Abstract
The exploration and development of heavy oil reservoir have gained more and more attention. Thermal recovery should be applied in heavy oil reservoir because of the characteristics of high density, high viscosity and low mobility. And the injected fluid with high temperature and high pressure has a great impact on compressibility and other parameters of rock. In this paper, a tester which is self-designed is used to measure the compressibility of rock under high temperature and high pressure conditions. The results show that the compressibility of the rock is closely related to the stress state and temperature status. The compressibility of the rock decreases while the net effective cover pressure increases, and the amplitude decreases when the net effective cover pressure increases. The higher the temperature is, the larger the compressibility of the rock would be. And the rate of growth differs in different temperature. In low temperature (25–50 °C) the growth rate is not obvious; the largest rate appears when the temperature is in the range of 50–100 °C; then the increase rate becomes lower slightly when the temperature increases. The large compressibility of rock indicates that the change of pore volume rate in rock is large, which is useful for the single well production increase.
Copyright 2019, IFEDC Organizing Committee.
This paper was prepared for presentation at the 2019 International Field Exploration and Development Conference in Xi’an, China, 16–18 October, 2019.
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Acknowledgments
This work is financially supported by the Changjiang Scholars and Innovative Research Team in University (Grant No. IRT_14R58), the State Key Laboratory Program of Offshore Oil Exploitation and Qingdao Science and Technology Project (Grant No. 15-9-1-55-jch).
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Liu, Yw., Zhang, Xq., Zou, Dy. (2020). Contribution Title Experimental Study on Influence of Temperature on Compressibility of Rock. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2019. IFEDC 2019. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-2485-1_257
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DOI: https://doi.org/10.1007/978-981-15-2485-1_257
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