Reactive transport modeling of long-term CO2 sequestration mechanisms at the Shenhua CCS demonstration project, China

Yang, Guodong; Li, Yilian; Atrens, Andrej; Dan-qing, Liu; Wang, Yongsheng; Li, Jia; Lu, Yu

doi:10.1007/s12583-016-0919-6

Cited by 20 publications

(15 citation statements)

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“…The top and bottom boundaries of the model are regarded as impermeable layers. Similar models have been used in previous studies [8,31,33]. The injection interval is 40 m thick at the bottom of the injection well.…”

Section: Model Setup and Simulation Parametersmentioning

confidence: 98%

“…The results indicate that physical properties of fluid and host rock control the way CO 2 moves, while chemical processes dominate the fate of CO 2 [6][7][8]. Factors affecting CO 2 migration mainly include the following: (1) density difference of fluid; (2) penetration pathway; (3) capillary pressure; (4) injection rates; and (5) formation pressure [9][10][11].…”

Section: Introductionmentioning

confidence: 98%

“…These studies indicate that dissolution of host rock contributes to the CO 2 mineral trapping. The pattern of mineral dissolution and precipitation is different under different field conditions [7,8,15]. …”

Section: Introductionmentioning

confidence: 99%

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Simulation and Analysis of Long-Term CO₂ Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

Yang

et al. 2017

Geofluids

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The Shenhua CO 2 capture and sequestration (CCS) project has achieved its goal of injecting 100,000 tons/year CO 2 into the saline aquifers of the Ordos Basin. This study analyzes the geochemical interactions between CO 2 , formation fluid, and host rock of the major formations in the Ordos Basin, assesses the CO 2 trapping capabilities, and predicts the final mineral forms of injected CO 2 . Reactive transport simulations are performed using a 2D radial model, which represents a homogeneous formation. The results show that 80% of injected CO 2 remains as free supercritical gas in each formation after injection, while most of CO 2 is sequestrated in different carbonate mineral assemblages after 10,000 years. The CO 2 mineral trapping capacities of the Shiqianfeng and Shihezi formations are smaller than the Liujiagou formation. Calcite, dawsonite, and siderite are stable CO 2 trapping minerals, while dolomite, ankerite, and magnesite are not. The increase in porosity and permeability of the three formations in the first 100 years agrees with the observation from the Shenhua CCS Project. Also the decrease in porosity and permeability after 100 years shows agreement with other modelling studies using the similar methods. These results are useful for the evaluation of the geochemical process in long-term CO 2 geological storage.

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Section: Model Setup and Simulation Parametersmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

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Simulation and Analysis of Long-Term CO₂ Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

Yang

et al. 2017

Geofluids

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“…Aside from the previously mentioned large-scale CCS projects, there are some small-scale projects as well. These include the Ketzin pilot site [78,79], the Illinois Basin-Decatur Project [80], and the Shenhua CCS demonstration project [81]. These projects have been conducted with detailed modeling and monitoring during operation, which demonstrates the safety of this technology and helps increase the public acceptance.…”

Section: Co 2 Storage In Saline Aquifersmentioning

confidence: 99%

A Review of CO2 Storage in View of Safety and Cost-Effectiveness

et al. 2020

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The emissions of greenhouse gases, especially CO2, have been identified as the main contributor for global warming and climate change. Carbon capture and storage (CCS) is considered to be the most promising strategy to mitigate the anthropogenic CO2 emissions. This review aims to provide the latest developments of CO2 storage from the perspective of improving safety and economics. The mechanisms and strategies of CO2 storage, focusing on their characteristics and current status, are discussed firstly. In the second section, the strategies for assessing and ensuring the security of CO2 storage operations, including the risks assessment approach and monitoring technology associated with CO2 storage, are outlined. In addition, the engineering methods to accelerate CO2 dissolution and mineral carbonation for fixing the mobile CO2 are also compared within the second section. The third part focuses on the strategies for improving economics of CO2 storage operations, namely enhanced industrial production with CO2 storage to generate additional profit, and co-injection of CO2 with impurities to reduce the cost. Moreover, the role of multiple CCS technologies and their distribution on the mitigation of CO2 emissions in the future are summarized. This review demonstrates that CO2 storage in depleted oil and gas reservoirs could play an important role in reducing CO2 emission in the near future and CO2 storage in saline aquifers may make the biggest contribution due to its huge storage capacity. Comparing the various available strategies, CO2-enhanced oil recovery (CO2-EOR) operations are supposed to play the most important role for CO2 mitigation in the next few years, followed by CO2-enhanced gas recovery (CO2-EGR). The direct mineralization of flue gas by coal fly ash and the pH swing mineralization would be the most promising technology for the mineral sequestration of CO2. Furthermore, by accelerating the deployment of CCS projects on large scale, the government can also play its role in reducing the CO2 emissions.

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“…Local CO 2 leakage could lead to acidification of groundwater, which seriously cause suffocation of surface creatures. Also, it could cause the increase of CO 2 concentration in atmosphere, and even lead to gas explosion [9][10][11][12]. As a barrier to prevent CO 2 leakage, caprock has become the focus of research.…”

Section: Introductionmentioning

confidence: 99%

Geochemical modeling of changes in caprock permeability caused by CO₂–brine–rock interactions under the diffusion mechanism

Yang

et al. 2019

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

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Geologic Carbon Sequestration (GCS) has been widely considered as a significant means for reducing CO2 emissions to address global climate change. The caprock sealing plays a key role in determining permanence and security of carbon dioxide (CO2) storage in geologic formations. This study presents geochemical modeling of CO2–brine–rock interactions in a deep saline aquifer in the Jianghan Basin, which is a potential target for CO2 injection and geological storage. A one-dimensional model was developed to investigate the changes in caprock permeability caused by CO2–brine–rock interactions under the diffusion mechanism. The results show that the dissolution of K-feldspar and albite plays a key role in the variation of caprock permeability, which makes permeability increased by 60% at the bottom of caprock. The caprock permeability is increased with temperature by enhancing the minerals dissolution of caprocks. In addition, the common-ion effect generated by the increased salinity inhibits the minerals dissolution in caprock.

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Reactive transport modeling of long-term CO2 sequestration mechanisms at the Shenhua CCS demonstration project, China

Cited by 20 publications

References 50 publications

Simulation and Analysis of Long-Term CO₂ Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

Simulation and Analysis of Long-Term CO₂ Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

A Review of CO2 Storage in View of Safety and Cost-Effectiveness

Geochemical modeling of changes in caprock permeability caused by CO₂–brine–rock interactions under the diffusion mechanism

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Reactive transport modeling of long-term CO2 sequestration mechanisms at the Shenhua CCS demonstration project, China

Cited by 20 publications

References 50 publications

Simulation and Analysis of Long-Term CO2 Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

Simulation and Analysis of Long-Term CO2 Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

A Review of CO2 Storage in View of Safety and Cost-Effectiveness

Geochemical modeling of changes in caprock permeability caused by CO2–brine–rock interactions under the diffusion mechanism

Contact Info

Product

Resources

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Simulation and Analysis of Long-Term CO₂ Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

Simulation and Analysis of Long-Term CO₂ Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

Geochemical modeling of changes in caprock permeability caused by CO₂–brine–rock interactions under the diffusion mechanism