Probabilistic forecasting and economic evaluation of pressure-drawdown effect in unconventional oil reservoirs under uncertainty of water blockage severity

摘要

Applying mild pressure drawdown during early-time oil production from unconventional reservoirs is believed to be beneficial for the ultimate oil recovery because it prevents early fracture conductivity loss and mitigates water blockage. However, previous studies demonstrate mixed results - some studies report mild drawdown as beneficial for the oil recovery, whereas others detrimental.