Abstract
In recent years, due to the lack of water resources and environmental protection reason, less water and dry fracturing technology has been paid more and more attention by oil companies. CO2 foam fracturing technology and liquid CO2 fracturing technology have been carried out in many oilfields. During the contact process of low temperature liquid CO2 with formation rock, crude oil and formation water, the temperature of injection section should be changed, and at the same time, the crude oil performance should be changed too. In this paper, a method of testing the rheological properties of crude oil under different temperature, pressure and CO2 injection rate is established by the modification of rotary viscometer. It is found that the sensitivity of crude oil to temperature disappear and the fluidity is improved with the addition of CO2. However, with the increase of CO2 addition, the viscosity of crude oil decreases rapidly, and the recovery of low temperature formation temperature is slow, which requires a long shut in time.
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References
Jiang, H.: Study on the current situation of CO2 enhancing oil and gas recovery in the world. Spec. Oil Gas Reservoir 17(2), 5–10 (2010)
Lichao, S.: Development technology and application of ultra-low permeability reservoir in Changqing Oilfield. Xi’an University of petroleum (2014)
Zhao, G.: Laboratory experiment and numerical simulation of CO2 flooding in ultra-low permeability reservoir. Daqing Petroleum Institute (2008)
Wang, S.: Research and development of CO2 flooding technology in Changqing ultra-low permeability sandstone reservoir. In: 2018 International Conference on Oil and Gas Field Exploration and Development (IFEDC 2018) Papers (2018)
He, J.: CO2 foam in fractured low-permeability reservoir. In: 2018 International Conference on Oil and Gas Exploration and Development (IFEDC 2018) Papers, pp. 56–65 (2018)
Li, Y.: Solubility and volume coefficient of supercritical CO2 in heavy oil. Sci. Technol. Eng. 13(1), 53–57 (2013)
Xing, X.: Experiment on the effect of carbon dioxide on the pour point of crude oil. Oil Gas Field Surf. Eng. 32(11), 56–57 (2013)
Wang, G.: CO2 foam equation of state theoretical model. J. Petrochem. Univ. 23(4), 68–72 (2010)
Harris, P.C.: Application of foam fluids to minimize damage during fracturing. SPE 22394
Li, Z.: Experimental study on dissolution characteristics of CO2 in super heavy oil. J. China Univ. Petrol. 32(5), 92–196 (2008). (Natural Science Edition)
Ali, N.: Experimental measurement of equilibrium interfacial tension of enriched miscible gas–crude oil systems. J. Mol. Liq. 2011, 63–70 (2015)
Acknowledgments
This project is supported by the national major project “research and development of key fluids for reservoir reconstruction” (Number 2016zx0502303).
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Qiu, X., Chen, Y., Xue, Y. (2021). Effect of Liquid CO2 Injection on Rheological Properties of Crude Oil. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2020. IFEDC 2020. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-0761-5_292
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DOI: https://doi.org/10.1007/978-981-16-0761-5_292
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