Patent ID: 7206782
Filing Date: 2007-04-17
Classification: G01V,Y10S

Abstract:
1. A method for deriving a seismic attribute file executed by a computer system, comprising the steps of: a. inputting a horizon file data; b. inputting attribute file data wherein the attribute file data are selected from the group consisting of: c. indexing from the attribute file data at corresponding geographic locations of the horizon file, forming an attribute file; d. obtaining the gradient of the horizon file data thereby producing a horizon vector file; e. obtaining the gradient of the attribute file thereby producing an attribute vector file; and f. performing a compilation of the horizon vector file and the attribute vector file to ascertain if attribute changes in a direction towards a surface datum for a narrow time and depth range are detected and measured, wherein the narrow range is less than 5% of the total time or depth range contained within the horizon file.