Microseismic focal mechanism inversion in frequency domain based on general dislocation point model
文献类型：期刊论文
| 作者 | Han, Li1,2,3; Yao Zhenxing2 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 61期号:3页码:905-916 |
| 关键词 | Microseismic monitoring Focal mechanism General dislocation point model Shear dislocation Tensile dislocation Inversion in frequency domain |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2018L0237 |
| 文献子类 | Article |
| 英文摘要 | Fracture directionality, scale and stress state of hydraulic fracturing areas are extremely important for the exploration of unconventional oil and gas resources. These information can be obtained from the study of microseismic focal mechanisms. For microseismic events, double-couple or moment tensor models are usually used in focal mechanism inversion. In this study, a "Shear & Tensile" general dislocation point model is presented to describe the source of microearthquakes. Based on this model, we develop an approach to calculate microseismic focal mechanism using amplitude spectra fitting and simulated annealing technique in frequency domain. The new method takes account of full waveform information including phase and polarities of first P wave arrivals and can provide dislocation length along each direction as well as common source parameters (strike, dip and rake angles) in the study area. The synthetic tests on surface and borehole network and applications to real data show that our method is robust and efficient. We also find that shear and tensile dislocation lengths are independent of stress drop and can be used as new parameters for quantitative evaluation of hydraulic fracturing. |
| WOS关键词 | MOMENT TENSOR INVERSION ; SOURCE PARAMETERS ; EARTHQUAKES ; SEISMICITY ; RESOLUTION ; SPECTRA ; HYDROFRACTURE ; STIMULATION ; SEISMOGRAMS ; STRESS |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000428609900009 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/83128]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Han, Li |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, 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 |
| 推荐引用方式 GB/T 7714 | Han, Li,Yao Zhenxing. Microseismic focal mechanism inversion in frequency domain based on general dislocation point model[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(3):905-916. |
| APA | Han, Li,&Yao Zhenxing.(2018).Microseismic focal mechanism inversion in frequency domain based on general dislocation point model.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(3),905-916. |
| MLA | Han, Li,et al."Microseismic focal mechanism inversion in frequency domain based on general dislocation point model".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.3(2018):905-916. |
入库方式： OAI收割
来源：地质与地球物理研究所
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