公开(公告)号：US20190079066A1

公开(公告)日：2019-03-14

申请号：US16128129

申请日：2018-09-11

Applicant: Chevron U.S.A. Inc.

Inventor： Soumyadeep Ghosh ,  Adwait Chawathe ,  Sophany Thach

IPC: G01N33/28 ,  E21B43/16 ,  E21B41/00

Abstract: A method for predicting phase behavior includes determining a hydrophilic-lipophilic difference based on a ratio of salinity to optimum salinity in the microemulsion system. The method further includes determining a mean solubilization ratio as a direct function of the hydrophilic-lipophilic difference at a same state as an optimum solubilization. The method also includes predicting phase behavior based on the determined mean solubilization ratio. The method additionally includes injecting a surfactant into a reservoir according to the predicted phase behavior.