1887

Abstract

An inversion scheme that solves for reservoir pressure and fluid saturation changes from time-lapse pre-stack seismic attributes and post-stack seismic timeshifts is presented. It makes use of three equations expressing the production induced changes as a function of changes in zero-offset and gradient reflectivity and of compressional wave time-shifts. The equations related to the AVO (amplitude-versus-offset) response are a revised form of Landro's (2001) equations. The inversion scheme has been successfully tested on a synthetic reservoir where seismic data have been modeled before and after two years production. The results show that changes in fluid properties can be approximated with fairly high accuracy.

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/content/papers/10.3997/2214-4609.20147658
2008-06-09
2020-05-30
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20147658
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