Patents by Inventor Michael Dermot Mulrooney

Michael Dermot Mulrooney 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).

  • Methods and apparatus for creating wellbores
    Patent number: 11359464
    Abstract: A method of creating a horizontal wellbore section comprises drilling the section in at least two stages. The method comprises drilling a first horizontal bore section. The first horizontal bore section is then provided with a first liner having a wall including initially-closed flow ports. The first liner isolates the wall of the first bore section. A second horizontal bore section is then drilled beyond the first horizontal bore section. The second horizontal bore section is provided with a second liner. Stimulation fluid is then directed into the first and second liners so that the stimulation fluid passes through the wall of the second liner to stimulate the second horizontal bore section. The flow ports in the wall of the first liner are then opened so that the stimulation fluid passes through the wall of the first liner to stimulate the first horizontal bore section.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: June 14, 2022
    Assignee: Total E&P Danmark A/S
    Inventors: Hans-Henrik Kogsboll, Michael Dermot Mulrooney
  • METHODS AND APPARATUS FOR CREATING WELLBORES
    Publication number: 20200063535
    Abstract: A method of creating a horizontal wellbore section comprises drilling the section in at least two stages. The method comprises drilling a first horizontal bore section. The first horizontal bore section is then provided with a first liner having a wall including initially-closed flow ports. The first liner isolates the wall of the first bore section. A second horizontal bore section is then drilled beyond the first horizontal bore section. The second horizontal bore section is provided with a second liner. Stimulation fluid is then directed into the first and second liners so that the stimulation fluid passes through the wall of the second liner to stimulate the second horizontal bore section. The flow ports in the wall of the first liner are then opened so that the stimulation fluid passes through the wall of the first liner to stimulate the first horizontal bore section.
    Type: Application
    Filed: November 1, 2017
    Publication date: February 27, 2020
    Inventors: Hans-Henrik Kogsboll, Michael Dermot Mulrooney