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Method of constraining an inversion in the characterisation of the evolution of a subsurface volume
Method of constraining an inversion in the characterisation of the evolution of a subsurface volume
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机译：限制地下体积演化特征反演的方法
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摘要
Disclosed is a method for characterising the evolution of a subsurface volume over time. The method comprises providing a first and second surveys of the reservoir with a first and second sets of seismic traces and performing an inversion to obtain estimates of changes having occurred between said first time and said second time in terms of at least one model parameter. The subsurface volume is divided into regions according to a high order discrete classification attributed in accordance with the region's geologic characteristics, and said inversion is constrained per region of subsurface volume. The regions of subsurface volume may be geological layers. The high order discrete classification may be facies. The model parameter may be one of time strain, time shift of relative velocity change. The inversion may comprise inverting for coefficients of a regional function at each spatial location within a region.
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