摘要
大港油田板64断块稠油油藏具有密度高、黏度高、胶质沥青质含量高的特点。针对大港油田板64断块油藏特点进行分析研究,探索了将微生物驱油与化学驱油相结合的技术,并将该技术成功的在大港板64-28KH井应用,有效期三个月,取得了一定的增油效果。研究表明:用微生物激活剂与化学助剂复配的方法,对试验油井进行降黏,降黏率高。复合降黏作业后油藏生态环境发生变化,流体性质明显改善,有效地提高了原油采收率,并可在一定时期内提高产油量。
In the Ban-64 block of Dagang Oilfield, heavy oil reservoir has the characteristics of high density, high viscosity, and high asphahene content. It was studied to explore the combination of microbial flooding and chemical flooding technology which was successfully applied in the well Ban- 64- 28KH and valid for three months, and had achieved the increasing oil effect. The study shows that the viscosity reduction ratio of the test well is high by the method of microbial activator and chemical assistant. The reservoir ecological environment is changed, the fluid property is improved obviously, the oil recovery is improved effectively, and the oil production can be increased in a certain period.
出处
《油气藏评价与开发》
CSCD
2017年第2期70-73,共4页
Petroleum Reservoir Evaluation and Development
关键词
微生物
复合降黏
三次采油
microorganism, composite viscosity reduction, tertiary oil recovery
