Patent ID: 11965999
Assignee: TOTALENERGIES ONETECH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A computer-implemented processing method for processing a seismic image comprising seismic values obtained from seismic measurements performed on a geological formation, the processing method comprising:
determining a seismic dip image based on the seismic image, said seismic dip image comprising local seismic dips representative of the local gradient of the seismic values of the seismic image;
initializing a seismic horizon surface modeled using a combination of spline functions;
obtaining a set of setpoints of the seismic image; and
iteratively modifying coefficients used for combining the spline functions, thereby iteratively modifying the seismic horizon surface, to progressively increase alignment between local orientations of the seismic horizon surface and the corresponding local seismic dips while constraining the seismic horizon surface to approximate the set of setpoints using a spline quasi-interpolant operator, until a predetermined stop criterion is satisfied,
wherein approximating the set of setpoints using a spline quasi-interpolant operator comprises selecting a subset of spline functions among the spline functions used for modeling the seismic horizon surface, wherein the spline quasi-interpolant operator is used to determine the coefficients associated to the subset of spline functions.