Title:
TUBULAR CUTTING WITH DEBRIS FILTRATION
Document Type and Number:
WIPO Patent Application WO/2012/158370
Kind Code:
A4
Abstract:
A cut and pull spear is configured to obtain multiple grips in a tubular to be cut under tension. The slips are set mechanically with the aid of drag blocks to hold a portion of the assembly while a mandrel is manipulated. An annular seal is set in conjunction with the slips to provide well control during the cut. An internal bypass around the seal can be in the open position to allow circulation during the cut. The bypass can be closed to control a well kick with mechanical manipulation as the seal remains set. If the tubular will not release after an initial cut, the spear can be triggered to release and be reset at another location. The mandrel is open to circulation while the slips and seal are set and the cut is being made. Cuttings are filtered before entering the bypass to keep the cuttings out of the blowout preventers.
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Inventors:
CROW STEPHEN L (US)
HENDRIK MARCELLE H (US)
NORDENSTAM ERIK V (US)
GUIDRY CHRISTOPHER W (US)
HENDRIK MARCELLE H (US)
NORDENSTAM ERIK V (US)
GUIDRY CHRISTOPHER W (US)
Application Number:
PCT/US2012/036517
Publication Date:
February 21, 2013
Filing Date:
May 04, 2012
Export Citation:
Assignee:
BAKER HUGHES INC (US)
CROW STEPHEN L (US)
HENDRIK MARCELLE H (US)
NORDENSTAM ERIK V (US)
GUIDRY CHRISTOPHER W (US)
CROW STEPHEN L (US)
HENDRIK MARCELLE H (US)
NORDENSTAM ERIK V (US)
GUIDRY CHRISTOPHER W (US)
International Classes:
E21B23/01; E21B29/00; E21B43/10
Attorney, Agent or Firm:
PORTER, André, J. (P.O. Box 4740Houston, TX, US)
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