Effects of Acid Gas Reinjection on Enhanced Natural Gas Recovery and Carbon Dioxide Geological Storage: Investigation of the Right Bank of the Amu Darya River

Li, Qi; Li, Xiaying; Niu, Zhiyong; Kuang, Dongqin; Ma, Jianli; Liu, Xuehao; Sun, Yong; Li, Xiaochun

doi:10.1002/9781118938706.ch12

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…Research on H₂S-water and acid gas-water systems lags behind CO₂-water due to the difficult reservoir conditions and the toxic and corrosive nature of H₂S. Most research has been on enhanced oil recovery (EOR) [72,115]. Bachu and co-workers [116][117][118] have done extensive work in Canada on CO₂ and acid gases during geosequestration using analytical models to approximate behaviour of injection plumes.…”

Section: Role In Geosequestrationmentioning

confidence: 99%

Hydrogen sulphide

Ofori

2023

Sulfur Dioxide Chemistry and Environmental Impact [Working Title]

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Hydrogen sulphide (H₂S), a highly toxic and corrosive molecule, is typically found in hydrocarbon reservoirs, sewers and in the waste industry. It can be extremely problematic during drilling, production and processing. This chapter offers a synopsis of H₂S, which is sulphur in its most reduced form of all its numerous oxidation states. It delves briefly into H₂S’s history on planet earth before there was life all through to its diminishment during the latter Proterozoic era to present day. It also investigates its various forms of generation and production, and its effect and impact especially as an occupation-based hazard. Its utilisation in enhanced oil recovery (EOR) as a standalone or together with carbon dioxide (CO₂) and its role in geosequestration together with CO₂ is explored.

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Section: Role In Geosequestrationmentioning

confidence: 99%

Hydrogen sulphide

Ofori

2023

Sulfur Dioxide Chemistry and Environmental Impact [Working Title]

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“…Consequently, Acid Gas Injection (AGI) into depleted oil and gas reservoirs is gaining increasing attention as an alternative to mitigate greenhouse gas emissions and to avoid the costs of desulfurization. Actually, acid gas injection operations have been approved worldwide (British Columbia Geological Survey, 2003;Carroll et al, 2009;Khan et al, 2013;Li et al, 2017;Miwa et al, 2002), and feasibility of AGI operations in China has been analyzed (Li et al, 2013;Liu et al, 2012). However, the implementation of acid gas injection requires a proper assessment of the effects induced by the presence of acid gas.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and feasibility assessment of acid gas injection in a carbonate formation of the Tarim Basin, China

Zhang

Zheng

et al. 2020

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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An enormous amount of acid gas, containing carbon dioxide (CO2) and hydrogen sulfide (H2S), is generated in the exploitation of oil and gas reservoirs in the Tarim Basin, China. An appropriate management plan is required to safely dispose of the acid gas, and common strategy considered for the safe disposal of acid gas is the injection of it into deep formations – this strategy mitigates greenhouse gas emissions and avoids costs associated with desulfurization. A feasibility assessment of acid gas injection requires a detailed investigation of the potential physical and geochemical impacts. Reactive transport simulations based on the mineralogical composition and the hydrochemical characteristics of a carbonate formation in the Tarim Basin were conducted to identify the physical and geochemical interactions of acid gas with the mineral matrix and formation water. Acid gas (59% CO2 and 41% H2S) was injected at a constant rate of 19 200 Nm3/d for 25 years, and the simulation was run by the TMVR_EOSG module of the TOUGHREACT code for a period of 10 000 years. The results indicate that the minimum liquid saturation is much larger than the residual water saturation, and the pressure buildup is below the allowable pressure increase. Additionally, the porosity change is found to be negligible due to the small changes in calcite and quartz in the volume fraction. From this perspective, acid gas injection in the carbonate formation of the Tarim Basin seems feasible. Furthermore, the fast breakthrough of CO2 can provide an advanced warning of a potential breakthrough of acid gas. Last, the injection rate can be increased to accelerate acid gas trapping, and the results could be used as guidance for future acid gas injection operations.

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Effects of Acid Gas Reinjection on Enhanced Natural Gas Recovery and Carbon Dioxide Geological Storage: Investigation of the Right Bank of the Amu Darya River

Cited by 2 publications

References 9 publications

Hydrogen sulphide

Hydrogen sulphide

Numerical simulation and feasibility assessment of acid gas injection in a carbonate formation of the Tarim Basin, China

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