Patent ID: 7891421

Claim:
A radiofrequency reactor for use in thermally recovering oil and related materials, the reactor comprising: a radiofrequency antenna configured to be positioned within a well provided within an area in which crude oil exists in the ground, the radiofrequency antenna including a cylindrically-shaped radiating element for radiating radiofrequency energy into the area in which crude oil exists, the cylindrically-shaped radiating element configured to allow passage of fluids there through; and a radiofrequency generator electrically coupled to the radiofrequency antenna and operable to control the radiofrequency energy generated, wherein the cylindrically-shaped radiating element includes a plurality of apertures for allowing passage of the fluids, the apertures being adjustable in size, the cylindrically-shaped radiating element including an inner cylindrical liner coaxially arranged with an outer cylindrical liner, each cylindrical liner including a plurality of apertures for allowing passage of the fluids, the position of one of the inner and outer liners being axially adjustable relative to the other of the inner and outer liners whereby modulation of emitted energy is achieved.