Patents by Inventor JANINE SHIPMAN

JANINE SHIPMAN 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).

  • HIGH TEMPERATURE HIGH SALT LOW END RHEOLOGY MODIFIERS
    Publication number: 20240043734
    Abstract: A low-end rheology modifier for adjusting rheological characteristics of water-based drilling fluid systems, particularly for high salt, high density drilling fluids in high temperature and high-pressure applications. The low end rheology modifier comprises a copolymer and laponite clay, the copolymer comprising tert-Butylacrylamidosulfonic acid (TBAS) and n-vinylpyrrolidone (NVP) crosslinked with N,N?-Methylenebis(acrylamide).
    Type: Application
    Filed: August 8, 2022
    Publication date: February 8, 2024
    Applicants: CNPC USA CORPORATION, Beijing Huamei Inc., CHINA NATIONAL PETROLEUM CORPORATION
    Inventors: JANINE SHIPMAN, MENG LU, WEIBIN ZHA
  • REDUCING LOSS CIRCULATION DURING WELL-DRILLING OPERATIONS
    Publication number: 20240003205
    Abstract: A method for significantly reducing and/or preventing loss circulation in a well during drilling operations. The method includes pumping water-based drilling fluid comprising shape memory polymer particles into bore hole while drilling and exposing the drilling fluid to an activation temperature. The polymer particles change shape at activation temperature filling all or portion of fractures in the bore hole thus significantly reducing and/or preventing loss circulation in the well.
    Type: Application
    Filed: July 1, 2022
    Publication date: January 4, 2024
    Applicants: CNPC USA CORPORATION, BEIJING HUAMEI, INC., CHINA NATIONAL PETROLEUM CORPORATION
    Inventors: WEIBIN ZHA, MENG LU, JANINE SHIPMAN, JIAXIANG REN, FUCHEN LIU, RONGCHAO CHENG
  • Lost circulation test method for expandable geopolymers
    Patent number: 11851606
    Abstract: The disclosure includes a new test method of evaluating lost circulation prevention with expandable geopolymers. The expandable geopolymer is tested using a permeability plugging tester, slot disk, drilling fluid, and a piston to determine how much fluid is released from the test cell.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: December 26, 2023
    Assignees: CNPS USA CORPORATION, BEIJING HUAMEI INC., CHINA NATIONAL PETROLEUM CORPORATION
    Inventors: Weibin Zha, Meng Lu, Janine Shipman
  • LOST CIRCULATION TEST METHOD FOR EXPANDABLE GEOPOLYMERS
    Publication number: 20230136505
    Abstract: The disclosure includes a new test method of evaluating lost circulation prevention with expandable geopolymers. The expandable geopolymer is tested using a permeability plugging tester, slot disk, drilling fluid, and a piston to determine how much fluid is released from the test cell.
    Type: Application
    Filed: October 28, 2021
    Publication date: May 4, 2023
    Applicant: CNPC USA CORPORATION
    Inventors: WEIBIN ZHA, MENG LU, JANINE SHIPMAN