Patents by Inventor Jingdong Hu

Jingdong Hu 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).

  • Drilling Fluid Additive Composition Suitable for Coal-Bed Gas Wells, and Water-Based Drilling Fluid and Use Thereof
    Publication number: 20180057728
    Abstract: The present invention relates to the well drilling field in petroleum industry, in particular to a drilling fluid additive composition suitable for coal-bed gas wells, and a water-based drilling fluid and use of the water-based drilling fluid. The drilling fluid additive composition suitable for coal-bed gas wells, comprising a tackifying and shear improver, a capsulating agent, a filtrate reducer, and an amphiphobic wettability reversal agent, wherein, the tackifying and shear improver is a copolymer comprising structural units represented by formula (1), structural units represented by formula (2), and structural units represented by formula (3); the capsulating agent is a comb-like polysaccharide compound; the filtrate reducer is nanocrystalline cellulose, and the amphiphobic wettability reversal agent is a dual-cation fluorocarbon surfactant.
    Type: Application
    Filed: June 28, 2017
    Publication date: March 1, 2018
    Applicant: China University of Petroleum (Beijing)
    Inventors: Guancheng JIANG, Yinbo HE, Chong LIU, Qingying GE, Lili YANG, Yong WANG, Yongqing ZHANG, Zhaohui WANG, Lin CHENG, Jingdong HU, Deli GAO, Haifang SUN, Xi WANG
  • Drilling fluid additive composition suitable for coal-bed gas wells, and water-based drilling fluid and use thereof
    Patent number: 9902890
    Abstract: The present invention relates to the well drilling field in petroleum industry, in particular to a drilling fluid additive composition suitable for coal-bed gas wells, and a water-based drilling fluid and use of the water-based drilling fluid. The drilling fluid additive composition suitable for coal-bed gas wells, comprising a tackifying and shear improver, a capsulating agent, a filtrate reducer, and an amphiphobic wettability reversal agent, wherein, the tackifying and shear improver is a copolymer comprising structural units represented by formula (1), structural units represented by formula (2), and structural units represented by formula (3); the capsulating agent is a comb-like polysaccharide compound; the filtrate reducer is nanocrystalline cellulose, and the amphiphobic wettability reversal agent is a dual-cation fluorocarbon surfactant.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: February 27, 2018
    Assignee: China University of Petroleum (Beijing)
    Inventors: Guancheng Jiang, Yinbo He, Chong Liu, Qingying Ge, Lili Yang, Yong Wang, Yongqing Zhang, Zhaohui Wang, Lin Cheng, Jingdong Hu, Deli Gao, Haifang Sun, Xi Wang
  • Drilling fluid additive composition and water-based drilling fluid suitable for high-pressure plugging
    Patent number: 9890318
    Abstract: The present invention relates to the well drilling field in petroleum industry, in particular to a drilling fluid additive composition and a water-based drilling fluid suitable for high pressure plugging while drilling. The composition contains a bridging agent, a nano-plugging agent, a rheological modifier, a bionic wall bracing agent, and a bionic shale inhibitor, wherein, the bridging agent is a weak-crosslinked copolymer, in which the content of cross-linker structures is 0.1-1 wt. %; the nano-plugging agent is modified nanometer silicon dioxide particles; the rheological modifier is a dimer acid-organic amine copolymer; and the bionic wall bracing agent is carboxymethyl chitosan with a dopamine-derived base group grafted on its main chain.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: February 13, 2018
    Assignee: China University of Petroleum (Beijing)
    Inventors: Guancheng Jiang, Chong Liu, Yinbo He, Qingying Ge, Lili Yang, Yong Wang, Fan Liu, Yongqing Zhang, Zhaohui Wang, Jingdong Hu, Lin Cheng, Guangchang Ma, Yong Qin, Chunyao Peng, Haifang Sun, Deli Gao