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. 20, 2001
Filed:
Dec. 18, 1998
William N. Schoeffler, Lafayette, LA (US);
Quantum Drilling Motors, Inc., Lafayette, LA (US);
Abstract
The apparatus serves as a length of drill string and has a valve actuatable from the surface that restricts the drilling fluid channel to produce a pressure drop within the apparatus. The pressure drop is used to move a piston which moves a side loading element against a well bore wall to urge the drill string toward the opposite wall to cause a progressing drill head to change direction. The housing that carries the side load element has a clutch that rotationally disengages the housing from the drill string when the element is extended. The drill string can drill as a rotary system while the side loading element is stationary relative to earth.