Patent ID: 11880009
Assignee: CGG SERVICES SAS
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A non-transitory computer readable recording medium storing executable codes that when executed on a computer make the computer perform a method for monitoring targeted natural resources inside an underground formation, the method comprising:
obtaining a baseline dataset and a monitor dataset acquired during seismic surveys performed at different times over the underground formation;
generating a synthetic baseline dataset and a synthetic monitor dataset corresponding to the baseline dataset and the monitor dataset, the synthetic baseline dataset and the synthetic monitor dataset being generated using a baseline model and a monitor model of the underground formation, respectively;
calculating a joint inversion time-lag cost function with a target regularization that includes a total variation, TV, norm and a model difference norm;
updating the baseline model and the monitor model by minimizing the joint inversion time-lag cost function with the target regularization; and
generating an image of the underground formation for identifying changes of location and/or volume of the targeted natural resources within the underground formation, between the different times when the baseline dataset and the monitor dataset were acquired, based on the updated baseline model and the updated monitor model.