发明名称 |
conjunto de ponta de lança articulada, e, sistema e método de perfuração |
摘要 |
A jointed spearhead assembly can include a base portion that is adapted to be connected to a down-hole object and a spearhead portion having a first end and a second. The second end includes a follower tab with a non-convex first follower interface. The spearhead portion can be pivotally coupled to the base portion. |
申请公布号 |
BRPI0911057(A2) |
申请公布日期 |
2015.12.29 |
申请号 |
BR2009PI11057 |
申请日期 |
2009.05.15 |
申请人 |
LONGYEAR TM, INC |
发明人 |
ANTHONY LACHANCE;CHRISTOPHER L. DRENTH;GEORGE IBRAHIM |
分类号 |
E21B23/14;E21B25/02;E21B25/14 |
主分类号 |
E21B23/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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