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裂缝预测方法大多基于现今的构造属性特征,而通过三维构造恢复预测裂缝的方法则考虑了多期构造运动对裂缝发育的影响,特别是断层形态对上盘地层变形的影响。应用3DMove的三维面模型构造恢复方法,对惠民凹陷商541井区沙三段中亚段侵入岩进行了构造恢复,计算了侵入岩的现今累加应变量,并进行了裂缝预测;利用曲率属性提取方法对研究区的裂缝进行了预测,对2种方法的预测结果进行了对比。构造恢复方法预测结果表明,研究区商541、商548井区均具有较高的累加应变量,构造裂缝发育;曲率属性提取预测方法结果表明,商548井区曲率值低,裂缝不发育。参照商541和商548井的孔隙度、渗透率等参数,将2种裂缝预测方法进行了对比,基于三维构造恢复技术的裂缝预测方法预测效果较好。
Most of the fracture prediction methods are based on the current tectonic attribute characteristics. However, the method of recovering predicted fractures by three-dimensional structure considers the influence of multistage tectonic movement on fracture development, especially the influence of fault morphology on the deformation of the upper plate. Based on 3DMove 3D model reconstruction method, the structural restoration of the Middle Third Member of Member Shahejie Formation in Well 541, Huimin Depression was carried out. The current accumulated strain of the intrusive rock was calculated and the fracture prediction was made. The extraction method was used to predict the cracks in the study area, and the prediction results of the two methods were compared. The prediction results of tectonic restoration methods show that both the Shang 541 and Shang 548 wells in the study area have higher cumulative strain and tectonic fractures. The results of curvature attribute extraction prediction show that the curvature of Shang 548 well is low and the fractures are not developed. According to the porosity and permeability of Well 541 and Well Shang 548, two kinds of fracture prediction methods are compared, and the prediction method of fracture prediction based on three-dimensional structural restoration technology is better.