Fracture Complexity Evaluation in Deep Tight Oil Reservoirs: A Case Study from the G5 Fault Block, Jidong Oilfield
摘要
Deep tight oil reservoirs exhibit low porosity, ultra-low permeability, and pronounced heterogeneity, making hydraulic fracturing optimization critical for economic production. This study addresses these challenges in the G5 Fault Block of Jidong Oilfield by developing a systematic workflow to evaluate post-fracturing fracture complexity. Leveraging detailed fracture parameter analysis, we introduce a novel fracture complexity index to quantify network effectiveness and construct a diagnostic chart for rapid field assessment. The proposed methodology not only enhances fracture design and performance evaluation in the target reservoir but also provides a transferable framework for similar deep tight oil plays globally.