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:
Nov. 08, 2016
Filed:
Apr. 20, 2012
Malcolm E. Whittaker, Houston, TX (US);
Malcolm E. Whittaker, Houston, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
The present disclosure provides a method of manufacturing a polycrystalline diamond (PCD) cutting element used as drill bit cutting elements (). The method includes leaching a PCD body formed from diamond particles () using a binder-catalyzing material so as to remove substantially all of the binder-catalyzing material from portions of a cutting surface of the PCD body. A portion () of the cutting surface is identified as a cutting area which, in use of the cutting element to cut material, is heated by the cutting action of the cutting element. Leaching of the PCD body includes performing a relatively deep leach in the portion of the cutting surface identified as the cutting area and performing a relatively shallow leach in at least the portion () of the cutting surface surrounding the identified cutting area.