Method of determining parameter from sparse measurement data
AssigneeSchlumberger Technology Corporation
InventorsKhaled Hadj-Sassi, Jean-Marc Donadille
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Abstract
A method of simultaneously determining multiple parameters or a parameter distribution characterizing material properties of a volume under investigation using an inversion process of sparse measurements is described including the step of defining an initial model of the volume and modifying the initial model by matching the multiple parameters or parameter distribution with the measurements using alternatingly an iterative inversion method and a probabilistic inversion method, and determining the multiple parameters or parameter distribution after one or more iterations of the alternating inversions.
Claims8
A method of simultaneously determining multiple parameters or a parameter distribution characterizing material properties of a volume of a subterranean formation under investigation using an inversion process of sparse measurements, the method comprising:
- performing a potential field survey of the volume of the subterranean formation using sensors located around or within the volume;
- defining a model of said volume and modifying said model by matching said multiple parameters or parameter distribution characterizing material properties with said measurements of the effects of the potential field using alternatingly an iterative inversion method and a probabilistic inversion method;
- and
- determining said multiple parameters or parameter distribution characterizing material properties after one or more iterations of said alternating inversions wherein a pseudo-converged model obtained after one or more iterations of an inversion is transformed and the transformed model of the inversion is used as an input model for a successive inversion.
Dependencies are inferred from the claim text.