CN203519840U - Underground microseismic monitoring instrument - Google Patents
Underground microseismic monitoring instrument Download PDFInfo
- Publication number
- CN203519840U CN203519840U CN201320718381.8U CN201320718381U CN203519840U CN 203519840 U CN203519840 U CN 203519840U CN 201320718381 U CN201320718381 U CN 201320718381U CN 203519840 U CN203519840 U CN 203519840U
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- CN
- China
- Prior art keywords
- monitoring instrument
- turbine
- cable
- supporting foot
- shaft
- 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
- 238000012544 monitoring process Methods 0.000 title abstract description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model provides an underground microseismic monitoring instrument. The underground microseismic monitoring instrument comprises a body; a servo motor connected via a cable is arranged in a central hole at the upper part of the body; the servo motor shaft is a worm gear shaft; a screw rod shaft is in gear connection with a turbine; a supporting foot extends from the lower part of the turbine; the supporting foot and the turbine are connected with the body via a supporting foot shaft; the inner wall of the body whose one side is corresponding to the supporting foot is provided with a three-component geophone; and the three-component geophone is connected with the outside via a data cable. According to the monitoring instrument, seismic energy is transferred into electrical energy; as the inductively-generated microseismic energy is excessively weak, the frequency is high (about 100 to 1500Hz) and the spreading directions are complicated, the monitoring instrument abuts tightly against the well wall via the supporting foot, the monitoring instrument can directly receive microseismic waves sent from the well wall, the structure is simple, and performances are reliable.
Description
Technical field
The utility model relates to Petroleum Production field tests, is specifically related to down-hole microearthquake monitor.
Background technology
Microearthquake Fracturing Monitoring technology is an important new technology in low-permeability oil gas reservoir fracturing reform field in recent years.This technology by ground, offset well or with the wave detector in well, monitor microearthquake ripple that fractured well brings out in fracturing process fracturing process is described in geometric configuration and the spatial of crack growth.Height, length and position angle that it can provide pressing crack construction to produce crack in real time, utilize these information can Optimum Fracturing Design and optimization well pattern or other oil-field development measures, thereby improve recovery ratio.
Summary of the invention
In order to overcome the deficiency of background technology, the utility model provides down-hole microearthquake monitor, on ground, offset well or monitor with the wave detector in well the microearthquake ripple that fractured well brings out in fracturing process and address the above problem.
The technical solution of the utility model is: down-hole microearthquake monitor comprises body, body central upper portion has cable to pass in hole, between cable and body center pit, be provided with O-ring seal, power cable in cable is electrically connected servomotor, servomotor fixing with body in, between servomotor and body, be provided with sealing gasket, servo motor shaft is worm shaft, screw shaft gear connects turbine, turbine bottom is extended with supporting leg, supporting leg is connected with body by leg shaft with turbine, in the inner body wall of the corresponding side of supporting leg, be provided with three-component seismometer, three-component seismometer is connected with outside by data cable.
The utlity model has following beneficial effect: this detector is by converting seismic energy to electric energy, due to induce microseism energy very a little less than, frequency very high (being about 100 ∽ 1500Hz), the direction of propagation is complicated, by supporting leg, detector is abutted against in the borehole wall, make detector can directly accept the seismic wave minutely that the borehole wall transmits, have simple in structure, the feature of dependable performance.
accompanying drawing explanation:
Accompanying drawing 1 is structural representation of the present utility model.
1-cable in figure, 2-O-ring seal, 3-body, 4-data cable, 5-three-component seismometer, 6-power cable, 7-servomotor, 8-sealing gasket, 9-worm shaft, 10-turbine, 11-leg shaft, 12-supporting leg.
embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, down-hole microearthquake monitor, comprise body 3, body has cable 1 to pass in 3 central upper portion holes, between cable 1 and body 3 center pits, be provided with O-ring seal 2, power cable 6 in cable 1 is electrically connected servomotor 7, servomotor 7 fixing with body 3 in, between servomotor 7 and body 3, be provided with sealing gasket 8, servomotor 7 axles are worm shaft 9, screw shaft 9 gears connect turbine 10, during electric machine rotation, worm drive turbine rotation, turbine 10 bottoms are extended with supporting leg 12, supporting leg 12 is connected with body 3 by leg shaft 11 with turbine 10, on body 3 inwalls of the corresponding side of supporting leg 12, be provided with three-component seismometer 5, supporting leg 12 stretches out when being supported on the borehole wall, the opposite side that three-component seismometer abuts against the borehole wall receives the small seismic signal that the borehole wall transmits, three-component seismometer 5 is by data cable 4 and the outside output seismic signal that is connected.
Claims (1)
1. a down-hole microearthquake monitor, comprise body (3), it is characterized in that: in body (3) central upper portion hole, have cable (1) to pass, between cable (1) and body (3) center pit, be provided with O-ring seal (2), power cable (6) in cable (1) is electrically connected servomotor (7), servomotor (7) fixing with body (3) in, between servomotor (7) and body (3), be provided with sealing gasket (8), servomotor (7) axle is worm shaft (9), screw shaft (9) gear connects turbine (10), turbine (10) bottom is extended with supporting leg (12), supporting leg (12) is connected with body (3) by leg shaft (11) with turbine (10), on body (3) inwall of the corresponding side of supporting leg (12), be provided with three-component seismometer (5), three-component seismometer (5) is connected with outside by data cable (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320718381.8U CN203519840U (en) | 2013-11-15 | 2013-11-15 | Underground microseismic monitoring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320718381.8U CN203519840U (en) | 2013-11-15 | 2013-11-15 | Underground microseismic monitoring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519840U true CN203519840U (en) | 2014-04-02 |
Family
ID=50378752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320718381.8U Expired - Fee Related CN203519840U (en) | 2013-11-15 | 2013-11-15 | Underground microseismic monitoring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203519840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479098A (en) * | 2017-07-14 | 2017-12-15 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | With well micro-seismic monitoring technique in a kind of hydraulic fracturing process |
-
2013
- 2013-11-15 CN CN201320718381.8U patent/CN203519840U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479098A (en) * | 2017-07-14 | 2017-12-15 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | With well micro-seismic monitoring technique in a kind of hydraulic fracturing process |
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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: 20140402 |