US Patent Issued to Weatherford Technology Holdings on Sept. 8 for "Hydrostatically insensitive valve assembly" (Texas Inventor)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,602, issued on Sept. 8, was assigned to Weatherford Technology Holdings LLC (Houston).

"Hydrostatically insensitive valve assembly" was invented by Brandon C. Goodman (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pressure-operated valve assembly includes an outer mandrel defining a tubing string bore, an inner mandrel arranged within the tubing string bore, a first atmospheric chamber at least partially defined by the outer mandrel, and a second atmospheric chamber at least partially defined between the outer and inner mandrels. A valve chamber is defined in the inner mandrel and in fluid communication with the tubing string bore via a v...