Patent · US Active

Automated steerable hole enlargement drilling device and methods

US9187959B2 · kind B2 · utility

17Cited by

105References

21Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Joachim Treviranus · Winsen (Aller), DE
Carsten Freyer · Celle, DE
Hans Oppelaar · Bergen, DE

Key dates

Filing date	Mar 2, 2007
Grant date	Nov 17, 2015
Priority date	—
Expiry date	Mar 2, 2027

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B47/12
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A bottom hole assembly (BHA) coupled to a drill string includes a steering device, one or more controllers, and a hole enlargement device that selectively enlarges the diameter of the wellbore formed by the drill bit. In an automated drilling mode, the controller controls drilling direction by issuing instructions to the steering device. In one arrangement, the hole enlargement device is integrated into a shaft of a drilling motor that rotates the drill bit. The hole enlargement device includes an actuation unit and an electronics package that cooperate to translate extendable cutting elements between a radially extended position and a radially retracted position. The electronics package may be responsive to a signal that is transmitted from a downhole and/or a surface location. The hole enlargement device may also include one or more position sensors that transmit a position signal indicative of a radial position of the cutting elements.

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