大庆低渗透油田增效压裂技术研究

Study of extended fracturing technology for Daqing low permeability oilfield

针对大庆长垣外围低渗透油田地质条件复杂、选井选层难度大、压裂经济效益差等问题,从分析低渗透油田压裂改造难点入手,找出影响压裂效果的关键因素,应用测井曲线,确定垂直缝高度及裂缝延伸类型,对不同类型采取相应措施,实现了单层个性化设计。现场实施后,取得了较好的效果。

The peripheral low permeability oilfield in Changyuan of Daqing is geologically complicated, difficult to select well and layer, and has poor fracturing benefit. The key factors affecting postfracture response are analyzed by starting with the difficulty of fracturing stimulation. Vertical fracture height and fracture extension type are determined with logging curves. Suitable measures are used for different layers. Field application has shown good result, thus providing valuable experience to similar oilfield fracturing.