ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,904, issued on May 27, was assigned to BiSN Tec Ltd. (Warrington, Great Britain).
"Down-hole chemical heater and methods of operating such" was invented by Paul Carragher (Lymm, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a chemical heater for use in down-hole operations together with methods for operating such in oil/gas wells. The chemical heater comprises a heater body housing a chemical reaction heat source material. The heater body has a leading end that, in use, is deployed down-hole first. The heater is provided with ignition means, located in a heating zone proximal to the leading end of the h...