Zihao Yang^1,*, Jiarui Cheng¹, Zefeng Li², Yirong Yang¹, Linghong Tang¹, Wenlan Wei¹

FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.9, pp. 2149-2176, 2025, DOI:10.32604/fdmp.2025.067739 - 30 September 2025

Abstract This study presents a two-dimensional, transient model to simulate the flow and thermal behavior of CO₂ within a fracturing wellbore. The model accounts for high-velocity flow within the tubing and radial heat exchange between the wellbore and surrounding formation. It captures the temporal evolution of temperature, pressure, flow velocity, and fluid density, enabling detailed analysis of phase transitions along different tubing sections. The influence of key operational and geological parameters, including wellhead pressure, injection velocity, inlet temperature, and formation temperature gradient, on the wellbore’s thermal and pressure fields is systematically investigated. Results indicate that due to… More >

Jing Li, Bo Ning^*, Bin Li, Dezhi Qiu

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.12, pp. 2927-2939, 2024, DOI:10.32604/fdmp.2024.057388 - 23 December 2024

Abstract Offshore deepwater cementing generally faces more challenges than onshore cementing. Shallow formations in deepwater wells often exhibit low structural strength, high porosity, and are prone to shallow gas influx and hydrate formation. These factors require careful control of hydration heat. In this article, we examine the key factors influencing temperature fluctuations in the wellbore and develop a temperature model that accounts for the thermal effects related to cement slurry circulation and hydration. This model is then applied to a deepwater shallow formation cementing case study. The results show that: (1) When cement slurry is displaced More >

Xingbin Zhao¹, Neng Yang², Hao Liang³, Mingqiang Wei^2,*, Benteng Ma², Dongling Qiu²

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.11, pp. 2523-2540, 2024, DOI:10.32604/fdmp.2024.052766 - 28 October 2024

Abstract The transient flow testing of ultra-deepwater gas wells is greatly impacted by the low temperatures of seawater encountered over extended distances. This leads to a redistribution of temperature within the wellbore, which in turn influences the flow behavior. To accurately predict such a temperature distribution, in this study a comprehensive model of the flowing temperature and pressure fields is developed. This model is based on principles of fluid mechanics, heat transfer, mass conservation, and energy conservation and relies on the Runge-Kutta method for accurate integration in time of the resulting equations. The analysis includes the… More >

Jiangshuai Wang^1,*, Chuchu Cai¹, Pan Fu^2,3, Jun Li^4,5, Hongwei Yang⁴, Song Deng¹

FDMP-Fluid Dynamics & Materials Processing, Vol.20, No.3, pp. 537-546, 2024, DOI:10.32604/fdmp.2023.030430 - 12 January 2024

Abstract Multi-gradient drilling is a new offshore drilling method. The accurate calculation of the related wellbore temperature is of great significance for the prediction of the gas hydrate formation area and the precise control of the wellbore pressure. In this study, a new heat transfer model is proposed by which the variable mass flow is properly taken into account. Using this model, the effects of the main factors influencing the wellbore temperature are analyzed. The results indicate that at the position where the separation injection device is installed, the temperature increase of the fluid in the More >