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US 2015/0316673 A1Published application
Systems and Methods for 3D Seismic Data Depth Conversion Utilizing Artificial Neural Networks
OwnerJacky Muri Wiener, Michael John Eberhard +1inventors
InventorsJacky Muri Wiener, Michael John Eberhard, Stewart Arthur Levin
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Abstract
Systems and methods for the conversion of stacked, or preferably, time migrated 3D seismic data and associated seismic attributes from a time domain to a depth domain.
Claims22
A method for converting three-dimensional seismic data from a time domain to a depth domain, which comprises:
- predicting interval transit times for selected wells without sonic logs within or near a reservoir interval of interest using an artificial neural network;
- converting time-depth pairs for the selected wells to time-depth pairs along a seismic time horizon;
- forming a reference horizon by realigning seismic traces in a three-dimensional seismic time volume to align the seismic time horizon with a time zero on each trace;
- assigning a relative depth to each seismic sample value and respective seismic attribute value at or near the reservoir interval of interest using the converted time-depth pairs;
- forming multiple structurally correct surfaces representing a time-depth horizon volume;
- and
- transferring each seismic sample value and respective seismic attribute value at or near the reservoir interval of interest from the seismic time volume to the multiple structurally correct surfaces in the time-depth horizon volume.
4 more elements
A program carrier device for carrying computer executable instructions for converting three-dimensional seismic data from a time domain to a depth domain, the instructions being executable to implement:
- predicting interval transit times for selected wells without sonic logs within or near a reservoir interval of interest using an artificial neural network;
- converting time-depth pairs for the selected wells to time-depth pairs along a seismic time horizon;
- forming a reference horizon by realigning seismic traces in a three-dimensional seismic time volume to align the seismic time horizon with a time zero on each trace;
- assigning a relative depth to each seismic sample value and respective seismic attribute value at or near the reservoir interval of interest using the converted time-depth pairs;
- forming multiple structurally correct surfaces representing a time-depth horizon volume;
- and
- transferring each seismic sample value and respective seismic attribute value at or near the reservoir interval of interest from the seismic time volume to the multiple structurally correct surfaces in the time-depth horizon volume.
4 more elements
Dependencies are inferred from the claim text.