CN207780266U - Active source microseismic monitoring device - Google Patents
Active source microseismic monitoring device Download PDFInfo
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- CN207780266U CN207780266U CN201820007402.8U CN201820007402U CN207780266U CN 207780266 U CN207780266 U CN 207780266U CN 201820007402 U CN201820007402 U CN 201820007402U CN 207780266 U CN207780266 U CN 207780266U
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- fracturing
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 79
- 238000010892 electric spark Methods 0.000 claims abstract description 47
- 241000446313 Lamella Species 0.000 claims description 16
- 239000000523 sample Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000006467 substitution reaction Methods 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
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- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
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- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a driving source microseismic monitoring device, which comprises a monitoring well I, a fracturing well and a monitoring well II; the monitoring well I and the monitoring well II are respectively arranged on two sides of the fracturing well, a seismograph is arranged on one side of the monitoring well I, and an electric spark instrument is arranged on one side of the monitoring well II; and surface detectors are arranged between the monitoring well I and the fracturing well and between the fracturing well and the monitoring well II and are connected with the seismograph through monitoring connecting cables. The utility model discloses a seismic wave's exchange principle, before the fracturing, simulate substitution test with the electric spark in the fracturing position, survey stratum seismic wave speed, establish seismic source energy and crack level and in addition the relation to under the unchangeable circumstances of keeping whole monitoring system, carry out the microseism monitoring during the fracturing construction, make it accord with the condition that the earthquake exchanged betterly, guaranteed the accuracy of crack location, the rank is judged accurately, makes the monitoring evaluate science reliable.
Description
Technical field
The utility model is related to a kind of active source micro seismic monitoring device, belongs to and check unconventional gas reservoir fracturing reform
Technical field.
Background technology
Unconventional gas is different from conventional gas, is stored in rock mass, is opened with adsorbed state for the gas of exploitation
It needs to carry out pressure break seam to rock mass when adopting, gas could be along crack output.Pressure break seam is all in the drilling well of the thousands of meters of depths in underground
The quality of middle progress, fracturing effect is closely related with the gas production of gas well, and the method and technology of Evaluation: Current fracturing effect is micro-ly
Shake monitoring, this method is that geophone is arranged in drilling well mouth earth's surface or adjacent drilling well, is received in underground fracture work progress
The microseism signal that rock breakdown generates carries out microseism positioning and energy spectrometer using the seismic wave of each geophone station, determines
The spatial position distribution in crack and crack rank.Since this method only carries out passive microseismic signals monitoring, it is anti-that positioning cannot be solved
Speed uniqueness during drilling and energy the Uniqueness cause crack positioning accuracy and crack level deviation big, influence to apply
The evaluation of work seam effect.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of active source micro seismic monitoring device, the active source is micro-
The velocity of wave and energy parameter that shake monitoring device is ruptured by pressure break advance pedestrian's work simulated formation, establish the rock mass speed of monitoring section
And rupture parameters, micro-seismic monitoring is carried out in pressing crack construction, with data analysis, simulation test parameter is used for inverting, makes to split
Seam positioning and crack rank judge that precision is greatly improved, and avoid the generation of estimation error, improve evaluation of Fracturing Effect on Compact Sandstone
Quality.
The utility model is achieved by the following technical programs.
A kind of active source micro seismic monitoring device provided by the utility model, including monitoring well I, fractured well, monitoring well II；Institute
It states monitoring well I and monitoring well II is respectively provided at the both sides of fractured well, seismic detector is equipped in the side of monitoring well I, monitoring well II
Side is equipped with electric spark instrument；It is equipped with earth's surface detection between the monitoring well I and fractured well, between fractured well and monitoring well II
Device, earth's surface wave detector are connect by monitoring connecting cable with seismic detector；Underground detection is equipped in the monitoring well I and monitoring well II
Device string, borehole geophone string are connect by monitoring connecting cable with seismic detector；The electric spark instrument is equipped with electric spark cable, electricity
One end of spark cable is connected with electric spark probe, and electric spark probe is located in fractured well.
It is connected by line synchro between the seismic detector and electric spark instrument.
Pressure break seam section is equipped in the fractured well, electric spark probe is located in pressure break seam section.
The earth's surface wave detector is earth's surface three-component geophone, and borehole geophone string is underground three-component geophone string, well
Position height of the lower string in monitoring well I, monitoring well II is equal with the position height on pressure break seam section bottom edge.
The monitoring well I and monitoring well II are placed equidistant with respectively in the both sides of fractured well.
The seismographic road number is no less than 72.
The earth's surface wave detector is arranged in a ring at the 20cm of fractured well, forms annulate lamella, spacing annulate lamella 10
~20m, then arrange the annulate lamella of an earth's surface wave detector arranged in a ring.
The annulate lamella at least haves three layers.
The beneficial effects of the utility model are：Using the principle of reciprocity of seismic wave, before pressure break, with electric spark in pressure break
Position carries out stimulated replacement experiment, measures formation seismic wave velocity, establishes seismic source energy and the another relationship of crack grade, and is keeping whole
In the case that a monitoring system is constant, micro-seismic monitoring is carried out during pressing crack construction, it is made to have better conformed to earthquake exchange
Condition, ensure that crack positioning accurate, rank accuracy of judgement so that monitoring and evaluation science is reliable.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the arrangement schematic diagram of the utility model earth's surface wave detector；
Fig. 3 is the utility model pressure construction working figure；
In figure：1- monitoring wells I, 2- fractured wells, 3- monitoring wells II, 4- seismic detectors, 5- electric spark instrument, 6- earth's surface wave detectors,
7- borehole geophone strings, 8- line synchros, 9- monitor connecting cable, 10- electric spark cables, and 11- electric sparks are popped one's head in, and 12- pressure breaks are made
Stitch section, 13- fracturing fluid injection pipes, 14- fracturing unit trucks.
Specific implementation mode
Be described further below the technical solution of the utility model, but claimed range be not limited to it is described.
As shown in Figure 1, a kind of active source micro seismic monitoring device, including monitoring well I 1, fractured well 2, monitoring well II 3；It is described
Monitoring well I 1 and monitoring well II 3 are respectively provided at the both sides of fractured well 2, and seismic detector 4, monitoring well II are equipped in the side of monitoring well I 1
3 side is equipped with electric spark instrument 5；It is equipped with ground between the monitoring well I 1 and fractured well 2, between fractured well 2 and monitoring well II 3
Table wave detector 6, earth's surface wave detector 6 are connect by monitoring connecting cable 9 with seismic detector 4；In the monitoring well I 1 and monitoring well II 3
Equipped with borehole geophone string 7, borehole geophone string 7 is connect by monitoring connecting cable 9 with seismic detector 4；On the electric spark instrument 5
Equipped with electric spark cable 10, one end of electric spark cable 10 is connected with electric spark probe 11, and electric spark probe 11 is located at fractured well 2
It is interior.
It is connected by line synchro 8 between the seismic detector 4 and electric spark instrument 5, electric spark instrument 5 is high power intelligent electric spark
Charge-discharge machine, it is possible to provide the Alternating Current Power Supply of 220V and the energy storage for calling 500J -10000J quickly repeat to fill using capacitor-type
Electric mode, rechargeable energy are arranged automatically, reach the function of automatic discharging, high voltage protective.
Pressure break seam section 12 is equipped in the fractured well 2, electric spark probe 11 is located in pressure break seam section 12, electrical fire
Flower probe 11 is high temperature high voltage resistant platinum discharge head, and reignition fidelity is more than 5000 times.
The earth's surface wave detector 6 be earth's surface three-component geophone, borehole geophone string 7 be underground three-component geophone string, 3
Dividing to for a vertical component, 2 mutually perpendicular horizontal components, borehole geophone string 7 and 3 earth's surface wave detectors 6 has several,
Frequency is 100Hz, position height and pressure break seam section 12 bottom of the borehole geophone string 7 in monitoring well I 1, monitoring well II 3
The position height on side is equal.
The monitoring well I 1 and monitoring well II 3 are placed equidistant with respectively in the both sides of fractured well 2.
The road number of the seismic detector 4 is no less than 72, and minimal sampling time is not more than 1 microsecond, and the maximum sampling time is not small
In 3 hours.
The earth's surface wave detector 6 is arranged in a ring at the 20cm apart from fractured well 2, forms annulate lamella, spacing annulate lamella
10~20m, then arrange the annulate lamella of an earth's surface wave detector 6 arranged in a ring；The annulate lamella at least haves three layers, such as Fig. 2 institutes
Show.
Further, the monitoring step of the utility model is as follows：
1. preparing equipment：Excavation monitoring well I 1, fractured well 2, monitoring well II 3 prepare fracturing unit truck 14, seismic detector 4, electric spark
Instrument 5 receives wave detector, electric spark probe 11 and fracturing fluid injection pipe 13, wherein all position coordinates and depth for receiving wave detector
Degree should measure, and establish three-dimensional system of coordinate as origin using aperture of constructing；
2. arranging detecting system：It is respectively arranged seismic detector 4 and electric spark instrument 5 in the side of monitoring well I 1 and monitoring well II 3,
Setting pressure break seam section 12 in fractured well 2, electric spark probe 11 is connected on electric spark instrument 5, and electric spark probe 11 is put
It sets at the pressure break seam section 12 of fractured well 2, and contacts 3 kinds of modes of arrangement, cloth using earth's surface, underground, earth's surface and underground
It sets and receives wave detector；The earth's surface wave detector 6 of earth's surface is arranged in a ring around fractured well 2, forms annulate lamella, spacing annulate lamella
10~20m, then arrange the annulate lamella of an earth's surface wave detector 6 arranged in a ring, annulate lamella is no less than 3 layers, gos deep into bedrock formation
In, the borehole geophone string 7 of underground is individually positioned in monitoring well I 1 and monitoring well II 3, the height and pressure of borehole geophone string 7
The position height for splitting 12 bottom edge of seam section is equal, and the distance between each wave detector in borehole geophone string 7 be 1m~
2m, earth's surface wave detector 6 and borehole geophone string 7 are connect with seismic detector 4, are formed earth's surface and are contacted arrangement with underground；
3. connecting equipment：It is connected with line synchro 8 between seismic detector 4 and electric spark instrument 5, electric spark probe 11 and electric spark instrument
It is connected with electric spark cable 10 between 5, borehole geophone string 7 is connect by monitoring connecting cable 9 with seismic detector 4, monitoring connection
Cable 9 and electric spark cable 10 are high pressure connecting cable, and the anti-water depth that leaks electricity reaches 5000m, and resistance is less than 100 Europe；
4. carrying out simulation microseism：Carry out microseism with electric spark instrument 5, carry out respectively 10 descending ranks (100J,
200J, 500J, 800J, 1000J, 2000J, 3000J, 5000J, 8000J, 10000J) simulation, be used in combination seismic detector 4 record ground
Seismic wave shape, it is desirable that seismic waveform is complete, first arrival is clear, and energy is recorded with earth's surface wave detector 6 and borehole geophone string 7；
5. carrying out pressing crack construction：After completing simulation, electric spark instrument 5 is changed to fracturing unit truck 14, pressing crack construction is carried out, uses pressure
It splits liquid injection pipe 13 and fracturing plugging plug is carried out to the both ends of pressure break seam section 12, pressurizeed in pressure construction, voltage stabilizing and let out
During pressure, seismic detector 4, earth's surface wave detector 6, borehole geophone string 7 keep continuously detecting, acquire, as shown in Figure 3；
6. microseism data analyzing processing：In the data copy to computer recorded, seismic waveform is filtered
Processing, keeps waveform clear, and seismic phase is apparent, by waveform cross-correlation, first arrival time control methods, divides the identification microseism time, reads
Longitudinal and shear wave first arrival time and amplitude of each microseismic event on seismic detector 4 are taken, has earth's surface to each using same microseismic event
Travel-time difference Δ T of longitudinal and shear wave when walking with electric spark simulation of wave detector 6, borehole geophone string 7p, double difference Δ TS, use inversion formula
Carry out minimum microquake sources positioning；
7. determining the crack rank of each microseismic event：Pressure break is rejected at the microseismic event other than seam range, according to actively
The energy earthquake magnitude of spark source calibration determines the crack rank of each microseismic event.
The wave detector that receives is earth's surface wave detector 6 and borehole geophone string 7；
The step 6. in, inversion formula is：
Wherein, S is microquake sources path of integration matrix, MpFor space compressional slowness matrix, TpFor longitudinal wave hourage matrix,
MsFor space shear-wave slowness matrix, TsFor shear wave hourage matrix, Δ TpiFor compressional wave time difference, Δ TsiFor shear wave slowness.
Embodiment
Waterside town Da Zhai coal seam gas field pilot production hole pressure break reforming test：Using individual well, Xu monitoring modes carry out, ground surrounds
Transformation 96 earth's surface wave detectors 6 of arrangement, monitor 800 meters of well depth, 12 depth of pressure break seam section in fractured well 2 be 560m~
780m carries out electric spark forward simulation I, II, III, IV before pressure break in the tri- design pressure positions 580m, 650m, 750m, totally 4 grades
Energy, corresponding seam length is 10m, 6m, 5m, 3m, just performs vertical and horizontal seismic wave speed and amplitude of wave form range value；Later
In pressing crack constructions, observation system, instrument, parameter constant are kept, work progress is monitored, whole pressure break signals are collected,
Inverting is carried out using the vertical and horizontal seismic wave speed and signal amplitude of electric spark forward modeling, obtains fracture length and the crack of fracturing reform
Space distribution situation.
Claims (8)
1. a kind of active source micro seismic monitoring device, including monitoring well I (1), fractured well (2), monitoring well II (3), it is characterised in that：
The monitoring well I (1) and monitoring well II (3) are respectively provided at the both sides of fractured well (2), and earthquake is equipped in the side of monitoring well I (1)
The side of instrument (4), monitoring well II (3) is equipped with electric spark instrument (5)；Between the monitoring well I (1) and fractured well (2), fractured well
(2) earth's surface wave detector (6) is equipped between monitoring well II (3), earth's surface wave detector (6) is by monitoring connecting cable (9) and ground
Instrument (4) is shaken to connect；Borehole geophone string (7), borehole geophone string (7) are equipped in the monitoring well I (1) and monitoring well II (3)
It is connect with seismic detector (4) by monitoring connecting cable (9)；The electric spark instrument (5) is equipped with electric spark cable (10), electric spark
One end of cable (10) is connected with electric spark probe (11), and electric spark probe (11) is located in fractured well (2).
2. active source micro seismic monitoring device as described in claim 1, it is characterised in that：The seismic detector (4) and electric spark instrument
(5) it is connected by line synchro (8) between.
3. active source micro seismic monitoring device as described in claim 1, it is characterised in that：Pressure break is equipped in the fractured well (2)
Seam section (12), electric spark probe (11) are located in pressure break seam section (12).
4. active source micro seismic monitoring device as described in claim 1, it is characterised in that：The earth's surface wave detector (6) is earth's surface
Three-component geophone, borehole geophone string (7) be underground three-component geophone string, borehole geophone string (7) monitoring well I (1),
Position height in monitoring well II (3) is equal with the position height on pressure break seam section (12) bottom edge.
5. active source micro seismic monitoring device as described in claim 1, it is characterised in that：The monitoring well I (1) and monitoring well II
(3) it is placed equidistant with respectively in the both sides of fractured well (2).
6. active source micro seismic monitoring device as described in claim 1, it is characterised in that：The road number of the seismic detector (4) is many
In 72.
7. active source micro seismic monitoring device as described in claim 1, it is characterised in that：The earth's surface wave detector (6) is in a ring
Be arranged at the 20cm apart from fractured well (2), formed annulate lamella, spacing 10~20m of annulate lamella, then arrange one it is arranged in a ring
Earth's surface wave detector (6) annulate lamella.
8. active source micro seismic monitoring device as claimed in claim 7, it is characterised in that：The annulate lamella at least haves three layers.
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| CN201820007402.8U CN207780266U (en) | 2018-01-03 | 2018-01-03 | Active source microseismic monitoring device |
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| CN201820007402.8U CN207780266U (en) | 2018-01-03 | 2018-01-03 | Active source microseismic monitoring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226995A (en) * | 2018-01-03 | 2018-06-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Active source microseismic monitoring device and method |
| CN109577943A (en) * | 2018-10-22 | 2019-04-05 | 中国地质调查局水文地质环境地质调查中心 | A kind of wellbore trace measurement method based on micro-seismic technology |
| CN113050173A (en) * | 2021-03-12 | 2021-06-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Electric method test method for slag storage leakage passage port |
| CN115142829A (en) * | 2022-05-30 | 2022-10-04 | 中煤科工开采研究院有限公司 | Staged fracturing monitoring method and vibration combined monitoring system for ground horizontal well |
-
2018
- 2018-01-03 CN CN201820007402.8U patent/CN207780266U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226995A (en) * | 2018-01-03 | 2018-06-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Active source microseismic monitoring device and method |
| CN109577943A (en) * | 2018-10-22 | 2019-04-05 | 中国地质调查局水文地质环境地质调查中心 | A kind of wellbore trace measurement method based on micro-seismic technology |
| CN113050173A (en) * | 2021-03-12 | 2021-06-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Electric method test method for slag storage leakage passage port |
| CN113050173B (en) * | 2021-03-12 | 2023-12-12 | 中国电建集团贵阳勘测设计研究院有限公司 | Electric testing method for leakage channel port of slag warehouse |
| CN115142829A (en) * | 2022-05-30 | 2022-10-04 | 中煤科工开采研究院有限公司 | Staged fracturing monitoring method and vibration combined monitoring system for ground horizontal well |
| CN115142829B (en) * | 2022-05-30 | 2023-12-01 | 中煤科工开采研究院有限公司 | Ground horizontal well staged fracturing monitoring method and vibration combined monitoring system |
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