摘要
针对裂缝性低渗油藏水驱开发中水窜严重的问题,开展了氮气泡沫调驱技术研究。采用实验和数值模拟相结合的方法研究了氮气泡沫对裂缝性低渗油藏的封堵性能和驱油性能。结果表明,氮气泡沫调驱"控水增油"效果显著,可以有效的封堵裂缝通道,扩大驱替流体的波及体积,提高裂缝性油藏的采收率。氮气泡沫调驱可在水驱基础上提高采收率10%以上,并且注入方式多样,易于现场施工,适用于裂缝性低渗油藏开发中后期提高采收率。
Water channeling is a serious problem during the water flooding of naturally fractured low-permeability reservoir. To solve the problem, nitrogen foam profile control and displacement technology were researched applying both experimental and simulation methods. The sealing capacity and oil-displacement capacity of nitrogen foam were the main research objects. The results showed that nitrogen foam could reduce water cut and increase oil recovery significantly. After plugging the interconnected fracture, the swept volume of flooding liquid and oil recovery would be increased obviously. In the experimental research, oil recovery efficiency was increased by more than 10~ after injection of nitrogen foam. The injection of nitrogen foam was flexile and convenient when applied in field construction, and the nitrogen foam profile control and displacement technology were suitable for EOR of naturally fractured low-permeability reservoirs.
出处
《石油化工高等学校学报》
CAS
2016年第1期31-34,共4页
Journal of Petrochemical Universities
基金
中石化油气开发重要先导项目(KF-2010-18)
关键词
裂缝
低渗
氮气泡沫
调驱
Fracture
Low-permeability
Nitrogen foam
Profile control and displacement
