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:
May. 29, 2018
Filed:
Dec. 30, 2013
Applicant:
National Oilwell Varco, L.p., Houston, TX (US);
Inventors:
Russell Gilleylen, Spring, TX (US);
Guodong Zhan, Spring, TX (US);
Sean Donald, Spring, TX (US);
Haresh Ghansyam, Pearland, TX (US);
James R. Streater, Humble, TX (US);
Adondria M. Parker, Houston, TX (US);
Assignee:
NATIONAL OILWELL VARCO, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 3/06 (2006.01); E21B 10/567 (2006.01); B24D 18/00 (2006.01); C23F 1/10 (2006.01); C23F 1/08 (2006.01); C23F 1/28 (2006.01); B01J 19/24 (2006.01); B24D 99/00 (2010.01);
U.S. Cl.
CPC ...
B24D 18/0009 (2013.01); B01J 3/06 (2013.01); B01J 19/24 (2013.01); B24D 99/005 (2013.01); C23F 1/08 (2013.01); C23F 1/10 (2013.01); C23F 1/28 (2013.01); E21B 10/567 (2013.01); B01J 2219/00162 (2013.01); B01J 2219/24 (2013.01);
Abstract
A method for leaching a PCD table for a cutter element includes (a) positioning a PCD table within a leaching chamber. The method also includes (b) submerging the PCD table in an acid within the leaching chamber. In addition, the method includes (c) sealing the leaching chamber. Further, the method includes (d) increasing the pressure within the leaching chamber to a pressure greater than or equal to 20,000 psi after (c).