Subsurface Characterization of Hydraulic Fracture Test Site-2 (HFTS-2), Delaware Basin

作者：Fadila Bessa, Kanay Jerath, C. Ginn, Patrick H. Johnston, Yu Zhao, Tim Brown, Rubén López, James Kessler, Brian Lee Nicklen, Vinay Sahni · 发表于：Proceedings of the 9th Unconventional Resources Technology Conference · 年份：2021 · DOI：10.15530/urtec-2021-5243 · 被引用次数：16 · 研究领域：Hydraulic Fracturing and Reservoir Analysis、Drilling and Well Engineering、Groundwater flow and contamination studies

Hydraulic Fracturing Test Site-2 (HFTS-2) is a field-based research experiment performed in the Wolfcamp Formation of the Permian (Delaware) Basin. This paper focuses on integration, advanced geological characterization, and 3D subsurface modeling of the comprehensive HFTS-2 dataset. The study showcases a multidisciplinary reservoir characterization approach that incorporates geology, petrophysics, geochemistry, geomechanics, microseismic, and subsurface engineering analysis. Subsurface characterization of organic-rich mudstone formations requires understanding complex hydraulic fracture network growth in relation to inherent lithology, geomechanical properties, and interaction with pre-existing natural fractures. This paper presents a characterization workflow incorporating pre- and post-stimulation subsurface data, unique to the HFTS-2 dataset. The study integrated: (1) rock properties from logs, cores, and thin sections; (2) natural and hydraulic fracture descriptions from cores and image logs; (3) local and regional stresses; (4) geomechanics; (5) microseismic; (6) fiber optic (FO) and bottomhole pressure gauge (BHPG) response; and (7) produced fluids analysis. During a stimulation treatment, creation of the stimulated rock volume (SRV) is influenced by several subsurface factors. Key contributing factors include structural context, stress conditions, lithology, facies architecture, pre-existing natural fractures, and geomechanical properties. The HFTS-2 subsurface data i...