US Patent Issued to Interwell P&A AS on Feb. 24 for "Method for providing a permanent barrier in a well" (Norwegian Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,048, issued on Feb. 24, was assigned to Interwell P&A AS (Hafrsfjord, Norway).

"Method for providing a permanent barrier in a well" was invented by Torgeir Rusten (Vikhammer, Norway) and Stian Tondel (Trondheim, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for providing a permanent barrier in a well includes lowering a first, particulate constituent of a pyrotechnic mixture to a desired location in the well, wherein the first constituent is a metal oxide. The method further includes waiting a first predetermined period of time to allow the first, particulate constituent to settle as sediment at the desired location, lowering a seco...