Drill bit with self-adjusting pads

US10000977B2 · kind B2 · utility

Assignee

• Baker Hughes, a GE company, LLC · US

Inventors

• Jayesh Rameshlal Jain · The Woodlands, US
• Benjamin Baxter · Houston, US
• Chaitanya K. Vempati · Conroe, US
• Steven R. Radford · Diemelstraße, US
• Volker Peters · Celle, DE
• Gregory L. Ricks · Spring, US
• Miguel Bilen · Diemelstraße, US
• Holger Stibbe · Humble, US
• David A. Curry · Princes Risborough, GB

Key dates

• Filing date: Sep 24, 2015
• Grant date: Jun 19, 2018
• Expiry date: Jun 9, 2036

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B10/627
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A drill bit includes a bit body; a pad associated with the bit body; and a rate control device coupled to the pad that extends from a bit surface at a first rate and retracts from an extended position to a retracted position at a second rate in response to external force applied onto the pad. The rate control device includes a piston for applying a force on the pad; a biasing member that applies a force on the piston to extend the pad at the first rate; a fluid chamber associated with the piston; and a pressure management device for controlling a fluid pressure within the fluid chamber.