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, 1987
Filed:
Sep. 24, 1985
Applicant:
Inventors:
Michael D Biggs, Plano, TX (US);
Frank J Schuh, Plano, TX (US);
Assignee:
Atlantic Richfield Company, Plano, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175-7 ; 166367 ; 405195 ; 405202 ;
Abstract
A method of alleviating problems with high stresses above fatigue failure levels due to vibrations modes caused by vortex shedding during the lowering and jetting-in of a large diameter surface string in deep water having a current characterized by the inclusion of a moment reducing device in the suspension conduit holding the surface string of conduit during lowering and jetting-in. Also disclosed are preferred embodiments where the moment reducing device is either a ball joint or a flex joint.