Abstract: Systems and methods include a computer-implemented method can be used to make drilling tools from new wurtzite boron nitride (w-BN) superhard material. An ultra-high-pressure, high-temperature operation is performed on pure w-BN powder to synthesize w-BN and cubic boron nitride (c-BN) compact having a first size greater than particles of the pure w-BN powder. The ultra-high-pressure, high-temperature operation includes pressurizing the w-BN powder to a pressure of approximately 20 Gigapascal, heating the w-BN powder at a heating rate of 100° C./minute and cooling the w-BN powder at a cooling rate of 50° C./minute. The compact is cut to a second size smaller than the first size using laser cutting tools. The cut compact is bonded metallurgically, mechanically, or both metallurgically and mechanically onto a tool substrate to form the drilling tool.
Type:
Grant
Filed:
May 10, 2021
Date of Patent:
January 9, 2024
Assignees:
Saudi Arabian Oil Company, Chengdu Dongwei Technology Co., LTD
Inventors:
Guodong Zhan, Timothy E. Moellendick, Bodong Li, Duanwei He
Abstract: Cutters for a downhole drill bit can be formed by providing a catalyst-free synthesized polycrystalline diamond (PCD) having a cross-sectional dimension of at least 8 millimeters; providing a substrate comprising tungsten carbide; and attaching the synthesized PCD to the substrate comprising tungsten carbide to form a PDC cutter.
Type:
Application
Filed:
March 13, 2023
Publication date:
July 6, 2023
Applicants:
Saudi Arabian Oil Company, Chengdu Dongwei Technology Co., Ltd.
Inventors:
Guodong Zhan, Timothy E. Moellendick, Duanwei He, Jianhui Xu
Abstract: Cutters for a downhole drill bit can be formed by providing a catalyst-free synthesized polycrystalline diamond (PCD) having a cross-sectional dimension of at least 8 millimeters; providing a substrate comprising tungsten carbide; and attaching the synthesized PCD to the substrate comprising tungsten carbide to form a PDC cutter.
Type:
Application
Filed:
June 2, 2021
Publication date:
December 2, 2021
Applicants:
Saudi Arabian Oil Company, Chengdu Dongwei Technology Co., LTD
Inventors:
Guodong Zhan, Timothy E. Moellendick, Bodong Li, Chinthaka Pasan Gooneratne, Duanwei He
Abstract: Systems and methods include a computer-implemented method can be used to make drilling tools from new wurtzite boron nitride (w-BN) superhard material. An ultra-high-pressure, high-temperature operation is performed on pure w-BN powder to synthesize w-BN and cubic boron nitride (c-BN) compact having a first size greater than particles of the pure w-BN powder. The ultra-high-pressure, high-temperature operation includes pressurizing the w-BN powder to a pressure of approximately 20 Gigapascal, heating the w-BN powder at a heating rate of 100° C./minute and cooling the w-BN powder at a cooling rate of 50° C./minute. The compact is cut to a second size smaller than the first size using laser cutting tools. The cut compact is bonded metallurgically, mechanically, or both metallurgically and mechanically onto a tool substrate to form the drilling tool.
Type:
Application
Filed:
May 10, 2021
Publication date:
December 2, 2021
Applicants:
Saudi Arabian Oil Company, Chengdu Dongwei Technology Co., LTD
Inventors:
Guodong Zhan, Timothy E. Moellendick, Bodong Li, Duanwei He