Patents by Inventor Brian A. Parr

Brian A. Parr 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).

  • Control, integration, and modulation systems and methods for regulating hydraulic fracturing systems when combined with a pressure exchange system
    Patent number: 11598189
    Abstract: A method for optimizing pressure exchange includes providing a first pressure exchange system comprising an energy recovery device (ERD). A second system supplies high-pressure fluid, energized by a positive displacement pump, to the ERD. A third system supplies low-pressure fluid to the ERD. The first system energizes the low-pressure fluid with the high-pressure fluid to form a high-pressure fracking fluid, which is delivered from the first system to a well-head. A rate of required flow is input into a control system, which determines a rate of flow of the high-pressure fluid, a rate of flow of the low-pressure fluid, and an actual rate of flow of the fracking fluid at the well-head. The control system then adjusts to equilibrium: the rate of flow of the high-pressure fluid based on the actual rate of flow; and the rate of flow of the low-pressure fluid based on the actual rate of flow.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: March 7, 2023
    Assignee: NEXTIER COMPLETION SOLUTIONS INC.
    Inventors: Paul George, James Montemayor, Brian Parr, Andy Cox
  • Control, Integration, and Modulation Systems and Methods for Regulating Hydraulic Fracturing Systems When Combined with a Pressure Exchange System
    Publication number: 20200392827
    Abstract: A method for optimizing pressure exchange includes providing a first pressure exchange system comprising an energy recovery device (ERD). A second system supplies high-pressure fluid, energized by a positive displacement pump, to the ERD. A third system supplies low-pressure fluid to the ERD. The first system energizes the low-pressure fluid with the high-pressure fluid to form a high-pressure fracking fluid, which is delivered from the first system to a well-head. A rate of required flow is input into a control system, which determines a rate of flow of the high-pressure fluid, a rate of flow of the low-pressure fluid, and an actual rate of flow of the fracking fluid at the well-head. The control system then adjusts to equilibrium: the rate of flow of the high-pressure fluid based on the actual rate of flow; and the rate of flow of the low-pressure fluid based on the actual rate of flow.
    Type: Application
    Filed: June 10, 2020
    Publication date: December 17, 2020
    Inventors: Paul George, James Montemayor, Brian Parr, Andy Cox
  • WNT signalling in reproductive organs
    Patent number: 6485972
    Abstract: A method of enhancing viability of an oocyte by contacting the oocyte with a Wnt-4 polypeptide.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: November 26, 2002
    Assignee: President and Fellows of Harvard College
    Inventors: Andrew P. McMahon, Brian A. Parr, Seppo Vaino