A Study on the Thermal Physical Property Changes in Formation Rocks during Rapid Preheating of SAGD

Jie Tian (), Shiwen Huang, Mingda Dong, Wende Yan () and Zhilin Qi ()
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Jie Tian: School of Petroleum and Natural Gas Engineering, Chongqing University of Science & Technology, Chongqing 401331, China
Shiwen Huang: Experimental Testing Technology Center of Northwest Oilfield Branch of Sinopec, Urumqi 830011, China
Mingda Dong: School of Petroleum and Natural Gas Engineering, Chongqing University of Science & Technology, Chongqing 401331, China
Wende Yan: School of Petroleum and Natural Gas Engineering, Chongqing University of Science & Technology, Chongqing 401331, China
Zhilin Qi: School of Petroleum and Natural Gas Engineering, Chongqing University of Science & Technology, Chongqing 401331, China

Energies, 2024, vol. 17, issue 15, 1-18

Abstract: The incorporation and application of SAGD rapid preheating technology effectively solve the problem of the long preheating cycle in the SAGD steam cycle. The thermal properties of reservoir rocks are an important factor affecting the heat transfer law governing their formation during the rapid preheating process of SAGD. During the rapid preheating process of SAGD, the expansion of the reservoir and the steam cycle process will cause changes in the pore permeability, oil-water saturation, and temperature of the reservoir rocks, which will inevitably lead to differences in the changes that occur in the thermal properties of the reservoir rocks, compared to those under the influence of a single factor. In this study, experiments were conducted to determine the thermal properties of reservoir rocks under the combined influence of pore permeability, oil-water saturation, and temperature, quantitatively characterizing the changes in the thermal properties of reservoir rocks. Using the orthogonal method to design and carry out experiments for determining the thermal properties of reservoir rocks, the main factors affecting the thermal properties of reservoir rocks and the significance of each factor’s impact on the thermal properties of reservoir rocks were determined through intuitive analysis and variance analysis of the experimental results. Finally, a regression equation that can characterize changes in the thermal properties of reservoir rocks under the influence of multiple factors was obtained through multiple nonlinear regressions of the experimental results.

Keywords: SAGD; rapid preheating; thermal properties (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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