Modelling of the Long-Term Acid Gas Sequestration and Its Prediction: A Unique Case Study

Szott, W.; Łętkowski, Piotr; Gołąbek, A.; Miłek, Krzysztof

doi:10.3390/en13184701

Cited by 5 publications

(7 citation statements)

References 16 publications

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“…Z Zhang and Agarwal 23 developed a numerical simulation with TOUGH2 simulator to determine the outcomes of CO 2 sequestration using water alternating gas (WAG) technique in an aquifer and showed that WAG is a reliable and risk-free (relative to gas injection) method since it reduces gas vertical migration. W Szott et al 24 used a compositional simulator to study and assess acid gas sequestration in an aquifer beneath a natural gas reservoir. The simulation was run for 24 years to obtain data for leakage risk evaluation and estimation of storage capacity.…”

Section: Simulation Studiesmentioning

confidence: 99%

Mechanistic analysis of acid gas storage and oil recovery in naturally fractured reservoirs using single matrix block approach

Shirzad,

Sadeghzadeh,

Assareh

2024

Greenhouse Gases

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The objective of this study is to assess the storage of acid gas, containing CO2 and H2S, in a depleted naturally fractured reservoir (NFR) using single matrix block (SMB) approach. The acid gas dissolution in oil is considered by Peng‐Robinson equation of state and compositional simulation. The PHREEQC package is used to determine acid gas solubility in formation brine. Three types of acid gases with different compositions are used for this study and their swelling behavior and miscibility in relation to the reservoir oil are analyzed. An SMB model, with a matrix block surrounded by fractures, is constructed, and validated for simulation of a real experiment. The simulation is conducted for synthetic and real reservoir fluids when the oil is in its residual saturation. A sensitivity analysis is performed to study the effects of key parameters, such as acid gas composition, reservoir pressure, permeability, porosity and matrix height on the storage capacity and oil recovery factor. The matrix has a volume of 27 m3 and about half of acid gas storage is achieved in the first 5 years while the simulations are run for 30 years. The results show that up to 90% of remained oil is recoverable, and more than 0.67 kmol of acid gas per cubic meter of matrix is stored whether matrix contains a real oil or a synthetic one. Higher storage is achieved for higher matrix porosities and heights and large H2S proportion in acid gas. In all cases about 10% of acid gas is trapped in water and the remaining 90% is dissolved in oil. The mineral trapping was more active in CO2‐rich acid gases. While about 10 kg of the matrix rock was dissolved in the acidic brine when the acid gas contained H2S, the amount of the dissolved minerals in acidic brine resulted from the injection of CO2‐rich acid gas was more than 16 kg. Finally, this study gives a comparative analysis of the storage performance of acid gas mixture and pure CO2. © 2024 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Simulation Studiesmentioning

confidence: 99%

Mechanistic analysis of acid gas storage and oil recovery in naturally fractured reservoirs using single matrix block approach

Shirzad,

Sadeghzadeh,

Assareh

2024

Greenhouse Gases

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“…The analysed geological structure includes the natural gas field located in the southern part of the Pre-Sudetian Monocline, Poland [21]. It forms an anticline with two local uprisings.…”

Section: Structure Modellingmentioning

confidence: 99%

“…A simulation model of the structure was constructed and calibrated [21]. A geological model was generated based on standard input data including structural maps of the above listed formations.…”

Section: Structure Modellingmentioning

confidence: 99%

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Analysis of Reservoir Fluid Migration in the Process of CO2 Sequestration in a Partially Depleted Gas Reservoir

Szott

Miłek

2021

Energies

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This paper addresses problems of reservoir fluid migrations in the process of CO2 sequestration in a partially depleted petroleum reservoir. A detailed analysis of the migrations is required to obtain fundamental characteristics of a sequestration structure, including estimation of its sequestration capacity and leakage risks. The paper presents a general discussion of the relevant mechanisms and their contributions to the analysed issues. The proposed approach to solve the problems relies on the usage of numerical structure modelling and simulations of the sequestration processes on numerical models of the structure. It is applied to a selected geological structure comprising a partially depleted gas reservoir. The modelling includes key types of reservoir fluid migrations: viscous multiphase transport and convection transport. It also takes into account other phenomena that affect fluid migrations including injected gas solubility in the formation water and gas trapping by capillary forces. Correspondingly, the leakage risks are associated with distinct leakage pathways (beyond the structural trap, to the caprock, via activated fractures). All these cases are separately modelled and their detailed characteristics are presented and discussed. The final results of the fluid migrations and their consequences for the leakage events are discussed and some generalized conclusions are drawn from the approach employed in the study.

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“…Szott et al [6] develop a model for an ongoing project (24 years) for acid gas sequestration in a deep geological structure. The model is based on the available operational and monitoring data, and it can help determine the basic characteristics of the sequestration process.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Fluid Flow and Heat Transfer in Petroleum Industries and Geothermal Applications 2020

Massoudi

2021

Energies

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In this Special Issue, all aspects of fluid flow and heat transfer in geothermal applications, including the ground heat exchanger, conduction, and convection in porous media, are considered. The emphasis here is on mathematical and computational aspects of fluid flow in conventional and unconventional reservoirs, geothermal engineering, fluid flow and heat transfer in drilling engineering, and enhanced oil recovery (hydraulic fracturing, steam-assisted gravity drainage (SAGD), CO2 injection, etc.) applications.

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Modelling of the Long-Term Acid Gas Sequestration and Its Prediction: A Unique Case Study

Cited by 5 publications

References 16 publications

Mechanistic analysis of acid gas storage and oil recovery in naturally fractured reservoirs using single matrix block approach

Mechanistic analysis of acid gas storage and oil recovery in naturally fractured reservoirs using single matrix block approach

Analysis of Reservoir Fluid Migration in the Process of CO2 Sequestration in a Partially Depleted Gas Reservoir

Mathematical Modeling of Fluid Flow and Heat Transfer in Petroleum Industries and Geothermal Applications 2020

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