CSEM inversion: Impact of anisotropy, data coverage, and initial models

摘要：

While 3-D inversion is a particularly effective tool for interpreting marine CSEM data, 3-D data acquisition is needed to image the resistivity structure of an anisotropic subsurface. Tests on synthetic models show resistivity artifacts when anisotropic data are forced through isotropic inversion and when offline data are excluded from anisotropic inversions. Similar artifacts appear also when the inversion starting model differs too much from the actual subsurface. As a result, inadequate attention to anisotropy or inadequate data coverage can lead directly to misinterpretation of the subsurface resistivity structure. Anisotropic imaging with good data coverage, accurate receiver orientation, and good initial resistivity models are necessary to quantitatively image resistive anomalies in an anisotropic earth.

关键词： CSEM anisotropic inversion conductivity anisotropy data coverage

作者: Charlie JING Ken GREEN Dennis WILLEN

作者单位: ExxonMobil Upstream Research Company , Houston, USA

会议类型: 国际会议

会议名称: The 19th International Workshop on Electromagnetic Induction in the Earth(第十九届国际地球电磁感应学术研讨会)

会议地点: 北京

会议语种:英文

页码: 546-551

在线出版日期: 2008-10-23（万方平台首次上网日期，不代表论文的发表时间）