Method for calculating heat conductivity coefficient of CO2-stratum rock

• Main Authors: QIN JIAZHENG, SUN YU, ZHAO GUOQING, HE YOUWEI, WANG NING, TANG YONG, RUI ZHENHUA, LONG KEJI
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2024
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a method for calculating a CO2-stratum rock heat conductivity coefficient, which comprises the following steps: S1, preparing a displacement experiment device, a stratum rock core and mixed gas, and measuring basic parameters of the stratum rock core and the mixed gas; the mixed gas comprises CO2, methane and water vapor; s2, the stratum rock core is loaded into a rock core holder of the displacement experiment device, and the displacement experiment device is vacuumized; s3, injecting the mixed gas into the core holder under a target pressure condition until a time threshold is reached, and recording experimental parameters in the injection process; and S4, establishing a CO2-stratum rock heat conductivity coefficient calculation model, and calculating the CO2-stratum rock heat conductivity coefficient according to the CO2-stratum rock heat conductivity coefficient calculation model in combination with the data obtained in the step S1 and the step S3. The rock heat conductivity coeffi