A new geomechanical modeling approach is presented to estimate hydraulic fracture width based upon joint inversion of near-field and far-field slow deformation data measured, respectively, by Distributed Acoustic Sensing (DAS) and Downhole Tiltmeter Fracture Mapping (DTFM) systems. Each measurement provides a unique and different perspective of the fracture. By substantially reducing the non-uniqueness of possible interpretations, integrating simultaneous deformation measurements allows us to resolve the fracture opening with higher confidence and resolution. We provide a step-by-step modeling workflow, verify our approach using synthetic data, and quantify the uncertainty. To our knowledge, no prior studies have attempted to quantitatively integrate DTFM and low-frequency DAS to obtain estimates of fracture geometry. The resulting correlation between fracture opening and fiber strain can then be applied to other stages in the treatment well that fall outside the detectability range of DTFM and only have fiber data available.

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