Patents by Inventor Teresa Chen-Keat

Teresa Chen-Keat 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).

  • Sensing magnetized portions of a wellhead system to monitor fatigue loading
    Patent number: 9416652
    Abstract: A wellhead assembly having a tubular magnetized in at least one selected location, and a sensor proximate the magnetized location that monitors a magnetic field from the magnetized location. The magnetic field changes in response to changes in mechanical stress of the magnetized location, so that signals from the sensor represent loads applied to the tubular. Analyzing the signals over time provides fatigue loading data useful for estimating structural integrity of the tubular and its fatigue life. Example tubulars include a low pressure housing, a high pressure housing, conductor pipes respectively coupled with the housings, a string of tubing, a string of casing, housing and tubing connections, housing and tubing seals, tubing hangers, tubing risers, and other underwater structural components that require fatigue monitoring, or can be monitored for fatigue.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: August 16, 2016
    Assignee: Vetco Gray Inc.
    Inventors: Yuri Alexeyevich Plotnikov, Teresa Chen-Keat, Yanyan Wu, Chad Eric Yates, Xichang Zhang, Li Zheng, Pinghai Yang
  • SENSING MAGNETIZED PORTIONS OF A WELLHEAD SYSTEM TO MONITOR FATIGUE LOADING
    Publication number: 20150041119
    Abstract: A wellhead assembly having a tubular magnetized in at least one selected location, and a sensor proximate the magnetized location that monitors a magnetic field from the magnetized location. The magnetic field changes in response to changes in mechanical stress of the magnetized location, so that signals from the sensor represent loads applied to the tubular. Analyzing the signals over time provides fatigue loading data useful for estimating structural integrity of the tubular and its fatigue life. Example tubulars include a low pressure housing, a high pressure housing, conductor pipes respectively coupled with the housings, a string of tubing, a string of casing, housing and tubing connections, housing and tubing seals, tubing hangers, tubing risers, and other underwater structural components that require fatigue monitoring, or can be monitored for fatigue.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 12, 2015
    Applicant: Vetco Gray Inc.
    Inventors: Yuri Alexeyevich Plotnikov, Teresa Chen-Keat, Yanyan Wu, Chad Eric Yates, Xichang Zhang, Li Zheng, Pinghai Yang