【摘要】 裂缝及断裂的发育与展布影响着潜山的储层和成藏条件。体曲率属性是地震几何属性中的重要方法，可以识别地层的弯曲和不连续性，对于裂缝的预测有着重要作用。倾角扫描技术决定了曲率提取效果的精度，为了得到高质量的体曲率属性，笔者在基于相似性扫描的基础上提出采用三维球形时窗进行倾角估计。该方法以分析点为球心在周围生成一个球体，球体所包含范围内的时窗将参与分析点的倾角扫描计算，球形时窗可以上下左右移动。与此同时利用遗传算法适应性搜索和能够处理非线性问题的特点，将遗传算法与最小二乘法插值拟合相结合以求出更准确的倾角数据，大大提高了计算的效率与精度。经实际工区资料试验证明较常规多窗口倾角扫描方法，该方法能够更细节地识别和刻画出潜山内部的裂缝，使得曲率估计更加精确，对于后期解释工作的开展有着重要意义。更多还原

【Abstract】 The development and distribution of fractures and faults affect the reservoir and accumulation conditions of buried hills.Curvature attribute is an important method in seismic geometric attributes. It can identify the bending and discontinuities of the formation and plays an important role in predicting the formation’s properties, as well as in predicting fractures. Inclination scanning technology determines the accuracy of the curvature extraction effect. In order to obtain high-quality volume curvature attributes, this paper proposes a three-dimensional spherical time window for inclination estimation based on similarity scanning. This method takes the analysis point as the center of the sphere to generate a sphere around it. The time window within the sphere will participate in the inclination scanning calculation of the analysis point, and the spherical time window can move up and down. At the same time, by combining the adaptive search of the genetic algorithm with the ability to handle nonlinear problems, the genetic algorithm is integrated with least squares interpolation fitting to obtain more accurate inclination data, which significantly improves the efficiency and accuracy of the calculation. The actual work area data test demonstrates that, compared to the conventional multi-window dip angle scanning method, this method can identify and characterize cracks inside the buried hill in greater detail, thereby making curvature estimation more accurate, which is of great significance for the development of subsequent interpretation work.更多还原