CN102913188A - Underground oil and gas nozzle - Google Patents
Underground oil and gas nozzle Download PDFInfo
- Publication number
- CN102913188A CN102913188A CN 201210422346 CN201210422346A CN102913188A CN 102913188 A CN102913188 A CN 102913188A CN 201210422346 CN201210422346 CN 201210422346 CN 201210422346 A CN201210422346 A CN 201210422346A CN 102913188 A CN102913188 A CN 102913188A
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- Prior art keywords
- oil
- gas
- gas well
- nozzle
- underground oil
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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.)
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Abstract
The invention provides an underground oil and gas nozzle and relates to a high-pressure oil and gas well throttling device working under the ground. The underground oil and gas nozzle comprises a hollow cylindrical main body; an oil nozzle is formed at one end of the main body and is a hollow cone; and lock blocks are also obliquely arranged on the main body. The underground oil and gas nozzle has the benefits that the production pressure is reduced, the wellhead temperature is improved, the generation conditions of hydrates are damaged, and the hydrates can be effectively prevented; and in addition, the minimum discharge rate of a wellhead of a gas well is reduced, and the liquid-carrying capacity of the gas well self is enhanced, so that the production of the gas well with lower liquid yield tends to be more stable.
Description
Technical field
The present invention relates to a kind of high-pressure oil-gas well throttling arrangement in underground work.
Background technology
High-pressure oil-gas well all will be installed the throttling devices such as oil gas mouth or needle valve, is used for controlling Oil/gas Well output and well head pressure.When duct that gas dwindles suddenly by these flow areas, because local resistance is larger, will produces temperature and pressure and reduce, the phenomenon of specific volume increase.When temperature was reduced to the dewpoint temperature of natural gas, gas will freeze the formation hydrate and stop up well head, thereby caused Oil/gas Well to stop production.In the gas field development process, all in various degree appearance gas well brings difficulty for the gas well production management because producing the situation of hydrate closing well.Mainly contain at present 2 kinds of solutions: the one, the temperature of natural gas before the raising throttling; The 2nd, in natural gas, add inhibitor.But these two kinds of methods all have limitation, are unfavorable for applying.
Summary of the invention
The present invention aims to provide a kind of downhole oil valve that can prevent that hydrate from generating.
A kind of downhole oil valve of the present invention comprises the body of hollow tube-shape, and an end of body is provided with oil nozzle, and oil nozzle is the cone of hollow, and also is provided with lock dog on the body, and lock dog is arranged on the body obliquely.
Preferably, lock dog links to each other with body by spring.
More preferably, the angle that forms between lock dog and the body is α, 0 °＜α＜90 °.
Further preferably, 15 °＜α＜30 °.
More preferably, α is 15 °.
Perhaps more preferably, also be provided with the end cap that is complementary with its shape on the oil nozzle.
Perhaps preferably, this external surface is provided with the external screw thread that is complementary with the landing nipple screw thread.
The present invention has reduced production pressure, has improved wellhead temperature, has destroyed the formation condition of hydrate, can effectively prevent and treat hydrate.The present invention has reduced the minimum discharge flow rate of gas well mouth in addition, has strengthened gas well self fluid-carrying capability, makes the lower gas well production of production fluid amount more steady.
Description of drawings
Fig. 1 is the structural representation of embodiment one.
The specific embodiment
Embodiment one.
A kind of downhole oil valve of the present invention comprises the body 1 of hollow tube-shape, and an end of body 1 is provided with oil nozzle 4, and oil nozzle 4 is the cone of hollow, also is provided with the end cap 5 that is complementary with its shape on the oil nozzle 4.
Also be provided with lock dog 2 on the body 1, lock dog 2 is arranged on the body 1 obliquely by spring.The angle that forms between lock dog 2 and the body 1 is α, and α is 15 °.
This outer body 1 external surface is provided with the external screw thread 3 that is complementary with the landing nipple screw thread.
During use, the present invention is dropped in the landing nipple, with arriving projected depth under the completion tubular column, then opening well and making production gets final product with this landing nipple.When according to Oil/gas Well condition of production needs transposing subsurface choke 4 specification, with supporting fishing tool it is pulled out first, then the present invention is dropped in the landing nipple by the wire Launching and Bailing car, lock dog 2 opens under the elastic force effect of spring, withstand on the landing nipple, prevent from moving in the present invention, external screw thread 3 and landing nipple sealing, can realize reaching the purpose of prevention of water compound into lower throttling production.
Because the present invention adopts the down-hole mode, greatly reduce the above pressure of downhole oil valve, improve the wellhead temperature of extraction natural gas, therefore destroyed the formation condition of hydrate, reached the purpose that prevents hydrate.
Claims (7)
1. downhole oil valve, it is characterized in that comprising the body (1) of hollow tube-shape, an end of body (1) is provided with oil nozzle (4), and oil nozzle (4) is the cone of hollow, and also be provided with lock dog (2) on the body (1), lock dog (2) is arranged on the body (1) obliquely.
2. downhole oil valve as claimed in claim 1 is characterized in that lock dog (2) links to each other with body (1) by spring.
3. downhole oil valve as claimed in claim 1 or 2 is characterized in that the angle that forms between lock dog (2) and the body (1) is α, 0 °＜α＜90 °.
4. downhole oil valve as claimed in claim 3 is characterized in that 15 °＜α＜30 °.
5. downhole oil valve as claimed in claim 4 is characterized in that α is 15 °.
6. downhole oil valve as claimed in claim 1 or 2 is characterized in that also being provided with on the oil nozzle (4) end cap (5) that is complementary with its shape.
7. downhole oil valve as claimed in claim 1 or 2 is characterized in that body (1) external surface is provided with the external screw thread (3) that is complementary with the landing nipple screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210422346 CN102913188A (en) | 2012-10-30 | 2012-10-30 | Underground oil and gas nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210422346 CN102913188A (en) | 2012-10-30 | 2012-10-30 | Underground oil and gas nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102913188A true CN102913188A (en) | 2013-02-06 |
Family
ID=47611731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210422346 Pending CN102913188A (en) | 2012-10-30 | 2012-10-30 | Underground oil and gas nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102913188A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343416A (en) * | 2014-10-24 | 2015-02-11 | 中国石油大学(华东) | Deep water gas well test system and test method |
| CN109477370A (en) * | 2017-03-27 | 2019-03-15 | 沙特阿拉伯石油公司 | Method and apparatus for stablizing the gas/liquid flowing in vertical pipeline |
-
2012
- 2012-10-30 CN CN 201210422346 patent/CN102913188A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343416A (en) * | 2014-10-24 | 2015-02-11 | 中国石油大学(华东) | Deep water gas well test system and test method |
| CN109477370A (en) * | 2017-03-27 | 2019-03-15 | 沙特阿拉伯石油公司 | Method and apparatus for stablizing the gas/liquid flowing in vertical pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130206 |