Performance analysis of superheated steam injection for heavy oil recovery and modeling of wellbore heat efficiency

Sun, Fengrui; Yao, Yuedong; Chen, M.; Li, Xiangfang; Zhao, Lin; Meng, Ye; Sun, Zheng; Zhang, Tao; Feng, Dong

doi:10.1016/j.energy.2017.02.114

Cited by 228 publications

(46 citation statements)

References 36 publications

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“…In addition, the oil production rates and oil recovery were reported to be significantly higher than the oil production rates and oil recovery that are expected from solution gas drive theory 5–7 . The most plausible explanation of the unusual production behavior is “foamy-oil” flow 8–12 , which is a different form of two-phase flow, in which the released gas flows in the form of dispersed bubbles instead of flowing as a continuous phase.…”

Section: Introductionmentioning

confidence: 81%

Experimental study and new three-dimensional kinetic modeling of foamy solution-gas drive processes

Sun

Zhang

Wang

et al. 2018

Sci Rep

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Foamy solution-gas drive processes in heavy oil reservoirs are very complex. The influence of some microscopic factors on this process is not fully understood due to limitations of traditional depletion tests. This study aims to investigate foamy solution-gas drive by experiments and simulations. First, the effects of the pressure depletion rate on critical gas saturation and foamy solution-gas drive processes were investigated by laboratory experiments. Second, a new three-dimensional foamy oil model that captures many important characteristics of foamy solution-gas drive, such as non-equilibrium behavior, gas evolution kinetics, and the effect of viscous forces on gas mobility, was developed. Last, the effects of some important parameters on foamy solution-gas drive were systematically investigated,and a model application was conducted in a typical foamy oil reservoir. The results indicate that the new model is capble of simulating many of the unusual behaviors observed in foamy solution-gas drive on a laboratory and field scales. High oil recoveries were obtained with a high oil viscosity, high depletion rate, long sandpack, and low solution gas-oil ratio. Foamy solution-gas drive processes are sensitive to the depletion rate, length, and critical gas saturation. The oil viscosity, solution GOR and diffusion coefficient are not sensitive factors.

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Section: Introductionmentioning

confidence: 81%

Experimental study and new three-dimensional kinetic modeling of foamy solution-gas drive processes

Sun

Zhang

Wang

et al. 2018

Sci Rep

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“…On the contrary, this part of the energy that was lost. The real energy conservation equation in the wellbore should be expressed as:

\frac{d Q}{d z} = - w \frac{d h}{d z} - w \frac{d}{d z} (\frac{v^{2}}{2}) + w g cos θ

…”

Section: Model Applicationmentioning

confidence: 99%

“…proposed a series of models for estimating SHS pressure and the degree of superheating in conventional single‐tubing wells. In 2017, Sun et al . improved the energy balance equation and reinterpreted the relationship between injection rate and temperature profiles in wellbores.…”

Section: Introductionmentioning

confidence: 99%

“…From 2010 to 2016, Zhou et al, 64 Xu et al, 65 Gu et al, 66 and Fan et al 67 proposed a series of models for estimating SHS pressure and the degree of superheating in conventional single-tubing wells. In 2017, Sun et al [68][69][70] improved the energy balance equation and reinterpreted the relationship between injection rate and temperature profiles in wellbores. However, these models were focused on the single-phase SHS flow in wellbores.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Exploitation of heavy oil by supercritical CO₂: Effect analysis of supercritical CO₂ on H₂O at superheated state in integral joint tubing and annuli

Sun

Yao

et al. 2018

Greenhouse Gases

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The injection of supercritical CO2 coupled with superheated steam (SHS) for heavy oil recovery can improve development efficiency. In order to help oil fields to improve the efficiency of CO2 and SHS utilization we must predict the thermophysical properties at well bottom. Based on the mass, energy, and momentum conservation equations, a non‐isothermal pipe‐flow model is established considering heat exchange between the integral joint tubing (IJT) and annuli. Coupled with the transient thermal conduction model in stratum and the S‐R‐K real gas model, a comprehensive model is established for the mixture flow in concentric dual‐tubing wells (CDTW). The model is solved by a numerical method and an iteration technique. The results show that: (a) the accuracy of the temperature profile calculation has been greatly improved compared with the previous model; (b) the heat‐carrying capacity per unit mass of the mixture and heating efficiency decrease with increasing supercritical CO2 content; (c) when a temperature difference exists between the IJT and annuli, a rapid flow of thermal energy exists inside the CDTW, which causes a significant temperature change near the wellbore, but the influence of temperature change on pressure profiles is negligible. © 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.

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“…There are so many studies related to heat-and mass-transfer process in the literature. [1][2][3][4][5][6] The water is converted to the steam, and then it is used as a working fluid due to higher enthalpy characteristic. So many works have been carried out on the steam turbine systems.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of a mercury-steam combined-energy-generation system (MES)

Gonca

Şahi̇n

2019

Int J Energy Res

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Summary In this study, exergy and thermo‐ecology–based performance analyses of a mercury‐steam combined–energy‐generation system are comprehensively presented. Performance characteristics such as net‐power output, net‐power density, exergy efficiency, exergy destruction, and ecological coefficient of performance have been obtained by developing a novel numerical model. The impacts of the pressures of open feed water heater and steam turbines, temperatures of mercury boiler, and mercury turbines on the performance characteristics have been investigated. The results indicated that the performance characteristics of the system have been remarkably affected by the pressure and temperature variations of the system components.

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Performance analysis of superheated steam injection for heavy oil recovery and modeling of wellbore heat efficiency

Cited by 228 publications

References 36 publications

Experimental study and new three-dimensional kinetic modeling of foamy solution-gas drive processes

Experimental study and new three-dimensional kinetic modeling of foamy solution-gas drive processes

Exploitation of heavy oil by supercritical CO₂: Effect analysis of supercritical CO₂ on H₂O at superheated state in integral joint tubing and annuli

Performance evaluation of a mercury-steam combined-energy-generation system (MES)

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Performance analysis of superheated steam injection for heavy oil recovery and modeling of wellbore heat efficiency

Cited by 228 publications

References 36 publications

Experimental study and new three-dimensional kinetic modeling of foamy solution-gas drive processes

Experimental study and new three-dimensional kinetic modeling of foamy solution-gas drive processes

Exploitation of heavy oil by supercritical CO2: Effect analysis of supercritical CO2 on H2O at superheated state in integral joint tubing and annuli

Performance evaluation of a mercury-steam combined-energy-generation system (MES)

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Exploitation of heavy oil by supercritical CO₂: Effect analysis of supercritical CO₂ on H₂O at superheated state in integral joint tubing and annuli