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:
Sep. 07, 2021
Filed:
Jan. 20, 2020
Wellbore Integrity Solutions Llc, Houston, TX (US);
Manoj D. Mahajan, Houston, TX (US);
Charles H. Dewey, Houston, TX (US);
Shantanu N. Swadi, Cypress, TX (US);
Walter E. Friedl, The Woodlands, TX (US);
Christopher Kang Potter, The Woodlands, TX (US);
Alan Fairweather, Aberdeen, GB;
Kenneth Daniel Hora, Houston, TX (US);
Wellbore Integrity Solutions LLC, Houston, TX (US);
Abstract
Milling systems, tools, and methods include using a mill with secondary attrition system to re-mill cuttings and other debris away from the face of the mill. The secondary attrition system may be located uphole of the mill may be used to stage conditioning and re-sizing of debris. After debris is generated by the mill, the secondary attrition system may re-mill the debris to a finer size before allowing the debris to pass out of the sleeve. The debris may be re-milled by secondary cutting elements while within an annular gap positioned radially between the sleeve and a drive shaft for the mill. The annular gap may have a variable width as a result of a tapered outer surface of the drive shaft and/or a tapered inner surface of the sleeve. The variable width may cause debris to be re-milled into increasingly finer sizes.