特种油气藏2012，Vol.19Issue(1)：42-46,5.
低渗透砂岩中的低对比度油气层类型及成因分析
摘要
Abstract
This paper introduces a general concept of low contrast hydrocarbon reservoir based on deep analyses on log response features of the low permeability sandstone reservoirs in the Xujiahe formation of Bao - jie area, Sichuan Basin and the ChangS formation in Jiyuan area, Ordos Basin in conjunction with well testing and thin section identification data. In low permeability sandstone reservoirs, there are four types of low contrast hydrocarbon reservoirs: reservoirs with little resistivity difference from aquifer, reservoirs with natural productivity and little differences in porosity and resistivity from dry bed; reservoirs with commercial productivity after fracturing and with little differences in porosity and permeability from dry bed, and reservoirs of high and low productivity with little differences in porosity and resistivity. Analysis of the core NMR and thin section identification results of the low contrast hydrocarbon reservoirs shows that the main cause of the above four types of low contrast hydrocarbon reservoirs in low permeability sandstones lies in high irreducible water saturation due to complicated pore structure and the difference in diagenetic facies.关键词
低渗透砂岩/低对比度油气层/孔隙度/电阻率/束缚水饱和度/成岩相Key words
low permeability sandstone/ low contrast hydrocarbon reservoir/ porosity/ resistivity/ irreducible water saturation/ diagenetic facies分类
能源科技引用本文复制引用
肖亮,毛志强,窦伟坦,侯雨庭,金燕..低渗透砂岩中的低对比度油气层类型及成因分析[J].特种油气藏,2012,19(1):42-46,5.基金项目
中油长庆油田分公司项目"鄂尔多斯盆地西北部延长组低渗透砂岩成岩相测井评价应用基础研究"(2009-119) （2009-119）
