摘要 |
The present invention provides an apparatus and method for severing casing as it is pulled from a wellbore. An apparatus (100) is provided, comprising a clamping assembly (130), a drilling assembly (150) and a cutting assembly (120). In one aspect, the apparatus is disposed at the end of a telescopic arm (110), with the components being remotely operated by personnel using a control panel (125). The apparatus can be positioned adjacent casing (200') and clamped thereto. Thereafter, the apparatus can drill a hole completely through the casing for the insertion of a retention pin. The apparatus can then severe the casing into manageable lengths to facilitate disposal, such as during a plugging and abandonment procedure. |
申请人 |
WEATHERFORD/LAMB, INC.;HARDING, RICHARD, PATRICK;FOTLAND, PER;AKERLUND, TOR, JAN |
发明人 |
HARDING, RICHARD, PATRICK;FOTLAND, PER;AKERLUND, TOR, JAN |