Inventor
YANG ZHENZHOU
CN12 patents
Patents
12 patentsUS10907416B2Feb 2, 2021
Polycrystalline diamond cutter with improved geometry for cooling and cutting evacuation and efficiency and durability
CNPC USA CORP8 citations82
US10815419B2Oct 27, 2020
Method for a fracturing fluid system at high temperatures
CNPC USA CORP1 citations71
US10450501B2Oct 22, 2019
Method for a fracturing fluid system at high temperatures
CNPC USA CORP1 citations71
US9963630B2May 8, 2018
Method for a fracturing fluid system at high temperatures
CNPC USA CORP3 citations71
US12391868B2Aug 19, 2025
Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive
CNPC USA CORP0 citations61
US12241022B2Mar 4, 2025
Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive
CNPC USA CORP0 citations61
US10829680B2Nov 10, 2020
High density and high temperature emulsifier for use in an oil based drilling fluid system
CNPC USA CORP1 citations61
US10066151B2Sep 4, 2018
Method for a fracturing fluid system at high temperatures
CNPC USA CORP1 citations61
US12448863B2Oct 21, 2025
Molded articles of modified polyglycolic acid for degradable downhole tools application
CNPC USA CORP0 citations59
US11459502B2Oct 4, 2022
Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive
CNPC USA CORP0 citations50
US10280357B2May 7, 2019
High density and high temperature emulsifier for use in an oil based drilling fluid system
CNPC USA CORP0 citations50
US9909050B2Mar 6, 2018
High density and high temperature emulsifier for use in an oil based drilling fluid system
CNPC USA CORP1 citations50