Abstract: A fitting for coupling ends of cores of three insulated conductors includes an end termination placed over end portions of the three insulated conductors. The end termination includes three separate openings that pass through the end termination longitudinally. Each of the insulated conductors passes through one of the openings with end portions of the insulated conductors protruding from one side of the end termination. Exposed cores of the end portions of the insulated conductors protrude from the end termination. A cylinder is coupled to the side of the end termination from which the end portions of the insulated conductors protrude. An electrical bus is coupled to the exposed portion of the cores. Electrically insulating material fills the cylinder such that the cores are substantially enclosed in the electrically insulating material. An end cap is coupled to the cylinder to seal off the interior of the cylinder.

Abstract: A fitting for coupling ends of cores of three insulated conductors includes an end termination placed over end portions of the three insulated conductors. The end termination includes three separate openings that pass through the end termination longitudinally. Each of the insulated conductors passes through one of the openings with end portions of the insulated conductors protruding from one side of the end termination. Exposed cores of the end portions of the insulated conductors protrude from the end termination. A cylinder is coupled to the side of the end termination from which the end portions of the insulated conductors protrude. An electrical bus is coupled to the exposed portion of the cores. Electrically insulating material fills the cylinder such that the cores are substantially enclosed in the electrically insulating material. An end cap is coupled to the cylinder to seal off the interior of the cylinder.

Abstract: Systems and methods for heaters used in treating a subsurface formation are described herein. Certain embodiments relate to systems for insulated conductors used in heater elements. More particularly, fittings for splicing together insulated conductors and/or insulated conductors to other conductors are described.

Abstract: Systems and methods for heaters used in treating a subsurface formation are described herein. Certain embodiments relate to systems for insulated conductors used in heater elements. More particularly, fittings for splicing together insulated conductors and/or insulated conductors to other conductors are described.

Abstract: A method for coupling a lead-in cable to an insulated conductor includes exposing an end portion of a core of the insulated conductor by removing at least a portion of a jacket and an electrical insulator surrounding the end portion of the core. A recess is formed in the electrical insulator at the end of the electrical insulator surrounding the end portion of the core. An end portion of a conductor of the lead-in cable is exposed by removing at least a portion of a sheath and insulation surrounding the end portion of the conductor. The end portion of the core is coupled to the end portion of the conductor. The end portion of the core and the end portion of the conductor are placed in a body filled with electrically insulating material.

Abstract: Systems, methods, and heaters for treating a subsurface formation are described herein. At least one method for providing power to one or more subsurface heaters is described herein. The method may include monitoring one or more operating parameters of the heaters, the intermittent power source, and a transformer coupled to the intermittent power source that transforms power from the intermittent power source to power with appropriate operating parameters for the heaters; and controlling the power output of the transformer so that a constant voltage is provided to the heaters regardless of the load of the heaters and the power output provided by the intermittent power source.

Abstract: A fitting for coupling an end of a first insulated conductor to an end of a second insulated conductor is described. The fitting includes a first splice housing placed over the end of the first insulated conductor and coupled to the first insulated conductor. The fitting also includes a second splice housing placed over the end of the second insulated conductor and coupled to the second insulated conductor. A sleeve is located over the end of the second insulated conductor and adjacent to the second splice housing. An interior volume of the fitting is substantially filled with electrically insulating material. The interior volume of the fitting is reduced such that the electrically insulating material substantially filling the interior volume is compacted.

Abstract: A fitting for coupling ends of cores of three insulated conductors includes an end termination placed over end portions of the three insulated conductors. The end termination includes three separate openings that pass through the end termination longitudinally. Each of the insulated conductors passes through one of the openings with end portions of the insulated conductors protruding from one side of the end termination. Exposed cores of the end portions of the insulated conductors protrude from the end termination. A cylinder is coupled to the side of the end termination from which the end portions of the insulated conductors protrude. An electrical bus is coupled to the exposed portion of the cores. Electrically insulating material fills the cylinder such that the cores are substantially enclosed in the electrically insulating material. An end cap is coupled to the cylinder to seal off the interior of the cylinder.

Abstract: Systems, methods, and heaters for treating a subsurface formation are described herein. At least one method for providing power to one or more subsurface heaters is described herein.

Abstract: A fitting for coupling ends of cores of three insulated conductors includes an end termination placed over end portions of the three insulated conductors. The end termination includes three separate openings that pass through the end termination longitudinally. Each of the insulated conductors passes through one of the openings with end portions of the insulated conductors protruding from one side of the end termination. Exposed cores of the end portions of the insulated conductors protrude from the end termination. A cylinder is coupled to the side of the end termination from which the end portions of the insulated conductors protrude. An electrical bus is coupled to the exposed portion of the cores. Electrically insulating material fills the cylinder such that the cores are substantially enclosed in the electrically insulating material. An end cap is coupled to the cylinder to seal off the interior of the cylinder.

Abstract: Systems and methods for heaters used in treating a subsurface formation are described herein. Certain embodiments relate to systems for insulated conductors used in heater elements. More particularly, fittings for splicing together insulated conductors and/or insulated conductors to other conductors are described.

Abstract: A fitting for coupling ends of cores of three insulated conductors includes an end termination placed over end portions of the three insulated conductors. The end termination includes three separate openings that pass through the end termination longitudinally. Each of the insulated conductors passes through one of the openings with end portions of the insulated conductors protruding from one side of the end termination. Exposed cores of the end portions of the insulated conductors protrude from the end termination. A cylinder is coupled to the side of the end termination from which the end portions of the insulated conductors protrude. An electrical bus is coupled to the exposed portion of the cores. Electrically insulating material fills the cylinder such that the cores are substantially enclosed in the electrically insulating material. An end cap is coupled to the cylinder to seal off the interior of the cylinder.

Abstract: A method for coupling a lead-in cable to an insulated conductor includes exposing an end portion of a core of the insulated conductor by removing at least a portion of a jacket and an electrical insulator surrounding the end portion of the core. A recess is formed in the electrical insulator at the end of the electrical insulator surrounding the end portion of the core. An end portion of a conductor of the lead-in cable is exposed by removing at least a portion of a sheath and insulation surrounding the end portion of the conductor. The end portion of the core is coupled to the end portion of the conductor. The end portion of the core and the end portion of the conductor are placed in a body filled with electrically insulating material.

Abstract: A fitting for coupling an end of a first insulated conductor to an end of a second insulated conductor is described. The fitting includes a first splice housing placed over the end of the first insulated conductor and coupled to the first insulated conductor. The fitting also includes a second splice housing placed over the end of the second insulated conductor and coupled to the second insulated conductor. A sleeve is located over the end of the second insulated conductor and adjacent to the second splice housing. An interior volume of the fitting is substantially filled with electrically insulating material. The interior volume of the fitting is reduced such that the electrically insulating material substantially filling the interior volume is compacted.

Abstract: Systems, methods, and heaters for treating a subsurface formation are described herein. At least one system for providing power to one or more subsurface heaters is described herein. The system may include an intermittent power source; a transformer coupled to the intermittent power source, and a tap controller coupled to the transformer. The transformer may be configured to transform power from the intermittent power source to power with appropriate operating parameters for the heaters. The tap controller may be configured to monitor and control the transformer so that a constant voltage is provided to the heaters from the transformer regardless of the load of the heaters and the power output provided by the intermittent power source.