CN2903367Y - Movable multifunctional under well corrosion monitoring apparatus - Google Patents
Movable multifunctional under well corrosion monitoring apparatus Download PDFInfo
- Publication number
- CN2903367Y CN2903367Y CNU200520022053XU CN200520022053U CN2903367Y CN 2903367 Y CN2903367 Y CN 2903367Y CN U200520022053X U CNU200520022053X U CN U200520022053XU CN 200520022053 U CN200520022053 U CN 200520022053U CN 2903367 Y CN2903367 Y CN 2903367Y
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- China
- Prior art keywords
- erosion
- ring
- oil gas
- central tube
- well pipe
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- Expired - Fee Related
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model relates to an oil gas field erosion prevention technical field which belongs to the oil gas well pipe erosion monitoring device and provides a comprehensive reflecting the down-hole erosion condition device capable of dropping erosion test pieces to the well pipe intended position and measuring simultaneously the pressure and temperature without dropping pipe column and the long-term suspension by steel wires. The oil gas well pipe erosion monitoring device comprises an upper connector 1, a test ring 2, a nylon ring 3, a rubber loop 4, a central pipe 5, a lower connector 6, a jack catch 8, a spring 8 and a pin 9. The oil gas well pipe erosion monitoring device is utilized for oil gas well pipe erosion monitoring and has the advantages of simple structure, convenient operation, comprehensive and precise measurement of the erosion environmental parameters or the like.
Description
Technical field: the utility model relates to oil gas field aseptic technic field, belongs to a kind of oil, gas well pit shaft corrosion monitor.
Background technology: oil gas field mainly adopts two kinds of corrosion monitoring process that the corrosion situation of oil pipe is monitored at present.A kind of fixed down-hole link device that is to use carries out corrosion monitoring.This down-hole link device is actually a kind of tubing nipple, is installed in by screw thread and carries out corrosion monitoring on the oil pipe.The interior steel loop and the outer steel loop that are used for corrosion monitoring are embedded in the special link device of design for it, the link device when oil well is proposed the tubing string operation with the oil pipe G.I.H, trip out with oil pipe again during following subjob, by observing the corrosion situation of inside and outside steel loop, monitor the corrosion condition of inside and outside wall of oil pipe and internal surface of sleeve pipe.Because this link device must be lowered to, trip out with oil pipe, make that its task difficulty is big, the time is long, and the oil gas well plays lower tubular column and especially is unsuitable for gas well, can not carry out the corrosion monitoring of oil, sleeve pipe at any time.Another mode is with steel wire standard test piece to be suspended in the pit shaft, takes out after placing a period of time, and the weight change before and after basis of calculation test piece is lowered to draws corrosion situation in the pit shaft by weight-loss method.Though this mode need not play lower tubular column, can't satisfy the monitoring requirement of down-hole, need simultaneously carding engine to be parked the well site for a long time or, cause the raising of monitoring cost with steel wire shearing.
Above-mentioned dual mode all can not the synchro measure pressure and temp, need carry out thermometric, pressure measurement operation in addition, measures temperature, the pressure of monitoring location, to obtain the corrosive environment parameter at this place.
Summary of the invention: the purpose of this utility model provides a kind of lower tubular column that neither need rise does not need steel wire to hang for a long time again, just corrosion coupon also can be measured the pressure and temperature of this position down synchronously to the pit shaft precalculated position, thereby reflect the mobile type multifunctional downhole well corrosion monitoring device of downhole corrosion situation all-sidedly and accurately.
The utility model mainly is made up of top connection, test ring, nylon ring, rubber ring, central tube, lower contact, claw, jump ring, pin, wherein be threaded by seal with elastometic washer between top connection and the central tube, in the top connection simultaneously screw thread is arranged, between top connection and central tube, accompany test ring and nylon ring, connect lower contact in the central tube lower end, the conical surface is arranged at the lower contact bottom, and claw is installed in the lower contact, and claw can move up and down along lower contact, and claw connects jump ring by pin.Pod apertures is arranged on the central tube.
Compared with the prior art this utility model has following advantage:
1), this utility model is simple in structure, easy to operate, uses the piano wire pulling, can realize fixed tubular column, snubbing serving pulling, do not influence the ordinary production of gas well, can realize pulling at any time, monitors the corrosion condition of tubing string at any time.
2), in monitoring corrosion situation, can realize temperature, the pressure measxurement of corrosion monitoring position synchronously, accurately obtain the corrosive environment parameter comprehensively, remove the operation that needs other downforce instrumentation piezometric power, temperature from, save construction cost.
Description of drawings: Fig. 1 is the utility model structure diagram.
The specific embodiment: referring to Fig. 1, the utility model mainly is made up of top connection 1, test ring 2, nylon ring 3, rubber ring 4, central tube 5, lower contact 6, claw 7, jump ring 8, pin 9, wherein be connected by rubber ring 4 sealing threads between top connection 1 and the central tube 5, in the top connection 1 simultaneously screw thread is arranged, between top connection 1 and central tube 5, accompany test ring 2 and nylon ring 3, connect lower contact 6 in central tube 5 lower ends, the conical surface is arranged at lower contact 6 bottoms, claw 7 is installed in the lower contact 6, and claw 7 can move up and down along lower contact 6, and claw 7 connects jump ring 8 by pin 9.On the central tube 5 pod apertures is arranged.
Top connection 1 is used to block throwing, vatman's tool; The internal thread that is connected with pressure gauge is arranged in it, and pressure gauge can be measured temperature, the pressure of this place's pit shaft.Test ring 2 is used for corrosion monitoring.Design has pod apertures on the central tube 5, to reduce the obstruction of the utility model to air-flow.
During on-the-spot the use, at first the utility model is shipped to the precalculated position with the test steel wire after, on carry, when arrival tubing coupling place, jump ring 8 is opened, claw 7 opens, and the utility model is transferred once more, claw 7 blocks in tubing coupling place, finishes fastening.
After the utility model was lowered to and trips out before the gas well and from gas well, weighing test ring 2 weight according to the weight change value, were calculated corrosion rate by weight-loss method respectively, can observe test ring 2 erosion profile simultaneously, understand the actual corrosion situation of down-hole; The pressure gauge that top connection 1 connects can be measured temperature, the pressure of this place's pit shaft, takes out the back playback of data with utility model, and temperature, the pressure that can draw in the monitoring time section change.By above-mentioned steps, finish the required parameters of corrosion monitoring and collect.
During salvaging, special-purpose fishing tool is with after the utility model is connected, on carry, the relative claw of remainder of the present utility model 7 is up, and claw 7 is regained, and is in the deblocking state, finishes unfreezing.
Claims (2)
1, mobile type multifunctional downhole well corrosion monitoring device, it is characterized in that: it is mainly by top connection (1), test ring (2), nylon ring (3), rubber ring (4), central tube (5), lower contact (6), claw (7), jump ring (8), pin (9) is formed, be connected by rubber ring (4) sealing thread between wherein top connection (1) and the central tube (5), in the top connection simultaneously (1) screw thread is arranged, between top connection (1) and central tube (5), accompany test ring (2) and nylon ring (3), connect lower contact (6) in central tube (5) lower end, the conical surface is arranged at lower contact (6) bottom, claw (7) is installed in the lower contact (6), and claw (7) can move up and down along lower contact (6), and claw (7) connects jump ring (8) by pin (9).
2, mobile type multifunctional downhole well corrosion monitoring device according to claim 1, its feature also is on the described central tube (5) pod apertures is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520022053XU CN2903367Y (en) | 2005-12-01 | 2005-12-01 | Movable multifunctional under well corrosion monitoring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520022053XU CN2903367Y (en) | 2005-12-01 | 2005-12-01 | Movable multifunctional under well corrosion monitoring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2903367Y true CN2903367Y (en) | 2007-05-23 |
Family
ID=38078776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520022053XU Expired - Fee Related CN2903367Y (en) | 2005-12-01 | 2005-12-01 | Movable multifunctional under well corrosion monitoring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2903367Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942996A (en) * | 2010-08-31 | 2011-01-12 | 新奥科技发展有限公司 | Underground corroding and sampling device and method |
| CN104033139A (en) * | 2014-06-20 | 2014-09-10 | 中国石油化工股份有限公司 | Corrosion and leakage preventing production pipe column of CO2 oil displacement injection well |
-
2005
- 2005-12-01 CN CNU200520022053XU patent/CN2903367Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942996A (en) * | 2010-08-31 | 2011-01-12 | 新奥科技发展有限公司 | Underground corroding and sampling device and method |
| CN104033139A (en) * | 2014-06-20 | 2014-09-10 | 中国石油化工股份有限公司 | Corrosion and leakage preventing production pipe column of CO2 oil displacement injection well |
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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: 20070523 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |