Downhole drilling assembly

专利名称：Downhole drilling assembly

发明人：Downie, Andrew McPherson,Vitale, Pascal

Michel,Boussi, Bachar

申请号：AU2015238801申请日：20151007公开号：AU2015238801A1公开日：20151029

摘要：#$%^&*AU2015238801A120151029.pdf##### - 30 Abstract A downholestabiliser, such as a drill motor stabiliser, comprises at least one reaming means and/orreinforcing means. The present invention also relates to an assembly, such as a downholedrilling assembly, comprising at least one such stabiliser and/or a drill bit comprising agauge bit at or near a drilling end thereof, and a connection means for connecting thedrill bit to a drill motor assembly, wherein the drill bit gauge comprises a substantiallycylindrical portion having a length less than or equal to approximately 1.0 times thenominal bit diameter. The present invention also relates to a novel locking mechanism,such as a lock and key mechanism, to allow locking of a shaft, e.g. a motor drive shaft,through or together with a stabiliser. Figure 6 4/6 30,31 60 5 40,41 65 50 Figure 6 42 60'65' 5' 30',31' 92 918 40',41' Figure 7 \"

申请人：Halliburton Energy Services, Inc.

代理人：Shelston IP

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