Identifying reservoir depletion patterns from production-induced deformations with applications to seismic imaging

Identifying reservoir depletion patterns from production-induced deformations with applications to seismic imaging

Musa Maharramov

Abstract:

The ultimate objective of our research is to study the feasibility of using subsidence measurements for the regularization of linearized waveform inversion of time-lapse data sets, and for differential travel-time tomography. In this paper, we focus on developing a robust framework for inverting pore pressure change in a production reservoir from partial displacement or subsidence data, and on estimating subsurface displacements from the inverted pore pressure change. We discuss potential applications of the resulting displacement fields to the estimation of production-induced change of seismic velocities and impedance. Sensitivity of the proposed framework to the uncertainty and spatial heterogeneity of the poroelastic subsurface parameters is discussed as well.