Patents by Inventor John Cochrane LEITCH

John Cochrane LEITCH 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).

  • Annulus installed 6 zone control manifold
    Patent number: 10145208
    Abstract: A method of controlling a plurality of downhole tools in a wellbore, using first and second codes transmitted by hydraulic line to first address and then actuate the desired tool. A dedicated line is provided for terminating all actuated tools.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: December 4, 2018
    Assignee: CONOCOPHILLIPS COMPANY
    Inventor: John Cochrane Leitch
  • Downhole zone flow control system
    Patent number: 9695679
    Abstract: Methods and systems operate multiple downhole tools in wells based on hydraulic pressures supplied in control lines. The methods and systems pair each of the tools with a manifold enabling selective actuation of each of the tools from a remote location. Some embodiments include between three and twelve manifold and tool pairs configured for control independent from one another with four of the control lines.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: July 4, 2017
    Assignee: ConocoPhillips Company
    Inventor: John Cochrane Leitch
  • ANNULUS INSTALLED 6 ZONE CONTROL MANIFOLD
    Publication number: 20170022790
    Abstract: A method of controlling a plurality of downhole tools in a wellbore, using first and second codes transmitted by hydraulic line to first address and then actuate the desired tool. A dedicated line is provided for terminating all actuated tools.
    Type: Application
    Filed: April 29, 2016
    Publication date: January 26, 2017
    Inventor: John Cochrane LEITCH
  • DOWNHOLE ZONE FLOW CONTROL SYSTEM
    Publication number: 20150107848
    Abstract: Methods and systems operate multiple downhole tools in wells based on hydraulic pressures supplied in control lines. The methods and systems pair each of the tools with a manifold enabling selective actuation of each of the tools from a remote location. Some embodiments include between three and twelve manifold and tool pairs configured for control independent from one another with four of the control lines.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 23, 2015
    Inventor: John Cochrane LEITCH