Enhancement of single sensor seismic data
AssigneesSaudi Arabian Oil Company, Trofimuk Institute of Petroleum Geology and Geophysics
InventorsAndrey Bakulin, Ilya Silvestrov, Dmitry Neklyudov, Maxim Protasov, Kirill Gadylshin
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Abstract
Disclosed are methods, systems, and computer-readable medium to perform operations including: receiving prestack single sensor seismic data; representing traveltime moveout of the prestack single sensor seismic data locally as a second-order curve; calculating, using the prestack single sensor seismic data, local kinematic parameters that define the second-order curve; and performing, based in part on the local kinematic parameters, wavefield transformation on the single sensor seismic data to generate enhanced prestack single sensor seismic data.
Claims14
A method comprising:
- acquiring, using a seismic survey, prestack single sensor seismic data;
- representing traveltime moveout of the prestack single sensor seismic data locally as a second-order curve;
- calculating, using the prestack single sensor seismic data, local kinematic parameters that define the second-order curve, wherein calculating the local kinematic parameters comprises:
- estimating the local kinematic parameters on a sparse estimation grid less dense than an acquisition field grid of the prestack single sensor seismic data, wherein estimating the local kinematic parameters comprises scanning one or more trajectories along the sparse estimation grid to select a trajectory with a threshold coherency defined by a maximum value of a semblance function;
- and
- interpolating the estimated local kinematic parameters from the sparse estimation grid to a dense estimation grid;
- and
- performing, based in part on the local kinematic parameters, wavefield transformation on the single sensor seismic data to generate enhanced prestack single sensor seismic data.
A non-transitory computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:
- acquiring, using a seismic survey, prestack single sensor seismic data;
- representing traveltime moveout of the prestack single sensor seismic data locally as a second-order curve;
- calculating, using the prestack single sensor seismic data, local kinematic parameters that define the second-order curve curve, wherein calculating the local kinematic parameters comprises:
- estimating the local kinematic parameters on a sparse estimation grid less dense than an acquisition field grid of the prestack single sensor seismic data, wherein estimating the local kinematic parameters comprises scanning one or more trajectories along the sparse estimation grid to select a trajectory with a threshold coherency defined by a maximum value of a semblance function;
- and
- interpolating the estimated local kinematic parameters from the sparse estimation grid to a dense estimation grid;
- and
- performing, based in part on the local kinematic parameters, wavefield transformation on the single sensor seismic data to generate enhanced prestack single sensor seismic data.
A system, comprising:
- one or more processors;
- and
- a non-transitory computer-readable storage medium coupled to the one or more processors and storing programming instructions for execution by the one or more processors, the programming instructions instructing the one or more processors to perform operations comprising:
- acquiring, using a seismic survey, prestack single sensor seismic data;
- representing traveltime moveout of the prestack single sensor seismic data locally as a second-order curve;
- calculating, using the prestack single sensor seismic data, local kinematic parameters that define the second-order curve, wherein calculating the local kinematic parameters comprises:
- estimating the local kinematic parameters on a sparse estimation grid less dense than an acquisition field grid of the prestack single sensor seismic data, wherein estimating the local kinematic parameters comprises scanning one or more trajectories along the sparse estimation grid to select a trajectory with a threshold coherency defined by a maximum value of a semblance function;
- and
- interpolating the estimated local kinematic parameters from the sparse estimation grid to a dense estimation grid;
- and
- performing, based in part on the local kinematic parameters, wavefield transformation on the single sensor seismic data to generate enhanced prestack single sensor seismic data.
Dependencies are inferred from the claim text.