The main purpose layer of horizontal well development in Changqing oilfield is Yanchang Formation,which belongs to the low permeability tight reservoir,and the proportion of horizontal Wells in the long horizontal well development is increasingly large,so it is difficult to develop,requiring fractu-ring or other means to improve the recovery rate.After the analysis and study of the formation characteris-tics of Longdong block and the technical difficulties of the horizontal well of the horizontal block,the tech-nical scheme suitable for the horizontal well of the block was explored,the cement slurry system and tools to ensure the cementing quality were selected,and the corresponding technical countermeasures were for-mulated to ensure the cementing quality of the horizontal well.
关键词
固井/长水平段/水泥浆体系/漂浮接箍
Key words
Cementing/Long horizontal section of cement/Slurry system/Floating hoop
维普
万方数据