Patent · US Active

Active waterway stabilizer

US10385627B2 · kind B2 · utility

2Cited by

3References

20Claims

0Family size

Assignee

National Oilwell Varco, L.P. · US

Inventors

Michael Bailey · Carlsbad, US
Dean Waters · Stroud, GB
Stephen Williams · Sydney, AU

Key dates

Filing date	Nov 18, 2015
Grant date	Aug 20, 2019
Priority date	—
Expiry date	Nov 18, 2035

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B17/042
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A downhole tool comprises a plurality of blades that extend outward from a tool body. Each blade has an under-gauge surface with a blade diameter that is less than a gauge diameter of a drill bit to be used with the downhole tool. A waterway is defined between a pair of adjacent blades and has a waterway base that is recessed from the blade diameter. One or more waterway inserts are disposed within the waterway and extend from the waterway base. Each of the one or more waterway inserts does not extend to the blade diameter. No component of the downhole tool is positioned outside the blade diameter.

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