Method and system for measuring water drive efficiency of oil-containing rock sample

• Main Authors: XIAO PIAOFU, WANG RUI, HU WEI, TANG YONGQIANG, YANG YANG, LANG DONGJIANG, CUI MAOLEI, ZHAO CHUNPENG, LUN ZENGMIN
• Format: Patent
• Language: Chinese; English
• Published: 24.10.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for measuring the water drive efficiency of an oil-containing rock sample, which comprises the following steps: determining the temperature of a degassing oil sample of a target layer under the viscosity of crude oil according to the viscosity of the crude oil of the target layer to be evaluated, and recording the temperature as an experimental temperature; preparing simulated formation water based on non-nuclear magnetic signals, and preparing simulated formation oil at an experimental temperature; and based on the experimental temperature, carrying out a nuclear magnetic resonance core displacement experiment on the oil-containing rock sample of the to-be-evaluated target layer to obtain the corresponding water-oil displacement efficiency. According to the method, the water-oil displacement efficiency of the oil-containing rock core under the original reservoir wetting condition can be rapidly, nondestructively and quantitatively measured. 本发明公开了一种用于测定含油岩样水驱效率的方法，包括：根据待评价目的层