摘要
鄂尔多斯盆地三叠系延长组渗透率小于0．5×10^-3μm^2储层分布范围广泛，储量潜力大。该类储层沉积环境复杂，成岩胶结作用强，具有粒度细、孔喉小、渗流阻力大等特征。针对这类储层的有效开发，长庆油田近期从储层地质与渗流机理研究入手，开展了”五点法、小井距、小水量、超前注水”开发试验，取得了一些阶段性成果与认识，为下步攻关研究指明了方向。
The Triassic Yanchang Formation reservoirs with permeability of less than 0.5 millidarcy （10-3μm^2） are widely distributed in Ordos basin, with a great potential of reserves. For effective developing this kind of reservoirs, proceeding from the reservoir geology and percolation mechanism researches, development tests of ＂fivespot pattern, small well spacing, small quantity of waterflooding, and waterflooding in advance＂ are carried out in Changqing oilfield, and achieved some phase results. It points out orientation for further research studies.
