Abstract: 3D finite element model for thermal fluids of perforated completion and open hole completion is developed by using thermal fluid field for simulating percolation field in perforated completion. The material with same thermal conductivity is adopted to make well-bore and perforated hole simulation. When the thermal conductivity of material is infinite to that of formation model, the simulation of whole percolation fields of perforated completion can be performed. Based on the models, this paper also studies the flowing velocity within perforated hole, boundary flowing velocity beyond compacted zone, flowing pressure field, full hole producing rate and productivity ratio under some perforated depth, with or without driling fluid pollution and compacted zone. The novel method could be helpful to opti-mized design of perforated completion and prediction of productivity. Also, it is of more practical significance for evaluation of perforated completion.

Key words: permeability, perforated completion, percolation, model