Vibration damper systems for drilling with casing

US7409758B2 · kind B2 · utility

Assignee

• Weatherford/Lamb, Inc. · US

Inventors

• Tuong Thanh Le · Houston, US
• Richard L. Giroux · Cypress, US
• Albert C. Odell, II · Kingwood, US
• Gary Thompson · Katy, US
• Deborah Lynn Banta · Humble, US
• Robert P. Badrak · Sugar Land, US
• Gregory G. Galloway · Conroe, US
• Mark S. Fuller · Houston, US

Key dates

• Filing date: Oct 29, 2004
• Grant date: Aug 12, 2008
• Expiry date: Jul 6, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49805
• WIPO field: Civil engineering
• WIPO sector: Other fields

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.