摘要:
Equipment and a process for separating bitumen from oil sand in a process stream are described. The equipment includes several processing vessels and one or more local area radio frequency applicators to selectively heat the process stream in local areas of the equipment. The local area can be adjacent to an input or output of a component of the equipment. Also described is equipment for processing an oil sand—water slurry, including a slurrying vessel, a slurry pipe, and a local area radio frequency applicator. The local area radio frequency applicator is located outside of the slurry pipe, and heats the local area without significantly heating the contents of the slurrying vessel or of the downstream portion of the slurry pipe.
摘要:
A radio frequency heater is disclosed including a vessel for containing material to be heated and a radio frequency radiating surface. The vessel has a wall defining a reservoir. The radio frequency radiating surface at least partially surrounds the reservoir. The radiating surface includes two or more circumferentially spaced petals that are electrically isolated from other petals. The petals are positioned to irradiate at least a portion of the reservoir, and are adapted for connection to a source of radio frequency alternating current. A generally conical tank or tank segment having a conically wound radio frequency applicator is also contemplated. Also, a method of heating an oil-water process stream is disclosed. In this method a radio frequency heater and an oil-water process stream are provided. The process stream is irradiated with the heater, thus heating the water phase of the process stream.
摘要:
An electromagnetic heating applicator is disclosed. The applicator includes a first strand and a second strand, each of which has an insulated portion, a bare portion, and is made up of at least one wire. The first and second strands are braided, twisted, or both braided and twisted together such that the bare portion of each strand is adjacent to the insulated portion of the other strand. A system and method for heating a geological formation are also disclosed. The system includes an applicator in a bore that extends into a formation, an extraction bore connected to a pump and positioned under the first bore, and transmitting equipment connected to the applicator. The method includes the steps of providing the components of the system, connecting the applicator to RF power transmitting equipment, applying RF power to the applicator using the transmitting equipment, and pumping hydrocarbons out of the extraction bore.
摘要:
A dipole antenna may be created by surrounding a portion of the continuous conductor with a nonconductive magnetic bead, and then applying a power source to the continuous conductor across the nonconductive magnetic bead. The nonconductive magnetic bead creates a driving discontinuity without requiring a break or gap in the conductor. The power source may be connected or applied to the continuous conductor using a variety of preferably shielded configurations, including a coaxial or twin-axial inset or offset feed, a triaxial inset feed, or a diaxial offset feed. A second nonconductive magnetic bead may be positioned to surround a second portion of the continuous conductor to effectively create two nearly equal length dipole antenna sections on either side of the first nonconductive magnetic bead. The nonconductive magnetic beads may be comprised of various nonconductive magnetic materials, and preformed for installation around the conductor, or injected around the conductor in subsurface applications. Electromagnetic heating of hydrocarbon ores may be accomplished.
摘要:
A wireless communications device includes wireless communications circuitry and an antenna coupled to the wireless communications circuitry. The antenna includes a loop electrical conductor having four spaced apart gaps therein defining four respective spaced apart coupling points, and a feed assembly. The feed assembly includes at least one antenna feed, and four signal feed lines, each signal feed line coupled between the at least one antenna feed and a respective one of the four coupling points. The antenna may provide linear polarization, circular polarization, and dual polarization.
摘要:
A radio frequency applicator and method for heating a hydrocarbon formation is disclosed. An aspect of at least one embodiment disclosed is a linear radio frequency (RF) applicator. It includes a transmission line and a current return path that is insulated from the transmission line and surrounds the transmission line to create a coaxial conductor. At least one conductive sleeve is positioned around the transmission line and the current return path. The transmission line and the current return path are electrically connected to the conductive sleeve. A radio frequency source is configured to apply a signal to the transmission line. When the linear applicator is operated, a circular magnetic field forms, which creates eddy current in the formation causing heavy hydrocarbons to flow. The applicator provides enhanced oil recovery where steam may not be used.
摘要:
The antenna device includes an electrical conductor extending on a substrate and having at least one gap therein, and with an outer ring portion to define a radiating antenna element, and at least one inner ring portion to define a feed coupler and connected in series with the outer ring portion and extending within the outer ring portion. A coupling feed element is adjacent the at least one inner ring portion, and a feed structure is connected to the coupling feed element to feed the outer ring portion.
摘要:
The antenna assembly includes first and second adjacent antenna elements each having a tapered or conical antenna body with a base and an apex opposite the base. An elongated or cylindrical antenna body extends from the base of the conical antenna body, and includes a plurality of adjacent elongated or cylindrical antenna body portions, and a respective dielectric member separating adjacent cylindrical antenna body portions. Each of the first and second adjacent antenna elements are aligned along a common longitudinal axis with respective apexes in opposing relation to define a dipole antenna. Increased radiation pattern bandwidth and satisfactory pattern on the horizon may be achieved in such a biconical-type antenna.
摘要:
A method of hydrocarbon resource recovery from a subterranean formation may include forming a plurality of spaced apart injector/producer well pairs in the subterranean formation, each injector/producer well pair including a laterally extending producer well, and a laterally extending injector well spaced thereabove. The method may include determining a failed injector/producer well pair from among the plurality thereof. The method may further include repairing the failed injector/producer well pair by at least forming a repair well adjacent the failed injector/producer well pair, and applying radio frequency (RF) heating from the repair well to the subterranean formation adjacent the failed injector/producer well pair. The method may further include recovering hydrocarbon resources from the plurality of injector/producer well pairs including the repaired injector/producer well.
摘要:
A hydrocarbon resource processing device may include a radio frequency (RF) source and an RF applicator coupled to the RF source. The RF applicator may include a base member being electrically conductive, and first and second elongate members being electrically conductive and having proximal ends coupled to the base member and extending outwardly therefrom in a generally parallel spaced apart relation. The first and second elongate members may have distal ends configured to receive the hydrocarbon resource therebetween. In another embodiment, the RF applicator may include an enclosure being electrically conductive and having a passageway therethrough to accommodate a flow of the hydrocarbon resource and a divider being electrically conductive and positioned within the enclosure.