HyFTS Quarterly International Webinar
Please join us for our SPE Hydraulic Fracturing Technical Section International Webinar!
HyFTS Webinar (December 16, 2025, 8:00 AM – 09:15 AM CST)
Register here: https://lnkd.in/gGQ_5yFb
Keynote Speaker: Wen (Eve) Wang, General Manager and Principal Scientist at IFDATA LLC
Title: Bedding Plane Slippage and Fault Reactivation Captured by Cross-well LFDAS Monitoring During Hydraulic Fracturing
Abstract:
Understanding fracture growth in complex unconventional reservoirs is critical for effective stimulation design, yet traditional models often assume vertical tensile fractures. In layered formations with weak bedding planes and natural faults, fracture behavior can differ dramatically. This talk presents the first cross-well low-frequency DAS observations of horizontal bedding-plane slippage and fault reactivation during hydraulic fracturing in the Sichuan Basin. Strain data from a horizontal observation well show elliptical deformation patterns and polarity flips—evidence of horizontal fracture propagation with a shear component. Additional dipole-stripe signatures indicate repeated sliding along natural faults. History-matched geomechanical modeling confirms that shear deformation and hydraulic connectivity to faults are required to reproduce the field signals. These results highlight the value of cross-well strain monitoring for understanding complex fracture processes and improving stimulation design and risk management.
Bio:
Wen (Eve) Wang is the General Manager and Principal Scientist at IFDATA LLC, specializing in distributed fiber-optic sensing and data-driven subsurface diagnostics. Her work integrates signal processing, machine learning, and large-scale field-dataset analysis to extract actionable insights from DAS/DTS/DSS measurements. She has extensive experience applying cross-well and in-well strain observations to quantify fracture behavior, wellbore integrity, and production dynamics. Wen is a co-author of the URTeC 2023 Best Paper on quantitative analysis of HFTS-2 completion designs using cross-well strain, and her study on bedding-plane slippage and fault reactivation (the topic of this talk) received the ARMA Best Case Study Award in 2024. She holds a Master of Electrical Engineering from Princeton University and has played a leading role in developing and applying advanced fiber-optic workflows across multiple industry projects.
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