公开(公告)号：EP2561173A4

公开(公告)日：2017-06-21

申请号：EP11772737

申请日：2011-04-21

申请人： NAT OILWELL VARCO LP

发明人： MULDER RENE ,  KRIJNEN ANTON ,  DE KEIJZER NIELS ,  VERHOEF RICHARD

IPC分类号： E21B19/10

CPC分类号： E21B19/10

摘要： A clamping device for supporting a well string in a borehole includes a base plate with a central opening and primary clamp body clamp body supported for linear motion relative to the base plate. The clamping device further includes other clamp bodies supported for independent linear motion relative to the base plate. In certain embodiments, the clamping bodies are supported for pivoting motion to open and close the central opening. Each of the clamp bodies carries a gripping member on a face thereof for engaging a well string component received in the central opening. A drive mechanism is coupled to the clamp bodies and configured to move the clamp bodies relative to the base plate.

摘要翻译： 一种用于将钻柱支承在钻孔中的夹紧装置包括具有中心开口的基板和被支承为相对于基板线性运动的主夹紧体夹紧体。 夹紧装置还包括其他夹紧体，其被支撑用于相对于基板的独立线性运动。 在某些实施例中，夹持体被支撑用于枢转运动以打开和关闭中央开口。 每个夹具主体在其面上承载夹持构件，用于接合容纳在中央开口中的钻柱部件。 驱动机构联接到夹具本体并且构造成相对于基板移动夹具本体。