Institutional Repository of Key Laboratory of Petroleum Resource Research, Chinese Academy of Sciences
| Accuracy analysis of borehole observation microseismic location based on time reverse imaging | |
Cheng Qian1,2,3; Wei Wei1,2,3 ; Fu LiYun4
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| 2022-08-01 | |
| Source Publication | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
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| ISSN | 0001-5733 |
| Volume | 65Issue:8Pages:3213-3228 |
| Abstract | Microseismic location is a key step in exploration and development of unconventional and low permeability reservoirs or safety monitoring of underground engineering. Its accuracy is an important basis for realizing real-time characterization of reservoirs and engineering disaster monitoring and early warning. Due to the characteristics of weak energy, high frequency and low signal-to-noise ratio of microseismic signals, the accuracy of microseismic location is easily affected by the location of the acquisition and observation system, especially in the downhole confined space and environment with high temperature and pressure. Based on this, this paper proposes an analysis method for the location accuracy of downhole microseismic acquisition based on time reverse imaging, which can quantitatively predict the location bias and uncertainty in horizontal and depth directions of the actual acquisition and observation system layout scheme. Different from traditional location accuracy analysis methods, this method is based on waveform rather than travel time and is suitable for complex and inhomogeneous media. Meanwhile, the influence of SNR and focal mechanism on location accuracy is considered. The application results in both homogeneous and inhomogeneous media show that the proposed method can effectively evaluate the expected location accuracy of the microseismic acquisition scheme, and then feedback the design of acquisition parameters to improve the microseismic location effect in complex media from the source of data acquisition. |
| Keyword | Microseismic Acquisition design Location accuracy Time reverse imaging |
| DOI | 10.6038/cjg2022P0237 |
| WOS Keyword | MINING-INDUCED SEISMICITY ; ACQUISITION GEOMETRIES ; EARTHQUAKE LOCATION ; WAVE PROPAGATION ; FRACTURE SYSTEM ; FIELD ; HYPOCENTER ; ALGORITHM ; MEDIA |
| Language | 英语 |
| WOS Research Area | Geochemistry & Geophysics |
| WOS Subject | Geochemistry & Geophysics |
| WOS ID | WOS:000836816500031 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/108403 |
| Collection | 油气资源研究院重点实验室 |
| Corresponding Author | Wei Wei |
| Affiliation | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.China Univ Petr East China, Key Lab Deep Oil & Gas, Qingdao 266580, Peoples R China |
| First Author Affilication | Institute of Geology and Geophysics, Chinese Academy of Sciences |
| Corresponding Author Affilication | Institute of Geology and Geophysics, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Cheng Qian,Wei Wei,Fu LiYun. Accuracy analysis of borehole observation microseismic location based on time reverse imaging[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2022,65(8):3213-3228. |
| APA | Cheng Qian,Wei Wei,&Fu LiYun.(2022).Accuracy analysis of borehole observation microseismic location based on time reverse imaging.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,65(8),3213-3228. |
| MLA | Cheng Qian,et al."Accuracy analysis of borehole observation microseismic location based on time reverse imaging".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 65.8(2022):3213-3228. |
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