大庆长垣西部低渗透油田压裂工艺的改进方法

Improvement method for the fracturing technique of the low permeable oilfields in the West of Daqing Placanticle

针对大庆长垣西部低产低渗透油田地质条件复杂、压裂选井选层难度大、经济效益差等矛盾,从压裂工艺技术上进行研究, 在裂缝有效支撑、加砂程序、破胶剂追加程序、等量替挤、强制闭合、延长压裂有效期等六个方面加以完善和改进, 现场试验取得较好效果。

According to the problem of complex geologic condition,difficulty of well layer selection and low economic benefit of fracturing in low permeable oil fields in the west of Daqing Placanticline,this paper studies the fracturing technique including effective support,sand injection procedure,gel breaker superaddition procedure,same amount over squeezing,forced closure and effective period extension of the fracturing.The field test has a good effect and can provide evidence for increasing the economic benefit of the fractureing.