稠油油藏热流耦合“两箱”分析模型及应用研究

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Abstract There are coupled thermo-hydro-mechanical processes in the thermal recovery producing and their analysis models and methods are insufficient at present. According to development characteristics of heavy oil reservoir，the “two boxes” analytical methods in the reservoir heat and mass transfer processes are proposed. “Black box” analytical method as a general analytical method rules out internal heat and mass transmission in reservoir porous media，and includes energy transfer process between reservoirs and outside and energy change within the system. “White box” analytical method as a fine analytical method contains “black method” and it also studies energy conversion process system among internal parts. On this basis，numerical simulation and analysis by CMG software are carried out and the judgment criterion of finding vapor condensation area and its front finger during thermal recovery is proposed. This research gives basic theories for further research of flow characteristics in heavy oil thermal recovery injection process and improvement of the oil and gas recovery during tertiary recovery.

Key words： numerical simulation;thermal recovery reservoirs;“two boxes&rdquo analytical methods;coupled model;vapor condensation area front finger

Received: 26 September 2011

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http://www.rockmech.org/EN/Y2012/V31/I5/1007

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