CN102465698A - Device and method for detecting effects and advantage directions of fracturing and water flooding - Google Patents
Device and method for detecting effects and advantage directions of fracturing and water flooding Download PDFInfo
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- CN102465698A CN102465698A CN2010105344534A CN201010534453A CN102465698A CN 102465698 A CN102465698 A CN 102465698A CN 2010105344534 A CN2010105344534 A CN 2010105344534A CN 201010534453 A CN201010534453 A CN 201010534453A CN 102465698 A CN102465698 A CN 102465698A
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Abstract
The invention discloses a device and a method for detecting effects and advantage directions of fracturing and water flooding. A control unit triggers a seismometer to sample; the seismometer acquires micro seismic signals and sends the micro seismic signals to an analog-to-digital converter; the analog-to-digital converter converts the micro seismic signals into digital signals and sends the digital signals to the control unit; and the control unit stores the digital signal in a storage unit. By adopting the technical scheme, a circumstantial evidence given by monitoring data is provided for oilfield fracturing cracks and water flooding front edge monitoring result, the fracturing and water flooding effects can be judged, and the accuracy of fracturing and water flooding front edge directions can also be judged.
Description
Technical field
The present invention relates to the microseism monitoring technical field, relate in particular to a kind of apparatus and method that detect pressure break and flood effectiveness and predominant direction thereof.
Background technology
The microseism monitoring technology is directly to write down the microseism that underground natural takes place, with the technology that underground crack, stress state, pressure distribution are judged.The underground extensive earthquake that distributing, earthquake magnitude is more little, and frequency is big more.Microseism is meant the earthquake of earthquake magnitude below-2 grades, because microseism is abiogenous, is the stress field adjustment, and the product that subterranean fracture is movable relatively need not the mankind and excites, therefore, and the microseism monitoring technology passive microseism monitoring technology that is otherwise known as.Domestic widely-used microseism monitoring technology monitoring oil field compression fracture, the injecting process to judge pressure break, flood effectiveness, are judged the fracturing fracture direction, the flood front predominant direction.In fields such as oil field development, the exploitation of meltable ore deposit, nuclear waste disposal, mine safety monitorings important application is arranged all.
The major issue of puzzlement in face of the people be monitoring result from underground hundreds of to several kms, correctness does not have circumstantial evidence.
Summary of the invention
The objective of the invention is to propose a kind of apparatus and method that detect pressure break and flood effectiveness and predominant direction thereof; Can a circumstantial evidence that provided by monitoring materials itself be provided for oil field compression fracture crack, flood front monitoring result; Both can be used for judging pressure break, flood effectiveness, can judge the correctness of pressure break, flood front direction again.
For reaching this purpose, the present invention adopts following technical scheme:
A kind of device that detects pressure break and flood effectiveness and predominant direction thereof; Comprise geophone, analog-digital converter, control module, memory cell and GPS unit; Geophone is connected with analog-digital converter, and control module is connected with analog-digital converter, memory cell and GPS unit respectively, and wherein geophone is used to gather the microseism signal and sends to analog-digital converter; Analog-digital converter is used for the microseism signal is converted to data signal and sends to control module; Control module is used for triggering sampling, and data signal is stored in the memory cell, and the GPS unit is used for per second and provides a time pulse and carry out synchronously.
Geophone comprises built-in sensors and outer sensor, and built-in sensors is used for firm hard formation, and outer sensor is used for broken ground.
Analog-digital converter is one one group of analog-to-digital conversion plate.
Control module comprises quartz crystal, and it is 2000 pulses that quartz crystal is used for dividing 1 second time equally, triggers sampling.
Also comprise wireless transmitting unit, wireless transmitting unit is connected with control module, is used for data signal is sent.
Also comprise power subsystem, be used for power supply being provided to device.
A kind of method that detects pressure break and flood effectiveness and predominant direction thereof may further comprise the steps:
A, control module trigger geophone and sample;
B, geophone are gathered the microseism signal and are sent to analog-digital converter;
C, analog-digital converter convert the microseism signal data signal to and send to control module;
D, control module are stored in data signal in the memory cell.
In the steps A, GPS unit per second provides a time pulse, and it is 2000 pulses that the quartz crystal of control module is divided 1 second time equally, triggers sampling; Among the step B, adopt 21 samplings, significance bit is not less than 16,1000 times of multiplication factors, and sensitivity is 0.05 microvolt, amplitude sensitivity is 3 millivolts.
Analog-digital converter adopts one group of analog-to-digital conversion plate together among the step C.
Among the step D, utilize GPS in the storage data signal, per second inserts a lock in time.
Adopted technical scheme of the present invention; Reduced distorted signals, improved the quality of data, can a circumstantial evidence that provided by monitoring materials itself be provided for oil field compression fracture crack, flood front monitoring result; Pressure break, flood effectiveness both can be used for judging; Can judge the correctness of pressure break, flood front direction again, solve an important difficult problem in microseism monitoring field, promote the development of microseism monitoring technology.
Description of drawings
Fig. 1 is the structural representation that detects the device of pressure break and flood effectiveness and predominant direction thereof in the specific embodiment of the invention.
Fig. 2 is the flow chart that detects pressure break and flood effectiveness and predominant direction thereof in the specific embodiment of the invention.
The specific embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing and through the specific embodiment.
Basic thought of the present invention is by the seismograph station monitoring microseism of ground (or shallow embedding), if make the focal mechanism result, then both can judge pressure break, flood effectiveness, can detect the reliability of fracturing fracture direction, flood front predominant direction again.
The focal mechanism character of being made by microseismograms can be divided into two big types: opening property focal mechanism and the property sheared mechanism.Opening property focal mechanism is represented in pressure break, the injecting process, occurs new seam in the fracture propagation; The property sheared focal mechanism representes in pressure break, the injecting process that fracture propagation is along old seam.
Pressure break hopes to occur new seam, monitors a property focal mechanism, and the expression fracturing effect is good; Water filling is hoped along old seam, monitors the property sheared focal mechanism, and the expression flood effectiveness is good.
Focal mechanism can provide two nodal sections, wherein an expression fractuer direction.Because the focal mechanism result does not rely on underground rate pattern, and is only relevant with the monitor station station location.If the nodal section direction is gone along man-made fracture direction that monitors or flood front direction, just can prove that the direction that monitoring provides is correct.Make focal mechanism by the microseism monitoring result, epoch making significance is arranged for the applicability that improves the microseism monitoring technology.
Obtain the seismic waveform that to differentiate by monitoring result; It is the prerequisite of making the focal mechanism result; The seismic waveform microseism waveform how from ground monitoring, to obtain differentiating is a key of implementing this technology, and raising monitoring level, rational instruments design are the only ways that records the seismic waveform that can differentiate.
Fig. 1 is the structural representation that detects the device of pressure break and flood effectiveness and predominant direction thereof in the specific embodiment of the invention.As shown in Figure 1; The device of this detection pressure break and flood effectiveness and predominant direction thereof comprises geophone 101, analog-digital converter 102, control module 103, memory cell 104, GPS unit 105, wireless transmitting unit 106 and power subsystem 107; Geophone is connected with analog-digital converter, and control module is connected with wireless transmitting unit with analog-digital converter, memory cell, GPS unit respectively.
Wherein geophone comprises built-in sensors and outer sensor, and built-in sensors is used for firm hard formation, and outer sensor is used for broken ground, is used to gather the microseism signal and sends to analog-digital converter.
Analog-digital converter is one one group of analog-to-digital conversion plate, and the microseism signal is converted to data signal and sends to control module.
Control module comprises quartz crystal, and it is 2000 pulses that quartz crystal is used for dividing 1 second time equally, triggers sampling, and the data signal that receives is stored in the memory cell.
The GPS unit is used for per second and provides a time pulse and carry out synchronously.
Wireless transmitting unit sends data signal.
Power subsystem is used for to device power supply being provided.
Fig. 2 is the flow chart that detects pressure break and flood effectiveness and predominant direction thereof in the specific embodiment of the invention.As shown in Figure 2, this flow process may further comprise the steps:
GPS unit per second provides a time pulse; Be equivalent to the synchronous once sampling time in each road of per second; It is 2000 pulses that the quartz crystal of control module is divided 1 second time equally; Trigger sampling, guaranteed to be placed on the synchronism of the geophone sampling of diverse location, for then being that the hypocentral location inverting of parameter provides reliable assurance.
Geophone comprises built-in sensors and outer sensor: firm hard formation, use built-in sensors; Broken ground uses outer sensor; On-the-spot two cover sensors can exchange, so that the seismic signal of Different Strata is distributed in the range of sensitivity of design, the record seismic signal is complete.When using outer sensor, adopt seismic sensor shallow embedding method, more shallow embedding seismographic station is used in the interference of avoiding ground noise jamming, particularly air to flow, can guarantee to remember quality waveform preferably with enough seismographic stations.Substation adopts vertical geophone, meets the characteristics of P ripple vertical ground vibration, improves the incidence wave amplitude, has considered the sensor distribution method of firm hard formation and broken ground so respectively, has taken into full account the influence of formation mechanical property.
Geophone adopts 21 samplings, and significance bit is not less than 16,1000 times of multiplication factors, and sensitivity is 0.05 microvolt, can remember the seismic signal first motion, amplitude sensitivity is 3 millivolts, guarantees not amplitude limit of seismic signal, can remember the microseism signal of complete display.
Analog-digital converter adopts one group of analog-to-digital conversion plate together.Guarantee the time precision and the quality of data of sampling.And the multiple tracks sampling is after triggering sampling, and sampling successively in each road, can make the data life period that should get into computer simultaneously poor.
For this reason, each substation edits the clock system of oneself with carrying GPS, in the storage data rows, utilizes GPS in the storage data signal, and per second inserts a lock in time, the time synchronized property when having guaranteed to analyze.Worked out data automatic time synchronizing software for this reason, realized that substation preserves data respectively, the imagination of back Synchronous Processing data becomes complete, as can to analyze data with automatic synchronizing software playback disposal data.
In the time of can certainly controlling without GPS, but set up special time service platform control substation sampling, the storage of our station record our station.
Also can not adopt simultaneously the storage of our station record our station, but adopt high-quality, high-speed transmission technology data to be reached the main website storage and uniform through wireless transmitting unit.
The above; Be merely the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with this technological people in the technical scope that the present invention disclosed; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. device that detects pressure break and flood effectiveness and predominant direction thereof; It is characterized in that comprise geophone, analog-digital converter, control module, memory cell and GPS unit, geophone is connected with analog-digital converter; Control module is connected with analog-digital converter, memory cell and GPS unit respectively; Wherein geophone is used to gather the microseism signal and sends to analog-digital converter, and analog-digital converter is used for the microseism signal is converted to data signal and sends to control module, and control module is used for triggering sampling; And data signal is stored in the memory cell, the GPS unit is used for per second and provides a time pulse and carry out synchronously.
2. a kind of device that detects pressure break and flood effectiveness and predominant direction thereof according to claim 1 is characterized in that geophone comprises built-in sensors and outer sensor, and built-in sensors is used for firm hard formation, and outer sensor is used for broken ground.
3. a kind of device that detects pressure break and flood effectiveness and predominant direction thereof according to claim 1 is characterized in that, analog-digital converter is one one group of analog-to-digital conversion plate.
4. a kind of device that detects pressure break and flood effectiveness and predominant direction thereof according to claim 1 is characterized in that control module comprises quartz crystal, and it is 2000 pulses that quartz crystal is used for dividing 1 second time equally, triggers sampling.
5. a kind of device that detects pressure break and flood effectiveness and predominant direction thereof according to claim 1 is characterized in that also comprise wireless transmitting unit, wireless transmitting unit is connected with control module, is used for data signal is sent.
6. a kind of device that detects pressure break and flood effectiveness and predominant direction thereof according to claim 1 is characterized in that, also comprises power subsystem, is used for to device power supply being provided.
7. a method that detects pressure break and flood effectiveness and predominant direction thereof is characterized in that, may further comprise the steps:
A, control module trigger geophone and sample;
B, geophone are gathered the microseism signal and are sent to analog-digital converter;
C, analog-digital converter convert the microseism signal data signal to and send to control module;
D, control module are stored in data signal in the memory cell.
8. a kind of method that detects pressure break and flood effectiveness and predominant direction thereof according to claim 7; It is characterized in that in the steps A, GPS unit per second provides a time pulse; It is 2000 pulses that the quartz crystal of control module is divided 1 second time equally, triggers sampling; Among the step B, adopt 21 samplings, significance bit is not less than 16,1000 times of multiplication factors, and sensitivity is 0.05 microvolt, amplitude sensitivity is 3 millivolts.
9. a kind of method that detects pressure break and flood effectiveness and predominant direction thereof according to claim 7 is characterized in that, analog-digital converter adopts one group of analog-to-digital conversion plate together among the step C.
10. a kind of method that detects pressure break and flood effectiveness and predominant direction thereof according to claim 7 is characterized in that, among the step D, utilizes GPS in the storage data signal, and per second inserts a lock in time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105344534A CN102465698A (en) | 2010-11-03 | 2010-11-03 | Device and method for detecting effects and advantage directions of fracturing and water flooding |
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| CN2010105344534A CN102465698A (en) | 2010-11-03 | 2010-11-03 | Device and method for detecting effects and advantage directions of fracturing and water flooding |
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| CN102465698A true CN102465698A (en) | 2012-05-23 |
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| CN2010105344534A Pending CN102465698A (en) | 2010-11-03 | 2010-11-03 | Device and method for detecting effects and advantage directions of fracturing and water flooding |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386193A (en) * | 2018-02-02 | 2018-08-10 | 陕西煤业化工技术研究院有限责任公司 | A kind of hard integrality top plate chemically expansible pressure break pressure relief method in end |
| CN110161566A (en) * | 2019-01-23 | 2019-08-23 | 北京创世博鸿科技发展有限公司 | Re-injection well water forward edge monitoring method based on microseismic |
| CN110942610A (en) * | 2019-12-10 | 2020-03-31 | 大连理工大学 | Intelligent rock microseismic acquisition and data wireless transmission system |
| CN111101917A (en) * | 2019-12-20 | 2020-05-05 | 神华新疆能源有限责任公司 | Coal seam hydraulic fracturing combined resonance gas extraction method and hole packer |
Citations (2)
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| CN1912348A (en) * | 2006-08-11 | 2007-02-14 | 成云海 | Mounting method for shallow hole microseismic monitoring sensor of coal mine deep well |
| CN101833113A (en) * | 2010-04-21 | 2010-09-15 | 长春锐利科技有限公司 | Method for monitoring oil well fracturing microseismic ground-borehole crack |
-
2010
- 2010-11-03 CN CN2010105344534A patent/CN102465698A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1912348A (en) * | 2006-08-11 | 2007-02-14 | 成云海 | Mounting method for shallow hole microseismic monitoring sensor of coal mine deep well |
| CN101833113A (en) * | 2010-04-21 | 2010-09-15 | 长春锐利科技有限公司 | Method for monitoring oil well fracturing microseismic ground-borehole crack |
Non-Patent Citations (1)
| Title |
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| 王爱国: "微地震监测与模拟技术在裂缝研究中的应用", 《中国博士学位论文全文数据库（基础科学辑）》, 15 July 2009 (2009-07-15) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108386193A (en) * | 2018-02-02 | 2018-08-10 | 陕西煤业化工技术研究院有限责任公司 | A kind of hard integrality top plate chemically expansible pressure break pressure relief method in end |
| CN110161566A (en) * | 2019-01-23 | 2019-08-23 | 北京创世博鸿科技发展有限公司 | Re-injection well water forward edge monitoring method based on microseismic |
| CN110942610A (en) * | 2019-12-10 | 2020-03-31 | 大连理工大学 | Intelligent rock microseismic acquisition and data wireless transmission system |
| CN111101917A (en) * | 2019-12-20 | 2020-05-05 | 神华新疆能源有限责任公司 | Coal seam hydraulic fracturing combined resonance gas extraction method and hole packer |
| CN111101917B (en) * | 2019-12-20 | 2022-08-30 | 神华新疆能源有限责任公司 | Coal seam hydraulic fracturing combined resonance gas extraction method and hole packer |
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Application publication date: 20120523 |