@article{WANG2026, 
author = {Zhoujie WANG and Songyan LI and Jianchao CAI},
title = {Flow characteristics and stability analysis of oil-based foam in pore-throat structures},
year = {2026},
journal = {Petroleum Science Bulletin},
volume = {11},
number = {1},
pages = {302-312},
keywords = {stability, flow mechanism, injection pressure, oil-based foam, pore-throat diameter},
url = {https://www.sciopen.com/article/10.3969/j.issn.2096-1693.2026.03.007},
doi = {10.3969/j.issn.2096-1693.2026.03.007},
abstract = {Oil-based foams hold significant potential for enhancing oil recovery and regulating subsurface fluid flow, yet their stability under high-temperature reservoir conditions and their transport mechanisms within pore-throat structures remain insufficiently understood. To address this gap, this study systematically investigates the behaviour of an oil-based foam system through temperature-dependent stability experiments, complemented by pore-scale numerical simulations that characterize bubble deformation and breakthrough within porous media. Experimental results show that increasing temperature accelerates liquid drainage and gas diffusion within the foam films, leading to a reduction in the number of bubbles, enlargement of average bubble size, and a pronounced decline in overall foam stability. Simulation results further demonstrate that pore-throat diameter and injection pressure jointly govern bubble morphology evolution and breakthrough behaviour, with the competition between capillary forces and external driving pressure emerging as the key mechanism influencing oil-based foam mobility. By integrating these findings, this work establishes a unified mechanical framework linking temperature effects and pore-throat confinement, thereby providing theoretical support for the application and optimization of oil-based foams in high-temperature reservoirs.}
}