Patent · US Active

Drill bit with self-adjusting pads

US9708859B2 · kind B2 · utility

21Cited by

13References

14Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

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

Key dates

Filing date	Oct 16, 2014
Grant date	Jul 18, 2017
Priority date	—
Expiry date	Sep 1, 2035

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/627
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drill bit includes a bit body; a pad associated with the bit body; 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.