Method of protecting an RF applicator
 A method which protects an RF applicator during the in-situ RF retorting of a hydrocarbon stratum from a borehole which traverses the hydrocarbon stratum including lining that portion of the borehole traversing the hydrocarbon stratum with a non-conductive high temperature material. 
Texaco Inc.
E E
E21B E21B
inventional inventional
Mark D. Kerry D.
Looney Savage