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arXiv 1408.0645physics.geo-ph
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基于全变差正则化的时移地震资料稳健联合全波形反演

Robust joint full-waveform inversion of time-lapse seismic data sets with total-variation regularization

Musa Maharramov, Biondo Biondi

摘要:

提出了一种利用全波形反演(FWI)从时移地震勘探数据重建地下速度模型变化的技术。该技术是基于同时反演多个调查年份,与模型差异正则化使用总变差(TV)的插值。我们比较了新的电视正则化的时间推移FWI与$L_2$正则化的联合反演在我们早期的工作中提出的,使用合成数据集,表现出调查的可重复性问题。结果表明,所提出的TV正则化联合反演的替代方法恢复生产引起的模型变化,是由于流体替代和地质力学效应的明显优势。

英文摘要:

We present a technique for reconstructing subsurface velocity model changes from time-lapse seismic survey data using full-waveform inversion (FWI). The technique is based on simultaneously inverting multiple survey vintages, with model difference regularization using the total variation (TV) seminorm. We compare the new TV-regularized time-lapse FWI with the $L_2$-regularized joint inversion proposed in our earlier work, using synthetic data sets that exhibit survey repeatability issues. The results demonstrate clear advantages of the proposed TV-regularized joint inversion over alternatives methods for recovering production-induced model changes that are due to both fluid substitution and geomechanical effects.

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