裂缝性低渗透油藏氮气泡沫调驱技术研究

Nitrogen Foam Profile Control and Displacement Technology Applied in Naturally Fractured Low Permeability Reservoir

( 中国石油大学( 华东)石油工程学院, 山东 青岛2 6 6 5 8 0)

 

(School of Petroleum Engineering, China University of Petroleum (East China), Qingdao Shandong 266580, China)

关键词: 裂缝, 低渗, 氮气泡沫, , 调驱

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.

中石化油气开发重要先导项目( K F - 2 0 1 0 - 1 8) 。

10.3969/j.issn.1006-396X.2016.01.006