Abstract
Poly-surfactant is a new type of oil displacing agent, which is grafted on polymer molecular chain and has special function group. Through the interaction of inter-molecular chain and intra-molecular chain, that can achieve the functions of emulsifying, increasing viscosity, washing oil, plugging water, etc. Laboratory study shows that poly-surfactant has EOR over 18% than water flooding. In this paper, the physical and chemical properties of the series of poly-surfactant were evaluated by laboratory test. The viscosity-increasing property of the poly-surfactant was much better than that of the common polymer and it was a shear-diluting fluid. The retention rate of viscosity in 60 days is higher than 100%, and the retention rate of viscosity in Profile Control and 70 mpa.s, and the water-out rate of emulsion is between 30% and 70%. It can provide a technical support for greatly EOR in thin and poor reservoirs in terrestrial multi-layered sandstone reservoir.
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Wang, Fl. (2022). Laboratory Experimental Study on Physical and Chemical Properties of Poly-surfactant. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2021. IFEDC 2021. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-2149-0_281
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DOI: https://doi.org/10.1007/978-981-19-2149-0_281
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