The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2014
Filed:
May. 16, 2011
Stephen L. Crow, Kingwood, TX (US);
Marcelle H. Hedrick, Kingwood, TX (US);
Erik V. Nordenstam, The Woodlands, TX (US);
Christopher W. Guidry, Spring, TX (US);
Stephen L. Crow, Kingwood, TX (US);
Marcelle H. Hedrick, Kingwood, TX (US);
Erik V. Nordenstam, The Woodlands, TX (US);
Christopher W. Guidry, Spring, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
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.