CN104459824A - Device for monitoring fracturing effect of micro-earthquakes and monitoring method with device - Google Patents
Device for monitoring fracturing effect of micro-earthquakes and monitoring method with device Download PDFInfo
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- CN104459824A CN104459824A CN201410834659.7A CN201410834659A CN104459824A CN 104459824 A CN104459824 A CN 104459824A CN 201410834659 A CN201410834659 A CN 201410834659A CN 104459824 A CN104459824 A CN 104459824A
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Abstract
The invention relates to a device for monitoring the fracturing effect of micro-earthquakes. The device comprises a central control system, a dynamic monitoring assembly, a static monitoring assembly, a gamma testing instrument and a display screen. The dynamic monitoring assembly comprises a plurality of first detectors, a plurality of second detectors and casing pipes, wherein the number of the second detectors is equal to the number of the casing pipes. The static monitoring assembly comprises an ultrasonic transmitting device and an ultrasonic receiving device. A monitoring method with the device for monitoring the fracturing effect of the micro-earthquakes comprises the steps of model establishing, first gamma logging, dynamic monitoring, static monitoring, second gamma monitoring, data calculating and graph simulating. According to the device for monitoring the fracturing effect of micro-earthquakes and the monitoring method with the device, micro-earthquake events are monitored in a dynamic mode and a static mode, a gamma logging technology is combined, the three-component detectors are used for conducting component monitoring and calculating on micro-earthquake signals, measuring errors are reduced, the accuracy of data monitoring is improved, the monitoring effect is improved, and the device and the monitoring method are suitable for popularization.
Description
Technical field
The present invention relates to oil-gas field development field, particularly a kind of equipment of micro-seismic monitoring fracturing effect and monitoring method thereof.
Background technology
External conventional shale gas well waterfrac treatment Crack Monitoring mainly contains directly nearly pit shaft Crack Monitoring, down-hole micro-seismic monitoring method, tiltmeter monitoring and distributed acoustic sensing Crack Monitoring.The monitoring capability of this several Crack Monitoring method of comparative analysis and adaptability, direct nearly pit shaft fracture monitoring technique only technology as a supplement in these Fracturing Monitoring technology, down-hole microearthquake Crack Monitoring is current most widely used general, the most accurate method.
But due to complicacy and the polytrope of geological condition, to the data influence monitored comparatively greatly, the data that the equipment of prior art obtains for microearthquake Crack Monitoring cannot accurately must obtain, and effect is unsatisfactory for noise and other noises particularly largely.
Summary of the invention
The technical problem to be solved in the present invention is: in order to overcome the deficiencies in the prior art, provides a kind of equipment and monitoring method thereof of micro-seismic monitoring fracturing effect.
The technical solution adopted for the present invention to solve the technical problems is: a kind of equipment of micro-seismic monitoring fracturing effect, the dynamic monitoring assembly comprising central control system and be connected with central control system respectively, static monitoring techniques assembly, gamma tester and display screen, described dynamic monitoring assembly comprises some first detectors, some second detectors and the sleeve pipe equal with second detector quantity, each first detector is from top to bottom evenly arranged in monitor well successively, each second detector is all arranged on above sleeve pipe, and a corresponding sleeve pipe of second detector, described first detector and second detector are all connected with central control system signal, described static monitoring techniques assembly comprises ultrasonic transmission device and ultrasonic probe, ultrasonic receiver, described ultrasonic generator and ultrasonic probe, ultrasonic receiver are all electrically connected with central control system by oscillograph.
As preferably, described ultrasonic transmission device comprises a ultrasound wave transmitting probe, described ultrasonic probe, ultrasonic receiver comprises four ultrasound wave receiving transducers, and described ultrasound wave transmitting probe both sides are respectively equipped with two ultrasound wave receiving transducers, and four ultrasound wave receiving transducers are all obliquely installed.
As preferably, described second detector has four at least, and distance between four second detectors is all equal.
As preferably, described first detector and second detector are three-component seismometer.
Adopt a monitoring method for the equipment of above-mentioned micro-seismic monitoring fracturing effect, comprise the following steps:
1) model is set up: system initialization, by data input central control systems such as well seismic section, speed data, geologic interpretation section, lithological profiles, sets up the initial model of Reservoir Section;
2) first time gamma logging: in fractured well, inject radiotracer, and utilize gamma tester carry out first time monitor, the data monitored are passed to central control system;
3) dynamic monitoring: fracturing liquid is injected to internal layer, microearthquake component signal is gathered by the first detector in monitor well, then the microearthquake component signal collected is passed to central control system by first detector, gather microearthquake component signal by the second detector be arranged on sleeve pipe, then the microearthquake component signal collected is passed to central control system by second detector;
4) static monitoring techniques: stop injecting fracturing liquid, after stopping generation by dynamic monitoring assemblies monitor to micro-seismic event, central control system controls ultrasound wave transmitting probe and sends ultrasound wave, refraction and reflection is there is in ultrasound wave at crack place, four ultrasound wave receiving transducers receive from four direction there is the ultrasound wave after reflecting and reflecting, and by the ultrasonic signal that receives by oscilloscope display out, synchronously, data-signal is transferred to central processing system by four ultrasound wave receiving transducers, central processing system converts four ultrasonic signals to digital signal,
5) second time gamma logging: by gamma tester, second time monitoring is carried out to the radiotracer injected under fractured well, and the data that second time collects are passed to central control system;
6) data calculate: by the data of central control system comparison first time gamma logging, second time gamma logging, again in conjunction with the data that dynamic monitoring assembly and static monitoring techniques assembly send, according to the space distribution of event, in conjunction with pressure break curve, determine fracture spaces spread and the regularity of distribution;
7) graphic modeling: according to initial model, demonstrates the analog image in crack by display screen.
As preferably, step 2) in radiotracer activated by radioactive isotope.
As preferably, step 3) in, after micro-seismic event stops that 60s occurs, ultrasound wave transmitting probe sends ultrasound wave.
The invention has the beneficial effects as follows, the equipment of this micro-seismic monitoring fracturing effect and monitoring method thereof are monitored micro-seismic event by dynamic and static state two kinds of modes, and in conjunction with gamma logging technology, by three-component seismometer, component monitoring and calculating are carried out to microearthquake signal, reduce the impact of external noise, reduce measuring error, improve the accuracy of data monitoring, improve monitoring effect, be specially adapted to the data acquisition to the volume fracturing in shale gas exploitation, be relatively applicable to promoting.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of the equipment of micro-seismic monitoring fracturing effect of the present invention;
In figure: 1. central control system, 2. display screen, 3. first detector, 4. second detector, 5. ultrasound wave transmitting probe, 6. ultrasound wave receiving transducer, 7. oscillograph, 8. sleeve pipe, 9. monitor well, 10. gamma tester.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in Figure 1, a kind of equipment of micro-seismic monitoring fracturing effect, the dynamic monitoring assembly comprising central control system 1 and be connected with central control system 1 respectively, static monitoring techniques assembly, gamma tester 10 and display screen 2, described dynamic monitoring assembly comprises some first detectors 3, some second detectors 4 and the sleeve pipe 8 equal with second detector 4 quantity, each first detector 3 is from top to bottom evenly arranged in monitor well 9 successively, each second detector 4 is all arranged on above sleeve pipe 8, and a corresponding sleeve pipe 8 of second detector 4, described first detector 3 and second detector 4 are all connected with central control system 1 signal, described static monitoring techniques assembly comprises ultrasonic transmission device and ultrasonic probe, ultrasonic receiver, described ultrasonic generator and ultrasonic probe, ultrasonic receiver are all electrically connected with central control system 1 by oscillograph 7.
As preferably, described ultrasonic transmission device comprises a ultrasound wave transmitting probe 5, described ultrasonic probe, ultrasonic receiver comprises four ultrasound wave receiving transducers 6, and described ultrasound wave transmitting probe 5 both sides are respectively equipped with two ultrasound wave receiving transducers, 6, four ultrasound wave receiving transducers 6 and are all obliquely installed.
As preferably, described second detector 4 has four at least, and distance between four second detectors 4 is all equal.
As preferably, described first detector 3 and second detector 4 are three-component seismometer.
Adopt a monitoring method for the equipment of above-mentioned micro-seismic monitoring fracturing effect, comprise the following steps:
1) model is set up: system initialization, by data input central control systems 1 such as well seismic section, speed data, geologic interpretation section, lithological profiles, sets up the initial model of Reservoir Section;
2) first time gamma logging: in fractured well, inject radiotracer, and utilize gamma tester 10 carry out first time monitor, the data monitored are passed to central control system 1;
3) dynamic monitoring: fracturing liquid is injected to internal layer, microearthquake component signal is gathered by the first detector 3 in monitor well, then the microearthquake component signal collected is passed to central control system 1 by first detector 3, gather microearthquake component signal by the second detector 4 be arranged on sleeve pipe 8, then the microearthquake component signal collected is passed to central control system 1 by second detector 4;
4) static monitoring techniques: stop injecting fracturing liquid, after stopping generation by dynamic monitoring assemblies monitor to micro-seismic event, central control system 1 controls ultrasound wave transmitting probe 5 and sends ultrasound wave, refraction and reflection is there is in ultrasound wave at crack place, four ultrasound wave receiving transducers 6 receive from four direction there is the ultrasound wave after reflecting and reflecting, and the ultrasonic signal received is shown by oscillograph 7, synchronously, data-signal is transferred to central processing system 1 by four ultrasound wave receiving transducers 6, central processing system 1 converts four ultrasonic signals to digital signal,
5) second time gamma logging: by gamma tester 10, second time monitoring is carried out to the radiotracer injected under fractured well, and the data that second time collects are passed to central control system 1;
6) data calculate: by the data of central control system 1 comparison first time gamma logging, second time gamma logging, again in conjunction with the data that dynamic monitoring assembly and static monitoring techniques assembly send, according to the space distribution of event, in conjunction with pressure break curve, determine fracture spaces spread and the regularity of distribution;
7) graphic modeling: according to initial model, demonstrates the analog image in crack by display screen.
As preferably, step 2) in radiotracer activated by radioactive isotope.
As preferably, step 3) in, after micro-seismic event stops that 60s occurs, ultrasound wave transmitting probe 5 sends ultrasound wave.
When fractured well exists more than two mouthfuls or two mouthfuls, consider the mutual interference between signal, the ultrasound wave of different frequency can be adopted to distinguish for each fractured well, also can after the whole detection of dynamic of fractured well, Static Detection assembly is utilized to monitor one by one, monitoring time is staggered, effectively can avoid the mutual interference between signal.
Compared with prior art, the equipment of this micro-seismic monitoring fracturing effect and monitoring method thereof are monitored micro-seismic event by dynamic and static state two kinds of modes, and in conjunction with gamma logging technology, by three-component seismometer, component monitoring and calculating are carried out to microearthquake signal, reduce measuring error, improve the accuracy of data monitoring, improve monitoring effect, be applicable to promoting.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (7)
1. the equipment of a micro-seismic monitoring fracturing effect, it is characterized in that, the dynamic monitoring assembly comprising central control system (1) and be connected with central control system (1) respectively, static monitoring techniques assembly, gamma tester (10) and display screen (2), described dynamic monitoring assembly comprises some first detectors (3), some second detectors (4) and the sleeve pipe (8) equal with second detector (4) quantity, each first detector (3) is from top to bottom evenly arranged in monitor well (9) successively, each second detector (4) is all arranged on sleeve pipe (8) top, and a corresponding sleeve pipe (8) of second detector (4), described first detector (3) is all connected with central control system (1) signal with second detector (4), described static monitoring techniques assembly comprises ultrasonic transmission device and ultrasonic probe, ultrasonic receiver, described ultrasonic generator and ultrasonic probe, ultrasonic receiver are all electrically connected with central control system (1) by oscillograph (7).
2. the equipment of a micro-seismic monitoring fracturing effect, it is characterized in that, described ultrasonic transmission device comprises a ultrasound wave transmitting probe (5), described ultrasonic probe, ultrasonic receiver comprises four ultrasound wave receiving transducers (6), described ultrasound wave transmitting probe (5) both sides are respectively equipped with two ultrasound wave receiving transducers (6), and four ultrasound wave receiving transducers (6) are all obliquely installed.
3. an equipment for micro-seismic monitoring fracturing effect, is characterized in that, described second detector (4) has four at least, and distance between four second detectors (4) is all equal.
4. an equipment for micro-seismic monitoring fracturing effect, is characterized in that, described first detector (3) and second detector (4) are three-component seismometer.
5. adopt a monitoring method for the equipment of the micro-seismic monitoring fracturing effect as described in any one of claim 1-4, it is characterized in that, comprise the following steps:
1) model is set up: system initialization, by data input central control system (1) such as well seismic section, speed data, geologic interpretation section, lithological profiles, sets up the initial model of Reservoir Section;
2) first time gamma logging: in fractured well, inject radiotracer, and utilize gamma tester (10) carry out first time monitor, the data monitored are passed to central control system (1);
3) dynamic monitoring: fracturing liquid is injected to internal layer, microearthquake component signal is gathered by the first detector (3) in monitor well (9), then the microearthquake component signal collected is passed to central control system (1) by first detector (3), gather microearthquake component signal by the second detector (4) be arranged on sleeve pipe (8), then the microearthquake component signal collected is passed to central control system (1) by second detector (4);
4) static monitoring techniques: stop injecting fracturing liquid, after stopping generation by dynamic monitoring assemblies monitor to micro-seismic event, central control system (1) controls ultrasound wave transmitting probe (5) and sends ultrasound wave, refraction and reflection is there is in ultrasound wave at crack place, four ultrasound wave receiving transducers (6) receive from four direction there is the ultrasound wave after reflecting and reflecting, and the ultrasonic signal received is shown by oscillograph (7), synchronously, data-signal is transferred to central processing system (1) by four ultrasound wave receiving transducers (6), central processing system (1) converts four ultrasonic signals to digital signal,
5) second time gamma logging: by gamma tester (10), second time monitoring is carried out to the radiotracer injected under fractured well, and the data that second time collects are passed to central control system (1);
6) data calculate: by the data of central control system (1) comparison first time gamma logging, second time gamma logging, again in conjunction with the data that dynamic monitoring assembly and static monitoring techniques assembly send, according to the space distribution of event, in conjunction with pressure break curve, determine fracture spaces spread and the regularity of distribution;
7) graphic modeling: according to initial model, demonstrates the analog image in crack by display screen (2).
6. the monitoring method of the equipment of micro-seismic monitoring fracturing effect as claimed in claim 5, is characterized in that, step 2) in radiotracer activated by radioactive isotope.
7. the monitoring method of the equipment of micro-seismic monitoring fracturing effect as claimed in claim 5, is characterized in that, step 3) in, after micro-seismic event stops that 60s occurs, ultrasound wave transmitting probe (5) sends ultrasound wave.
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| CN109580451A (en) * | 2018-11-14 | 2019-04-05 | 浙江海洋大学 | A kind of bump stress monitoring method using fluorescent tracer |
| CN109580450A (en) * | 2018-11-14 | 2019-04-05 | 浙江海洋大学 | A kind of bump stress monitoring method using radioactive tracer |
| CN111487692A (en) * | 2020-04-27 | 2020-08-04 | 吉林大学 | Method for predicting seismic response characteristics and reservoir thickness of salt shale oil rhythm layer |
| CN112990629A (en) * | 2019-12-17 | 2021-06-18 | 中国石油化工股份有限公司 | Unconventional oil and gas reservoir exploitation method and system |
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| CN109580450B (en) * | 2018-11-14 | 2021-11-09 | 浙江海洋大学 | Rock burst stress monitoring method adopting radioactive tracer |
| CN112990629A (en) * | 2019-12-17 | 2021-06-18 | 中国石油化工股份有限公司 | Unconventional oil and gas reservoir exploitation method and system |
| CN112990629B (en) * | 2019-12-17 | 2024-03-29 | 中国石油化工股份有限公司 | Unconventional oil and gas reservoir exploitation method and unconventional oil and gas reservoir exploitation system |
| CN111487692A (en) * | 2020-04-27 | 2020-08-04 | 吉林大学 | Method for predicting seismic response characteristics and reservoir thickness of salt shale oil rhythm layer |
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Inventor after: Tong Kailin Inventor after: Li Rui Inventor after: Qi Liyang Inventor before: Wang Changchun Inventor before: Zhong Chuanrong Inventor before: Yang Chen Inventor before: Wang Xiuyu Inventor before: Li Ruinan Inventor before: Wang Yansheng Inventor before: Li Quan Inventor before: Liu Tianyang |
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Effective date of registration: 20181127 Address after: 618300 No. 6 East Guangdong Road, Guanghan, Deyang, Sichuan Patentee after: SICHUAN SHENGNUODI GAS ENGINEERING TECHNOLOGY SERVICE CO., LTD. Address before: 610059 1 East three road, Erxian bridge, Chenghua District, Chengdu, Sichuan Patentee before: Chengdu University of Technology |