The Powder River Basin digital stratigraphic data files contain stratigraphic correlations including formation tops, lithologic picks and significant intraformational markers for large areas or basins. These digital data files expedite the search for oil and gas by providing explorationists with a consistent regional geodigital (stratigraphic) framework necessary for the integration of other disparate subsurface data types such as drill stem tests, cores, perforations, stimulations, plugging methods, casing programs, mud programs, drill bit programs, production information, and many others. Explorationists need this depth-related information to begin detailed geologic analyses and mapping of hydrocarbon trends.

     Experience in the regional stratigraphy of the Powder River Basin (seven regional studies), tested scientific methodologies, and commitment to superior quality have resulted in the largest commercial library of interpreted, regionally-correlated digital stratigraphic data files in the Powder River Basin. The Powder River Basin digital stratigraphic data files contain information on approximately 37,000 wells. Fifty-eight Paleozoic and Mesozoic intervals and markers were correlated in about 30,000 of these wells that have the relevant geophysical logs necessary to make correlations. Locations and basic header information are also provided for the remaining wells.

Internally Consistent Correlations
     
     The Powder River Basin digital stratigraphic data file was developed by a scientific team experienced in the regional

stratigraphy of the Powder River Basin to ensure an internally-consistent system of picking tops and markers. Seven regional stratigraphic studies in the Powder River Basin have been completed by GDI.

Rigorous Error Checking

      This digital stratigraphic data file has been subjected to rigorous error-checking routines using computer-generated statistics and contour maps. Powder River Basin experienced geologists also hand-contoured maps to check for regional consistency and compatibility with the stratigraphic models of the area.

Corrected Elevation and Location Data

      All reported well locations were evaluated using the IntraSearch aerial photo located drill site data where available. Elevation data from logs was cross-checked with vendor data and, where necessary, with 71/2 minute topographic maps.

Client Tested Files

     Powder River Basin digital stratigraphic data have been client tested and designed for optimum quality and applicability.

Personnel Invested

      A 40-member geologic team contributed a total of 29 people-years worth of work to the Powder River Basin digital stratigraphic data file.