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:
Aug. 15, 1995
Filed:
Oct. 20, 1993
Applicant:
Inventor:
Philip F Head, London, GB;
Assignee:
Transocean Petroleum Technology AS, Tananger, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
175 74 ; 175 45 ; 175 75 ; 175320 ; 166237 ; 166384 ;
Abstract
The invention relates to a directional drilling tool for use in controlled directional drilling. The drilling tool comprises two parts which are moveable relative to each other either in the horizontal or vertical planes. Cam surfaces are provided between the two parts for adjustments to the drilling direction in the vertical plane. A slot and groove mechanism is provided between the two as an example of adjustments in the horizontal plane. In each case hydraulic pressure is the preferred means of controlling the adjustments said controlling means being independent of the other well operations.