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:
Jul. 27, 2010
Filed:
Jul. 09, 2008
James E. Saylor, Iii, Conroe, TX (US);
Thomas D. Helbert, Magnolia, TX (US);
Marc Henderson, The Woodlands, TX (US);
Joeseph V. Hebert, Tomball, TX (US);
Trygve Berthelsen, Royneberg, NO;
Randall Louis Hebert, Houma, LA (US);
Malcolm Perschke, Spring, TX (US);
A. J. Dach, Iii, Arlington, TX (US);
Harshad Patil, Houston, TX (US);
Praful C. Desai, Kingwood, TX (US);
James E. Saylor, III, Conroe, TX (US);
Thomas D. Helbert, Magnolia, TX (US);
Marc Henderson, The Woodlands, TX (US);
Joeseph V. Hebert, Tomball, TX (US);
Trygve Berthelsen, Royneberg, NO;
Randall Louis Hebert, Houma, LA (US);
Malcolm Perschke, Spring, TX (US);
A. J. Dach, III, Arlington, TX (US);
Harshad Patil, Houston, TX (US);
Praful C. Desai, Kingwood, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
Methods of removing casing from a wellbore, the method including disposing a drilling tool assembly in a wellbore, the drilling tool assembly including a cutting device, a spearing device, and a jarring device. The methods further including activating the cutting device, cutting a first casing segment, deactivating the cutting device and activating a spearing device. The method further including engaging the spearing device with the first casing segment, activating the jarring device to free the first casing segment, and removing the first casing segment from the wellbore.