中文摘要：

为了研究英东油田注气提高采收率的可行性,在室内开展细管实验和长岩芯驱替实验,确定注气开发的最小混相压力及不同注入开发方式下的驱油效率.研究结果表明：在原始地层压力条件下,英东油田注气开发方式应为非混相驱;直接气驱、气水交替驱和水驱后气水交替驱这3种不同的注气开发方案中,气水交替驱的驱油效率最高,可达到58.41％.

英文摘要：

In order to study the feasibility of the reservoir gas injection, we have carried out the slim tube test andlong -core displacement test in laboratory, to determine the minimum miscibility pressure and flushing efficiency indifferent injection method. Results show that Yingdong Oilfield should adopt the immiscible displacement under thepresent formation conditions since the MMP is 31.8 MPa, and the sweep efficiency of water - alternating - gas（WAG） is much better than gas injection and WAG after water flooding, which reaches up to 58.41%.