This paper presents a new technology for oil recovery enhancement in heterogeneous waterflooding under high tempterature and high water salinity the method mainly is to inject a mineral dispersion system(SMD) to improve the sweep effciency and recover the residual oil by emulsification-entrainment. This system is a pseudoplastic fluid with temperature tolerance,shearing resistence and good stability. Core flooding tests show the oil recovery is increased by 10%. The displacement nechanisms have been studied by microscopic modeling technique. After a successful pilot test,The commercial field test are conducted and the initial results are obtained.

Keywords:
system viscosity, stability, spe 50779, producer, resistance, efficiency, society of petroleum engineers, enhanced recovery, application, water salinity
Subjects:
Improved and Enhanced Recovery
Copyright 1999, Society of Petroleum Engineers
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