Study on wellbore fluid flow and heat transfer of a multilateral-well CO2 enhanced geothermal system

Shi, Yu; Song, Xianzhi; Wang, Gaosheng; McLennan, John; Forbes, Bryan; Li, Xiaojiang; Li, Jiacheng

doi:10.1016/j.apenergy.2019.04.117

Cited by 90 publications

(20 citation statements)

References 39 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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“…(4) local thermal balance is employed for the heat transfer process in the matrix and fractures (Cao et al, 2016;Shi et al, 2019c);…”

Section: Model Assumptionsmentioning

confidence: 99%

Multi‐objective Optimization of Geothermal Extraction from the Enhanced Geothermal System in Qiabuqia Geothermal Field, Gonghe Basin

Song

et al. 2021

Acta Geologica Sinica (Eng)

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A geothermal demonstration exploitation area will be established in the Enhanced Geothermal System of the Qiabuqia field, Gonghe Basin, Qinghai–Xizang Plateau in China. Selection of operational parameters for geothermal field extraction is thus of great significance to realize the best production performance. A novel integrated method of finite element and multi‐objective optimization has been employed to obtain the optimal scheme for thermal extraction from the Gonghe Basin. A thermal‐hydraulic‐mechanical coupling model (THM) is established to analyze the thermal performance. From this it has been found that there exists a contraction among different heat extraction indexes. Parametric study indicates that injection mass rate (Qin) is the most sensitive parameter to the heat extraction, followed by well spacing (WS) and injection temperature (Tin). The least sensitive parameter is production pressure (pout). The optimal combination of operational parameters acquired is such that (Tin, pout, Qin, WS) equals (72.72°C, 30.56 MPa, 18.32 kg/s, 327.82 m). Results indicate that the maximum electrical power is 1.41 MW for the optimal case over 20 years. The thermal break has been relieved and the pressure difference reduced by 8 MPa compared with the base case. The optimal case would extract 50% more energy than that of a previous case and the outcome will provide a remarkable reference for the construction of Gonghe project.

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“…The obtained results suggested the number of branches be limited to two or three, taking into account the design parameters, especially the branch angle. Shi et al [13] evaluated the possibility of increasing the heat extraction from CO 2 enhanced geothermal systems (CO 2 -EGS) by the application a multilateral well system. The authors used a coupled wellbore-reservoir model with fluid flow and heat transfer.…”

Section: Multilateral Wells As An Asset In Reservoir Managementmentioning

confidence: 99%

End-Point Model for Optimization of Multilateral Well Placement in Hydrocarbon Field Developments

et al. 2020

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Drilling cost is one of the most critical aspects in the reservoir management plan. Costs may exceed a million dollars; thus, optimal designing of the well trajectory in the reservoir and completion are essential. The implementation of a multilateral well (MLW) in reservoir management has great potential to optimize oil production. The object of this study is to develop an integrated workflow of end-point multilateral well placement optimization integrated with the reservoir simulator supported by artificial intelligence (AI) methods. The paper covers various types of MLW construction, including: horizontal, bi-, tri-, and quad-lateral wells. For quad-lateral wells, the capital expenditure is highest; nevertheless, acceleration of oil production affects the project’s NPV (net present value), indicating the type of well that is most promising to implement in the reservoir. Tri- and quad-lateral wells can operate for 12.1 and 9.8 years with a constant production rate. The decreasing hydrocarbon production rate is affected by reservoir pressure and the reservoir water production rate. Other well design patterns can accelerate water production. The well’s optimal trajectory was evaluated by the genetic algorithm (GA) and particle swarm optimization (PSO). The major difference between the GA and PSO optimization runs is visible with respect to water production and is related to the modification of one well branch trajectory in a reservoir. The proposed methodology has the advantage of easy implementation in a closed-loop optimization system coupled with numerical reservoir simulation. The paper covers the solution background, an implementation example, and the model limitations.

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Study on wellbore fluid flow and heat transfer of a multilateral-well CO2 enhanced geothermal system

Cited by 90 publications

References 39 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

Multi‐objective Optimization of Geothermal Extraction from the Enhanced Geothermal System in Qiabuqia Geothermal Field, Gonghe Basin

End-Point Model for Optimization of Multilateral Well Placement in Hydrocarbon Field Developments

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