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:
Mar. 10, 1992
Filed:
Sep. 24, 1990
Gary M Briggs, Houston, TX (US);
Drilex Systems, Inc., Houston, TX (US);
Abstract
A selectively adjustable double bend positive positioning directional drilling system for kickoff from a main well bore to change the directiion of drilling. The tool is selectively adjustable to facilitate running into the vertical well bore and subsequently to provide an aggressive build rate upon kickoff. The tool string incorporates a pair of kickoff pads--a lower fixed pad and an upper rotatively adjustable pad. As the tool is run into the well bore the adjustable pad is oriented away from the bend in the motor housing. Once in the hole, the string would be rotated relative to the adjustable pad by the reactive torque of the downhole motor and locked in the desired orientation. The adjustable pad incorporates an internal slot system to guide rotation and lock the pad in position. Alternatively, a single arm underreamer-type assembly could be used as the upper kickoff pad.