Patents by Inventor Stephen David LONG

Stephen David LONG 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).

  • Publication number: 20150083433
    Abstract: A method for performing downhole gas lift operations includes coupling a gas lift valve to a tubing, wherein the gas lift valve includes an actuator, a flow control device disposed in the actuator, and a closure member that is initially in an open position; injecting a gas downhole and exterior to the tubing; urging the gas to enter the tubing via the gas lift valve; and creating a sufficient pressure differential across the gas lift valve to move the actuator, thereby causing the closure member to close the gas lift valve.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 26, 2015
    Inventors: Stephen David LONG, Zlatko SALIHBEGOVIC, J. Michael HOPE