井间地震资料测井约束层析成像

Logging Constrained Crosswell Seismic Tomography

利用井间地震资料进行层析成像,由于受观测角的限制,其成像过程具有很强的不稳定性。为了提高成像过程的稳定性,本文将测井资料引入到反演过程中,利用测井资料约束井间地震反演成像过程。采用假设模型进行数值模拟和反演实验,并与无约束反演方法进行对比实验,多种反演结果对比表明,测井约束反演方法改善了层析成像过程的稳定性,提高了成像结果的精度。

Under the limitation of survey azimuth, the tomography process of crosswell seismic data is unstable. To improve the stability of imaging process, the well log was introduced into the inversion process and is used to constrain crosswell seismic inversion. The numerical simulation and inversion tests are made on the assumptive model, and the comparative tests between constrained inversion and no constrained inversion are also made. The multiple inversion results show logging constrained inversion improve the stability of tomography process and the precision of imaging result.