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《Journal of Oil and Gas Technology》 2009-03
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Study on the Residual Oil Distribution of Block Sandstone Reservoirs in Lufeng Depression at the Extra-high Water-cut Stage

LI Yan-ping (Key Laboratory of Oil and Gas Drilling and Production Engineering; College of Petroleum Engineering, Yangtze University, Jingzhou 434023, Hubei, China)LUO Dong-hong, ZOU Xing-bo, XUE Yan-hong (Shenzhen Branch of CNOOC, Shenzhen 518067, Guangdong, China)  
Two oil fields of LFG13 and LFG22 in Lufeng Depression of Pearl River Mouth Basin were taken as examples in this paper. The study on the remaining oil distribution in the reservoir from massive sandstone has been conducted from four aspects: the barrier effect of both fault eaves and the embedded impermeable zone, hard inflowing from low permeable zone at the top of massive sandstone due to the demand of ultra high startup pressure drawdown, the formation heterogeneity and local well-pattern poor controlling. The corresponding strategy and method for developing the remaining oil gathering area of such type are eaves oil, pressure drawdown hardly transmitting area, the sandwich upper and lower part of sand composite layer and well-patter poorly controlling area.
【CateGory Index】: TE327
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