温度对油砂力学性质的影响规律研究

doi:10.13722/j.cnki.jrme.2018.0635

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Abstract Oil sand reservoir is filled with the rich viscous bitumen，so the high temperature can make a significant influence on the reservoir stress/deformation in thermal recovery. High-temperature and high-pressure triaxial compression test is usually used for the modeling of reservoir deformation. To acquire the stress-strain response as well as the mechanical properties under the stress/temperature conditions corresponding to thermal operations，the effects of temperature on mechanical properties of oil sands in Athabasca，Cold Lake，Faja(Venezuela)，and Karamay were studied. The microstructure of different oil sands was investigated to interpret the temperature- induced mechanical properties. It was concluded that the thermal effects on different oil sands differ greatly and that oil sands in Cold Lake and Karamay are more thermosensitive. According to the statistical analysis for normalized parameters under varying temperatures，it was found that the thermomechanical response for different oil sands can be divided into three patterns，determined by factors like the content of fine or bitumen，the degree of mineral grain crushing/rearrangement，the viscosity of bitumen and the cements and cementation types.

Key words： rock mechanics oil sand temperature pressure mechanical properties microstructure

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	Articles by authors
	GAO Yanfang1
	2
	CHEN Mian1
	2
	LIN Botao1
	2
	JIN Yan1
	2
	CHEN Sen3
	YU Huiyong3

Cite this article:

GAO Yanfang1,2,CHEN Mian1, et al. Thermal influences on mechanical properties of oil sands[J]. , 2018, 37(11): 2520-2535.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.0635 OR http://www.rockmech.org/EN/Y2018/V37/I11/2520

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