oa New Deterministic Calculation Regime for the Estimation and Characterization of the Stimulated Reservoir Volume (SRV)

A new deterministic calculation regime for the estimation and characterization of the Stimulated Reservoir Volume (SRV) exists. It is based upon a combination of ultra-fine-scaled measurements of induced surface deformation morphology (on the micrometer scale) and a new, two-pass, geomechanical inversion technique. The approach overcomes instabilities and questions of uniqueness with inverted solutions of reservoir strain distributions. The technique was deployed concurrently with the more conventional, High-node-count, highfrequency, downhole, offset microseismic mapping in an exploratory horizontal completion located in an Eagle Ford horizon where low deviatoric stresses made dual and tri-modal complex fracture networks likely. Passive microseismics and microdeformation techniques respond to fundamentally different mechanical processes associated with hydraulic fracturing. This pilot application merged the results from these two mapping diagnostics to explore the potential for integrated geophysical/geomechanical information to facilitate a more accurate and comprehensive understanding of treatment performance.