ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,709, issued on April 7, was assigned to Enhanced Drilling AS (Straume, Norway).
"Arrangement for controlling volume in a gas or oil well system" was invented by Per Christian Stenshorne (Oslo, Norway) and Gustav Olov Skargard (Oslo, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an arrangement and methods to control volume of fluids in a well system having a riser (7) extending from a well to a rig. The riser (7) has an increased diameter section (1) situated below the upper end of the riser (7) and above any slip joint (12) in the riser. The arrangement further comprises a sensor (5) to continuously measure the posit...