Full waveform inversion velocity guided first arrival picking
AssigneesSaudi Arabian Oil Company, Aramco Overseas Company B.V.
InventorsYoung Seo Kim, Adam J. Fox, Krzysztof K. Sliz, Tong W. Fei, Jewoo Yoo
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Abstract
A method of determining an arrival-time of a first seismic event in a seismic data set including, obtaining the seismic data set and an initial seismic velocity model, and determining an updated seismic velocity model based on the seismic data set. Furthermore, the method includes determining a simulated arrival-time of the first seismic event based on the updated seismic velocity model and defining a predicted time-window based on the simulated arrival-time of the first seismic event, and picking the arrival-time of the first seismic event in the seismic data set based on the predicted time-window.
Claims20
A method of determining an arrival-time of a first seismic event in a seismic data set, comprising:
- obtaining, by a computer processor, the seismic data set;
- obtaining, by a computer processor, an initial seismic velocity model;
- determining, by a computer processor, an updated seismic velocity model based, at least in part, on the seismic data set;
- determining, by a computer processor, a simulated arrival-time of the first seismic event based, at least in part, on the updated seismic velocity model;
- defining, by a computer processor, a predicted time-window based, at least in part, on the simulated arrival-time of the first seismic event;
- and
- picking, by a computer processor, the arrival-time of the first seismic event in the seismic data set based, at least in part, on the predicted time-window.
A non-transitory computer readable medium storing instructions executable by a computer processor, the instructions comprising functionality for:
- obtaining, a seismic data set;
- obtaining, an initial seismic velocity model;
- determining, an updated seismic velocity model based, at least in part, on the seismic data set;
- determining, the simulated arrival-time of the first seismic event based, at least in part, on the updated seismic velocity model;
- defining, a predicted time-window based, at least in part, on the simulated arrival-time of the first seismic event;
- and
- picking, the arrival-time of the first seismic event in the seismic data set based, at least in part, on the predicted time-window.
Dependencies are inferred from the claim text.