CN201068733Y - Aerated drilling safety gas injection device - Google Patents
Aerated drilling safety gas injection device Download PDFInfo
- Publication number
- CN201068733Y CN201068733Y CNU2007200131287U CN200720013128U CN201068733Y CN 201068733 Y CN201068733 Y CN 201068733Y CN U2007200131287 U CNU2007200131287 U CN U2007200131287U CN 200720013128 U CN200720013128 U CN 200720013128U CN 201068733 Y CN201068733 Y CN 201068733Y
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- China
- Prior art keywords
- gas injection
- high pressure
- safety
- injection device
- valve
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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
A charging well drilling safety gas injection device used for underbalance well drilling consists of a high pressure union female button, flanges, a safety valve, a piezometer tube, a lathe dog, a brake valve, a high pressure union male button, a tee joint T and an obturating ring. The high pressure union female button is connected with the safety valve through the flanges, the obturating ring is added among the flanges, the safety valve is connected with the tee joint T through the flanges, the lower part of the body of the tee joint T is provided with a small hole to install the piezometer tube, the brake valve is connected with the tee joint T through the lathe dog, and the high pressure union male button is connected with the brake valve through the lathe dog. The utility model solves the problems existing in the prior art that the security is not high, the pressure cannot be discharged in time, and the manual operation is easy to meet danger. The safety gas injection device can be widely used in the underbalance well drilling work.
Description
Technical field:
The utility model relates to a kind of air-filling well-drilling safety gas injection device that a kind of under balance pressure drilling is used.
Background technology:
Along with polytype petroleum resources constantly is exploited, the exploration and development of low pressure and low permeability oil gas field more and more is subject to people's attention, so under-balanced drilling technology has obtained unprecedented development.The charge air conditioning drilling well is a kind of mode of most economical practicality in the under balance pressure drilling, and it is that gas is filled in the mud, reduces the equal yield density of mud, reaches the purpose that reduces bottom pressure with this.Newly Yan Zhi safe gas injection device is because the requirement difference of aeration quantity, can select to connect a cover or two cover gas injection car groups according to situation at that time, from piezometer tube, can accurately read the instantaneous numerical value of gas injection pressure, simultaneously when gas injection pressure surpasses design safety pressure, safe gas injection device automatically unloading has guaranteed that injection-gas manifold is in safe pressure limit.It is not high that it has overcome the safety that conventional gas injection device exists, and the timely shortcoming of automatically unloading is if manually-operated is prone to Personal Risk's problem.
The utility model content:
The purpose of this utility model provides a kind of air-filling well-drilling safety gas injection device, this device solves the safety that exists in the prior art not high, the timely shortcoming of automatically unloading is if manually-operated is prone to Personal Risk's problem.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of air-filling well-drilling safety gas injection device is made up of high pressure union box, flange, safety valve, piezometer tube, clip, gate valve, high pressure union pin thread, threeway, sealing ring: high pressure union box is connected by flange with safety valve, add sealing ring between the flange, be connected by flange between safety valve and the threeway, threeway body bottom is provided with aperture piezometer tube is installed, gate valve and threeway are by clamp connection, and high pressure union pin thread and gate valve are by clamp connection.The implementation process of this device: air injection pipe firmly is connected with high pressure union box.If a gas injection car group is arranged, the gas injection flexible pipe of gas injection car group firmly is connected with one of them union pin thread, open continuous end brake valve, other end brake valve cuts out.If two gas injection car groups, the gas injection flexible pipe with gas injection car group firmly is connected with the union pin thread respectively, and two gate valves are opened simultaneously.The safety guard that opens the safety-valve checks whether piezometer tube is intact.Determining to open gas injection car group under the situation that gate valve is being opened, whether the pressure that continues 5 minutes observation piezometer tube is identical with the pressure of gas injection car group, difference then will be stopped, and checks that manifold connects sealing, when treating that piezometer tube pressure equates with the pressure of gas injection car group, can carry out the gas injection operation.
The beneficial effects of the utility model are, and are simple in structure, easy to operate, this device does not have safety valve and pressure tap energy automatically unloading, realizes safe gas injection under the high-pressure situations, and can in time read pressure data accurately, reduce manually-operated danger, improve the safety of high-pressure gas injection.
Description of drawings:
Accompanying drawing is the utility model overall structure schematic diagram.
Among the figure 1, high pressure union box, 2, flange, 3, safety valve, 4, piezometer tube, 5, clip, 6, gate valve, 7, high pressure union pin thread, 8, threeway, 9, sealing ring.
The specific embodiment:
In the accompanying drawings, a kind of air-filling well-drilling safety gas injection device is made up of high pressure union box 1, flange 2, safety valve 3, piezometer tube 4, clip 5, gate valve 6, high pressure union pin thread 7, threeway 8, sealing ring 9: high pressure union box 1 is connected by flange 2 with safety valve 3, add sealing ring 9 between the flange 2, be connected by flange 2 between safety valve 3 and the threeway 8, threeway 8 body bottoms are provided with aperture piezometer tube 4 are installed, and gate valve 6 all is connected by clip 5 with gate valve 6 with threeway 8, high pressure union pin thread 7.
Claims (1)
1. an air-filling well-drilling safety gas injection device is by high pressure union box (1), flange (2), safety valve (3), piezometer tube (4), clip (5), gate valve (6), high pressure union pin thread (7), threeway (8), sealing ring (9) is formed, it is characterized in that: high pressure union box (1) is connected by flange (2) with safety valve (3), add sealing ring (9) between the flange (2), be connected by flange (2) between safety valve (3) and the threeway (8), threeway (8) body bottom is provided with aperture piezometer tube (4) is installed, gate valve (6) and threeway (8), high pressure union pin thread (7) all is connected by clip (5) with gate valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200131287U CN201068733Y (en) | 2007-07-05 | 2007-07-05 | Aerated drilling safety gas injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200131287U CN201068733Y (en) | 2007-07-05 | 2007-07-05 | Aerated drilling safety gas injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201068733Y true CN201068733Y (en) | 2008-06-04 |
Family
ID=39490113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200131287U Expired - Fee Related CN201068733Y (en) | 2007-07-05 | 2007-07-05 | Aerated drilling safety gas injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201068733Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704862A (en) * | 2012-07-02 | 2012-10-03 | 中国石油集团西部钻探工程有限公司 | Special wellhead tee connecting device for underbalanced drilling |
| CN109612329A (en) * | 2018-12-27 | 2019-04-12 | 中国人民解放军陆军工程大学 | Double balancing machine connection gas injection devices and inflating method |
-
2007
- 2007-07-05 CN CNU2007200131287U patent/CN201068733Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704862A (en) * | 2012-07-02 | 2012-10-03 | 中国石油集团西部钻探工程有限公司 | Special wellhead tee connecting device for underbalanced drilling |
| CN102704862B (en) * | 2012-07-02 | 2015-05-13 | 中国石油集团西部钻探工程有限公司 | Special wellhead tee connecting device for underbalanced drilling |
| CN109612329A (en) * | 2018-12-27 | 2019-04-12 | 中国人民解放军陆军工程大学 | Double balancing machine connection gas injection devices and inflating method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20110705 |