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介绍了射孔完井中二维和三维有限元热流模型的建立及网格划分的基本方法 ,用热流场模拟射孔完井渗流场 ,用同一种导热率材料来模拟井筒和孔眼 ,该材料导热率相对于地层模型导热率为无限大时 ,能模拟整个射孔完井渗流场。该二维和三维模型 ,能研究射孔深度、有无钻井污染和压实带情况下 ,孔眼内流体流速、压实带外边界渗流速度、渗流压力场、全井产量及产能比。并用APDL程序语言编写了二维和三维模型及网格划分的通用程序 ,为射孔完井优化设计及产能预测提供了实用的有限元网格模型 ,同时也为这方面的研究提供了简捷的方法
The establishment of two-dimensional and three-dimensional finite element heat flow models in percolation and completion and the basic method of meshing are introduced. The percolation field of perforation completion is modeled by the heat flow field and the wellbore and perforations are simulated by the same thermal conductivity material. Thermal conductivity relative to the thermal conductivity of the formation model is infinite, to simulate the entire percolation completion well seepage field. This two-dimensional and three-dimensional model can be used to study perforation depths, drilling fluid contamination and compaction zones, fluid velocity in perforations, seepage velocity at the outer boundary of the compaction zone, seepage pressure field, total well production and capacity ratio. The APDL programming language is used to write the 2D and 3D models and the general program of meshing. It provides a practical finite element mesh model for perforation completion optimization design and capacity prediction, and also provides a simple and convenient method for this research method