The invention relates to a subsea heating apparatus for heating a subsea component extending along a longitudinal direction, comprising an induction coupler including a first section with first core part(s) and a second section with second core parts, a respective first magnetic core part being coupled with a second magnetic core part to form a magnetic core ring adapted to surround an electrical conductor to be connected to a power source. At least one component electrical cable associated with the subsea component to be heated and adapted to receive power via the induction coupler for heating the subsea component. The coupler includes several windings each wound around a respective second core part and connected to respective component electrical cable(s). The second section is adapted to be attached to the subsea component and several second core parts are arranged in distinct radial positions around the longitudinal direction.

The invention relates to a subsea heating apparatus for heating a subsea component extending along a longitudinal direction, comprising an induction coupler including a first section with first core part(s) and a second section with second core parts, a respective first magnetic core part being coupled with a second magnetic core part to form a magnetic core ring adapted to surround an electrical conductor to be connected to a power source. At least one component electrical cable associated with the subsea component to be heated and adapted to receive power via the induction coupler for heating the subsea component. The coupler includes several windings each wound around a respective second core part and connected to respective component electrical cable(s). The second section is adapted to be attached to the subsea component and several second core parts are arranged in distinct radial positions around the longitudinal direction.

Described herein are methods and system that use electromagnetic heating to heat wellbores and the fluids therein. The heating is achieved by placing one or more permanent magnets in the wellbore and moving a metallic component and/or the one or more permanent magnets relative to each other. This generates eddy currents in the metallic component, which heat the metallic component. This heat is transferred to the fluids in the wellbore from the metallic component by convection. In some embodiments, permanent magnets are installed in the tubing to induce eddy current heating in a well by converting the linear motion of a sucker rod to rotary motion of a conducting tube using a lead or ball screw. The heater may directly integrate with existing pump jack equipment with little or no additional infrastructure required.

Fixtures and methods for induction heating of bored parts are described. The fixtures and methods may be used to counter the effects of convective heat transfer and thereby promote a more uniform temperature distribution around a bore of a bored part being heated. The fixture includes a base including one or more locators engaged with the part and locating the base relative to the part, and an induction heating coil supported by the base. The induction heating coil is disposed inside the bore of the part and is inductively coupled to the part. The induction heating coil is wound about a coil axis which is non-coaxial with a bore axis of the bore of the part during heating of the part.

Fixtures and methods for induction heating of bored parts are described. The fixtures and methods may be used to counter the effects of convective heat transfer and thereby promote a more uniform temperature distribution around a bore of a bored part being heated. The fixture includes a base including one or more locators engaged with the part and locating the base relative to the part, and an induction heating coil supported by the base. The induction heating coil is disposed inside the bore of the part and is inductively coupled to the part. The induction heating coil is wound about a coil axis which is non-coaxial with a bore axis of the bore of the part during heating of the part.

A configurable universal wellbore reactor system designed for localized heat, pressure, and reaction control, to facilitate desired reactor conditions to transform feedstocks to recoverable products via diluent- based processes and/or reactions. The present system provides for a universal wellbore reactor for the diluent transformation of a diverse range of feedstocks, such as hydrocarbon waste, municipal waste, industrial waste, and/or mineral rich resources to recoverable product(s). Heat and temperature within the wellbore reactor are controlled by configuring various reactor components to govern the direction and magnitude of internal and external heat transfer within. Together with skin frequency heat transfer of ferromagnetic reactor piping at predetermined locations, the required temperature(s) and pressure(s) for the desired targeted reactions and/ or transformation reactions are achieved. The universal wellbore reactor system comprises one or more wellbore reactors with configurable features to improve reactor dynamics, reaction mechanisms and/or quality of the recoverable product, to facilitate a wide range of transformation reactions ranging from near ambient, to beyond the critical point of the diluent.

A configurable universal wellbore reactor system designed for localized heat, pressure, and reaction control, to facilitate desired reactor conditions to transform feedstocks to recoverable products via diluent- based processes and/or reactions. The present system provides for a universal wellbore reactor for the diluent transformation of a diverse range of feedstocks, such as hydrocarbon waste, municipal waste, industrial waste, and/or mineral rich resources to recoverable product(s). Heat and temperature within the wellbore reactor are controlled by configuring various reactor components to govern the direction and magnitude of internal and external heat transfer within. Together with skin frequency heat transfer of ferromagnetic reactor piping at predetermined locations, the required temperature(s) and pressure(s) for the desired targeted reactions and/ or transformation reactions are achieved. The universal wellbore reactor system comprises one or more wellbore reactors with configurable features to improve reactor dynamics, reaction mechanisms and/or quality of the recoverable product, to facilitate a wide range of transformation reactions ranging from near ambient, to beyond the critical point of the diluent.

The invention relates to a method of managing the heating of fluids flowing in an undersea pipe network (2-1) providing a connection between a surface installation (6) and at least one undersea production well (4), the method comprising releasably connecting at least one fluid heater station (14a, 14b) to an undersea pipe and controlling said heater station as a function of the mode of operation of the pipe network.

The invention provides a heater station (2) for heating fluids flowing in an undersea pipe network, the station comprising at least one heater duct (6) made of conductive material designed to be connected to an undersea pipe (4) for transporting fluids, and at least one solenoid (8) wound around a portion of the heater duct and electrically powered to heat the heater duct portion by electromagnetic induction.

A graphene-heating and heat preserving sleeve for a oilfield petroleum gathering pipeline includes a the high-temperature-resistant insulating layer (1), a graphene layer (2), a high-temperature-resistant ceramic layer (4), a waterproof and anti-static heat preservation layer (5), and a housing (6) that are tightly attached together in sequence; the two semi-cylindrical parts of the graphene-heating and heat-preserving sleeve are coupled together, so that the petroleum gathering pipeline is wrapped in the graphene-heating and heat-preserving sleeve. When electricity is applied to the electrode layers arranged at two ends of the graphene layer (2), under the action of an electric field, heat energy generated due to intense friction and collision between carbon atoms in the graphene is radiated out through far infrared rays with a wavelength of 5 to 14 microns.