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97006 EFFECT OF ASPHALTENE DEPOSITION ON THE INTERNAL CORROSION IN THE OIL AND GAS INDUSTRY

Product Number: 51300-97006-SG
ISBN: 97006 1997 CP
Author: Carlos A. Palacios, Jose L. Morales, Alfredo Viloria
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Crude oil from Norte de Monagas field, in Venezuela, contains large amounts of asphaltenes. Some of them are very unstable with a tendency to precipitate. Because liquid is carried over from the separation process in the flow stations, asphaltenes are also present in the gas gathering and transmission lines, precipitating on the inner wail of pipelines. The gas gathering and transmission lines contain gas with high partial pressures of CO2, some H2S and are water saturated; therefore, inhibitors are used to control internal corrosion. There is uncertainty on how inhibitors periorm in the presence of asphaltene deposition. The purpose of this paper is to describe the causes that enhance asphaltene deposition in gas pipelines and present some results from an ongoing research project carried out by the Venezuelan Oil Companies. Key Words: Asphaltenes, Inhibhors
Crude oil from Norte de Monagas field, in Venezuela, contains large amounts of asphaltenes. Some of them are very unstable with a tendency to precipitate. Because liquid is carried over from the separation process in the flow stations, asphaltenes are also present in the gas gathering and transmission lines, precipitating on the inner wail of pipelines. The gas gathering and transmission lines contain gas with high partial pressures of CO2, some H2S and are water saturated; therefore, inhibitors are used to control internal corrosion. There is uncertainty on how inhibitors periorm in the presence of asphaltene deposition. The purpose of this paper is to describe the causes that enhance asphaltene deposition in gas pipelines and present some results from an ongoing research project carried out by the Venezuelan Oil Companies. Key Words: Asphaltenes, Inhibhors
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