段塞组合驱在冀东复杂断块油藏的研究与实践

高浅南区是冀东油田典型的边底水驱复杂断块之一，针对油藏采收率低的状况，开展化学驱技术研究。根据油藏特点，分别建立剖面和平面非均质模型，开展了水驱后7种化学驱方式数值模拟研究，选择其中较优的5种方式与聚合物驱进行边水驱条件下、模拟地层非均质性的物理模拟研究。模拟结果表明，段塞组合驱效果均优于单一化学驱，交联聚合物与活性高分子组成的多段塞组合驱最终提高采收率最高（大于17％）。选择两口注入井开展了现场实验，对应油井采收率提高14％，取得良好效果。

Research of Slug Combination Flooding in Complicated Fault Block of Jidong Oilfield and Its Field Application

The high shallow southern district is a typical block of Jidong oilfield,which is one of the complicated fault block oil fields of edge and bottom water-drive. In view of the status of the low recovery ratio,chemical flooding technology research is developed.According to the reservoir characteristics,profile and plane of inhomogeneous models are established respectively,7 kinds of water-drive Chemical flooding numerical simulation are developed and 5 better styles are chosen out,which are in the condition with Polymer flooding,imitating physical research of formation heterogeneity.The simulation results show that slug composition flooding effect is better than a single chemical flooding and which is made of cross-linked polymer and activity polymer flooding enhances the recovery ratio to be the biggest eventually(more than 17%).Two injection wells are chosen to do field tests and experiment research,the recovery ratio of the corresponding oil well increases 14%,and good effect are achieved.