The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2001
Filed:
Dec. 14, 1998
Applicant:
Inventor:
Alan Martyn Eddison, Stonehaven, GB;
Assignee:
Andergauge Limited, Scotland, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 7/08 ;
U.S. Cl.
CPC ...
E21B 7/08 ;
Abstract
Directional drilling apparatus (,) for location on a drill string (,) comprises a stabilizer (,) having a mandrel (,) for connection to the drill string (,) and an eccentric non-rotating element (,) mounted on the mandrel (,) for offsetting the string (,) in the bore (,) and a non-rotating offset mass (,) for maintaining the element (,) at a selected orientation relative to the bore (,) as the drill string (,) rotates.