Patents by Inventor Douglas Derr

Douglas Derr 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).

  • Rapid response well control assembly
    Patent number: 11136857
    Abstract: This disclosure provides a hybrid well capping stack system that uses a lower ram blow-out preventer (BOP) coupled to a gate valve-based capping stack that has first and second flowlines where the first flowline has a gate valve and the second flowline has a gate valve. At least one of the first and second flowlines is located on the frame to divert a flow of fluid laterally from a central flow axis of a wellbore.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: October 5, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Carl Cramm, Andrew John Cuthbert, Douglas Derr
  • RAPID RESPONSE WELL CONTROL ASSEMBLY
    Publication number: 20210071499
    Abstract: This disclosure provides a hybrid well capping stack system that uses a lower ram blow-out preventer (BOP) coupled to a gate valve-based capping stack that has first and second flowlines where the first flowline has a gate valve and the second flowline has a gate valve. At least one of the first and second flowlines is located on the frame to divert a flow of fluid laterally from a central flow axis of a wellbore.
    Type: Application
    Filed: October 17, 2017
    Publication date: March 11, 2021
    Inventors: Carl Cramm, Andrew John Cuthbert, Douglas Derr