Variation Characteristics of Reservoir Physical Properties after Thermal Recovery in Heavy Oil Reservoirs

Abstract:

With the development of heavy oil reservoirs, it faced a series of problems. Using the theory of thermal-hydrological-mechanical (THM) coupling, a predictive model of reservoir physical properties (RPP) after thermal recovery is established. Based on this model, the changing process of reservoir physical properties is simulated by the method of numerical simulation. The obtained results show that the sand production has a significant influence on RPP. By contrast with rock deformation, it has a smaller influence on RPP. The influence caused by the former is about 5~8 times than latter. During the period of steam injection, resulting from the movement of sand grain and expansion of reservoir, both porosity and permeability of reservoir are on the rise. Due to the sand production and reservoir compression, a reducing tendency is happened in the production period. The changes of RPP in reservoir are huge along the main streamline direction, and it might change because of the presence of high-permeability path.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 2848-2852
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.2848
• Online since: July 2012
• Authors: Xiao Hu Dong, Hui Qing Liu, Zhan Xi Pang, Yong Gang Yi
• Keywords: Fluid-Solid Interaction, Heavy Oil Reservoir, Rock Deformation, Sand Production, Thermal Recovery

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