井筒效应 meaning in English

borehole effect

Water shutoff agent dsz - a is composed of inorganic particle . its specialities are low cost , easily flow , high strength and long valid period . the agent suits non - selective water shutoff in sand formation . dsz - a not only can plug high water - bearing formation , but also can plug case leakage . dsz - a has been applied on site and gotten good effect . it is a agent which has wide prospect
石油界一直十分关注大位移斜井压裂中的近井筒效应问题.文中对近井简效应、支撑剂段塞减小近井筒效应的机理、支撑剂段塞参数的选取等问题进行了阐述.支撑剂段塞技术在中原油田大位移斜井压裂中进行了应用,取得了较好的应用效果,展示了良好的应用前景