US Patent Issued to Expro North Sea on Aug. 25 for "Intervention system for efficient sealing" (British Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,322, issued on Aug. 25, was assigned to Expro North Sea Ltd. (Dyce, Great Britain).

"Intervention system for efficient sealing" was invented by Chris Stewart (Dyce, Great Britain), Hannah Stewart (Dyce, Great Britain) and Dylan Johnston (Stirling, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "System and methods for efficient sealing within an annulus outside the casing of a subterranean wellbore using annulus intervention insertion system are disclosed. Some examples describe a system that includes a magnetorheological cementitious material and a magnetic field induced by electromagnet provided inside the wellbore. Efficient cementing...