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Currently, numerous oil and gas companies in the Midland Basin are directing their efforts toward the exploration and exploitation of "Tight Oil" from the Wolfcamp and Cline shales. Core Lab has been conducting a highly successful joint industry project evaluating these reservoirs for 39 member companies over the past two years. However, the underlying Woodford-Barnett is also in the liquids window across the majority of the Midland Basin and has been relatively under explored even though it ranges in thickness from 50 to 200 feet. This stratigraphic section is not included in the current Midland Basin consortium.
Several companies are starting to core and evaluate the Woodford-Barnett potential on their leases in the Midland Basin and the Central Basin Platform. Therefore, in order to properly evaluate and exploit the Woodford-Barnett section, appropriate types of rock property data need to be measured and integrated with log data, stimulation techniques, and production test information. These integrated data sets and case histories will provide operators with the critical parameters to optimize their exploitation and reduce finding and development costs.
The Integrated Reservoir Solutions Division of Core Laboratories is proposing to interested companies participation in a multi-company, geo-engineering, regional study of the Woodford-Barnett in the Midland Basin and Central Basin Platform. This project consists of the characterization and evaluation of numerous conventional cores, rotary sidewall cores, and drill cutting samples taken from multiple wells targeting the Woodford-Barnett. Specifically, the prospective Woodford-Barnett section will be analyzed for geological, petrophysical, geomechanical, geochemical, and production properties. These data will be integrated with well logs, stimulation designs, and production test information. This large and searchable database will provide operators with valuable information not only on their own wells, but also on other operator's wells.
Each company joining the project will be required to contribute core material from one (1) well for analysis, evaluation and inclusion into the database. The core must be through the Woodford-Barnett section. It is anticipated that conventional cores from a minimum of fifteen (15) wells will be included in the project. Each company may also contribute drill cuttings and/or rotary sidewall cores from one reconnaissance well. In addition, public domain cores will be analyzed to supplement the well control.
The primary objective of this project is to provide operators with measured geological, petrophysical, geomechanical, geochemical, and production properties of the Woodford-Barnett in order to improve their formation evaluation and to optimize stimulation and production. Our work suggests that understanding the similarities and differences in the section on a regional basis is the key to successful exploration and exploitation. The resultant database will be an invaluable tool to operators in evaluating, comparing, and designing completion and stimulation methods. Specifically, the project objectives are as follows:
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