摘要
Abstract
At the initial stage of exploration and development of Bohai A Oilfield,shallow large displacement wells are mainly used,and the upper extremely loose formation has a large deviation.It is necessary to trim the borehole wall and clean the borehole through frequent tripping operations to reduce the probability of downhole complications.However,it is easy to cause new borehole in the process of reaming and trimming the borehole wall.In view of this problem,the research is conducted from various aspects such as well loca-tion selection,trajectory design,drilling tool combination optimization,real-time simulation during drill-ing,and operational details.Finally,a new borehole prevention technology system was proposed that in-tegrates pre-drilling design optimization,fine operation during drilling,and tripping risk monitoring,which has achieved good results in the application of Bohai A Oilfield.关键词
渤海油田/新井眼/预防措施/大位移井Key words
Bohai Oilfield/new borehole/preventive measures/extended reach well分类
能源科技
