摘要：The evaluation of radial heterogeneities within formations plays an important role in oil and gas exploration and exploitation. Dipole acoustic well logging data are widely used to invert radial shear velocity profiles, for which efficient dispersion analysis algorithms and radial profile inversion algorithms constitute fundamental issues. A direct parametric inversion method is, therefore, proposed in this letter, and a phase-based dispersion method is employed to calculate the dispersion curves of measured dipole acoustic data. The accuracy and computational efficiency of the inversion can be simultaneously guaranteed by using the proposed dispersion analysis method. An exponential radial profile function with three parameters, namely, the relative change in the shear modulus, the decaying parameter of the exponential function, and the radial extent of the perturbation zone, is used to describe alterations in formation shear wave velocities. Formations with different alteration characteristics can be expressed effectively using this proposed exponential function. The cost function is then calculated in terms of the three exponential function parameters and the real data dispersion curve. After the three parameters are inverted by finding the minimum value of the cost function, the radial shear wave velocity profile can be expressed using the exponential function. Finally, processing results using synthetic data confirm the efficiency of the proposed algorithm.
© 2004-2012 IEEE.

ISSN号：1545-598X

卷、期、页：v 15,n 6,p828-832

发表日期：2018-06-01

期刊分区（SCI为中科院分区）：三区

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

发表期刊名称：IEEE GEOSCIENCE AND REMOTE SENSING LETTERS

参与作者：张阔

第一作者：王兵

论文类型：期刊论文

论文概要：王兵,张阔，Direct Inversion Algorithm for Shear Velocity Profiling in Dipole Acoustic Borehole Measurements，IEEE GEOSCIENCE AND REMOTE SENSING LETTERS，2018，v 15,n 6,p828-832

论文题目：Direct Inversion Algorithm for Shear Velocity Profiling in Dipole Acoustic Borehole Measurements