Numerical simulation of CO2 circulating in a retrofitted geothermal well

Hui, Yu; Li, Qi; Sun, Fengrui

doi:10.1016/j.petrol.2018.09.057

Cited by 33 publications

(5 citation statements)

References 98 publications

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“…These were followed by finite volume methods (FVM) with 18.4%, while the remaining 21.1% of the studies did not report the methods used. CCLGS --Bu et al [30] CCLGS FVM -Focaccia and Tinti [31] CCLGS --Yekoladio et al [32] CCLGS --Templeton et al [33] CCLGS FEM FlexPDE Wight and Bennett [34] CCLGS --Le Lous et al [35] CCLGS FEM FFEFLOW Noorollahi et al [36] CCLGS FVM Ansys Alimonti and Soldo [37] CCLGS --Mokhtari et al [38] CCLGS --Caulk and Tomak [39] CCLGS FEM Comsol Sun et al [40] CCLGS-H FDM -Song et al [25] CCLGS FDM -Shi et al [41] CCLGS FEM Comsol Renaud et al [42] CCLGS FVM Ansys Ghoreishi-Madiseh et al [43] CCLGS FVM Ansys Zhang et al [44] CCLGS FEM Comsol Sun et al [45] CCLGS-H FDM -Wang et al [46] CCLGS-H FDM -Yu et al [47] CCLGS FDM -Yildirim et al [48] CCLGS FEM Comsol Dai et al [49] CCLGS FVM -Hu et al [50] CCLGS FEM Comsol Wang et al [51] CCLGS-H FEM Comsol Hu et al [52] CCLGS FVM T2Well Kalmár et al [53] CCLGS FDM -He et al [54] CCLGS _ -Wang et al [26] CCLGS-H FEM Comsol Wang et al [55] CCLGS-H FEM Comsol Pokhrel et al [56] CCLGS FVM Ansys Sun et al [57] UCLGS FDM -Sun et al [58] UCLGS FDM -Yuan et al [59] UCLGS FDM -Ghavidel et al [60] UCLGS FEM Comsol Fallah et al [61] UCLGS FDM -Zhang et al [62] UCLGS FDM -Note: CCLGS-H-Horizontal CCLGS.…”

Section: Clgss Modelsmentioning

confidence: 99%

A Systematic Review of the Design and Heat Transfer Performance of Enhanced Closed-Loop Geothermal Systems

et al. 2022

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Geothermal energy is one of the primary sources of clean electricity generation as the world transitions away from fossil fuels. In comparison to enhanced geothermal methods based on artificial fracturing, closed-loop geothermal systems (CLGSs) avoid seismicity-induced risk, are independent of reservoir permeability, and do not require the direct interaction between the fluid and the geothermal reservoir. In recent years, the development of CLGS technologies that offer high energy efficiencies has been explored. Research on coaxial closed-loop geothermal systems (CCLGS) and U-shaped closed-loop geothermal system (UCLGS) systems were reviewed in this paper. These studies were categorized based on their design, modeling methods, and heat transfer performance. It was found that UCLGSs had superior heat transfer performances compared to CCLGS. In addition, UCLGSs that utilized CO2 as a working fluid were found to be promising technologies that could help in addressing the future challenges associated with zero-emission compliance and green energy demand. Further research to improve the heat transfer performance of CLGS, especially with regards to improvements in wellbore layout, equipment sizing, and its integration with CO2 capture technologies is critical to ensuring the feasibility of this technology in the future.

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Section: Clgss Modelsmentioning

confidence: 99%

A Systematic Review of the Design and Heat Transfer Performance of Enhanced Closed-Loop Geothermal Systems

et al. 2022

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“…The authors have conducted a series of studies on thermal recovery of heavy oil, geothermal energy recovery and shale oil and gas development (Sun et al 2017a b, c, d, e, f, g;Sun et al 2018d, e, f, g, h, i j, k, l, m, n, o, p, q), and the further readings of these articles are listed below and recommended (Sun et al 2017h, 2018r, s, t, u, v, w, x, y, z, aa, ab, 2019aYu et al 2019).…”

Section: Insights and Perspectivesmentioning

confidence: 99%

Slight insights and perspectives of future heavy oil recovery

Sun

Yao

2019

J Petrol Explor Prod Technol

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In this paper, we put forward critical future prospects based on the paper that was published on International Journal of Heat and Mass Transfer. At present, engineers are familiar with the advantages and disadvantages of different working fluids in thermal recovery of heavy oil. For all the oil displacement mechanism, they can be summarized into only three aspects: (a) physical heat conduction, (b) chemical reactions, and (c) the differences in hydrodynamic properties between fluids. This is already well known in the existing body of knowledge. However, how much will each of these three mechanisms contribute to the total oil recovery efficiency is quite interesting and important to the industry. Based on the commented paper and some related references, we pointed out the future research directions in this area.

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“…As an example, in the case of a 3.2 km deep well, the working fluid of 93 • C at the bottom of the well will have a temperature of 33 • C when the fluid will reach the well head, which corresponds to a 64.5% temperature decrease. In contrast, if an insulated cementitious material with low thermal conductivity of 0.45 W/mK is deployed between metal casing and the formation in this well, the data obtained from the modeling work of insulated geothermal well structure reveal that the heat loss rate to the rock formation is only 16.1% [7]. Importantly, the insulating well cement sheath must have low thermal conductivity under water-saturated conditions of an underground well and not under dry conditions.…”

Section: Introductionmentioning

confidence: 96%

Hydrophobic Lightweight Cement with Thermal Shock Resistance and Thermal Insulating Properties for Energy-Storage Geothermal Well Systems

Sugama¹,

Pyatina²

2021

Materials

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This study assessed the possibility of using polymethylhydrosiloxane (PMHS)-treated fly ash cenospheres (FCS) for formulating a thermally insulating and thermal shock (TS)-resistant cementitious blend with calcium aluminate cement. To prevent FCS degradation in an alkaline cement environment at high temperatures, the cenospheres were pre-treated with sodium metasilicate to form silanol and aluminol groups on their surface. These groups participated in a dehydrogenation reaction with the functional ≡Si–H groups within PMHS with the formation of siloxane oxygen-linked M-FCS (M: Al or Si). At high hydrothermal temperatures of 175 and 250 °C, some Si–O–Si and SiCH3 bonds ruptured, causing depolymerization of the polymer at the FCS surface and hydroxylation of the raptured sites with the formation of silanol groups. Repolymerization through self-condensation between the silanol groups followed, resulting in the transformation of siloxane to low crosslinked silicon-like polymer as a repolymerization-induced product (RIP) without carbon. The RIP provided adequate protection of FCS from pozzolanic reactions (PR), which was confirmed by the decline in zeolites as the products of PR of FCS. Cements with PMHS-treated FCS withstood both hydrothermal and thermal temperature of 250 °C in TS tests, and they also showed improved compressive strength, toughness, and water repellency as well as decreased thermal conductivity. The lubricating properties of PMHS increased the fluidity of lightweight slurries.

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Numerical simulation of CO2 circulating in a retrofitted geothermal well

Cited by 33 publications

References 98 publications

A Systematic Review of the Design and Heat Transfer Performance of Enhanced Closed-Loop Geothermal Systems

A Systematic Review of the Design and Heat Transfer Performance of Enhanced Closed-Loop Geothermal Systems

Slight insights and perspectives of future heavy oil recovery

Hydrophobic Lightweight Cement with Thermal Shock Resistance and Thermal Insulating Properties for Energy-Storage Geothermal Well Systems

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