Estimation of Fracture Geometries From Poroelastic Pressure Responses in Offset Wells

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Abstract

We present a general method for estimating fracture geometries from offset pressure signals that is scalable to large, complex, multi-well pad operations. The method leverages validated theory and implementation from the domain of mathematical optimization to efficiently and effectively compute macro-scale fracture dimensions for many realizations, based on randomized initial conditions. These realizations establish uncertainty bounds for a global solution, which is determined by way of fine-scale refinement of a candidate solution drawn from the macro-scale results.

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