US Patent Issued to Enhanced Drilling AS on July 8 for "Multi-mode pumped riser arrangement and methods" (Norwegian, American Inventors)

ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,113, issued on July 8, was assigned to Enhanced Drilling AS (Straume, Norway).

"Multi-mode pumped riser arrangement and methods" was invented by Per Christian Stenshorne (Oslo, Norway), David Edward Smith (Katy, Texas) and Gustav Olov Skargard (Oslo, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "A riser system in the form of a pumped riser, i.e. a riser having an outlet from the riser at a depth below the surface of a body of water, where the outlet is coupled to a return pump to return fluid from the riser to the surface, and various operational methods to facilitate greater versatility when performing hydrocarbon drilling related operations...