Numerical study of steam condensation inside a long, inclined, smooth tube at different saturation temperatures

Abadi, S.M.A. Noori Rahim; Mehrabi, Mehdi; Meyer, Josua P.

doi:10.1016/j.ijheatmasstransfer.2018.05.136

Cited by 16 publications

(4 citation statements)

References 38 publications

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“…The partial pressure effect of non-condensable gases can lower the temperature of saturated steam (Figure 18) [28]. That is, after injecting nitrogen into the reservoir, even in areas with lower temperatures, high-quality steam can be formed.…”

Section: Analysis Of Experimental Resultsmentioning

confidence: 99%

Study on Characteristics of Steam Chamber and Factors Influencing Nitrogen-Assisted Vertical–Horizontal Steam Drainage Development

Zheng,

Yu,

Huang

et al. 2024

Processes

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With the notable achievements attained through the implementation of steam-assisted gravity drainage (SAGD), the vertical–horizontal steam drive (VHSD) emerges as a pivotal technological advancement aimed at significantly enhancing the efficiency of thin reservoir heavy oil recovery subsequent to steam cyclic stimulation. The inclusion of nitrogen assistance has proven effective in enhancing the efficacy of gravity drainage techniques in reservoir development. However, it is noteworthy that this method has only led to improvements in approximately 50% of the well groups within the observed field. The comprehensive evaluation index of VHSD was proposed, and as the objective function, it was determined that the greatest contribution to the VHSD technique lies in oil saturation, accounting for 40% of the overall evaluations. This differs from conventional SAGD operations, where reservoir thickness serves as the primary determinant. Building upon an enhanced physical simulation similarity criterion, two comparative injection scheme experiments were conducted to explore the impact of nitrogen injection on the performance of VHSD and the characteristics of the steam chamber. Nitrogen is distributed in the vicinity of the steam chamber, leading to the formation of a dual mechanism characterized by ‘top heat insulation and lateral traction’ on the steam chamber. The lateral traction accounts for approximately 25% of the team chamber volume. Additionally, the inducement of nitrogen causes a downward displacement of crude oil, resulting in its accumulation within the high-temperature region of the steam chamber. This, in turn, enhances the contact area between the high-temperature steam and the crude oil, ultimately leading to improvement in production efficiency. Further validation of the impact of nitrogen on steam lateral traction and interlayer steam drainage within the reservoir was confirmed using Xinjiang oilfield testing. The well temperature increased from 75 °C to 130 °C.

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Section: Analysis Of Experimental Resultsmentioning

confidence: 99%

Study on Characteristics of Steam Chamber and Factors Influencing Nitrogen-Assisted Vertical–Horizontal Steam Drainage Development

Zheng,

Yu,

Huang

et al. 2024

Processes

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“…By using this method, a sharp and clear interface between the liquid and vapour phases could be captured. The suitability of the VOF method for these types of flow regimes had already been proved [24][25][26]35].…”

Section: Mathematical Formulationmentioning

confidence: 99%

Numerical study of steam condensation inside a long inclined flattened channel

Abadi

Davies

Hrnjak

et al. 2019

International Journal of Heat and Mass Transfer

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“…Furthermore, it may be time consuming and challenging. On the other hand, computational fluid dynamics work [23,24] is also in the development phase and no study has yet coupled the effect of temperature difference and inclination on heat transfer at low mass fluxes.…”

Section: Introductionmentioning

confidence: 99%

Modeling Of Heat Transfer Coefficients During Condensation At Low Mass Fluxes Inside Horizontal And Inclined Smooth Tubes

Ewim

Mehrabi

Meyer

2020

Heat Transfer Engineering

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In this study, in-tube condensation was conducted for mass fluxes of 100, 75 and 50 kg/m 2 s, and temperature differences of 1, 3, 5, 8 and 10 C. Measurements and flow regimes were captured at various mean vapor qualities between 0.1 and 0.9 inside an inclined smooth tube with an inside diameter of 8.38 mm and 1.49 m long. Fifteen distinct inclination angles from -90 to 90 were considered while the condensation temperature was always maintained at 40 C. The experimental results showed that the inclination angle significantly influenced the flow patterns and the heat transfer coefficients. It was also shown that the heat transfer coefficient was dependent on the temperature difference, even though this dependency was greater for downward flows than for upward flows. By using the experimental data and fuzzy C-means clustering adaptive neuro-fuzzy inference system (FCM-ANFIS) technique, a model was proposed for the prediction of heat transfer coefficients during condensation of low mass fluxes inside inclined smooth tubes. By using three statistical criteria, the performance of the proposed model was examined against experimental data and it was found that FCM-ANFIS was a strong tool for the prediction of the heat transfer coefficient based on the effective parameters of vapor quality, temperature difference and inclination angle.

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Numerical study of steam condensation inside a long, inclined, smooth tube at different saturation temperatures

Cited by 16 publications

References 38 publications

Study on Characteristics of Steam Chamber and Factors Influencing Nitrogen-Assisted Vertical–Horizontal Steam Drainage Development

Study on Characteristics of Steam Chamber and Factors Influencing Nitrogen-Assisted Vertical–Horizontal Steam Drainage Development

Numerical study of steam condensation inside a long inclined flattened channel

Modeling Of Heat Transfer Coefficients During Condensation At Low Mass Fluxes Inside Horizontal And Inclined Smooth Tubes

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