Arrival picking and global refinement for microseismic events based on waveform similarity
文献类型：期刊论文
| 作者 | Yu ZhiChao1; Tan YuYang3; Zhai Shang1; Feng FangFang2; He Chuan1; Hou GuiTing1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 62期号:12页码:4782-4793 |
| ISSN号 | 0001-5733 |
| 关键词 | Microseismic monitoring Multi-trace cross-correlation Arrival picking Global refinement Consistency |
| DOI | 10.6038/cjg2019M0296 |
| 英文摘要 | Arrival picking of microseismic events is a fundamental step in processing of downhole microseismic monitoring data. The errors in the arrival times may lead to significant bias in the estimate of hypocenter locations and thus the interpretation of hydraulic fractures. Due to the difference of energy, focal mechanisms, propagation paths and the presence of ambient noise, the arrival results show significant distinction with the same method in conventional picking workflow. We have developed a new method based on waveform similarity in arrival picking and refinement to increase the consistency of arrival picking criteria. This method performs moveout correction for the microseismic records based on cross -correlation functions, the records after moveout correction are superposed and the arrival times are obtained by pick the arrivals for the stack traces. Global refinement is applied to the stack waveforms of different events to calculate the interevent arrival time difference. Finally, the arrival results of each microseismic events can be obtained by adding the arrival information and relative time differences. The proposed method considers the arrival data as a whole and compares recordings from different events, which can overcome the shortcoming of the conventional algorithms in terms of the identic picking criteria. The processing results of microseismic events recorded by borehole array indicate the method can improve the accuracy of the arrival and event location results compared to the traditional processing method. |
| WOS关键词 | CROSS-CORRELATION ; 1ST ARRIVAL ; PHASE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000500940600023 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95779]  |
| 专题 | 地质与地球物理研究所_其他部门 |
| 通讯作者 | Hou GuiTing |
| 作者单位 | 1.Peking Univ, Sch Earth & Space Sci, Inst Oil & Gas, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu ZhiChao,Tan YuYang,Zhai Shang,et al. Arrival picking and global refinement for microseismic events based on waveform similarity[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(12):4782-4793. |
| APA | Yu ZhiChao,Tan YuYang,Zhai Shang,Feng FangFang,He Chuan,&Hou GuiTing.(2019).Arrival picking and global refinement for microseismic events based on waveform similarity.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(12),4782-4793. |
| MLA | Yu ZhiChao,et al."Arrival picking and global refinement for microseismic events based on waveform similarity".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.12(2019):4782-4793. |
入库方式： OAI收割
来源：地质与地球物理研究所
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