Fiber Optic-Based Diagnostics Reveal Completion Insights On HFTS-2 Project By Nancy Zakhour, Matt Jones, Yu Zhao, Kate Orsini and Vinay Sahni HOUSTON-As part of a study on completion design at the Hydraulic Fracturing Test Site-2 (HFTS-2) in the Delaware Basin, permanent fiber optic (FO) cable was used to acquire unique near-wellbore and far-field surveys to evaluate spatial and temporal hydraulic fracture characteristics. Diagnostics included monitoring of both stimulation and production performance with the objective of improving stimulation distribution effectiveness (SDE) for various completion designs. The integration of distributed acoustic sensing (DAS), distributed temperature sensing (DTS) and hydraulic fracturing treatment data allows a detailed and comprehensive analysis of SDE across perforation clusters (PCs). Qualitative and quantitative information gained through the integrated analysis supports an improved understanding of whether the PCs within a stage were treated evenly as planned, and how different completion designs and operational issues affect stimulation efficiency. JUNE 2022 57