Currently, numerous oil and gas companies are directing their efforts toward the exploration and exploitation of "Tight Oil" from the Wolfcamp, Avalon Shale, and Bone Spring Sandstones in the Delaware Basin (Figure 1). Production is from the Avalon Shale and Wolfcamp sections above the 1st Bone Spring Sands (Figure 2). Companies are also targeting the 1st, 2nd, and 3rd Bone Spring Sands. These sands were the subject of a joint industry project completed by Core Lab for 10 companies.
This study focus is on the Avalon Shale and Wolfcamp intervals, although other Bone Spring and Penn intervals will also be considered by the members. This unconventional oil reservoir has proved to be challenging in terms of reservoir characterization, predicting producibility potential, estimating ultimate recovery, and optimizing fracture stimulation techniques. Many companies either do not have or have limited rock property data that are crucial for understanding these reservoirs. Therefore, in order to properly evaluate and explore the Avalon and Wolfcamp, 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 of the Avalon and Wolfcamp and reduce finding and development costs.