摘要
通过大庆油田不同井距的中区西部、杏五区两个三元复合驱先导性矿场试验和北一区断西、杏二区两个扩大的三元复合驱矿场试验的动态反映特征 ,在大庆油田实际油层地质条件下 ,模拟了计算的直列式、斜列式、四点法、五点法、七点法、九点法和反九点法 7种井网布井方式对三元复合驱油效果影响的结果 ,研究了大庆油田三元复合驱的最佳布井方式和井距。结果表明 ,五点法面积井网的驱油效果最高 ,七点法面积井网的最差 ;在大庆油田三元复合驱注入速度为 0 .1～ 0 .2PV(孔隙体积倍数 )条件下 ,对于主力油层 ,以注入压力不超过油层破裂压力为限 ,注采井距不宜大于 30 0m。大庆油田经过一次加密调整和二次加密后 ,大面积构成了注采井距为 2 0 0～ 2 5 0m的五点法面积井网 ,为大庆油田大规模开展三元复合驱提供了良好的应用条件。
In this paper, the influences of well pattern and space on ASP flooding in Daqing oilfield were investigated by using numerical simulator GCOM. Well patterns, including 4-spot, 5-spot, 7-spot, 9-spot, inverted 9-spot, straight row and inclination row in the simulation, and well spaces ranging from 200 to 300m were studied in this simulation. The numerical simulation results indicated that the 5-spot is the most favorable well pattern for ASP flooding in Daqing oilfield, while the 7-spot is the worst well pattern. The well space between injector and producer should be smaller than that of 300m at such simulation conditions as injection volume ranging from 0.1 to 0.3 PV and injection pressure less than 13.5 MPa. As a result, in-fill drilling will give good future for industrial application of ASP flooding in Daqing oilfield.
出处
《西南石油学院学报》
CSCD
2000年第3期46-49,共4页
Journal of Southwest Petroleum Institute
基金
"九五"国家重点科技攻关项目!( 96-12 1-0 1-0 1-0 1)
关键词
数值模拟
井距三元复合驱油
井网布井
化学驱油
combination drive, numerical simulation, performance analysis, well pattern and space
