Patents by Inventor Caili Fu

Caili Fu 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).

  • Method and device for detecting damage rate of an inner coating of a downhole oil casing
    Patent number: 10641723
    Abstract: This disclosure provides a method and device for detecting the damage rate of an inner coating of a downhole oil casing. The method includes filling the oil casing with electrolyte, obtaining the well depth-detection current on a discharge electrode in a process of moving the discharge electrode from one end of the oil casing to the other end of the oil casing, and determining a well depth-damage rate state of the inner coating of the oil casing according to the well depth-detection current. This application can realize quantitative judgment for the damage rate of an inner coating of a downhole oil casing, resulting in rapid in detection speed, convenient and safe in operation, and low detection cost.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: May 5, 2020
    Assignee: PetroChina Company Limited
    Inventors: Qiongwei Li, Bihai Cheng, Zewei Tang, Jianqiang Xue, Caili Fu, Huili Yang, Zhiwu He, Lihua Yang, Xinzhu Zhang, Yulai Sun
  • METHOD AND DEVICE FOR DETECTING DAMAGE RATE OF AN INNER COATING OF A DOWNHOLE OIL CASING
    Publication number: 20180209928
    Abstract: This disclosure provides a method and device for detecting the damage rate of an inner coating of a downhole oil casing. The method includes filling the oil casing with electrolyte, obtaining the well depth-detection current on a discharge electrode in a process of moving the discharge electrode from one end of the oil casing to the other end of the oil casing, and determining a well depth-damage rate state of the inner coating of the oil casing according to the well depth-detection current. This application can realize quantitative judgment for the damage rate of an inner coating of a downhole oil casing, resulting in rapid in detection speed, convenient and safe in operation, and low detection cost.
    Type: Application
    Filed: March 21, 2018
    Publication date: July 26, 2018
    Applicant: PETROCHINA COMPANY LIMITED
    Inventors: Qiongwei LI, Bihai CHENG, Zewei TANG, Jianqiang XUE, Caili FU, Huili YANG, Zhiwu HE, Lihua YANG, Xinzhu ZHANG, Yulai SUN
  • METHOD OF PREPARING DERIVATIVES/OLIGOMERS OF EPICATECHIN AND APPLICATIONS THEREOF
    Publication number: 20120323016
    Abstract: The present invention relates to the preparation of a class of novel, optically active compounds derived from oligomeric proanthocyanidins (OPCs), more particularly to oligomers of epicatechin. These compounds include multidentate ligands and their metal complexes for use in catalysis. Methods of depolymerising proanthocyanidins to form catechins, and particularly depolymerising proanthocyanidins derived from plant sources to form novel epicatechins having application in catalysis are disclosed.
    Type: Application
    Filed: December 17, 2010
    Publication date: December 20, 2012
    Applicant: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Dejian Huang, Wei Chen, Runyun Ni, Caili Fu, Yi Ling Quek