酸压模拟的三维模型及计算

3—D models and its computation of acid fracture simulation

针对地层的实际情况，考虑产层、盖层、底层的岩石力学参数，如泊松比、弹性模量、断裂韧性和地应力互不相同时，建立了包括三维裂缝延伸模型和酸液运移分布模型的酸压模拟三维模型，并编制了酸压设计软件。该软件全面考虑了温度场、同离子效应、反应活化能变化等影响，能模拟碳酸盐岩油气层各种应力分布和酸压裂缝延伸及酸液运移情况。

In accordance with the practical condition of pay zone,three-dimensional acid fracturing simulating models,which includes three-dimensional fracture propagating models,acid transporting & distributing model and other related models,are established.The models can be used in simulating acid fracturing treatment in carbonate formation with distinguished rock mechanical parameters such as poisson’s ratio,elastic module,fracture toughness and in-situ stress in barrier zones and pay zone.An acid fracturing design software based on those models is obtained.The software has entirely taken the factors into consideration such as temperature field,common ion effect,and so on,and it can be applied in simulating fracture propagation and acid transporting & distribution in the acid fracturing treatment in carbonate formation with all kinds of stress distribution.