公开(公告)号：US06554076B2

公开(公告)日：2003-04-29

申请号：US09784650

申请日：2001-02-15

申请人： Brett Guillory ,  Chris Cuffe ,  Mike Betik ,  Mike Dion ,  Ken Whanger

发明人： Brett Guillory ,  Chris Cuffe ,  Mike Betik ,  Mike Dion ,  Ken Whanger

IPC分类号： E21B3312

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 utilized to circulate or reverse circulate a fluid. In one embodiment, the present apparatus comprises a first tubular subunit and a second tubular subunit moveably coupled together, a flexible packing element 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. The valve may be selectively opened to allow fluid to flow between the annular space and the central bore of the valve.

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，本装置包括可移动地联接在一起的第一管状子单元和第二管状子单元，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，以及适于限制第一管状子单元和 所述第二管状亚单元压缩所述柔性包装元件，其中所述临时机械连接适于液压地脱开。 在另一个实施例中，本发明的装置还包括阀。 阀可以选择性地打开以允许流体在环形空间和阀的中心孔之间流动。