Patents by Inventor Benjamin B. Douglas

Benjamin B. Douglas 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).

  • Pressure management system for a well annulus
    Patent number: 10844693
    Abstract: A system and methods for maintaining pressure on an annulus in a well are provided. An example of a pressure maintenance system for an annulus on a well, included a passive accumulator coupled to the annulus to accept fluid expanding in the annulus or to supply fluid to replace fluid contracting in the annulus. A gas pressure system is included to maintain a gas in a headspace over the fluid in the passive accumulator, and a pressure controller maintains pressure in the headspace within a set range.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: November 24, 2020
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Benjamin B. Douglas, Ian McKay, Malcom J. Stevenson
  • Pressure Management System for a Well Annulus
    Publication number: 20190153821
    Abstract: A system and methods for maintaining pressure on an annulus in a well are provided. An example of a pressure maintenance system for an annulus on a well, included a passive accumulator coupled to the annulus to accept fluid expanding in the annulus or to supply fluid to replace fluid contracting in the annulus. A gas pressure system is included to maintain a gas in a headspace over the fluid in the passive accumulator, and a pressure controller maintains pressure in the headspace within a set range.
    Type: Application
    Filed: September 21, 2018
    Publication date: May 23, 2019
    Inventors: Benjamin B. Douglas, Ian McKay, Malcom J. Stevenson