Hydrogen Sulfide Absorption Phenomena in Brine/Oil Mixtures

    Authors

    L. Zea; D. Cooper;R. Kumar

    Comments

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    Abbreviated Journal Title

    Spe J.

    Keywords

    OIL-RESERVOIRS; BACTERIA; SYSTEM; Engineering, Petroleum

    Abstract

    Brine and oil absorb hydrogen sulfide (H(2)S) under pressure in the underground oil reservoir and then undergo a decompression during the extraction process, during which a certain amount of H(2)S is released from the liquid phase. This paper reports experimental data on how much of the corrosive gas is absorbed into different brine/oil mixtures [0, 33, 66, and 100% water cuts (WCs)]. Different reservoir-simulation scenarios were created at 20 and 70 atm at room temperature. H(2)S gas concentration was varied as tests were conducted with 50, 100, and 300 ppm in nitrogen. These experiments took place in an autoclave system that simulates the hydrostatic process that occurs inside a reservoir. This paper also reports Henry's law constants for H(2)S in different WCs. It is found that for all WCs, total pressure plays only a minor role in the absorption phenomena when the initial H(2)S concentration is increased. In addition, the highest mass-absorption ratios are found at lower H(2)S concentrations.

    Journal Title

    Spe Journal

    Volume

    16

    Issue/Number

    4

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    931

    Last Page

    939

    WOS Identifier

    WOS:000298574600017

    ISSN

    1086-055X

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