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:
Dec. 26, 2000
Filed:
Apr. 16, 1998
Applicant:
Inventor:
Leon Van Den Steen, Rijswijk, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
3408536 ; 3408533 ; 7315247 ;
Abstract
A system for drilling a borehole in an earth formation is disclosed, the system comprising a first sub-system including a drill string extending into the borehole, and a second sub-system including a drive system for driving the drill string in rotation about the longitudinal axis thereof. Each one of said sub-systems has a rotational resonance frequency, wherein the rotational resonance frequency of the second sub-system is lower than the rotational resonance frequency of the first sub-system.
Van Den Steen, Leon. (2000). Drilling assembly with reduced stick-slip tendency (U.S. Patent No. 6166654). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6166654
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile