Patent · US Active

Downhole lubrication system

US8020637B2 · kind B2 · utility

3Cited by

28References

19Claims

0Family size

Assignee

SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

David R. Hall · Provo, US
Francis Leany · Salem, US
Michael Beazer · Provo, US
Casey Webb · Spanish Fork, US

Key dates

Filing date	Jun 30, 2009
Grant date	Sep 20, 2011
Priority date	—
Expiry date	Jun 30, 2029

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/24
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

What is claimed is a downhole lubrication system comprising a drill string component comprising an outer diameter and an inner bore. A reservoir may be disposed intermediate the outer diameter and inner bore. A piston may be disposed at least partially within the reservoir. At least one channel may extend from the reservoir to a bearing surface. As drilling fluid is passed through the inner bore, the piston may be pressurized, urging lubricant toward the bearing surface via the at least one channel.

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