Optimized placement of vibration damper tools through mode-shape tuning

US11692404B2 · kind B2 · utility

Assignee

• Baker Hughes Oilfield Operations LLC · US

Inventors

• Volker Peters · Celle, DE
• Hanno Reckmann · Wathlingen, DE
• Andreas Hohl · Hannover, DE
• Armin Kueck · The Woodlands, US
• Christian Herbig · Sulingen, DE
• Dennis Heinisch · Gockenholz, DE
• Mathias Tergeist · Celle, DE
• Sui-Long Lam · Borstel, DE
• Vincent Kulke · Borstel, DE

Key dates

• Filing date: Sep 11, 2020
• Grant date: Jul 4, 2023
• Expiry date: Apr 20, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F2238/024
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Systems and methods for damping torsional oscillations of downhole systems are described. The systems include a downhole drilling system disposed at an end of the downhole system in operative connection with a drill bit. A damping system is installed on the downhole drilling system, the damping system having at least one damper element configured to dampen at least one HFTO mode. At least one mode-shape tuning element is arranged on the drilling system. The at least one mode-shape tuning element is configured and positioned on the drilling system to modify at least one of a shape of the HFTO mode, a frequency of the HFTO mode, an excitability of the HFTO mode, and a damping efficiency of the at least one damper element.