Patent ID: 11867037
Assignee: ZHEJIANG OCEAN UNIVERSITY
Field: Civil engineering (Other fields)
Classification: CPC E  Y | IPC E

Claim 7:
8. An experimental method used for displacement of CO2 within the reservoir using the experimental apparatus of claim 1, comprising the following steps:
blow-drying the core, vacuuming the core and measuring a pore volume of the core;
displacing formation water with white oil such that water in the core being in a bound state; displacing the white oil with formulated formation crude oil; wherein the formation crude oil being saturated when an oil-gas ratio of core effluent being consistent with an oil-gas ratio of formulated formation crude oil;
performing CO2 flooding after water flooding, direct CO2 flooding, and periodic injection of CO2 respectively; and
performing sensitivity evaluation of the plug.