公开(公告)号：EP2914781A1

公开(公告)日：2015-09-09

申请号：EP12813017.6

申请日：2012-12-21

申请人： Soletanche Freyssinet SA

发明人： BARISON, Luca ,  GOFF, Larry ,  LEFEBVRE, Laurent ,  ENGLAND, Steve ,  GABALDO, Stefano ,  JUSTASON, Michael

IPC分类号： E02D5/46

CPC分类号： E21B21/12 ,  E02D5/46 ,  E21B17/18 ,  E21B21/103 ,  E21B33/138

摘要： A drilling and grouting device comprises a drill string including a hollow elongate outer rod having a central axis and a hollow elongate inner rod located coaxially within said outer rod, wherein a first outer flow path is defined between said inner and outer rod, and a first central flow path is defined inside said inner rod, a drill bit aligned with said inner rod along said central axis and including a second central flow path, and a crossover part interposed between said inner rod and said drill bit along said central axis, which is configured to connect the first central flow path with a second outer flow path surrounding the drill bit to form a main path and to connect said first outer flow path with said second central flow path to form a secondary path. Also disclosed are systems and methods that include and use the device.

公开(公告)号：EP2914781B1

公开(公告)日：2017-03-01

申请号：EP12813017.6

申请日：2012-12-21

申请人： Soletanche Freyssinet SA

发明人： BARISON, Luca ,  GOFF, Larry ,  LEFEBVRE, Laurent ,  ENGLAND, Steve ,  GABALDO, Stefano ,  JUSTASON, Michael

IPC分类号： E02D5/46

CPC分类号： E21B21/12 ,  E02D5/46 ,  E21B17/18 ,  E21B21/103 ,  E21B33/138

摘要： A drilling and grouting device comprises a drill string including a hollow elongate outer rod having a central axis and a hollow elongate inner rod located coaxially within said outer rod, wherein a first outer flow path is defined between said inner and outer rod, and a first central flow path is defined inside said inner rod, a drill bit aligned with said inner rod along said central axis and including a second central flow path, and a crossover part interposed between said inner rod and said drill bit along said central axis, which is configured to connect the first central flow path with a second outer flow path surrounding the drill bit to form a main path and to connect said first outer flow path with said second central flow path to form a secondary path. Also disclosed are systems and methods that include and use the device.

摘要翻译： 钻井和灌浆装置包括钻柱，其包括具有中心轴线的中空细长外杆和同轴地位于所述外杆内的中空细长内杆，其中在所述内杆和外杆之间限定第一外流动通道， 中心流动路径被限定在所述内杆的内部，钻头沿着所述中心轴线与所述内杆对准并且包括第二中心流动路径，以及沿着所述中心轴线插入所述内杆和所述钻头之间的交叉部分， 被配置为将所述第一中心流动路径与围绕所述钻头的第二外部流动路径连接以形成主路径并且将所述第一外部流动路径与所述第二中心流动路径连接以形成次级路径。 还公开了包括和使用该设备的系统和方法。