Patent ID: 11965996
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of generating a low frequency model of a subterranean formation for performing a seismic waveform inversion, the method comprising:
receiving, at a processor from a first seismometer, seismic data for a first region of the subterranean formation, the seismic data representing a propagation of seismic waves within the first region;
receiving, at the processor from a well log instrument, well log data of one or more wells located at the first region;
determining, by the processor based on the received seismic data of the first region, one or more relative layer attributes of the first region, the one or more relative layer attributes representing one or more relative elastic properties of one or more formation layers of the first region;
determining, by the processor based on the one or more relative layer attributes of the first region, one or more first input values for a machine learning model;
determining, by the processor based on the received well log data, one or more second input values for the machine learning model;
generating, based on the one or more first input values and the one or more second input values, by executing the machine learning model by the processor, a relative low frequency model for the first region;
extrapolating, by executing the machine learning model by the processor, the first relative low frequency model to a second region of the subterranean formation, the second region being distinct from the first region;
updating, based on the extrapolating, by executing the machine learning model by the processor, the relative low frequency model to span the first region and the second region;
scaling, by the processor based on the well log data of the first region, the relative low frequency model;
generating, by the processor based on the scaling, a scaled low frequency model representing one or more scaled elastic properties of the one or more formation layers of the first region and one or more formation layers of the second region; and
performing, by the processor based on the scaled low frequency model, the seismic waveform inversion.