根据CO₂驱油提高采收率机理，对低渗透油藏CO₂驱油设计了正对行列注气、正对行列间隔注气、交错行列、行列注水4 种注入方式，共6 种开发方案，运用油藏数值模拟方法进行比较优选。结果表明：正对行列注气（油井150 m 井距、300 m 排距）的井网开发方案采出程度最高。运用该方案对油田进行注CO₂开发具有较好的应用效果。

The effects of four flooding patterns（parallel CO₂-injection, parallel interval CO₂-injection, parallel waterflooding, leaping parallel water-flooding） for low-permeable reservoir by the numerical stimulation are studied. The result shows that the recovery factor of parallel CO₂-injection（rowspacing: 300 m, well spacing: 150 m） is more optimal than other patterns. The plan will enhance the recovery factor of low-permeable reservoir.