Shear-wave splitting analysis of downhole microseismic data for reservoir characterization of the Montney Formation, Pouce Coupe, Alberta
Ben P. Andrews and Thomas L. Davis
Journal name: First Break
Issue: Vol 34, No 7, July 2016 pp. 85 - 91
Special topic: Passive Seismic
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Price: € 30
Following the symbiotic emergence of hydraulic fracture stimulation and microseismic monitoring, the phenomenon of shear-wave splitting is now being measured from completions operations. This study focuses on the downhole microseismic survey acquired at Pouce Coupe during the hydraulic fracture treatment of three horizontal wells. Microseismic shear-wave splitting analysis was performed to better constrain the physical rock properties of the Montney Formation. A strong temporal correlation was also observed between shear-wave splitting measurements and completion data providing insight into the response of the reservoir during hydraulic stimulation. In recent years, significant strides have been made to improve and semi-automate a workflow to measure shearwave splitting from microseismic data. Multiple studies have previously exploited this approach to model seismic anisotropy and infer the strength and orientation of aligned fracture sets and sedimentary fabrics within producing reservoirs (Verdon et al., 2011).