Seismic Net Pay (SNP) estimates net pay from seismic attributes. More generally SNP can be used to make estimates of either net pay or net rock volume depending on the input data and the calibration. The documentation will refer to net pay throughout but interchangeability with net rock volume should be inferred.
The application interfaces directly with OpendTect to read and write horizon data.
The basic steps of the algorithm are:
Detune amplitude attribute
Estimate net-to-gross using self-calibration
Convert to net pay and calibrate to well data
Iterate to optimise calibration
For a description of the process please read: Connolly, P.A., 2005, Net pay estimation from seismic attributes, EAGE Extended Abstracts and Connolly, P.A, 2007, A simple, robust, algorithm for seismic net pay estimation, The Leading Edge, October 2007.