US Patent Issued to Baker Hughes Oilfield Operations on April 21 for "Bi-directional wellhead annulus packoff with integral seal and hanger lockdown ring" (Texas Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,082, issued on April 21, was assigned to Baker Hughes Oilfield Operations LLC (Houston).

"Bi-directional wellhead annulus packoff with integral seal and hanger lockdown ring" was invented by Samuel Cheng (Houston), Xichang Zhang (Houston) and Prashant Patel (Tomball, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wellhead annulus packoff and an associated method of energizing and de-energizing include at least one seal element, a hanger lockdown ring, a hanger lockdown energizing ring, a seal lockdown ring, a seal lockdown energizing ring, and one or more mechanical conditional operators, where the at least one seal element adapted to be en...