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:
Aug. 12, 2008
Filed:
Oct. 29, 2004
Tuong Thanh Le, Katy, TX (US);
Richard L. Giroux, Cypress, TX (US);
Albert C. Odell, Kingwood, TX (US);
Gary Thompson, Katy, TX (US);
Deborah L. Banta, Houston, TX (US);
Robert P. Badrak, Sugar Land, TX (US);
Gregory G. Galloway, Conroe, TX (US);
Mark S. Fuller, Montgomery, TX (US);
Tuong Thanh Le, Katy, TX (US);
Richard L. Giroux, Cypress, TX (US);
Albert C. Odell, Kingwood, TX (US);
Gary Thompson, Katy, TX (US);
Deborah L. Banta, Houston, TX (US);
Robert P. Badrak, Sugar Land, TX (US);
Gregory G. Galloway, Conroe, TX (US);
Mark S. Fuller, Montgomery, TX (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
Apparatus and methods are provided for reducing drilling vibration during drilling with casing. In one embodiment, an apparatus for reducing vibration of a rotating casing includes a tubular body disposed concentrically around the casing, wherein tubular body is movable relative to the casing. Preferably, a portion of the tubular body comprises a friction reducing material. In operation, the tubular body comes into contact with the existing casing or the wellbore instead of the rotating casing. Because the tubular body is freely movable relative to the rotating casing, the rotating casing may continuously rotate even though the tubular body is frictionally in contact with the existing casing.