CN2293061Y - Wellhead oil pipe pressure test and leakage test device - Google Patents
Wellhead oil pipe pressure test and leakage test device Download PDFInfo
- Publication number
- CN2293061Y CN2293061Y CN 97205195 CN97205195U CN2293061Y CN 2293061 Y CN2293061 Y CN 2293061Y CN 97205195 CN97205195 CN 97205195 CN 97205195 U CN97205195 U CN 97205195U CN 2293061 Y CN2293061 Y CN 2293061Y
- Authority
- CN
- China
- Prior art keywords
- joint
- stop valve
- well head
- oil pipe
- web member
- 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 - Fee Related
Links
Abstract
The utility model relates to a pressure test and leakage test device for an oil pipe on a well head, which is used for testing the leakage situation of an oil pipe post under an oil well. The utility model is composed of a T-shaped connecting piece (6) on the well head, a high-pressure stop valve (2), a one-way valve (8), a stop valve joint (3), a one-way valve joint (7), an oil union joint (9), an instrument connecting pipe (4), a pressure gauge (5), a cushion ring (10) and a thread protector (11). The utility model has the advantages of simple structure, convenient use and high safety. The pressure test and leakage test device for an oil pipe on a well head can ensure that the leakage situation of the oil pipe post under an oil well can be quickly and correctly tested under the condition that leak pipelines are tested on ground and the device is sealed well. Thus, the success ratio of underground operation is improved, and construction period is shortened.
Description
The utility model relates to a kind of well head oil pipe pressure test and leakage test device that is used to check oil-water well downhole oil tubing string leakage situation.
In oil-water well borehole operation work progress, need the check down-hole string whether to miss.At present, the method for check oil-water well down-hole string leakage situation is that cementing truck directly is connected with well head oil pipe upper end by surface pipeline, suppresses the back and changes according to Pump pressure meter, judges whether tubing string misses.Above-mentionedly test leakage that process does not adopt special pressure testing device, but cementing truck is directly linked to each other with oil pipe, thereby can not guarantee the better seal performance, it is inaccurate that the proofer is judged.
Task of the present utility model is to provide a kind of well head oil pipe pressure test and leakage test device, utilizes this device can check the leakage degree of running string comparatively accurately, reliably, improves the success ratio of borehole operation construction.
The utility model is to realize like this.It is by unloading crimp head 1, high-pressure stop valve 2, stop valve joint 3, instrument connecting leg 4, tensimeter 5, the "T"-shaped web member 6 of well head, retaining valve joint 7, retaining valve 8, union joint 9, packing ring 10 and thread protector 11 are formed, its structure and assembling feature are as follows: the "T"-shaped web member 6 of well head passes on left stop valve joint 3 and joins with high-pressure stop valve 2, stop valve 2 opposite sides are equipped with and unload crimp head 1, the "T"-shaped web member of well head 6 right sides link to each other with retaining valve 8 by retaining valve joint 7, retaining valve 8 opposite sides are equipped with union joint 9, more than be between each part and be threaded, wherein, high-pressure stop valve 2 and stop valve joint 3, Fen Do is equipped with packing ring 10 between retaining valve 8 and the retaining valve joint 7, tensimeter 5 is equipped with by instrument connecting leg 4 in the "T"-shaped web member of well head 6 tops, and thread protector 11 is equipped with at screw thread position, lower end.During use, the "T"-shaped web member 6 lower end screw threads of this device are linked to each other with well head oil pipe upper end, right side union joint 9 links to each other with cementing truck.Then, start cementing truck and suppress the 5-8Mpa termination of pumping.At this moment, the retaining valve 8 quick non-returns of this device, whether the proofer can stablize from the reading of tensimeter 5 is found out tubing string leakage situation intuitively, so that take measures.
The utility model is simple in structure, easy to use, safe and reliable, utilize it can guarantee to test under the situation of fistulae line, device good seal on ground, check the leakage situation of the tubing string of going into the well quickly and accurately, thereby improve the borehole operation success ratio, shorten construction period, obtain bright good economic benefit.
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.
In the utility model, the "T"-shaped web member of well head (6) is one to be "T"-shaped three-way pipe, its horizontal pipeline section both side ends band pin thread, middle top surface have circular hole in order to welding instrument connecting leg 4, have the pin thread that matches with the oil pipe female screw with the vertical section lower end that horizontal pipeline section welds mutually.High-pressure stop valve (2) and retaining valve (8) do not adopt YJF-12OH31.5Mpa gate valve and DXF-75K3.0Mpa ball valve.Unloading crimp head (1), stop valve joint (3), retaining valve joint (7), union joint (9) divides Do to match with stop valve (12) and retaining valve (8) size.Except that the packing ring material was red copper, remaining part all adopted the 45# steel to do.Overall dimensions length * wide * height after this device assembling is 620mm * 120mm * 600mm, heavy 21kg, safe bearing load pressure 20Mpa, working pressure 5-8Mpa.
Claims (2)
1, a kind of well head oil pipe pressure test and leakage test device, by unloading crimp head (1), high-pressure stop valve (2), stop valve joint (3), instrument connecting leg (4), tensimeter (5), the "T"-shaped web member of well head (6), retaining valve joint (7), retaining valve (8), union joint (9), packing ring (10) and thread protector (11) are formed, it is characterized in that: the "T"-shaped web member of well head (6) passes on left stop valve joint (3) and links to each other with high-pressure stop valve (2), stop valve 2 opposite sides are equipped with and unload crimp head (1); " T " shape web member (6) right side links to each other with retaining valve (8) by retaining valve joint (7); and retaining valve (8) opposite side is equipped with union joint (9); be between above each part and be threaded; high-pressure stop valve (2) and stop valve joint (3); between retaining valve (8) and the retaining valve joint (7) packing ring (10) is housed respectively; by instrument connecting leg (4) tensimeter (5) is housed above the "T"-shaped web member (6), thread protector (11) is equipped with at screw thread position, lower end.
2, well head oil pipe pressure test and leakage test device according to claim 1, it is characterized in that, the "T"-shaped web member of well head (6) is one to be: "T"-shaped three-way pipe, its horizontal pipeline section both side ends band pin thread, middle top surface has circular hole, has pin thread with the vertical pipeline section lower end that horizontal pipeline section welds mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205195 CN2293061Y (en) | 1997-01-29 | 1997-01-29 | Wellhead oil pipe pressure test and leakage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97205195 CN2293061Y (en) | 1997-01-29 | 1997-01-29 | Wellhead oil pipe pressure test and leakage test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2293061Y true CN2293061Y (en) | 1998-09-30 |
Family
ID=33925477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97205195 Expired - Fee Related CN2293061Y (en) | 1997-01-29 | 1997-01-29 | Wellhead oil pipe pressure test and leakage test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2293061Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424479C (en) * | 2002-09-12 | 2008-10-08 | A.R.I.流体控制部件农业合作协会有限公司 | Valve for prevention of low flow rates through flow meter |
| CN103032061A (en) * | 2012-12-14 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司 | Method for detecting sealing quality of oil pipe at well head |
-
1997
- 1997-01-29 CN CN 97205195 patent/CN2293061Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424479C (en) * | 2002-09-12 | 2008-10-08 | A.R.I.流体控制部件农业合作协会有限公司 | Valve for prevention of low flow rates through flow meter |
| CN103032061A (en) * | 2012-12-14 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司 | Method for detecting sealing quality of oil pipe at well head |
| CN103032061B (en) * | 2012-12-14 | 2015-08-19 | 中国石油集团川庆钻探工程有限公司 | The well head detection method of tubing seal quality |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |