Assessment of the effective CO2 storage capacity in the Beibuwan Basin, offshore of southwestern P. R. China

Li, Pengchun; Zhou, Di; Zhang, Cuimei; Chen, Guanghao

doi:10.1016/j.ijggc.2015.03.033

Cited by 30 publications

(27 citation statements)

References 10 publications

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“…It is now more important than ever to search for the available CO 2 reservoir sites in the subsurface locations and to prevent the accidental leakage of CO 2 originating from a geochemical reaction. However, the development of a new quantitative parameter for evaluating the scCO 2 involved geochemical reaction in sequestration conditions has almost never been attempted in previous studies [40,41].…”

Section: Introductionmentioning

confidence: 99%

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

et al. 2017

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Changes in the physical properties of the supercritical CO 2 (scCO 2 ) reservoir rock is one of the most important factors in controlling the storage safety at a scCO 2 sequestration site. According to recent studies, it is probable that geochemical reactions influence changes in the rock properties after a CO 2 injection in the subsurface, but quantitative data that reveal the interrelationship of the factors involved and the parameters needed to evaluate the extent of scCO 2 -rock-groundwater reactions have not yet been presented. In this study, the potential for employing the surface roughness value (SR RMS ) to quantify the extent of the scCO 2 involved reaction was evaluated by lab-scale experiments. For a total of 150 days of a simulation of the scCO 2 -sandstone-groundwater reaction at 100 bar and 50 • C, the trends in changes in the physical rock properties, pH change, and cation concentration change followed similar logarithmic patterns that were significantly correlated with the logarithmic increase in the SR RMS value. These findings suggest that changes in surface roughness can quantify the extent of the geochemical weathering process and can be used to evaluate leakage safety due to the progressive changes in rock properties at scCO 2 storage sites.

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Section: Introductionmentioning

confidence: 99%

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

et al. 2017

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“…In this basin, the most significant source rock for oil and gas is the Mid-to-Upper-Eocene Liushagang Formation deposited at the peak of the lacustrine development. In this formation, the dark mudstone has got a thickness ranging from tens of meters to over 1000 m and contains abundant organic materials (primarily type II kerogen) [33]. In the area, the oil-and gas-bearing sags are Weizhou, Wushi, and Fushan where oil and gas explorations have been conducted more than those in the other sections [33,34].…”

Section: Study Areamentioning

confidence: 99%

Fractal Properties of Various Clay Minerals Obtained from SEM Images

et al. 2021

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Clay minerals significantly alter the pore size distribution (PSD) of the gas hydrate-bearing sediments and sandstone reservoir rock by adding an intense amount of micropores to the existing intragranular pore space. Therefore, in the present study, the internal pore space of various clay groups is investigated by manually segmenting Scanning Electron Microscopy (SEM) images. We focused on kaolinite, smectite, chlorite, and dissolution holes and characterized their specific pore space using fractal geometry theory and parameters such as pore count, pore size distribution, area, perimeter, circularity, and density. Herein, the fractal properties of different clay groups and dissolution holes were extracted using the box counting technique and were introduced for each group. It was observed that the presence of clays complicates the original PSD of the reservoir by adding about 1.31-61.30 pores/100 μm2 with sizes in the range of 0.003-87.69 μm2. Meanwhile, dissolution holes complicate the pore space by adding 4.88-8.17 extra pores/100 μm2 with sizes in the range of 0.06-119.75 μm2. The fractal dimension ( D ) and lacunarity ( L ) values of the clays’ internal pore structure fell in the ranges of 1.51-1.85 and 0.18-0.99, respectively. Likewise, D and L of the dissolution holes were in the ranges of, respectively, 1.63-1.65 and 0.56-0.62. The obtained results of the present study lay the foundation for developing improved fractal models of the reservoir properties which would help to better understand the fluid flow, irreducible fluid saturation, and capillary pressure. These issues are of significant importance for reservoir quality and calculating the accurate amount of producible oil and gas.

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“…Numerous studies have been contacted to assess the CO 2 storage capacity of China's numerous sedimentary basins (Kyle et al, 2006;Baojun et al, 2010;. Due to the rich Mesozoic-Cenozoic tectonic and stratigraphic history, China has a significant CO 2 storage potential (Li et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Economically, the high cost associated with CO 2 capture, separation, compression, transportation and injection is another key hurdle. Globally, rapid deployment of CO 2 geological sequestration has been a major issue (Li et al, 2015). Some countries such as China have a large CO 2 storage capacity Li et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of CO<sub>2</sub> in Saline Aquifers under Deep Ground Water Systems in Urumqi River Basin of Xinjiang, China

Nyongesah¹

2021

Ecol. Eng. Environ. Technol.

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The future emissions of carbon dioxide (CO 2 ) are likely to increase beyond the current levels due to rapid industrialization in China. Several methods have been proposed as possible mitigation strategies to reduce the anthropogenically emitted CO 2 from the atmosphere and water. This study provided the description of stratigraphic structure of the basin through analysis between the regional groundwater flow and the injection of carbon dioxide. The geological and geomechanical data was used to model the aquifer for geostatistical analysis. Data storage sites for geotechnical provided critical information to assess the potential risks and associated sequestration. The movement of groundwater occurred slowly with infiltration through the pores. CO 2 was stored in deep aquifers for longer periods due to slow movement of water downstream. Over time, the injected CO 2 dissolved water, forming minerals through chemical reactions, which converted it into carbonate minerals resulting in permanent sequestration.The chemistry of formation waters in this basin is important for many geological processes, such as the fluidrock interaction, the migrating paths of fluid and the entrapment mechanisms of hydrocarbon. In this study, the emissions of CO 2 were shifted several kilometers away from the storage area, such that the regional groundwater mixing affected the quality of surface water with consequent of toxicity to every living creature that depended on the available water from Urumqi River Basin. Injection of fluids into deep saline aquifers is therefore considered as the best mitigating strategy for CO 2 abatement in water due to its enormous storage capacity.

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Assessment of the effective CO2 storage capacity in the Beibuwan Basin, offshore of southwestern P. R. China

Cited by 30 publications

References 10 publications

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

The Use of the Surface Roughness Value to Quantify the Extent of Supercritical CO2 Involved Geochemical Reaction at a CO2 Sequestration Site

Fractal Properties of Various Clay Minerals Obtained from SEM Images

Evaluation of CO<sub>2</sub> in Saline Aquifers under Deep Ground Water Systems in Urumqi River Basin of Xinjiang, China

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