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为了促进泡沫流体在欠平衡钻井中的应用与发展,利用力学分析方法和多相流理论,在分析常规钻井液双层携岩模型的基础上,根据泡沫流体的可压缩性建立了泡沫流体的状态方程,并将其引入到双层模型中建立了泡沫流体水平环空稳态携岩双层力学模型,得到了模型封闭所需要的方程式。
In order to promote the application and development of foam fluid in underbalanced drilling, based on the analysis of the double-layer rock-carrying model of conventional drilling fluid by using mechanical analysis method and multi-phase flow theory, the foam fluid was established according to the compressibility of foam fluid State equations are introduced and introduced into the bilayer model to establish the biaxial steady-state rock-loading biomechanics model of the foam fluid level. The equations needed to close the model are obtained.