摘要
阿北安山岩裂缝油藏注水开发以后，由于裂缝窜流而使油田综合含水上升快，产量下降严重。为了更好地控水稳油，提高开发效果，在注水井调剖措施无明显效果后，首次在高含水井组中实施结合化学调剖的周期注水──在注水初期进行注水井调剖，控制水窜，以更好地恢复压力。在周期注水的注水周期和激动量的确定上，采用了渗流力学理论和矿场动态资料相结合的方法，使得周期注水的注水期和停注期更为合理、科学。实施后，很好地改善了油藏的水驱状况，减缓了油藏产量递减速度。使得平均单井累积增油0．41×104t，油田年递减率下降9．02％，计算新增可采储量33．09×104t。
Having been injected water to develop theandesite fractured opls in Abei oilfield, the rapidwater cut and decline of oil production was created bythe fracture cross flow. In January, 1993, the cyclicwater fldriing combining with chemical water profilecontrol was first used in high water cut wells. It wasalso the first time that the combination of Percolationmechanics with lease dynamic data was used todetermine the water injection period for cyclic waterflwhing and the stimulation, the water floodingperformance is improved and the decline of oilproduction is slowed down- The method can be alsoused in other fractured mpls.
出处
《断块油气田》
CAS
2000年第3期36-39,共4页
Fault-Block Oil & Gas Field
关键词
裂缝性油藏
周期注水
油田注水
注水开发
Andesite, Fractured pool, Cyclic water flooding, Chemical profile control, Water flooding performance
