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:
May. 26, 1992
Filed:
Oct. 19, 1990
Applicant:
Inventors:
Charles G Brunet, Lafayette, LA (US);
Gilles E Labbee, Spring, TX (US);
Jay W McGee, Houston, TX (US);
Assignee:
Anglo Suisse, Inc., Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175 61 ; 1661175 ; 166 50 ; 175 82 ;
Abstract
A directional drilling apparatus for drilling offset wellbores from a main borehole using a steering tool to orient a guidance tool body and wherein the tool body has a pair of angularly intersecting passageways including a first smaller passageway that communicates with a packer, and a second larger passageway that cradles a smaller drill string for drilling the offset boreholes and wherein the smaller drill string will not fit in the first smaller passageway.