A new physical modeling for two-phase wellbore storage due to phase redistribution

Gholamzadeh, Younes; Sharifi, Mohammad; Karkevandi-Talkhooncheh, Abdorreza; Moraveji, Mostafa Keshavarz

doi:10.1016/j.petrol.2020.107706

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…The prediction of wellbore temperature and pressure field has always been a major problem of common concern to scientists (Mirabbasi et al 2020), because it is related to the accurate construction of oil production technology (Li et al 2020;Jung et al 2020), the safety of pipe string (Guo et al 2021;Li et al 2021;Wang et al 2019a), the normal use of various downhole tools (Wang Sifan, Zhang Ankang, Hu Dongfeng 2021), the reliability of production process (Wang et al 2019b), and the wax and scale prevention of oil and gas wells affected by temperature and pressure (Wei et al 2017;Dalong et al 2021;Yang et al 2021;Wang 2019). Nowadays, in the daily production process of gas wells, the phase change of natural gas in the wellbore is becoming more and more common (Gholamzadeh et al 2020;). As we all know, in the process of oil well production, the high-temperature formation fluid flows to the wellhead through the tubing under the action of formation pressure.…”

Section: Introductionmentioning

confidence: 99%

Investigation and application of wellbore temperature and pressure field coupling with gas–liquid two-phase flowing

Zheng

Dou

et al. 2021

J Petrol Explor Prod Technol

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With the development of gas well exploitation, the calculation of wellbore with single-phase state affected by single factor cannot meet the actual needs of engineering. We need to consider the simulation calculation of complex wellbore environment under the coupling of multiphase and multiple factors, so as to better serve the petroleum industry. In view of the problem that the commonly used temperature and pressure model can only be used for single-phase state under complex well conditions, and the error is large. Combined with the wellbore heat transfer mechanism and the calculation method of pipe flow pressure drop gradient, this study analyzes the shortcomings of Ramey model and Hassan & Kabir model through transient analysis. Based on the equations of mass conservation, momentum conservation and energy conservation, and considering the interaction between fluid physical parameters and temperature and pressure, the wellbore pressure coupling model of water-bearing gas well is established, and the Newton Raphael iterative method is used for MATLAB programming. On this basis, the relationship between tubing diameter, gas production, gas–water ratio, and wellbore temperature field and pressure field in high water-bearing gas wells is discussed. The results show that the wellbore temperature pressure coupling model of high water-bearing gas well considering the coupling of gas–liquid two-phase flow wellbore temperature pressure field has higher accuracy than Ramey model and Hassan & Kabir model, and the minimum coefficients of variation of each model are 0.022, 0.037 and 0.042, respectively. Therefore, the model in this study is highly consistent with the field measured data. Therefore, the findings of this study are helpful to better calculate the wellbore temperature and pressure parameters under complex well conditions.

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Section: Introductionmentioning

confidence: 99%

Investigation and application of wellbore temperature and pressure field coupling with gas–liquid two-phase flowing

Zheng

Dou

et al. 2021

J Petrol Explor Prod Technol

View full text Add to dashboard Cite

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Wellbore storage removal in pressure transient analysis for gas wells

Khalaf

Soliman

El-Banbi

2022

Journal of Petroleum Science and Engineering

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Study on Downhole Throttling Characteristics of High Water Content Gas

Zheng

Dou

et al. 2022

Geofluids

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In order not to hinder gas production, we usually hope that the bottom hole effusion can be discharged to the surface with high-pressure natural gas. For the production data of high water content gas wells, the problems of insufficient water content and liquid-carrying capacity affecting gas well production should be considered. Based on the wellbore gas-liquid two-phase pipe flow theory and heat transfer theory, the temperature and pressure coupling prediction model of a high water-bearing gas well is established. Combined with the downhole throttling mechanism and gas-liquid two-phase homogeneous flow theory, the temperature and pressure field distribution model is established. The results show that compared with the Ramey model and Hassan and Kabir model, the temperature and pressure coupling prediction model of high water-bearing gas wells established in this study has the smallest coefficient of variation in the four groups of data tests. Based on this, the effects of different working conditions and choke diameter on downhole throttling characteristics of high water-bearing gas wells are analyzed. The findings of this study are helpful to better predict the wellbore temperature and pressure coupling of high water-bearing gas wells and provide more effective help for the smooth production of gas wells.

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A new physical modeling for two-phase wellbore storage due to phase redistribution

Cited by 3 publications

References 22 publications

Investigation and application of wellbore temperature and pressure field coupling with gas–liquid two-phase flowing

Investigation and application of wellbore temperature and pressure field coupling with gas–liquid two-phase flowing

Wellbore storage removal in pressure transient analysis for gas wells

Study on Downhole Throttling Characteristics of High Water Content Gas

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