套管居中 meaning in English

casing centralization

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
河南油田焉耆盆地固井施工中存在着封固段长、上部井段因煤层造成大段"糖葫芦"井段、顶替效率低、下部井段地层流体比较活跃易窜槽等固井施工难点,通过分析、总结,采用了提高套管居中度、优化隔离液及冲洗液性能,并对原有的水泥浆体系进行改进,筛选出合适的水泥浆外加剂,较好地解决了焉耆盆地又塌又窜等因素对固井质量的影响