基于构造恢复理论的含复杂断层三维地质建模方法
摘要
In the three-dimensional geological modeling, many works focus on the simulation of the fault itself, ignoring the influence of the fault sequence on the stratum structure.However, it is very necessary and critical to consider the fault sequence and the deformation caused by it.To solve this problem, based on the theory of fault recovery and evolution influence region, in this paper it proposes a fault vector field modeling method for 3D geological modeling with complex fault network.First, the fault vector field displacement operator is used to recover the stratum and fault data within the influence region in the reverse order of fault structure evolution, and then the stratum and fault data affected by the fault are calculated step by step in the positive order of evolution to obtain a 3D geological model with complex fault network.Through modeling experiments and comparative experiments, it is verified that the method has a higher utilization rate of data and the ability to deal with fracture contact, and all displacements caused by fracture will be automatically calculated in the modeling process, which improves the rationality and efficiency of modeling.The model constructed by this method takes full account of the influence of the time sequence of fault structure, and is more able to solve the problem of fault network model construction with complex contact relationship than the general method.