TY - RPRT TI - A Systematic Interpretation of Subsurface Proppant Concentration from Drilling Mud Returns: Case Study from Hydraulic Fracturing Test Site (HFTS-2) in Delaware Basin AU - Maity, Debotyam AU - Ciezobka, Jordan PY - 2021 DO - 10.15530/urtec-2021-5189 UR - https://www.osti.gov/biblio/1855735 ID - 1855735 ER -