Patents by Inventor Garry McCraw

Garry McCraw 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).

  • Closed loop drilling mud cooling system for land-based drilling operations
    Patent number: 11384610
    Abstract: A method for cooling drilling mud includes controlling operation of a first closed-loop cooling system to cool a flow of drilling mud when a first temperature of the flow of drilling mud exceeds a first predetermined mud set point temperature, and controlling operation of a second closed-loop cooling system to further cool the flow of drilling mud when a second temperature of the flow of drilling mud that has been cooled by the first closed-loop cooling system exceeds a second predetermined mud set point temperature.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: July 12, 2022
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventor: Garry McCraw
  • CLOSED LOOP DRILLING MUD COOLING SYSTEM FOR LAND-BASED DRILLING OPERATIONS
    Publication number: 20180320462
    Abstract: A method for cooling drilling mud includes controlling operation of a first closed-loop cooling system to cool a flow of drilling mud when a first temperature of the flow of drilling mud exceeds a first predetermined mud set point temperature, and controlling operation of a second closed-loop cooling system to further cool the flow of drilling mud when a second temperature of the flow of drilling mud that has been cooled by the first closed-loop cooling system exceeds a second predetermined mud set point temperature.
    Type: Application
    Filed: July 3, 2018
    Publication date: November 8, 2018
    Inventor: Garry McCraw
  • Closed loop drilling mud cooling system for land-based drilling operations
    Patent number: 10041314
    Abstract: A drilling mud cooler includes a first mud heat exchanger that is adapted to receive a flow of drilling mud, a first closed-loop cooling system that is adapted to cool a first cooling fluid that is circulated through the first mud heat exchanger so as to reduce a temperature of the flow of drilling mud from a first temperature to a second temperature, a second mud heat exchanger that is adapted to receive the flow of reduced temperature drilling mud from the first mud heat exchanger, and a second closed-loop cooling system that is adapted to cool a second cooling fluid that is circulated through the second mud heat exchanger so as to further reduce the temperature of the flow of drilling mud from the second temperature to a third temperature.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: August 7, 2018
    Assignee: National Oilwell Varco, L.P.
    Inventor: Garry McCraw
  • CLOSED LOOP DRILLING MUD COOLING SYSTEM FOR LAND-BASED DRILLING OPERATIONS
    Publication number: 20160010407
    Abstract: A drilling mud cooler includes a first mud heat exchanger that is adapted to receive a flow of drilling mud, a first closed-loop cooling system that is adapted to cool a first cooling fluid that is circulated through the first mud heat exchanger so as to reduce a temperature of the flow of drilling mud from a first temperature to a second temperature, a second mud heat exchanger that is adapted to receive the flow of reduced temperature drilling mud from the first mud heat exchanger, and a second closed-loop cooling system that is adapted to cool a second cooling fluid that is circulated through the second mud heat exchanger so as to further reduce the temperature of the flow of drilling mud from the second temperature to a third temperature.
    Type: Application
    Filed: July 8, 2014
    Publication date: January 14, 2016
    Inventor: Garry McCraw