公开(公告)号：US06719061B2

公开(公告)日：2004-04-13

申请号：US10165444

申请日：2002-06-07

申请人： Laurent E. Muller ,  Larry L. Grigar ,  Steven W. Henderson ,  Klaus B. Huber ,  Bennie C. Gill ,  Rolf Ludolf ,  Gary L. Rytlewski

发明人： Laurent E. Muller ,  Larry L. Grigar ,  Steven W. Henderson ,  Klaus B. Huber ,  Bennie C. Gill ,  Rolf Ludolf ,  Gary L. Rytlewski

IPC分类号： E21B3406

CPC分类号： E21B33/068

摘要： Well surface equipment is provided to seal around the outer surface of portions of tool sections as the tool sections are assembled or disconnected in a portion of the well surface equipment. The portion of the well surface equipment is isolated from wellhead pressure to enhance well operator control during assembly or disassembly of a tool string. Also, if a fluid path is opened up due to activation of the tool string (such as initiation of a detonating cord that is placed in the fluid path), a barrier mechanism is actuated to block fluid communication through this fluid path so that a portion of the well surface equipment can remain isolated from wellhead pressure to enable convenient retrieval and disconnection of tool sections.

摘要翻译： 当井表面设备的一部分中组装或断开工具部分时，提供井表面设备来密封工具部分的外表面周围。 井表面设备的部分与井口压力隔离，以在组装或拆卸工具串时提高操作员的操控性。 此外，如果由于工具串的激活（例如引导放置在流体路径中的引爆绳）打开流体路径，则启动阻挡机构以阻止通过该流体路径的流体连通，使得部分 的井表面设备可以与井口压力保持隔离，以便于工具部分的方便检索和断开。