Pore-scale numerical simulation of supercritical CO2 migration in porous and fractured media saturated with water

Liu, Hejuan; Zhu, Zhengwen; Were, Patrick; Liu, Jianfeng; Lei, Hongwu; Zhang, Liwei

doi:10.46690/ager.2020.04.07

Cited by 53 publications

(14 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…73 Hence, a geochemical reaction of geologically stored CO 2 with caprock mineralogical components can either aid or inhibit long-term CO 2 storage. 69 Since wettability and interfacial tension greatly influence the column height of a seal, 9 and the CO 2 migration path, 74 this geochemical interaction can be illustrated with CO 2 column heights. The principle behind their usage also being that if a capillary pressure within a seal efficiently supports a hydrocarbon column, it should be able to support a CO 2 column at similar temperature and pressure, resulting in a very slow rate of upward migration through the seal.…”

Section: Discussionmentioning

confidence: 99%

Pore Structure and Seal Capacity of Ilaro Formation Shales in the Eastern Dahomey Basin: Implications from Mercury Injection Capillary Pressure and Spontaneous Imbibition Analyses

Ukaomah

Zhang

et al. 2021

Energy Fuels

View full text Add to dashboard Cite

A petrophysical evaluation of caprock pore characteristics and seal capacity is critical for geologic storage of CO 2 . In this study, integration of X-ray diffraction, mercury injection capillary pressure (MICP), and spontaneous imbibition analyses is used to evaluate the pore characteristics and seal capacity of shale samples from the Ilaro formation, which could serve as a seal for CO 2 injected into the reservoir units of the eastern Dahomey basin. X-ray diffraction reveals the samples as clay-rich and early diagenetic, while spontaneous imbibition reveals pore connectivity heterogeneity. MICP analysis shows the samples as being characterized by a low breakthrough pressure and reveals the mesopore dominance with majority of pore volumes dominated by 5 to 10 nmsized pore throats. Furthermore, high CO 2 column heights are obtained from conversion of MICP data (at 20% saturation) for mesopore-dominated samples containing ankerite and kaolinite. The study reveals that should injected CO 2 migrate upward from the reservoir units of the onshore eastern Dahomey basin, portions of the Ilaro formation may function as a good seal due to the mesopore mineralogical composition influence on the CO 2 −brine−rock interaction. This result should therefore serve as an important insight for future caprock sealing studies conducted on the onshore eastern Dahomey basin.

show abstract

Section: Discussionmentioning

confidence: 99%

Pore Structure and Seal Capacity of Ilaro Formation Shales in the Eastern Dahomey Basin: Implications from Mercury Injection Capillary Pressure and Spontaneous Imbibition Analyses

Ukaomah

Zhang

et al. 2021

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…In 2010, the first full chain (from CO 2 capture of the coal chemical industry to CO 2 sequestration in the saline formations) CCS project with the target of 0.1 Mtons of CO 2 injection was settled in the Ordos Basin in China, and the total CO 2 storage amount was about 0.3 Mtons (Wang et al 2018). However, the researches in the fields of CO 2 -EGR, CO 2 enhanced shale gas recovery (CO 2 -ESG), etc., are at the very preliminary stage (Liu et al 2020). Until the end of 2017, about 26 projects of CCS or CCUS had been carried out in China, including 14 CO 2 -EOR projects in oilfields of Daqing, Jilin, Shengli, Zhongyuan, Yanchang, etc.…”

Section: Application Status Of Ccs/ccus Technologies In Chinamentioning

confidence: 99%

The sustainability assessment of CO2 capture, utilization and storage (CCUS) and the conversion of cropland to forestland program (CCFP) in the Water–Energy–Food (WEF) framework towards China’s carbon neutrality by 2060

et al. 2021

Self Cite

View full text Add to dashboard Cite

The global warming induced by the emission of greenhouse gases, especially the carbon dioxide, has become the global climate and environmental issues. China has been working in the CO2 emission reduction and carbon sinks with the purpose of becoming the carbon-neutral country by 2060. The CO2 capture, utilization and storage (CCUS) technologies and the reforestation technology represented by the Conversion of Cropland to Forestland Program (CCFP) have great potential for sinking CO2 emission. However, the trade-off among CCFP, CCS/CCUS and Water-Energy-Food (WEF) nexus are not well evaluated. In this paper, the remote-sensing data are collected and used to evaluate the sustainability of CCFP by analyzing the variation of land use and land cover (LULC), crop production, etc. The results show that 13.29% of the cropland in 2001 vanished and converted to grassland (8.3%), mosaic cropland (3%) and urban land (0.98%) in 2019, demonstrating that the CCFP is successful in both WEF nexus and carbon sink. The total crop production has increased around 50% between 2001 and 2019, implying that the CCFP will not lead to the food risk during the conversion of croplands into other types of land in China. A sustainable implementation of CCFP and other environmental Payments for Ecosystem Services (PES) policies in 2019–2060 could reach an estimated total growth of 7.462 billion m3 in comparison of that in 2018 and the total plantation forest stock of about 10.852 billion m3 in 2060, with a corresponding minimum CO2 sink of 2.90 billion tons in 2060. The estimated peak of net equivalent CO2 emissions before 2030 is about 11.0 billion tons and could not be reduced to zero by 2060 without the large-scale application of the CCS/CCUS technologies as geological sequestration of CO2. Besides, the application of CCS/CCUS can be beneficial for WEF, e.g., through replacing the water by CO2 during energy production, especially in the shale gas production in the regions with high water risks in China. In one word, CCS/CCUS and CCFP are two decided pathways of carbon sequestration and should be systematically applied to achieve China’s carbon neutrality by 2060.

show abstract

“…As a result, some enhanced recovery (EOR) techniques, such as water injection, gas injection huff, and puff, are also adopted for production [42]. However, the works reported in a relevant reference are obviously not applicable for they only take consideration of single-phase homogeneous model.…”

Section: Model Validationmentioning

confidence: 99%

Three-Dimensional Numerical Simulation of Multiscale Fractures and Multiphase Flow in Heterogeneous Unconventional Reservoirs with Coupled Fractal Characteristics

Hong

Cao

et al. 2021

Geofluids

View full text Add to dashboard Cite

A simulated reservoir model, based on the permeability fractal model and three-dimensional (3D) Gaussian filter, was established to account for in-layer and interlayer heterogeneity so that the result conforms to the law of geological statistics. Combined with an embedded discrete fracture method (EDFM), a multiscale fracture system was established, forming the numerical simulation method of multiphase flow in horizontal wells in heterogeneous reservoirs with complex fractures. The heterogeneity and saturation of the reservoir mixed five-point pattern of vertical and horizontal wells and the injection and production of horizontal wells were discussed. The results show that it is difficult to characterize complex reservoirs using a homogeneous permeability model. Thus, it is best to use a heterogeneous model that considers permeability differences in tight reservoirs. Formation fluids coexist in multiple phases, and water saturation has a direct effect on the production. Thus, a multiphase flow model is needed and can play a greater role in injection and production technology. The mixed five-point pattern of vertical and horizontal wells can improve productivity to a certain extent, but the dual effects of heterogeneity and fracturing will cause a decline in production by accelerating the communication of injected fluid. The reservoir is heterogeneous between wells, and there are differing effects on adjacent wells. Therefore, near-well natural microfractures are opened because of fracturing in horizontal wells, and the heterogeneity cannot be ignored, especially when multiple wells are simultaneously injected and produced.

show abstract

Pore-scale numerical simulation of supercritical CO2 migration in porous and fractured media saturated with water

Cited by 53 publications

References 47 publications

Pore Structure and Seal Capacity of Ilaro Formation Shales in the Eastern Dahomey Basin: Implications from Mercury Injection Capillary Pressure and Spontaneous Imbibition Analyses

Pore Structure and Seal Capacity of Ilaro Formation Shales in the Eastern Dahomey Basin: Implications from Mercury Injection Capillary Pressure and Spontaneous Imbibition Analyses

The sustainability assessment of CO2 capture, utilization and storage (CCUS) and the conversion of cropland to forestland program (CCFP) in the Water–Energy–Food (WEF) framework towards China’s carbon neutrality by 2060

Three-Dimensional Numerical Simulation of Multiscale Fractures and Multiphase Flow in Heterogeneous Unconventional Reservoirs with Coupled Fractal Characteristics

Contact Info

Product

Resources

About