转向压裂技术在牛圈湖油田的应用

Application of Diverting Fracturing Technique in Niujuanhu Oilfield

牛圈湖油田西山窑油藏属低压特低渗油藏,无自然产能,需超前注水提高地层压力后压裂投产。目前油田低产井所占比例较大,通过低产原因分析认为第一次压裂投产时裂缝未能沟通有效储层,通过部分油井暂堵转向压裂,有效提高了油井生产能力,取得了较好的效果,为同类油藏的措施治理提供了可借鉴的经验。

The J2x reservoir in Niujuanhu oilfield belongs to low pressure and ultra-low permeability reservoir,which has no natural productivity and needs advanced water -flooding to raise the formation pressure before fracturing production. At present, Stripper wells are taking a large proportion of the wells. The fracture does not communicate the valid reservoirs during the first fracturing production by analyzing the cause of low - production. Temporary plugging part of oil wells and turning them into fracturing wells effectively improve the well＇ s productivity, and with a good effect, which provided a reliable experience for the treatment of the same type of reservoir.