Patents by Inventor Lukas David

Lukas David 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).

  • Well abandonment and slot recovery
    Patent number: 11230899
    Abstract: A downhole casing cutting and removal assembly (10) and method of use thereof, the assembly comprising a work string (23) with a cutting mechanism (18) and plurality of resettable anchor mechanisms (20B-20D). The arrangement allows a test pull to be made following the cut by an anchor mechanism closer to the upper end of the cut casing section than an anchor mechanism (20B-20D) located close to the cutting mechanism. Time is thus saved by not having to raise and lower a single anchor mechanism (20B-20D) between the cutting position and the upper end of the cut casing section to undertake a test pull.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: January 25, 2022
    Assignee: ARDYNE HOLDINGS LIMITED
    Inventors: David Stewart, Lukas David, James Linklater
  • Improvements In Or Relating To Well Abandonment and Slot Recovery
    Publication number: 20210032948
    Abstract: A downhole casing cutting and removal assembly (10) and method of use thereof, the assembly comprising a work string (23) with a cutting mechanism (18) and plurality of resettable anchor mechanisms (20B-20D). The arrangement allows a test pull to be made following the cut by an anchor mechanism closer to the upper end of the cut casing section than an anchor mechanism (20B-20D) located close to the cutting mechanism. Time is thus saved by not having to raise and lower a single anchor mechanism (20B-20D) between the cutting position and the upper end of the cut casing section to undertake a test pull.
    Type: Application
    Filed: November 29, 2018
    Publication date: February 4, 2021
    Inventors: David Stewart, Lukas David, James Linklater