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:
Feb. 20, 2007
Filed:
Aug. 10, 2004
Daniel Hart, Sugarland, TX (US);
Calvin Stowe, Ii, West University Place, TX (US);
Trung Huynh, Houston, TX (US);
Roy E. Swanson, Sugarland, TX (US);
Rustom K. Mody, Bellaire, TX (US);
Jack T. Oldham, Willis, TX (US);
Jeffrey Lund, The Woodlands, TX (US);
Lawrence Allen Sinor, Conroe, TX (US);
Robert A. Laing, Montgomery, TX (US);
Daniel Hart, Sugarland, TX (US);
Calvin Stowe, II, West University Place, TX (US);
Trung Huynh, Houston, TX (US);
Roy E. Swanson, Sugarland, TX (US);
Rustom K. Mody, Bellaire, TX (US);
Jack T. Oldham, Willis, TX (US);
Jeffrey Lund, The Woodlands, TX (US);
Lawrence Allen Sinor, Conroe, TX (US);
Robert A. Laing, Montgomery, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A method and apparatus for running a whipstock into a well bore attached to a combination mill and drill bit, releasing the mill/bit from the whipstock, milling a window in the casing, and drilling a lateral well bore, all in one trip. The mill/bit is provided with a primary cutting structure better suited for milling through the casing, and a secondary cutting structure, better suited for drilling through the earth formation. The secondary cutting structure is initially smaller in diameter than the primary cutting structure. The whipstock can be attached to the mill/bit with a shear bolt supported by a boss on the whipstock, with the boss designed to arrest axial motion of the mill/bit after shearing of the bolt.