DRIVEN LATCH MECHANISM专利检索- .不抽出钻管便可插入井眼或从井眼中移出的岩心接收器专利检索查询-专利查询网

DRIVEN LATCH MECHANISM
申请号	EP10822658	申请日	2010-10-07	公开(公告)号	EP2486223A4	公开(公告)日	2017-08-09
申请人	LONGYEAR TM INC;			发明人	DRENTH CHRISTOPHER L; IONDOV GEORGE; IBRAHIM GEORGE;
摘要	Implementations include a core barrel assembly having a driven latch mechanism. The driven latch mechanism can lock the core barrel assembly axially and rotationally relative to a drill string. The driven latch mechanism can include a plurality of wedge members positioned on a plurality of driving surfaces. Rotation of the drill string can cause the plurality of wedge members to wedge between an inner diameter of the drill string and the plurality of driving surfaces, thereby rotationally locking the core barrel assembly relative to the drill string. Implementations of the present invention also include drilling systems including such driven latch mechanisms, and methods of retrieving a core sample using such drilling systems.
权利要求
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