Pyrophase, Inc. Patent applications |
Patent application number | Title | Published |
20140152312 | STIMULATING PRODUCTION FROM OIL WELLS USING AN RF DIPOLE ANTENNA - A system emplaced in a subsurface formation configured to produce radio frequency (RF) fields for recovery of thermally responsive constituents includes coaxially disposed inner and outer conductors connected at an earth surface to an RF power source. The inner and outer conductors form a coaxial transmission line proximate said earth surface and a dipole antenna proximate said formation. The inner conductor protrudes from the outer conductor from a junction exposing a gap between the conductors to a deeper position within the formation. The RF power source is configured to deliver, via the conductors, RF fields to the formation. The system also includes at least one choke structure attached to said outer conductor at a distance at least ΒΌ wavelength above said junction. The choke structure is configured to confine a majority of said RF fields in a volume of said formation situated adjacent to said antenna. | 06-05-2014 |
20120325459 | RADIO FREQUENCY TECHNOLOGY HEATER FOR UNCONVENTIONAL RESOURCES - A system for heating at least a part of a subsurface hydro carbonaceous earth formation forms a borehole into or adjacent to the formation, places elongated coaxial inner and outer conductors into the borehole with the inner and outer conductors electrically connected to each other at a depth below the top of the formation, and connects an AC power source to at least the outer conductor to produce heat in at least one of the conductors. The AC output has a controlled frequency, and the outer conductor comprises a standard oil well component made of a ferromagnetic material that conducts current from the AC power source in only a surface region of the conductor due to the skin effect phenomenon. More heat is dissipated from portions of the conductor that is within the depth range of the formation than from other portions of the conductor. | 12-27-2012 |