US Patent Issued to Expro North Sea on Sept. 29 for "Single-lift wireline intervention unit for offshore wells" (British Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,643, issued on Sept. 29, was assigned to Expro North Sea Ltd. (Dyce, Great Britain).

"Single-lift wireline intervention unit for offshore wells" was invented by Ceohilan MacKay (Aberdeen, Great Britain) and William Milne (Aberdeen, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for performing offshore wireline interventions includes a telescopic mast, a wireline drum mounted onto the mast, a pressure control equipment (PCE) stack mounted on a side portion of the mast, one or more wireline valves mounted on a front portion of the mast, and one or more lubricators mounted along the mast."

The patent was filed on July 1, 2025, ...