Influence of Brine–Rock Parameters on Rock Physical Changes During CO2 Sequestration in Saline Aquifer

Yusof, Muhammad Aslam Md; Mohamed, Muhammad Azfar; Akhir, Nur Asyraf Md; Ibrahim, Mohamad Arif; Saaid, Ismail Mohd; Idris, Ahmad Kamal; Idress, Mazlin; Matali, Awangku Alizul Azahari Awangku

doi:10.1007/s13369-021-06110-8

Cited by 16 publications

(6 citation statements)

References 52 publications

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“…Numerical experiments conducted by Roels et al 39 suggests that precipitated salt may accumulate far from the wellbore. However, other research works 6 , 7 , 9 , 17 , 22 , 40 report that precipitated salt accumulates near the wellbore where the fluxes and brine vaporization are the highest. However, Berntsen et al 41 identified three different drying regimes in different wellbore regions when they investigated drying and salt clogging under near-realistic radial CO 2 flow conditions.…”

Section: Introductionmentioning

confidence: 92%

“…The prerequisites for successful Carbon Capture, Utilization and Storage (CCUS) are robust containment efficiency, adequate storage volume and sufficient well injectivity, to inject large quantities of CO 2 at practical flow rates 1 . Deep saline formations are suitable storage resources for CCUS based on their storage capacity and containment 2 – 7 . However, salt precipitation due to brine vaporization, especially in the vicinity of the wellbore, during CO 2 injection could affect CO 2 injectivity in deep saline formations 8 – 13 .…”

Section: Introductionmentioning

confidence: 99%

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Experimental and theoretical investigation of the mechanisms of drying during CO2 injection into saline reservoirs

Sokama‐Neuyam

Yusof

Owusu

et al. 2023

Sci Rep

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A viable CO2 storage resource must have sufficient storage capacity, reliable containment efficiency and adequate well injectivity. Deep saline formations stand out in terms of storage capacity and containment efficiency. However, formation brine dry-out and salt precipitation in the near well region could impair CO2 injectivity in deep saline reservoirs, thus reducing their potential for CO2 storage. Core-flood experiments and analytical modelling were used to investigate various mechanisms of external and internal salt precipitation. Particularly, the impact of the extension of the dry-out region on CO2 injectivity was investigated. It was found that, for high permeability rocks, injection of CO2 at relatively low injection rates could result in salt cake deposition at the injection inlet especially under high salinity conditions. It was also found that extension of the dry-out region does not have significant impact on CO2 injectivity. Although the magnitude of CO2 injectivity impairment increased more than two-fold when initial brine salinity was doubled, real-time changes in CO2 injectivity during the drying process was found to be independent of initial brine salinity. We have shown that the bundle-of-tubes model could provide useful insight into the process of brine vaporization and salt deposition in the dry-out region during CO2 injection. This work provides vital understanding of the effect of salt precipitation on CO2 injectivity.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical investigation of the mechanisms of drying during CO2 injection into saline reservoirs

Sokama‐Neuyam

Yusof

Owusu

et al. 2023

Sci Rep

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“…Therefore, the impact of impurities should be considered in evaluating sealed formations. Yusof et al 103 considered more factors and combined four influencing factors: salt water type, salinity, reactive pore surface area, and contact time to conduct a static CO 2 −rock−water test. The rock used was sandstone under potential geological storage conditions in the Malay and Lukonia basins of the South China Sea.…”

Section: Storage Sitesmentioning

confidence: 99%

Recent Advances in Geological Storage: Trapping Mechanisms, Storage Sites, Projects, and Application of Machine Learning

Feng

et al. 2023

Energy Fuels

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A significant amount of carbon dioxide (CO2) is being released into the atmosphere as a result of the acceleration of industrialization and increased energy consumption, which are causing a rise in world temperatures. Despite the fact that nations all over the world have actively participated in CO2 storage projects, there is still not enough to moderate global temperatures. Therefore, there is an urgent need for the development of CO2 sequestration technologies. The main geological storage trapping mechanisms are discussed in this work along with an analysis of the major influencing variables. Additionally, the benefits and drawbacks of significant storage locations and current research hotspots are explored. Storage project development across the globe is outlined. The use of machine learning for CO2 sequestration is reviewed toward the end. This extensive review reveals that the main variables affecting CO2 capture capacity are hydrodynamic and geochemical. The sequestration capability of various storage sites is significantly influenced by the reservoir characteristics and implementation methodologies. The successful implementation of the storage project is determined by local policies and public support. The development of machine learning technologies makes storage projects safer and more dependable.

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“…In ref. [41][42][43], the authors investigated both mineral and solubility trapping during CO 2 disposal in aquifers, analyzing porosity and permeability variations. In ref.…”

Section: Introductionmentioning

confidence: 99%

Gridding Effects on CO2 Trapping in Deep Saline Aquifers

et al. 2022

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Three-dimensional numerical models of potential underground storage and compositional simulation are a way to study the feasibility of storing carbon dioxide in the existing geological formations. However, the results of the simulations are affected by many numerical parameters, and we proved that the refinement of the model grid is one of them. In this study, the impact of grid discretization on CO2 trapping when the CO2 is injected into a deep saline aquifer was investigated. Initially, the well bottom-hole pressure profiles during the CO2 injection were simulated using four different grids. As expected, the results confirmed that the overpressure reached during injection is strongly affected by gridding, with coarse grids leading to non-representative values unless a suitable ramp-up CO2 injection strategy is adopted. Then, the same grids were used to simulate the storage behavior after CO2 injection so as to assess whether space discretization would also affect the simulation of the quantity of CO2 trapped by the different mechanisms. A comparison of the obtained results showed that there is also a significant impact of the model gridding on the simulated amount of CO2 permanently trapped in the aquifer by residual and solubility trapping, especially during the few hundred years following injection. Conversely, stratigraphic/hydrodynamic trapping, initially confining the CO2 underground due to an impermeable caprock, does not depend on gridding, whereas significant mineral trapping would typically occur over a geological timescale. The conclusions are that a fine discretization, which is acknowledged to be needed for a reliable description of the pressure evolution during injection, is also highly recommended to obtain representative results when simulating CO2 trapping in the subsurface. However, the expedients on CO2 injection allow one to perform reliable simulations even when coarse grids are adopted. Permanently trapped CO2 would not be correctly quantified with coarse grids, but a reliable assessment can be performed on a small, fine-grid model, with the results then extended to the large, coarse-grid model. The issue is particularly relevant because storage safety is strictly connected to CO2 permanent trapping over time.

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Influence of Brine–Rock Parameters on Rock Physical Changes During CO2 Sequestration in Saline Aquifer

Cited by 16 publications

References 52 publications

Experimental and theoretical investigation of the mechanisms of drying during CO2 injection into saline reservoirs

Experimental and theoretical investigation of the mechanisms of drying during CO2 injection into saline reservoirs

Recent Advances in Geological Storage: Trapping Mechanisms, Storage Sites, Projects, and Application of Machine Learning

Gridding Effects on CO2 Trapping in Deep Saline Aquifers

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