Abstract
Injection of high-temperature steam is an effective and environment-friendly method for in situ upgrading of oil shale. In order to determine the variation rules of porosity and permeability of oil shale during the in situ upgrading process via steam injection, a numerical simulation model was established considering the deformed medium theory. This paper analyzed the influence of steam injection rate on medium deformation and oil production from several aspects, including the temperature distribution and kerogen decomposition. The results show that, under the action of kerogen decomposition and its products, the porosity and permeability of matrix increase gradually with the temperature. There is a rapid increase stage of cumulative oil production corresponding to the changes in average porosity and permeability of reservoir. The average porosity and permeability of reservoir increase faster with the steam injection rate; moreover, the rate of oil production is accelerated and the period of it becomes shorter. The research provides theoretical basis for the application and promotion of in situ upgrading of oil shale via steam injection.
Copyright 2018, Shaanxi Petroleum Society.
This paper was prepared for presentation at the 2018 International Field Exploration and Development Conference in Xi’an, China, 18–20 September, 2018.
This paper was selected for presentation by the IFEDC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC Committee and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC Committee, its members. Papers presented at the Conference are subject to publication review by Professional Committee of Petroleum Engineering of Shaanxi Petroleum Society. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of Shaanxi Petroleum Society is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300Â words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC. Contact email: paper@ifedc.org.
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Zheng, Y., Lei, G., Yao, C., Pei, S., Wang, L., Zhang, X. (2020). Numerical Simulation of Deformed Medium on In Situ Upgrading of Oil Shale via Steam Injection. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2018. IFEDC 2018. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-7127-1_57
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DOI: https://doi.org/10.1007/978-981-13-7127-1_57
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