Fractures, Hydraulic Injections, and Strain Accommodation in the Tensleep Formation at Flat Top Anticline, Carbon County, Wyoming
John C. Lorenz, 2013. "Fractures, Hydraulic Injections, and Strain Accommodation in the Tensleep Formation at Flat Top Anticline, Carbon County, Wyoming", Application of Structural Methods to Rocky Mountain Hydrocarbon Exploration and Development, Constance N. Knight, Jerome J. Cuzella, Leland D. Cress
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A study of fracture characteristics in sandstones from the Tensleep Formation on a spectrum of thrust-related Laramide Anticlines in Wyoming suggests that an idealized fracture model can be constructed for these reservoirs but that important local variations are common. A conceptual model for fracture genesis and distributions in folded Tensleep reservoirs was derived from a comparison of fracture characteristics in the various anticlines, with key relationships being documented by an important surface and subsurface data set at Teapot Dome. Knowledge of the most likely fracture patterns in different parts of the folded Tensleep reservoirs across Wyoming can be used to predict and model fracture-related fluid flow, but this requires a solid understanding of the structural development of a given anticline.
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With increasing industry emphasis on developing “unconventional” tight gas reservoirs and on enhancing recovery from existing fields, geologists are facing diverse challenges in the applications of structural geology. Identifying fracture characteristics within petroleum systems is essential. Understanding the timing of tectonics and the formation of structures is important, as these factors strongly influence hydrocarbon generation, migration, entrapment, and preservation. The purpose in publishing this collection of key papers is to aid future workers in addressing complex interrelationships between structural geology and hydrocarbon exploration and development. The first four chapters of this book focus on structural concepts and techniques. The second part of this book is a collection of Rocky Mountain fault and fracture studies. These well documented studies are valuable reference materials for all petroleum geologists.