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:
Feb. 16, 2021
Filed:
May. 28, 2015
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Zachary Ryan Murphree, Dallas, TX (US);
Andy Cheng Chang, Houston, TX (US);
Gagan Saini, Conroe, TX (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/567 (2006.01); E21B 10/46 (2006.01); C22C 29/08 (2006.01); C22C 1/10 (2006.01); B22F 3/15 (2006.01); B22F 5/00 (2006.01); B22F 7/06 (2006.01); B23P 15/30 (2006.01); E21B 10/02 (2006.01); C22C 26/00 (2006.01);
U.S. Cl.
CPC ...
C22C 29/08 (2013.01); B22F 3/15 (2013.01); B22F 5/003 (2013.01); B22F 7/06 (2013.01); B23P 15/30 (2013.01); C22C 1/1084 (2013.01); E21B 10/02 (2013.01); E21B 10/46 (2013.01); E21B 10/567 (2013.01); B22F 2005/001 (2013.01); B22F 2202/15 (2013.01); B22F 2999/00 (2013.01); C22C 2026/006 (2013.01); C22C 2204/00 (2013.01);
Abstract
Induced material segregation methods of manufacturing a polycrystalline diamond compact (PDC) cutter result in formation of a polycrystalline diamond/tungsten carbide (WC) composite material having a smooth compositional gradient from maximum WC concentration at one face to maximum diamond concentration at another face. Because the compositional gradient is smooth, very little or no mismatch of coefficient of thermal expansion occurs, which improves a service lifetime of the PDC cutter.