Patent•
Process of electric pipeline heating utilizing heating elements inserted in pipelines
28 Aug 1991-
TL;DR: In this paper, a process to clear pipelines carrying fluids viscous and/or rich in organic residues includes the introduction of a heating element inside a pipeline carrying the fluids through a coupling spool which is intercalated in the fluid-carrying pipeline.
Abstract: A process to clear pipelines carrying fluids viscous and/or rich in organic residues includes the introduction of a heating element inside a pipeline carrying the fluids through a coupling spool which is intercalated in the fluid-carrying pipeline. Simultaneously an electric current is applied to the heating element so that the heat generated by the heating element is transmitted to the viscous fluid or to the compacted residual mass inside the fluid-carrying pipeline, causing the detachment of those residues from the internal wall of the pipeline and re-establishing the conditions for fluid flow.
Citations
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Patent•
24 Oct 2002TL;DR: In this paper, an in situ process for treating an oil containing formation is provided, which includes providing heat from one or more heaters to at least a portion of the formation.
Abstract: An in situ process for treating an oil containing formation is provided. The process may include providing heat from one or more heaters to at least a portion of the formation. The heat may be allowed to transfer from the one or more heaters to a part of the formation such that heat from the one or more heat sources pyrolyzes at least some hydrocarbons within the part. Hydrocarbons may be produced from the formation.
350Â citations
Patent•
24 Oct 2002TL;DR: In this paper, a method of treating a kerogen and liquid hydrocarbon containing formation in situ may include providing heat from one or more heat sources to at least a portion of the formation.
Abstract: In an embodiment, a method of treating a kerogen and liquid hydrocarbon containing formation in situ may include providing heat from one or more heat sources to at least a portion of the formation. Heat may be allowed to transfer from the one or more heat sources to a part of the formation. In some embodiments, at least a portion of liquid hydrocarbons in the part may be mobilized. At least a portion of kerogen in the part may be pyrolyzed. In certain embodiments, a pressure within at least a part of the formation may be controlled. The pressure may be controlled to be at least about 2.0 bars absolute. A mixture may be produced from the formation.
338Â citations
Patent•
23 Apr 2004TL;DR: A process may include providing heat from one or more heaters to at least a portion of a subsurface formation as discussed by the authors, which is referred to as pyrolyzing.
Abstract: A process may include providing heat from one or more heaters to at least a portion of a subsurface formation. Heat may transfer from one or more heaters to a part of a formation. In some embodiments, heat from the one or more heat sources may pyrolyze at least some hydrocarbons in a part of a subsurface formation. Hydrocarbons and/or other products may be produced from a subsurface formation. Certain embodiments describe apparatus, methods, and/or processes used in treating a subsurface or hydrocarbon containing formation.
333Â citations
Patent•
24 Apr 2002TL;DR: In this paper, a mixture of hydrocarbons, H 2, and/or other formation fluids may be produced from the formation, and heat sources may be used to heat the formation.
Abstract: A oil shale formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H 2 , and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a pyrolysis temperature. Heat sources may be used to heat the formation. The heat sources may be positioned within the formation in a selected pattern.
332Â citations
Patent•
24 Oct 2002TL;DR: In this paper, an in situ process for treating a tar sands formation is provided, which includes providing heat from one or more heaters to at least a portion of the formation.
Abstract: An in situ process for treating a tar sands formation is provided. The process may include providing heat from one or more heaters to at least a portion of the formation. The heat may be allowed to transfer from the one or more heaters to a part of the formation such that heat from the one or more heat sources pyrolyzes at least some hydrocarbons within the part. Hydrocarbons may be produced from the formation.
324Â citations
References
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Patent•
19 Jan 1981
TL;DR: An apparatus for heating liquid in a pipe to prevent freezing of the liquid and for de-icing of frozen pipes includes an elongated housing constructed of plastic material and having a central bore and fittings for detachably coupling each end of the housing to the open end of a liquid pipe so that the central bore connects a first liquid pipe to a second liquid pipe as mentioned in this paper.
Abstract: An apparatus for heating liquid in a pipe to prevent freezing of the liquid and for de-icing of frozen pipes includes an elongated housing constructed of plastic material and having a central bore and fittings for detachably coupling each end of the housing to the open end of a liquid pipe so that the central bore connects a first liquid pipe to a second liquid pipe. The fittings each comprise a sleeve attachable to the pipe end, a sealing gasket between the end of the housing and an annular flange on the sleeve, and a threaded coupling nut cooperating with external threads on the housing and having a flange engaging the sleeve flange. The housing includes a lateral passageway intermediate its end communicating with the central bore and closed by a sealer valve having an opening with a normally closed penetrable seal of elastomeric material. An elongated electric resistance heating cable, including a probe containing an electric heating core at the free end thereof, is slidably insertable through the penetrable seal into the housing bore and then into one of the pipes through the open end thereof. An electric control means including a switch and rheostat is mounted on the housing and connected to the heating cable for controlling the operation and temperature of the heating cable. The cable is sufficiently rigid to allow the cable to be pushed through the sealer valve into the bore and flexible enough to follow the contour of the pipe bends as the cable is pushed into the pipe.
297Â citations
Patent•
08 Sep 1983
TL;DR: In this article, a method of removing paraffin build up from an oil well is proposed, which includes determining the location of a cooler portion of the oil well at which paraffIN build up occurs, introducing an inductance heating element down into the annular space between the oilwell tubing and the casing, positioning the induction heating element in the vicinity of the cooler portion and heating the inside surface of the tube to at least the temperature about that of the melting point.
Abstract: A method of removing paraffin build up from an oil well which includes determining the location of a cooler portion of the oil well at which paraffin build up occurs, introducing an inductance heating element down into the annular space between the oil well tubing and the oil well casing, positioning the inductance heating element in the vicinity of the cooler portion and inductance heating the inside surface of the oil well tube to at least the temperature about that of the melting point of paraffin. Preferably, the inside surface of the tube is heated on the down stroke of the oil well sucker rod and at the start of the sucker rod up stroke in order to strip the paraffin from the tubing. The outside surface of the sucker rod is heated on its up stroke and the inductance heater has multiple bands of coil to heat the same general area of the sucker rod as it travels.
170Â citations
Patent•
22 Oct 1969
TL;DR: In this article, the skin effect of AC heat quantity generated in the heat generating pipe is locally controlled by changing one or more factors of those consisting of cross-sectional area of the conductor line, resistivity of the same, inside diameter of the ferromagnetic pipe, resistivities and permeability of the material.
Abstract: In a heat-generating pipe comprising a ferromagnetic pipe and an insulated conductor line installed therethrough wherein an AC flows through concentratedly in the inner skin region thereof due to the skin effect of AC heat quantity generated in the heat generating pipe is locally controlled by changing one or more factors of those consisting of cross-sectional area of the conductor line, resistivity of the same, inside diameter of the ferromagnetic pipe, resistivity of the same and permeability of the same.
163Â citations
Patent•
27 Oct 1983
TL;DR: In this article, a system for recovery of oil, particularly viscous oil, from subsurface formations penetrated by highly deviated or horizontal bore holes by circulating therethrough a heated fluid is presented.
Abstract: A system for recovery of oil, particularly viscous oil, from subsurface formations penetrated by highly deviated or horizontal bore holes by circulating therethrough a heated fluid. The heated fluid is circulated through a flexible conduit which is pulled into the bore hole by thrust generating means at the forward end thereof. Power to operate the thrust generating means is also conducted through the conduit. Produced oil is returned via the conduit.
20Â citations
Patent•
08 Jan 1975
TL;DR: In this article, a skin effect current consisting of a ferromagnetic pipe and an insulated wire passed therethrough, a liquid is introduced in advance, and then the insulated wire having an arrangement for making an apparent specific gravity thereof almost equal to or smaller than the specific gravity of said liquid, whereby the frictional force between said polygonal pipe and insulated wire is reduced.
Abstract: In the construction of heat-generating pipe utilizing skin effect current consisting of a ferromagnetic pipe and an insulated wire passed therethrough, a liquid is introduced in advance in said ferromagnetic pipe, and then the insulated wire having an arrangement for making an apparent specific gravity thereof almost equal to or smaller than the specific gravity of said liquid is passed through the inside of the ferromagnetic pipe, whereby the frictional force between said ferromagnetic pipe and insulated wire is reduced, and passing of insulated wire through longer ferromagnetic pipe becomes easier.
16Â citations