公开(公告)号：US20140151127A1

公开(公告)日：2014-06-05

申请号：US14122079

申请日：2012-05-24

申请人： FLEXIDRILL LIMITED

发明人： Gregory Donald West ,  Peter Evan Powell

IPC分类号： E21B4/16 ,  F01C1/10 ,  E21B4/06 ,  E21B34/10 ,  E21B4/02

CPC分类号： E21B4/16 ,  E21B4/02 ,  E21B4/06 ,  E21B34/10 ,  F01C1/101

摘要： The use in a drillstring of a positive displacement motor (PDM) with both an output upwardly and an output downwardly to devices spaced at least by the PDM.

摘要翻译： 在正位移电动机（PDM）的钻柱中使用，输出向上和向下输出到至少由PDM分隔的装置。

公开(公告)号：US09803441B2

公开(公告)日：2017-10-31

申请号：US14438743

申请日：2013-11-08

申请人： Flexidrill Limited

发明人： Gregory Donald West

IPC分类号： E21B10/02 ,  E21B25/10 ,  E21B25/00 ,  E21B6/00 ,  E21B1/00 ,  E21B25/02 ,  E21B6/04

CPC分类号： E21B25/10 ,  E21B1/00 ,  E21B6/00 ,  E21B6/04 ,  E21B10/02 ,  E21B25/00 ,  E21B25/02

摘要： A retrievable core sampling assembly for latching to or relative to a rotatable tubular housing of a core sampling apparatus to allow the capture and retrieval of a core from a subterranean formation, the assembly comprising or including: a core catcher barrel for a core, the barrel being rotationally isolated from the tubular housing and cooperable with a core taking bit coupled to the rotatable tubular housing to retain a core, and a hammer for providing impact to the core taking bit along a longitudinal impact path that is or is substantially decoupled from the core catcher barrel so that when latched, rotation and impact of the core taking bit captures and passes core material from the formation to the core catcher barrel in manner that isolates a core in the core catcher barrel from rotation and impact forces.

公开(公告)号：US20140332278A1

公开(公告)日：2014-11-13

申请号：US14366377

申请日：2012-12-18

申请人： FLEXIDRILL LIMITED

发明人： Gregory Donald West ,  Mark Christopher Cunliffe

IPC分类号： E21B7/24 ,  E21B10/36 ,  E21B1/02

CPC分类号： E21B7/24 ,  E21B1/02 ,  E21B6/04 ,  E21B10/36 ,  E21B28/00

摘要： Apparatus, methods and uses that allow extended reach drilling by virtue of the provision in the drillstring and to downhole tools collective vibrations, not tuned specifically to a single resonant frequency, from a hammer assembly that provides vibrations of different frequency ranges.

摘要翻译： 装置，方法和用途，其通过提供钻柱和井下工具允许从提供不同频率范围的振动的锤组件而将未特别调谐到单个谐振频率的集体振动允许扩展到达钻孔。

公开(公告)号：US11136845B2

公开(公告)日：2021-10-05

申请号：US16466502

申请日：2017-11-23

申请人： FLEXIDRILL LIMITED

发明人： Gregory Donald West ,  Owen Schicker

IPC分类号： E21B25/00 ,  E21B4/02 ,  E21B10/02 ,  E21B25/10 ,  E21B10/60 ,  E21B7/06

摘要： In one aspect the present invention comprises a wireline retrievable coring apparatus for incorporation into a drillstring, comprising: a housing for coupling to a drill string housing, a drill bit, a turbine comprising a stator coupled to the housing and a rotor within the stator, the rotor coupled to rotate the drill bit, a core barrel through the turbine and in communication with the drill bit for capturing a core, a fluid path to the drill bit via the turbine to rotate the turbine, wherein the core barrel is rotationally isolated from the rotor and is fluidly isolated from the fluid path.