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[期刊论文] 作者:MaJie,LiJianping,
来源:黑龙江科技学院学报 年份:2007
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7...
A NEW PDC BIT TECHNOLOGY,INNOVATIVE CUTTING STRUCTURE DESIGN OVERCOME SUPER-TOUGH DRILLING CHALLENGE
[会议论文] 作者:YangYing-Xin;ZengHeng;MaJie;ZhangLiang;HeXin;FanXiao-Le;,
来源:INternational Conference on Product Design and Manufacturing 年份:2007
Hard formations,especially gravel layers with high compressive strength and abrasion,are generally not suitable for PDC bit application.Under such extreme c...
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