Multivariate thermochemical sulphate reduction (TSR) low temperature origin for H2S production: A Fars Provinance gas field

Torghabeh, Amir Karimian; Kalantariasl, Azim; Ghorbani, Mohammad Reza; Nematollahi, Hasan

doi:10.1016/j.jngse.2021.103795

Cited by 8 publications

(5 citation statements)

References 27 publications

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“…Among the mechanisms described in the literature for the generation of H2S in oil and natural gas fields, the bacterial mechanism, the thermochemical mechanism associated with the oxidation of hydrocarbons and the thermochemical mechanism that comprises the thermal decomposition of organic matter rich in sulfide compounds stand out [8][9][10].…”

Section: Sources Naturaismentioning

confidence: 99%

“…This indicates that the concentrations of hydrogen sulfide found in nature are random and if there is a geological fault, leaks could possibly occur, the consequences of which are indeterminable. This mechanism can generate H2S that can vary from 10 ppm to 100,000 ppm (parts per million) [10].…”

Section: Interdisciplinarity and Innovation In Scientific Researchmentioning

confidence: 99%

“…2 H2S + SO2 → 3 S + H2O (10) Carbon disulfide (CS2) is employed as a solvent for oils, fats, and greases and is also used as a chemical intermediate in other chemical processes. The process of obtaining carbon disulfide takes place in a reactor where the molten sulfur reacts at high temperature, with a carbon source, preferably with natural gas (CH4).…”

Section: Emissions From Industrial Sourcesmentioning

confidence: 99%

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Critical evaluation of Hydrogen Sulfide (H2S) when associated with corrosion, worker health and safety

Carneiro,

Mainier,

Mainier

et al. 2023

Interdisciplinarity and Innovation in Scientific Research

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Hydrogen sulfide (H2S) is a colorless gas with a characteristic unpleasant odor (like rotten eggs) that is extremely toxic and corrosive. Due to its toxicity, H2S irritates the eyes and/or affects the nervous and respiratory systems. Concentrations on the order of 700 to 1500 ppm can kill a human in a matter of minutes. The media has presented several examples of H2S leaks that jeopardize human lives, threaten the integrity of industrial assets, and endanger the environment. This work aims to show the importance of knowledge of the origins and physicochemical properties of hydrogen sulfide in the direct and indirect relations with man, the environment and industrial equipment.

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Section: Sources Naturaismentioning

confidence: 99%

Section: Interdisciplinarity and Innovation In Scientific Researchmentioning

confidence: 99%

Section: Emissions From Industrial Sourcesmentioning

confidence: 99%

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Critical evaluation of Hydrogen Sulfide (H2S) when associated with corrosion, worker health and safety

Carneiro,

Mainier,

Mainier

et al. 2023

Interdisciplinarity and Innovation in Scientific Research

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“…(3) Electrochemical corrosion associated with H 2 S solution is a spontaneous process that may occur when the metal or alloy is in direct contact with an electrolyte, where the anodic and cathodic reactions occur simultaneously. In this case, the electrolyte is an H 2 S solution in water, which breaks up through the following reactions: (4) (5) (6) (7) The transfer of the electrons from the anodic region to its cathodic counterpart takes place through a metal conductor, with a diffusion of anions and cations in the solution completing the electrical circuit. The mechanism representing carbon steel (Fe) electrochemical corrosion in aqueous solutions containing hydrogen sulfide in acid pH or neutral/alkaline is presented:…”

Section: Introductionmentioning

confidence: 99%

Chemical Removal of Iron Sulfide Deposit in Pipes From Oil and Sour Gas Production

Mainier,

Mendonça de Alencar Junior,

Barros

2024

JCTM

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Hydrogen sulfide (H2S) and carbon dioxide (CO2) present in oil and natural gas cause mild steel corrosion, potentially resulting in formation of corrosion product layers on the internal surfaces of tubulars. In field experiences relating to the research reported herein, this has led to restrictions on the flow of water produced from a three-phase horizontal separator. This paper demonstrates a specific case of chemical removal of relatively hard, dark, and adherent heterogeneous deposits on the internal surface of the pipe. The phases involved in this process are iron sulfide, iron oxides and calcium carbonate existing as scales/corrosion products. To evaluate their dissolution, laboratory tests were conducted using hydrochloric acid (HCl) with additions of chlorine in the form of calcium hypochlorite [Ca(ClO)2]. Appropriate safety measures were taken employed, considering hazards associated with chlorine and toxicity of hydrogen sulfide. The treatment regime had 87 % effectiveness for scale removal in combination with propargyl alcohol (2-propyn-1-ol) as a corrosion inhibitor.

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“…Anaerobic activity of microorganisms means that early low-temperature degradation of such rocks is caused by nitrate reduction, and secondary dissolution is induced by pyrolysis-generated CO 2 gas and organic acids during burial (Druckman and Moore, 1985; Hu et al, 2019). Further dissolution can be caused by H 2 S generated by thermochemical sulfate reduction reactions (Fu et al, 2019; Kotarba et al, 2020; Machel, 2001; Moore and Heydary, 1997; Torghabeh et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Genesis and pore evolution of dolomite reservoir in the Majiagou Formation, Ordos Basin, China

Wang

Tan

et al. 2021

Energy Exploration & Exploitation

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In gypsum–carbonate rock assemblages, multistage and complex fluids control the formation of dolomite reservoirs that are a focus of hydrocarbon exploration. It is difficult to determine the types of dolomite reservoirs and their formation mechanisms due to the diverse rock assemblages and multiple stages of diagenesis. In this study, we investigated the petrology, reservoir physical properties, and geochemistry of the 6th sub-member of member five of the Majiagou Formation (i.e. Ma56) in the Ordos Basin, China. These data were used to determine the nature and types of gypsum–carbonate rocks, and constrain their reservoir characteristics and diagenetic history, and fluid-related mechanisms that led to dolomite reservoir development and preservation. The Ma56 was deposited on a restricted evaporatic platform in the North China Craton, and contains three main types of dolomite reservoirs with variable types of reservoir space. Dolomite reservoir formation was closely related to penecontemporaneous dolomitization, karstification, and differential cementation. Early large-scale dolomitization produced dolomitized carbonate sediments that were resistant to compaction and dissolution, which was conducive to the preservation of primary and secondary pores. The intermittent exposure and dissolution of mound–shoal facies sediments, due to high-frequency sea-level fluctuations, was the dominant mechanism for formation of secondary dissolved pores and high-quality reservoirs. During burial, differential cementation occurred due to interaction between fluids and pore size, which determined the extent of reservoir preservation. In general, the studied dolomite reservoirs have undergone multistage diagenesis and alteration, which led to complex and multistage development of the reservoir porosity. However, the reservoir lithology and pore space developed mostly in the depositional to penecontemporaneous stages. Our results provide new insights into the origins of deeply buried dolomite reservoirs in carbonate–evaporite successions.

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Multivariate thermochemical sulphate reduction (TSR) low temperature origin for H2S production: A Fars Provinance gas field

Cited by 8 publications

References 27 publications

Critical evaluation of Hydrogen Sulfide (H2S) when associated with corrosion, worker health and safety

Critical evaluation of Hydrogen Sulfide (H2S) when associated with corrosion, worker health and safety

Chemical Removal of Iron Sulfide Deposit in Pipes From Oil and Sour Gas Production

Genesis and pore evolution of dolomite reservoir in the Majiagou Formation, Ordos Basin, China

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