Wellbore-formation transient temperature distribution considering heat transfer by fluid seepage while drilling in horizontal well

作者：Zhang Guangfu, Ming Tang, Shiming He, Linghao Kong, Genghua Yao, Xinyu Guo, Haojie Lei, Yuan Deng, Xianghua deng · 发表于：Geoenergy Science and Engineering · 年份：2025 · DOI：10.1016/j.geoen.2025.213886 · 被引用次数：4 · 研究领域：Drilling and Well Engineering、Hydraulic Fracturing and Reservoir Analysis、Reservoir Engineering and Simulation Methods

Currently, most wellbore-formation temperature field study only considers radial heat conduction in the formation, while neglecting temperature transfer caused by fluid seepage within the formation. Therefore, this paper investigates the impact of seepage between the wellbore and formation on heat transfer and develops a temperature prediction model suitable for horizontal wells. Secondly, detailed explanations are provided regarding the calculation methods for mechanical heat source term , hydraulic heat source term , drilling fluid rheological parameters, thermal physical parameters, and heat transfer coefficient in the model. Finally, the finite difference method is employed to solve the temperature model, and an analysis is conducted on the impact of mud density, formation permeability , seepage and drilling time on the annulus-formation temperature. The main conclusions are as follows: due to a large amount of mechanical friction, the temperature of the inclined section may exceed that of the initial position of the horizontal section. In the case of underbalanced drilling in high permeability formations, the consideration of seepage's influence on annulus temperature is paramount. Neglecting seepage results in a maximum error of 55.4 % in annulus temperature. The wellbore-formation temperature is positively correlated with formation permeability during overbalanced drilling, but negatively correlated during underbalanced drilling . The higher the drilling fluid density ...