发明名称 |
EARTH REMOVAL MEMBER WITH FEATURES FOR FACILITATING DRILL-THROUGH |
摘要 |
An earth removal member with features for facilitating drill-through is provided for drilling with casing or liner applications. In one embodiment, the casing bit includes a tubular body; a nose attached to one end of the tubular body, wherein the nose includes a blade support and comprises a drillable material; a blade attached to the blade support using mating profiles; cutters disposed along the blade; and a nozzle disposed in the nose. |
申请公布号 |
EP2655784(B1) |
申请公布日期 |
2016.11.16 |
申请号 |
EP20110808800 |
申请日期 |
2011.12.21 |
申请人 |
WEATHERFORD TECHNOLOGY HOLDINGS, LLC |
发明人 |
UGWUOCHA, SHARP OKORIE;RAE, STEVEN |
分类号 |
E21B10/42;E21B10/627 |
主分类号 |
E21B10/42 |
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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