ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,863, issued on April 29, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).
"Annulus access systems and methods" was invented by Jawad Zahur (Abqaiq, Saudi Arabia) and Akram R. Al-Barghouti (Abqaiq, Saudi Arabia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A well system includes a wellhead arranged at a well surface and having a wellbore extending therefrom, the wellhead including a production tubing head housing, production casing extending from the wellhead and into the wellbore, production tubing extending from the production tubing head housing and into the production casing and thereby defining a tubing-casing annulus between t...