Patent · US Active

Directional wellbore control by pilot hole guidance

US9080387B2 · kind B2 · utility

3Cited by

25References

18Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Philip Christof Schulte · Burgwedel, DE
Hans Oppelaar · Bergen, DE
Michael Koppe · Erfurt, DE

Key dates

Filing date	Aug 2, 2011
Grant date	Jul 14, 2015
Priority date	—
Expiry date	May 5, 2034

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B7/06
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A directional drilling apparatus include a first cutter that substantially cuts a wellbore bottom along a first axis and a second cutter that cuts the wellbore bottom along a second axis different from the first axis. The second cutter may extend an adjustable amount out of the first cutter. The pilot string may connect the second cutter to the first cutter.

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