US Patent Issued to Sabre Machining on July 29 for "Tubing insert isolation valve for use with legacy wells, and methods of use thereof" (Canadian Inventor)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,968, issued on July 29, was assigned to Sabre Machining Ltd. (Alberta, Canada).

"Tubing insert isolation valve for use with legacy wells, and methods of use thereof" was invented by Gregg Lacusta (Alberta, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tubing isolation valve configured to permit lowering thereof downhole and installation in an existing pump seating nipple at a distal end of a production string. An elongate mandrel having at least 2 ports is slidably positioned in a hollow seal sub. A portion of the resulting assembly is positionable via a landing tool within the pump seating nipple. The mandrel is slidably moveable within t...