复合压裂技术在长庆“三低”油田的应用

Application of compound fracturing technology in oil reservoir
with low porosity, permeability and productivity of Changqing Oilfield

陈磊 畅毅 高金洪

川庆钻探公司长庆井下技术作业处，甘肃 庆阳 745113

Changqing Downhole Technology and Operation Department, Chuanqing Drilling and Exploration Company,
CNPC, Qingyang 745113, China

复合压裂技术就是将高能气体压裂和水力压裂2种技术优势互补，有效地达到增产增注的目的。8口实验井的现场统计表明，复合压裂工艺在长庆油田安塞油区和陇东油区施工成功率达到100%，有效增产率为100%。效果明显好于单一的水力压裂或高能气体压裂工艺，是有利于拓宽长庆油田“三低”油藏挖潜改造的新技术思路。

The compound fracturing technology is to make the high energy gas and hydraulic fracturing complement each other and effectively achieve the goal of increasing production and injection rate. The statistical results of eight experimental wells show that the compound fracturing technology has a success ratio of 100% and an effective oil increment rate of 100 in Ansai and Longdong Oil Region. The effect is much better than either the sole hydraulic or high energy gas fracturing technology. It is advantageous to open up the new train of thought in tapping the potential of the oil reservoir with low porosity, permeability and productivity in Changqing Oilfield.