Features, Controls and Influence for Petroleum Development of Relative Permeability Curve in Low Permeable Sandstone Reservoirs
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摘要: 低渗透储层油、水两相渗透率特征及其影响因素的研究，是认识、分析低渗透储层油、水两相渗流机理的重要途径，是合理开发油田的基础。本文在总结低渗透油藏油水相对渗透率曲线特征的基础上，对以火山岩、凝灰岩岩屑为主的岩屑砂岩相对渗透率曲线特征进行研究，并分析了其影响因素，研究表明低渗透储层的岩石学特征，碎屑颗粒的成份、结构，其表面的粗糙程度，及其粘土矿物的产状对相对渗透率曲线有明显的影响。这一研究成果对合理开发此类低渗透油田有着十分重要的意义。Abstract: The study of the characters and the influencing factors of the low permeable sandstone reservoirs relative permeability curve is not only the important approach to analyze and recognize the rule of oil and water fluid percolation, but also the base of proper development petroleum. By summarizing the futures of the relative permeability curve in low permeable reservoirs and study of the futures of relative permeability curve in lithic arenite which rock fragments are most come from tuff and lava, it is the reservoirs rock character, the type of detrital minerals, the degree of grains coarse and the lay out of clay mineral that are main influencing factors which influence the relative permeability curve. This conclusion has great significance in proper development in this kind of low permeable oil reservoirs.
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