摘要：A key technical challenge facing borehole acoustic reflection imaging is the uncertainty concerning the azimuth (i.e. the direction about the axis of the borehole) from which a reflected event arrives. In generating images of formation boundaries near the borehole this is referred to as azimuthal ambiguity. The phenomenon is comparable to the 3D out-of-plane effects encountered in imaging of 2D surface data. Systems with multiple receivers (e.g., the sonic scanner tool developed by Schlumberger) acquire sufficient information to uniquely image reflected wave energy at its correct azimuth. However, a full use of this information requires the wave data to be analyzed in the context of 3D, two-way elastic wave propagation and a suitable anisotropic medium. Here we summarize the development of a 3D anisotropic reverse time migration imaging scheme to sonic data, and demonstrate that within this imaging formulation azimuthal ambiguity is resolved for data from both monopole and dipole sources.
© 2019 Elsevier B.V.

ISSN号：0926-9851

卷、期、页：v 166,p103-111

发表日期：2019-07-01

期刊分区（SCI为中科院分区）：无

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：JOURNAL OF APPLIED GEOPHYSICS

参与作者：李军孝,Innanen, Kristopher A.,陶果

第一作者：王兵

论文类型：期刊论文

论文概要：李军孝,Innanen, Kristopher A.,王兵,陶果，Azimuth ambiguity elimination for borehole imaging using 3D borehole RTM scheme，JOURNAL OF APPLIED GEOPHYSICS，2019，v 166,p103-111

论文题目：Azimuth ambiguity elimination for borehole imaging using 3D borehole RTM scheme