Research progress on imbibition mechanism and influencing factors of shale oil
The mechanisms of spontaneous imbibition to enhance oil recovery,including capillary force,electrochemical force,etc.,are reviewed.Imbibition mechanism models and influencing factors for shales of varying complexity are expounded.The factors which control spontaneous imbibition are summarized,inclu-ding reservoir rock,fluid properties,temperature and pressure.The issues of spontaneous imbibition and the ways forward are noted,which provides a theoretical basis for improving EOR of shale oil in the future.
shale oilspontaneous imbibitioncapillary forceelectrochemical forceimbibition model