Patents by Inventor Gavin Graff

Gavin Graff 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).

  • Patent number: 12270281
    Abstract: A wiper dart can be used in an oil and gas operation. The wiper dart can have at least two different outer diameters. A first outer diameter can be less than a second outer diameter and used to wipe the insides of tool joints of a tubing string. The second outer diameter can be used to wipe the insides of pipe sections of the tubing string that have a larger inner diameter than the tool joints. The single, bi-diameter wiper cup can be used in lieu of two or more current, conical-shaped wiper cups to accomplish the same functionality. The wiper cup can include a protruding ring located circumferentially around the wiper cup at the first outer diameter. A plurality of buttons or splines can be spaced apart around the wiper cup at the second outer diameter.
    Type: Grant
    Filed: October 24, 2023
    Date of Patent: April 8, 2025
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Shobeir Pirayeh Gar, Lonnie Carl Helms, Gavin Graff, Xiaoguang Allan Zhong
  • Publication number: 20250084732
    Abstract: A wiper dart can be used in an oil and gas operation. The wiper dart can have at least two different outer diameters. A first outer diameter can be less than a second outer diameter and used to wipe the insides of tool joints of a tubing string. The second outer diameter can be used to wipe the insides of pipe sections of the tubing string that have a larger inner diameter than the tool joints. The single, bi-diameter wiper cup can be used in lieu of two or more current, conical-shaped wiper cups to accomplish the same functionality. The wiper cup can include a protruding ring located circumferentially around the wiper cup at the first outer diameter. A plurality of buttons or splines can be spaced apart around the wiper cup at the second outer diameter.
    Type: Application
    Filed: October 24, 2023
    Publication date: March 13, 2025
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Shobeir Pirayeh GAR, Lonnie Carl HELMS, Gavin Graff, Xiaoguang Allan ZHONG