CN202338334U - Pressure-drop testing device of high-pressure well - Google Patents
Pressure-drop testing device of high-pressure well Download PDFInfo
- Publication number
- CN202338334U CN202338334U CN2011204761107U CN201120476110U CN202338334U CN 202338334 U CN202338334 U CN 202338334U CN 2011204761107 U CN2011204761107 U CN 2011204761107U CN 201120476110 U CN201120476110 U CN 201120476110U CN 202338334 U CN202338334 U CN 202338334U
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- pressure
- well
- plug
- testing
- well head
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Abstract
The utility model relates to a pressure-drop testing device of a high-pressure well, comprising a plug (1), a connecting cap (2) and a wellhead short joint (3) which are in threaded connection, wherein two inner screw threads (7) are arranged in the plug (1), and are respectively in threaded connection with a well-programmed pressure meter; and the wellhead short joint (3) is provided with an emptying gate (5). The pressure-drop testing device is used for testing pressure drop of the high-pressure well in a low-permeability oil field and has the advantages that the pressure resistance is 35Mpa, so that the problem that the pressure-resistance index in the conventional well-testing blowout prevention is not enough is solved, and the construction safety factor is increased; the pressure-drop testing device is short, so that the transportation is convenient; and the parts are fewer, the connection is convenient and reliable, the operation can be finished by one person, and the construction efficiency is improved.
Description
Technical field
The utility model relates to a kind of low-permeability oilfield high pressure well apparatus for testing pressure drop.
Background technology
Oil field low-permeability oilfield high pressure well (greater than 20Mpa, the well head pressure non-return-to-zero) pressure drop adopts conventional well testing blowout prevention to close at well head, and the withstand voltage index of conventional well testing blowout prevention is 20Mpa, and this kind state is limit operation, has potential safety hazard.Conventional well testing blowout prevention comprises upper plug head, pressure cap, rubber packing, and several parts of lubricator (on ladder stand and emptying gate are arranged) are formed, and length surpasses 2 meters needs engineering trucks and transports; Need be when utilizing the well testing lubricator to carry out high pressure well pressure fall-off test operation with utilizing steel wire, rope socket to be connected with pressure gauge; Place in the lubricator, steel wire is passed the blowout prevention upper plug head, lubricator is with after well head is connected; Steel wire is twined in the well head gate, and fastening blowout prevention plug guarantees sealing.Install and want two people cooperation to fulfil assignment at least, very complicated.
The utility model content
For overcoming the defective that above-mentioned prior art exists, the technical problem that the utility model will solve provides a kind of high pressure well apparatus for testing pressure drop, can eliminate safe hidden trouble, and increases substantially efficiency of construction.
For solving the problems of the technologies described above, the utility model high pressure well apparatus for testing pressure drop is threaded by plug 1, attachment cap 2 and well head tap 3 and forms, and wherein, screw threads 7 in two is arranged in this plug 1; Should all be threaded with the pressure gauge of programmed by interior screw thread 7, this pressure gauge is arranged in above-mentioned well head tap 3, and this well head tap is provided with emptying gate 5.
In above-mentioned well head tap 3 seal grooves sealing ring 4 is set, cooperation plug 1 is realized and well head tap 3 sealings, is guaranteed the accurate of pressure fall-off test data.
There is handle 8 above-mentioned plug 1 outside, makes things convenient for being connected of plug 1 and well head tap 3.
Above-mentioned attachment cap external surface is uniformly distributed with 4 Hook wrench holes 6, and its function is when using Hook wrench to be fastenedly connected, as the origin of force of Hook wrench.
After adopting such technical scheme, the utility model is withstand voltage to reach 35Mpa, solves the not enough problem of the withstand voltage index of conventional well testing blowout prevention, has improved the construction safety coefficient; This device length is short, is convenient to transportation and light; This device feature is few, and easy to connect reliable, a people can operate, and improves efficiency of construction.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further detailed explanation:
Fig. 1 is the structural representation of the utility model high pressure well apparatus for testing pressure drop.
The specific embodiment
As shown in Figure 1, the utility model high pressure well apparatus for testing pressure drop is threaded by plug 1, attachment cap 2 and well head tap 3 and forms, and wherein, screw threads 7 in two is arranged in this plug 1; Should all be threaded with the pressure gauge of programmed by interior screw thread 7, pressure gauge is arranged in above-mentioned well head tap 3, and this well head tap is provided with emptying gate 5.
In above-mentioned well head tap 3 seal grooves sealing ring 4 is set, cooperation plug 1 is realized and well head tap 3 sealings, is guaranteed the accurate of pressure fall-off test data.
There is handle 8 above-mentioned plug 1 outside, makes things convenient for being connected of plug 1 and well head tap 3.
Above-mentioned attachment cap external surface is uniformly distributed with 4 Hook wrench holes 6, and its function is when using Hook wrench to be fastenedly connected, as the origin of force of Hook wrench.
As shown in Figure 1; When carrying out the pressure fall-off test of high pressure well; To test with pressure gauge requiring to be ready to, be connected in the plug 1 interior screw thread 7, and plug 1 and well head tap 3 will be connected through attachment cap 2 according to data admission in the Test Design; It is fastening to beat on attachment cap 26 places, Hook wrench hole with Hook wrench, and emptying gate 5 places closed condition.With car testing arrangement is brought to the pressure fall-off test well, testing arrangement well head tap oil pipe end of thread is connected with well head, and fastening with pipe wrench, guarantee sealing.Open the production tree test strobe, require to carry out the admission data according to pressure fall-off test.After test finishes, close the production tree test strobe, open emptying gate 5 and carry out release and discharge well head tap 3 inner fluids.One human pipe wrench unloads testing arrangement from production tree, dismantle attachment cap 2 with Hook wrench, carries and shakes hands plug 1 and well head tap were opened in 3 minutes, screws off pressure gauge, complete operation.
Combine accompanying drawing that the preferred specific embodiment of the utility model has been done detailed description above; But; The utility model is not limited to the above-described embodiment and examples; In the ken that those skilled in the art possessed, can also under the prerequisite that does not break away from the utility model design, make different the variation.
Claims (4)
1. high pressure well apparatus for testing pressure drop, being threaded by plug (1), attachment cap (2) and well head tap (3) forms, and it is characterized in that: screw threads (7) in two are arranged in the said plug (1); Screw thread (7) all is threaded with the pressure gauge of programmed in said, and this pressure gauge is arranged in said well head tap (3), and said well head tap (3) is provided with emptying gate (5).
2. high pressure well apparatus for testing pressure drop according to claim 1 is characterized in that: place sealing ring (4) in said well head tap (3) seal groove.
3. high pressure well apparatus for testing pressure drop according to claim 1 is characterized in that: there is handle (8) said plug outside.
4. high pressure well apparatus for testing pressure drop according to claim 1 is characterized in that: said attachment cap (2) external surface is uniformly distributed with 4 Hook wrench holes (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204761107U CN202338334U (en) | 2011-11-25 | 2011-11-25 | Pressure-drop testing device of high-pressure well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204761107U CN202338334U (en) | 2011-11-25 | 2011-11-25 | Pressure-drop testing device of high-pressure well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202338334U true CN202338334U (en) | 2012-07-18 |
Family
ID=46487027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204761107U Expired - Fee Related CN202338334U (en) | 2011-11-25 | 2011-11-25 | Pressure-drop testing device of high-pressure well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202338334U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334895A (en) * | 2013-07-17 | 2013-10-02 | 中国海洋石油总公司 | High-pressure fluid pump of underground formation tester |
| CN104514545A (en) * | 2013-09-29 | 2015-04-15 | 中国石油天然气股份有限公司 | Pressure drop tester for wellhead of water injection well |
| CN104895558A (en) * | 2015-05-20 | 2015-09-09 | 中国石油天然气股份有限公司 | High pressure water well pressure drop monitoring device |
-
2011
- 2011-11-25 CN CN2011204761107U patent/CN202338334U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334895A (en) * | 2013-07-17 | 2013-10-02 | 中国海洋石油总公司 | High-pressure fluid pump of underground formation tester |
| CN103334895B (en) * | 2013-07-17 | 2015-11-18 | 中国海洋石油总公司 | A kind of high-pressure fluid pump of underground formation tester |
| CN104514545A (en) * | 2013-09-29 | 2015-04-15 | 中国石油天然气股份有限公司 | Pressure drop tester for wellhead of water injection well |
| CN104895558A (en) * | 2015-05-20 | 2015-09-09 | 中国石油天然气股份有限公司 | High pressure water well pressure drop monitoring device |
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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: 20120718 Termination date: 20201125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |