
基本信息:
- 专利标题: 通过与偏移距相关的弹性FWI的多参数反演
- 专利标题(英):Multi-parameter inversion through offset dependent elastic fwi
- 申请号:CN201480031659.1 申请日:2014-05-07
- 公开(公告)号:CN105308479A 公开(公告)日:2016-02-03
- 发明人: 王可 , S·K·拉杂拉拖斯
- 申请人: 埃克森美孚上游研究公司
- 申请人地址: 美国得克萨斯
- 专利权人: 埃克森美孚上游研究公司
- 当前专利权人: 埃克森美孚上游研究公司
- 当前专利权人地址: 美国得克萨斯
- 代理机构: 中国国际贸易促进委员会专利商标事务所
- 代理人: 李玲
- 优先权: 61/827,474 2013.05.24 US
- 国际申请: PCT/US2014/037122 2014.05.07
- 国际公布: WO2014/189679 EN 2014.11.27
- 进入国家日期: 2015-11-23
- 主分类号: G01V1/30
- IPC分类号: G01V1/30
Method for multi-parameter inversion using elastic inversion. This method decomposes data into offset/angle groups and performs inversion on them in sequential order. This method can significantly speed up convergence of the iterative inversion process, and is therefore most advantageous when used for full waveform inversion (FWI). The present inventive approach draws upon relationships between reflection energy and reflection angle, or equivalently, offset dependence in elastic FWI. The invention uses recognition that the amplitudes of small angle (near offset) reflections are largely determined by acoustic impedance alone (1), independent for the most part of Vp/Vs. Large angle (middle and far offset) reflections are affected by Ip, Vp/Vs (2) and other earth parameters such as density (3) and anisotropy. Therefore, the present inventive method decomposes data into angle or offset groups in performing multi-parameter FWI to reduce crosstalk between the different model parameters being determined in the inversion.
公开/授权文献:
- CN105308479B 通过与偏移距相关的弹性FWI的多参数反演 公开/授权日:2017-09-26