旅大10-1油田化学驱物理模拟研究

Study on physical simulation of chemical flooding in Lvda 10-1 Oilfield

隆锋 仲强 张云宝 卢祥国

Long Feng Zhong Qiang Zhang Yunbao Lu Xiangguo

大庆石油学院·提高油气采收率教育部重点实验室, 黑龙江大庆 163318

Key Laboratory of EOR of Ministry of Education, Daqing Petroleum Institute, Daqing 163318

旅大10-1油田位于渤海辽东湾中部海域, 油藏具有高温、高矿化度和胶结疏松等特点。从海上油田开发实际需求出发, 结合油藏地质特征和流体性质特点, 利用室内物理模拟实验方法, 研究了早期注聚合物和聚合物微凝胶的驱油效果。结果表明, 早期化学驱不仅大大缩短油田开发周期、节约操作费用, 而且最终采收率也高于中后期化学驱的采收率。结果还表明, 在化学药剂费用相同条件下, 聚合物凝胶驱的增油效果要好于普通聚合物驱。

Lvda 10-1 Oilfield is located in central Liaodong Bay of Bohai Sea, and is a reservoir of high temperature, high salinity and loose cementation. Based on the practical requirement of offshore oilfield development, according to the geological characteristics and fluid property, through indoor physical simulation, the polymer flooding and polymer gel flooding in early stage are studied. The results show that the chemical flooding in early stage can not only shorten the oilfield development time, save operating cost, but also has a higher recovery efficiency than that of middle-late stage. The research results also indicate that, in the condition of the same chemical cost, the productive effect of the polymer gel flooding is better than that of polymer flooding.