摘要
水平井开发油藏具有单井产量高、储量控制程度高、经济效益好等明显优势，近年来在世界各油田中得到了越来越广泛的应用。针对大庆外围油藏具有低渗多油层的特征，应用数值模拟方法优选水平井井网的部署方案。结果表明：与传统直井井网相比，水平井井网可以明显改善油藏开发效果、提高采出程度。优选得到最优井阀为非对称五点水平井井网，与以往的五点水平井网相比，扩大了井网控制面积，更有效地克服了因压力损失造成的注水局部突进现象。
Reservoir development by horizontal wells, which are widely used in oilfields all over the world in recent years, has some obvious advantages, such as high single well production, high degree of reserves control and high economic benefits. In view of characteristics of peripherally low permeability reservoirs with muhilayers in Daqing Oilfield, patterns deployment and relative development effectiveness of horizontal wells patterns are optimized by using reservoir simulation method. Results indicate that, compared with conventional vertical well patterns, horizontal well patterns can improve development effectiveness of reservoirs obviously and increase recovery percent of reserves. The optimal well patterns obtained by optimization is asymmetric five-spot horizontal well patterns. Compared with conventional five-spot horizontal well patterns, they enlarge well pattern spacing and can overcome local breakthrough of injected water caused by pressure loss.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2009年第1期41-44,共4页
Petroleum Geology & Oilfield Development in Daqing
关键词
水平井井网
数值模拟
非对称五点水平井井网
低渗透
horizontal well pattern
numerical simulation
asymmetric five-spot horizontal well pattern
low per-meability
