Author
Goncalves Carlos Alberto De Ca
Bio: Goncalves Carlos Alberto De Ca is an academic researcher from Petrobras. The author has contributed to research in topics: Pipeline transport & Hydraulically activated pipeline pigging. The author has an hindex of 4, co-authored 7 publications receiving 432 citations.
Papers
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28 Aug 1991TL;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.
273 citations
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02 Jul 1992TL;DR: In this paper, a process and apparatus are provided to enhance the recovery of petroleum from onshore and offshore reservoirs, which includes simultaneous stimulation of the formation by elastic sound waves, created by a sonic source installed at the oil well so that the elastic sonic waves which are superimposed reduce the adherence forces in the layer between oil/water and the rock formation, and by oscillating electrical stimulation of same layer, as from the same wells subject to sonic treatment.
Abstract: A process and apparatus are provided to enhance the recovery of petroleum from onshore and offshore reservoirs. The process includes the simultaneous stimulation of the formation by elastic sound waves, created by a sonic source installed at the oil well so that the elastic sonic waves which are superimposed reduce the adherence forces in the layer between oil/water and the rock formation, and by the oscillating electrical stimulation of the same layer, as from the same wells subject to sonic treatment. The electricity heats the formation by using resistive heating, and thus increases the pressure, thus eliminating the surface tensions between the faces of the fluid as a consequence of the oscillatory action of the ions in the surfaces of the fluid and in addition, reducing the viscosity of the fluids. The process is achieved as the petroleum is produced in the wells thus treated, and the flow of petroleum acts then as a cooling agent which removes the heat released by the well area and thus allows a larger input of energy than in any other method known so far.
137 citations
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27 Mar 1975TL;DR: In this article, an oil burner for oil wells is described, in which the oil to be eliminated is admitted to a specially designed sprayer in which its mechanical atomization is brought about by the construction of said sprayer and its pneumatic atomisation is effected by means of inputting gas or air under pressure, the atomized product being ignited by spark ignitors and the flame produced being protected by a cylindrical casing.
Abstract: An oil burner for oil wells in which the oil to be eliminated is admitted to a specially designed sprayer in which its mechanical atomization is brought about by the construction of said sprayer and its pneumatic atomization is effected by means of inputting gas or air under pressure, the atomized product being ignited by means of spark ignitors and the flame produced being protected by a cylindrical casing. Said casing is provided with a front spray ring which injects water into the flame so as to eliminate the formation of black smoke, and a back spray ring for forming a water curtain which protects the platform against heat radiation from the flame. Said burner is mounted on a tubular support permitting its rotation so as to accompany the wind direction. The material combustion capacity of said burner can reach 30 cubic meters an hour, and for higher flow rates, various identical units can be coupled in parallel.
11 citations
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13 Sep 1991TL;DR: In this paper, an electrically conducting pipe is introduced in a terminal pipe carrying viscous fluid, which is put in contact with the internal steel layer of the terminal pipe by means of a fastening element, so as to prevent or eliminate deposits of organic residues onto the internal walls of the pipelines.
Abstract: A device electrically connects fluid-carrying pipelines, particularly subsea pipelines carrying viscous fluids and/or containing organic residues, allowing for the application of electricity through same, with the purpose of heating those pipelines, so as to prevent or eliminate deposits of organic residues onto the internal walls of the pipelines. The device permits also the utilization of electricity in combination with the simutaneous injection of special fluids. Basically, it includes an electrically conducting pipe (5) which is introduced in a terminal pipe (1) carrying viscous fluid, which is put in contact with the internal steel layer (3) of the terminal pipe (1) by means of electrically conducting fastening element (8).
7 citations
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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.
350 citations
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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.
338 citations
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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.
333 citations
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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.
332 citations
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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.
324 citations