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2. 发明申请

WO2002064942A2 DOWNHOLE PACKER 审中-公开
标题翻译：卧式包装机
公开(公告)号：WO2002064942A2
公开(公告)日：2002-08-22
申请号：PCT/GB2002/000472
申请日：2002-02-01
申请人： WEATHERFORD/LAMB, INC. , HARDING, Richard, Patrick , GUILLORY, Brett , BETIK, Mike , WHANGER, Ken , CUFFE, Chris , DION, Mike
发明人： GUILLORY, Brett , BETIK, Mike , WHANGER, Ken , CUFFE, Chris , DION, Mike
IPC分类号： E21B33/128
CPC分类号： E21B33/127 , E21B21/103 , E21B23/02 , E21B23/06 , E21B34/103
摘要： The present invention relates to packers adapted to seal an annular space within a wellbore. The packers, for example, may be utilised to circulate or reverse circulate a fluid. In one embodiment, the present apparatus (100) comprises a first tubular subunit (102) and a second tubular subunit (103) moveably coupled together, a flexible packing element (106) disposed between the first tubular subunit and the second tubular subunit, and a temporary mechanical connection adapted to restrain the first tubular subunit and the second tubular subunit from compressing the flexible packing element, in which the temporary mechanical connection is adapted to be hydraulically disengaged. In another embodiment, the present apparatus further comprises a valve (150). In one aspect, the present apparatus further comprises a cement inflation tool. In still another embodiment, the present method comprises locating an apparatus, comprising a packer and a valve positioned above the packer, at a predetermined location within the wellbore; setting the packer, the method of setting the packer comprising, applying a first hydraulic pressure within a central bore of the apparatus and applying down weight on the apparatus; and opening the valve. In one embodiment, the present method comprises actuating a displacement device to displace a fluid below a packer; setting the packer by utilising a predetermined fluid pressure to disengage a temporary mechanical connection between a first surface and a second surface of the packer and by compressing a packing element between the first surface and second surface; and opening a valve above the packer.
摘要翻译：本发明涉及适于密封井筒内的环形空间的封隔器。封隔器例如可用于循环或反向循环流体。在一个实施例中，本装置（100）包括可移动地联接在一起的第一管状子单元（102）和第二管状子单元（103），设置在第一管状子单元和第二管状子单元之间的柔性填充元件（106），以及适于限制第一管状子单元和第二管状子单元压缩柔性填充元件的临时机械连接，其中临时机械连接适于液压地脱开。在另一个实施例中，本装置还包括阀（150）。在一个方面，本发明的装置还包括水泥膨胀工具。在另一个实施例中，本方法包括在井眼内的预定位置处定位包括封隔器和位于封隔器上方的阀的装置; 设置封隔器，设置封隔器的方法包括：在设备的中心孔内施加第一液压并在设备上施加重量; 并打开阀门。在一个实施例中，本方法包括致动位移装置以使封隔器下面的流体移位; 通过利用预定的流体压力来设置封隔器，以分离封隔器的第一表面和第二表面之间的临时机械连接并且通过在第一表面和第二表面之间压缩填料元件; 并打开封隔器上方的阀门。

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