Thermochemical sulphate reduction (TSR): experimental determination of reaction kinetics and implications of the observed reaction rates for petroleum reservoirs

Cross, Máire Fedelma; Manning, David; Bottrell, Simon H.; Worden, Richard H.

doi:10.1016/j.orggeochem.2004.01.005

Cited by 167 publications

(100 citation statements)

References 29 publications

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“…No experiment can fully reproduce natural conditions, not least since most geological processes take much longer than the time available to researchers. There are a variety of ways to speed up processes, including using higher temperatures than found in diagenetic systems; an example of this are routine rock-eval pyrolysis measurements of source rock maturity and richness (Hunt 1995), simulation of dolomitization (Kaczmarek & Sibley 2011) and measurements of the rate of redox reactions during thermochemical sulphate reduction (Cross et al 2004). Reaction rates can also be increased by using analogue materials that are more soluble than silicates or carbonates (Sathar et al 2012) and fluid compositions that are exceptionally far from equilibrium with the host rock (Heald & Renton 1966;Chermak & Rimstidt 1990;Lander et al 2008a).…”

Section: Experimental Simulation Of Diagenesismentioning

confidence: 99%

Petroleum reservoir quality prediction: overview and contrasting approaches from sandstone and carbonate communities

et al. 2018

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Abstract:The porosity and permeability of sandstone and carbonate reservoirs (known as reservoir quality) are essential inputs for successful oil and gas resource exploration and exploitation. This chapter introduces basic concepts, analytical and modelling techniques and some of the key controversies to be discussed in 20 research papers that were initially presented at a Geological Society conference in 2014 titled 'Reservoir Quality of Clastic and Carbonate Rocks: Analysis, Modelling and Prediction'. Reservoir quality in both sandstones and carbonates is studied using a wide range of techniques: log analysis and petrophysical core analysis, core description, routine petrographic tools and, ideally, less routine techniques such as stable isotope analysis, fluid inclusion analysis and other geochemical approaches. Sandstone and carbonate reservoirs both benefit from the study of modern analogues to constrain the primary character of sediment before they become a hydrocarbon reservoir. Prediction of sandstone and carbonate reservoir properties also benefits from running constrained experiments to simulate diagenetic processes during burial, compaction and heating. There are many common controls on sandstone and carbonate reservoir quality, including environment of deposition, rate of deposition and rate and magnitude of sea-level change, and many eogenetic processes. Compactional and mesogenetic processes tend to affect sandstone and carbonate somewhat differently but are both influenced by rate of burial, and the thermal and pressure history of a basin. Key differences in sandstone and carbonate reservoir quality include the specific influence of stratigraphic age on seawater composition (calcite v. aragonite oceans), the greater role of compaction in sandstones and the greater reactivity and geochemical openness of carbonate systems. Some of the key controversies in sandstone and carbonate reservoir quality focus on the role of petroleum emplacement on diagenesis and porosity loss, the role of effective stress in chemical compaction (pressure solution) and the degree of geochemical openness of reservoirs during diagenesis and cementation. This collection of papers contains case study-based examples of sandstone and carbonate reservoir quality prediction as well as modern analogue, outcrop analogue, modelling and advanced analytical approaches.Gold Open Access: This article is published under the terms of the CC-BY 3.0 license.Porosity and permeability (reservoir quality) exert fundamental controls on the economic viability of a petroleum accumulation (Blackbourn 2012).They need to be quantified from basin access and exploration, via appraisal and field development through secondary and tertiary recovery in order to

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Section: Experimental Simulation Of Diagenesismentioning

confidence: 99%

Petroleum reservoir quality prediction: overview and contrasting approaches from sandstone and carbonate communities

et al. 2018

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“…TSR is essentially a redox reaction between oxidative sulfates and reductive organic matter, where sulfates are reduced and hydrocarbons are oxidized (Machel, 1995(Machel, , 2001). Geological observations suggest that the hydrocarbons most easily oxidized by TSR are gasoline range branched and normal alkanes, followed by cyclic and mono-aromatic compounds (Krouse et al, 1988;Rooney, 1995;Manzano et al, 1997;Cross et al, 2004). Gaseous hydrocarbons associated with TSR have been detected in many subsurface sour gas (H 2 S) reservoirs.…”

Section: Introductionmentioning

confidence: 99%

“…Since then, a range of similar laboratory experiments with sulfate reactants and the control of various physicochemical parameters to simulate geological conditions have been conducted to study TSR processes and better understand the composition of TSR impacted gas reservoirs (Kiyosu, 1980;Trudinger et al, 1985;Kiyosu and Krouse, 1993;Cross et al, 2004;Yue et al, 2005;Ding et al, 2007;Zhang et al, 2007Zhang et al, , 2008aChen et al, 2009;Lu et al, 2010). Notably, MgSO 4 has been shown to rapidly accelerate TSR at relatively low temperatures (<350°C) and without the need for additional reduced sulfur (Gillaizeau and Tang, 2001;Tang et al, 2005;Zhang et al, 2007Zhang et al, , 2008a (Zhang et al, 2007(Zhang et al, , 2008a.…”

Section: Introductionmentioning

confidence: 99%

The role of metal sulfates in thermochemical sulfate reduction (TSR) of hydrocarbons: Insight from the yields and stable carbon isotopes of gas products

Lü

Greenwood

Chen

et al. 2011

Organic Geochemistry

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“…Evidently, the temperature range favoring the occurrence of pyrite hydrolysis is far higher than that for typical oil and gas reservoirs [48]. Based on the principle of Gibbs free-energy minimization and Equation (1) 3.2x10 -7 3.4x10 -7 3.6x10 -7…”

Section: Fig1 Effect Of Temperatures On the Standard Gibbs Function mentioning

confidence: 99%

Hydrolysis of Pyrite: a Possible Pathway for Generation of High Concentrations of H2S Gas in Deep-buried Reservoirs?

Ding¹,

Liu²

2017

Development in Earth Science

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Sulfates are conventionally regarded as the main sulfur source for H2S gas in sedimentary basins. In recent years, however, some theoretical insights and laboratory experiments indicate that accumulation of H2S in carbonate gas reservoirs may be associated with pyrite. In this paper, thermodynamic analysis and simulation experiments on the interactions between pyrite and water were carried out to investigate the possibility of pyrite hydrolysis in diagenetic environments. The results show that hydrolysis of pyrite possibly takes place above 275 o C. When temperature is above 425 o C, the reaction can proceed spontaneously. The temperature range favoring the occurrence of pyrite hydrolysis is far higher than that for typical oil and gas reservoirs. Thermodynamically pH has negligible influence on the formation of H2S during hydrolysis of pyrite in sedimentary basins. The results of our simulation experiments strongly imply that a small amount of pyrrhotite (FeS1.13) was formed during pyrite decomposition. Nevertheless, significant hydrolysis of pyrite did not occur under closed experimental conditions. Water may not act as an important hydrogen source for H2S generation in a typical natural gas reservoir.

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Thermochemical sulphate reduction (TSR): experimental determination of reaction kinetics and implications of the observed reaction rates for petroleum reservoirs

Cited by 167 publications

References 29 publications

Petroleum reservoir quality prediction: overview and contrasting approaches from sandstone and carbonate communities

Petroleum reservoir quality prediction: overview and contrasting approaches from sandstone and carbonate communities

The role of metal sulfates in thermochemical sulfate reduction (TSR) of hydrocarbons: Insight from the yields and stable carbon isotopes of gas products

Hydrolysis of Pyrite: a Possible Pathway for Generation of High Concentrations of H2S Gas in Deep-buried Reservoirs?

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