Patents by Inventor Donghui LUO

Donghui LUO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • ELASTICATOR AND PREPARATION METHOD THEREOF AND CASING EXPANSION LOSS PREVENTION ELASTIC SPACER FLUID FOR CEMENTING
    Publication number: 20220259481
    Abstract: An elasticator and a preparation method thereof and a casing expansion loss prevention elastic spacer fluid for cementing are provided. The preparation method of the elasticator includes the following steps of: (1) taking polycaprolactone and an inorganic porous material for fully mixing under a heating condition to obtain a mixture; and (2) mixing the mixture with a high-elastic modulus rubber powder to obtain an elasticator.
    Type: Application
    Filed: October 21, 2020
    Publication date: August 18, 2022
    Inventors: Jiangxiong WEI, Jianglin ZHU, Yuwei LUO, Donghui LUO, Zhandong LI, Huan CAO, Haoliang HUANG, Yuchang HE