Several members of our highly successful Marcellus Shale Project have encouraged Core Lab to initiate a similar project in the Upper Devonian black, organic-rich shales in the gas and liquids maturity windows of northwest Pennsylvania and possibly in New York. The sequence of Upper Devonian shales include in ascending stratigraphic order the Burket, Geneseo, Middlesex, Rhinestreet, and Huron.
Several companies are embarking on an evaluation of the Upper Devonian shales and have either drilled, or are planning to drill, pilot wells with the acquisition of cores. The Upper Devonian shales may have similar or very different reservoir properties than the Marcellus and should be challenging in terms of reservoir characterization, predicting producibility potential, estimating ultimate recovery, and optimizing fracture stimulation techniques.
The primary objective of this project is to provide operators with measured geological, petrophysical, geomechanical, geochemical, and production properties of the Upper Devonian shales in order to improve their formation evaluation and to optimize stimulation and production. Our work suggests that understanding the similarities and differences in these shales 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 for the Upper Devonian shales. Specifically, the project objectives are as follows: