Abstract

This paper is a preliminary report on a detailed, but regional subsurface database currently under development by Geological Data Services (GDS) for the Morrow and Atoka formations of southeastern New Mexico. The SE New Mexico Atoka/Morrow Project will contain correlated formation data picked from all available well logs in the study area which penetrate the Atoka/Morrow section. A digital well file, with accurate lat/long values for well spots and regionally correlated formation tops, provides the initial canvas on which the database will be developed. The database is mainly focused on the Morrow interval and will consist of correlated sequence stratigraphic tops and markers for over 3,000 wells when complete. Additionally, thickness values for total net sand and four different sand attributes (e.g. porosity, neutron/density crossover, etc.) from the productive intervals of the Morrow, Atoka, and Mississippian Barnett are included. The data will mainly be used to generate various subsurface isopach, structure, and trend residual maps to get a detailed view of the sand deposition of productive intervals in the Morrow, Atoka, and Barnett. Comparisons of these maps with each other and maps of production data, will provide considerable insight into the geometry of producing trends and delineate prospective areas for additional drilling.