become the main battle ground that oil and gas development is built, only 2008, hyposmosis crude output just accounts for 37.6% of total output, and hyposmosis gas production accounts for 42.1% of total output, after low permeability pay water breakthrough, adopt liquid and productivity index sharply declines, oilfield stable production is caused to sharply impact.For low-permeability oil gas well, because its reservoir pressure is low, most of well can not rely on stratum energy to realize blowing after pressing, and discharges fracturing fluid, must adopt low-cost, easy-operating fluid-discharge method.
Summary of the invention
In order to solve the oil extraction problem in low-permeability oil gas field, the utility model proposes a kind of system of utilizing the discharge opeing of note nitrogen.
A kind of drainage system described in the utility model, comprise production tube and coiled tubing, production tube is wrapped in the outside of coiled tubing, the top of production tube connects valve and oil storage pool successively, oil storage pool is provided with discharging tube, in oil storage pool, be provided with nitrogen gas recovering apparatus, the top of coiled tubing connects gas injection pump and nitrogen pot.
A kind of drainage system described in the utility model, syndeton is simple, and discharge opeing is effective, practical.
Accompanying drawing explanation
Fig. 1 is syndeton schematic diagram of the present utility model.
1-production tube in figure; 2-coiled tubing; 3-oil storage pool; 4-nitrogen pot; 5-gas injection pump.
The specific embodiment
A kind of drainage system described in the utility model, comprise production tube 1 and coiled tubing 2, production tube 1 is wrapped in the outside of coiled tubing 2, the top of production tube 1 connects valve and oil storage pool 3 successively, oil storage pool 3 is provided with discharging tube, in oil storage pool 3, be provided with nitrogen gas recovering apparatus, the top of coiled tubing 2 connects gas injection pump and nitrogen pot 4.During work, by coiled tubing 2 times in well below hydrostatic level, open gas injection pump 5, from nitrogen pot 4, to liquid level nitrogen injection, nitrogen is annular space rising production tube 1 in well, and drive liquid overcomes friction pressure and liquid column hydrostatic pressure is climbed to well head, enter oil storage pool 3, through the nitrogen gas recovering apparatus in oil storage pool 3, by nitrogen and fluid separation applications, nitrogen discharges from mixture, and oil well discharge opeing completes.
Claims (1)
1. a drainage system, it is characterized in that: comprise production tube (1) and coiled tubing (2), production tube (1) is wrapped in the outside of coiled tubing (2), the top of production tube (1) connects valve and oil storage pool (3) successively, oil storage pool (3) is provided with discharging tube, oil storage pool is provided with nitrogen gas recovering apparatus in (3), and the top of coiled tubing (2) connects gas injection pump (5) and nitrogen pot (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320658945.3U CN203584375U (en) | 2013-10-24 | 2013-10-24 | Liquid discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320658945.3U CN203584375U (en) | 2013-10-24 | 2013-10-24 | Liquid discharge system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203584375U true CN203584375U (en) | 2014-05-07 |
Family
ID=50582311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320658945.3U Expired - Fee Related CN203584375U (en) | 2013-10-24 | 2013-10-24 | Liquid discharge system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203584375U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042774A (en) * | 2019-12-25 | 2020-04-21 | 山西晋城无烟煤矿业集团有限责任公司 | Method for switching whole cylinder pump and gas lift extraction mode without sleeve pressure unloading |
-
2013
- 2013-10-24 CN CN201320658945.3U patent/CN203584375U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042774A (en) * | 2019-12-25 | 2020-04-21 | 山西晋城无烟煤矿业集团有限责任公司 | Method for switching whole cylinder pump and gas lift extraction mode without sleeve pressure unloading |
| CN111042774B (en) * | 2019-12-25 | 2021-08-20 | 山西晋城无烟煤矿业集团有限责任公司 | Method for switching whole cylinder pump and gas lift extraction mode without sleeve pressure unloading |
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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: 20140507 Termination date: 20141024 |
|
| EXPY | Termination of patent right or utility model |