... directional diffuseness 方向性扩散 directional drill tool 定向钻井工具 directional drilling contractor 定向钻井承包商 ...
基于60个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
Due to the increasing number of deep Wells and directional Wells being drilled, longitudinal fracture occurred on the box-ended drill pipe tool joint is often reported.
近年来由于深井、定向井等逐渐增多，油气井钻井中钻杆内螺纹接头纵向开裂失效成为常发事故。
youdao
应用推荐
模块上移
模块下移
不移动