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. 23, 1994
Filed:
Apr. 14, 1993
Mark D Mueller, Bakersfield, CA (US);
Union Oil Company of California, Los Angeles, CA (US);
Abstract
Rotary drag during drilling is reduced by 1) adding roller bearings to a tubular string and drill bit, and/or 2) adding a bearing assembly to the tubular string, and/or 3) adding a rotary discoupling tool to the tubular string. At the drill bit, this is achieved by miniature rollers built into the gauge section. Along the drill string periodic roller bearings or bearing standoff assemblies are placed along the string length and/or a rotary discoupling tool capable of sealing fluid and transmitting compression and tensile loads is placed in the string. The combination minimizes bit whirl and rotational drag, especially during the drilling of extended reach wellbores.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile