US Patent Issued to GRANT PRIDECO on Feb. 24 for "Riserless marine package" (Texas Inventor)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,047, issued on Feb. 24, was assigned to GRANT PRIDECO INC. (Houston).

"Riserless marine package" was invented by Austin Johnson (The Woodlands, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A riserless marine package enables post-BOP utilization of both drill centers simultaneously using an offset riser system to significantly reduce turnaround time between drilling and casing operations and reduce associated costs. A sealing system of the riserless marine package, disposed above the subsea BOP, separates the drilling mud below the sealing system from the seawater above. Drillstrings and casing strings are run through the seawater and transit...