Patents by Inventor John Sladic

John Sladic 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).

  • Downhole tool and method
    Patent number: 9759038
    Abstract: A downhole tool (10) and method for controlling fluid flow into and/or from a formation zone (FZ), the downhole tool (10) comprising a sliding sleeve device (12) disposed between, and forming a fluid coupling between a first screen (14) and a second screen (16), the sliding sleeve device (12) configured to provide axial fluid communication between the screens (14, 16) and to provide selective lateral passage of fluid through the screens (14, 16) into a throughbore (24,36,42) of the downhole tool (10).
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: September 12, 2017
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Andrew McGeoch, Liam Watt Clark Goodall, Sean Stewart, John Sladic, Shawn Rabel
  • Downhole Tool and Method
    Publication number: 20150034329
    Abstract: A downhole tool (10) and method for controlling fluid flow into and/or from a formation zone (FZ), the downhole tool (10) comprising a sliding sleeve device (12) disposed between, and forming a fluid coupling between a first screen (14) and a second screen (16), the sliding sleeve device (12) configured to provide axial fluid communication between the screens (14, 16) and to provide selective lateral passage of fluid through the screens (14, 16) into a throughbore (24,36,42) of the downhole tool (10).
    Type: Application
    Filed: August 1, 2013
    Publication date: February 5, 2015
    Applicant: Petrowell Limited
    Inventors: Andrew McGeoch, Liam Watt Clark Goodall, Sean Stewart, John Sladic, Shawn Rabel
  • Downhole Tool and Method
    Publication number: 20140224504
    Abstract: A downhole tool (10) and method for controlling fluid flow into and/or from a formation zone (FZ), the downhole tool (10) comprising a sliding sleeve device (12) disposed between, and forming a fluid coupling between a first screen (14) and a second screen (16), the sliding sleeve device (12) configured to provide axial fluid communication between the screens (14, 16) and to provide selective lateral passage of fluid through the screens (14, 16) into a throughbore (24,36,42) of the downhole tool (10).
    Type: Application
    Filed: November 15, 2013
    Publication date: August 14, 2014
    Applicant: Petrowell Limited
    Inventors: Andrew McGeoch, Liam Watt Clark Goodall, Sean Stewart, John Sladic, Shawn Rabel