Study on Advanced Water Injection Time in Low Permeability Reservoir

Lijun  Wang; Linli  Wei

doi:10.4236/epe.2011.32025

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EPE Vol.3 No.2 , May 2011

Study on Advanced Water Injection Time in Low Permeability Reservoir

Lijun Wang, Linli Wei

Abstract: A certain formation pressure level must be kept due to the threshold pressure of the low-permeability reser-voir during the seepage. Advanced water injection can keep the formation pressure at a higher level and keep a higher pressure gradient, which is an effective way to develop low-permeability reservoir. Based on the mechanism of advanced water injection and characteristic of porous flow in low permeability reservoir, a seepage model considering threshold pressure gradient is established to determine the formation pressure distribution at anytime as the water is injected at a constant speed. The optimum water injection time for the advanced water injection technology can be determined by using this model. The calculated result coincides basically with the numerical simulation result, which indicates that the model put forward in this paper is feasible.

Keywords: Advanced Water Injection, Injection Time, Reservoir Pressure, Threshold Pressure Gradient

Cite this paper: nullL. Wang and L. Wei, "Study on Advanced Water Injection Time in Low Permeability Reservoir," Energy and Power Engineering, Vol. 3 No. 2, 2011, pp. 194-197. doi: 10.4236/epe.2011.32025.

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