曲率属性在3D地面地震资料中的应用

• 作 者: Satinder Chopra 赵剑敏 吴龙丽
• 出 处: 油气地球物理
• 发表日期: 2007年04期
• 关键词: 曲率 地震分辨率 地震属性 曲率属性 地震资料 曲率计算 断层 地层 地震解释 曲率图

结合褶皱和弯曲在地震分辨率范围内或更小尺度内识别地下断层和预测裂缝是精细地震解释的主要目的之一。随着20世纪80年代后期3D地震的普遍使用,人们发现以一阶导数为基础的层位倾斜量和倾斜方位角可以指示用其他方法看不到的断层。最近,开始采用以二阶导数为基础的曲率图,现在可以在商业工作站环境下进行以地层为基础的曲率运算。这些方法已被还没有使用处理软件和没有时间编写程序的地球物理学家们接受。

Identifying subterranean faults and predicting fractures within the seismic resolution range or smaller with folds and bends is one of the main purposes of fine seismic interpretation. With the widespread use of 3D earthquakes in the late 1980s, it was discovered that the amount of slope and tilt azimuth based on the first derivative can indicate faults not visible to other methods. Recently, the use of curvature maps based on second-order derivatives has begun to allow for formation-based curvature calculations in a commercial workstation environment. These methods have not been accepted by geophysicists who use processing software and do not have time to write programs.