Patent Document ID: 10132945
Application ID: 15324284
Patent Flag: 1

Claim One:
1. A method for characterising evolution of a subsurface volume comprising at least one of a hydrocarbon reservoir and well system, said method comprising: obtaining, via at least one acoustic source and an array of acoustic receivers, a first survey of the subsurface volume with a first set of seismic traces corresponding to a first time; obtaining, via the at least one acoustic source and the array of acoustic receivers, a second survey of the subsurface volume with a second set of seismic traces corresponding to a second time; constructing an analytic filter operable to shift at least one seismic trace in dependence of time shift, wherein said analytic filter comprises an all-pass plane wave destruction filter parameterized by time shifts and is a time domain analogue of a frequency domain phase shift operator operable to impose a constant time shift to a plane wave model of a seismic trace; performing an inversion to obtain time shift estimates for a model parameter such that said analytic filter aligns said first survey and said second survey; and wherein said time shift estimates characterize the evolution of the subsurface volume comprising at least one of a hydrocarbon reservoir and well system over a time period between the first time and the second time.