ENHANCEMENT OF OIL RECOVERY VIA DIRECT CURRENT

摘要

Mathematical models were established to describe onephasernfluid flow in fractured-vuggy media under therninfluence of an electric field. The finite element equationsrnof numerical models were derived. The fluid flowrnmechanism in fractured-vuggy media under the influencernof electric field was systematically investigated usingrnCOMSOL Multiphysics software. The distributions ofrnvelocity, pressure, and potential in the fracture and vugrnwere studied. The results show that the electric fieldrneffectively increases fluid flow. The distributions ofrnisobar and equipotential line can be affected by thernfracture and vug. Overall, the findings offer an importantrntheoretical basis for the enhancement of the oil recoveryrnof fractured-vuggy reservoir via direct current (DC)rnelectric field methods. The 150 V-regulated DC powerrnsupply was initially designed according to the results ofrnthe simulation, and then MULTISIM simulation softwarernwas applied. waveform state and thereby meeting thernrequirements Inductance-capacitance was then utilized tornfilter the DC power, resulting in a smooth simulation ofrnoil displacement and imposing electricity.