发明名称 |
DOWNHOLE DRILLING ASSEMBLY |
摘要 |
A downhole stabiliser (5), such as a drill motor stabiliser, comprises at least one reaming means and/or reinforcing means (10). The present invention also relates to an assembly (30), such as a downhole drilling assembly (31), comprising at least one such stabiliser (5) and/or a drill bit (40,41) comprising a gauge bit (42) at or near a drilling end (45) thereof, and a connection means (46) for connecting the drill bit (40,41) to a drill motor assembly (60), wherein the drill bit gauge (42) comprises a substantially cylindrical portion having a length less than or equal to approximately 1.0 times the nominal bit diameter. The present invention also relates to a novel locking mechanism (80), such as a lock and key mechanism, to allow locking of a shaft (70'), e.g. a motor drive shaft (71'), through or together with a stabiliser (5'). |
申请公布号 |
WO2010106335(A2) |
申请公布日期 |
2010.09.23 |
申请号 |
WO2010GB00502 |
申请日期 |
2010.03.19 |
申请人 |
TURBOPOWER DRILLING SAL;DOWNIE, ANDREW, MCPHERSON;VITALE, PASCAL, MICHEL;BOUSSI, BACHAR |
发明人 |
DOWNIE, ANDREW, MCPHERSON;VITALE, PASCAL, MICHEL;BOUSSI, BACHAR |
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