地震地貌切片解释技术及应用

时间切片、沿层切片、地层切片、层拉平技术等是目前地震资料地质解释中分析构造、沉积与古地貌等的常用方法。针对沉积体系精细研究的特定需要，提出地震地貌切片的概念并归纳其制作方法。地震地貌切片是指沿地震数据体中反映一定时期古地貌特征的部位制作的一种地震切片类型。地质体空间追踪法和小时窗透视法是地震地貌切片制作的有效方法。地震地貌切片具有对约束层位等时性要求低而适应性广、从古地貌角度出发易于被地质人员理解而实用性强、采用将今论古对比分析方法而预测结果可靠的优势，是利用切片技术进行精细地震沉积分析的一种有效方法。通过实际应用，证实了地震地貌切片概念的科学性、切片制作方法的合理性及分析结果的有效性。

Interpretation technique of seismic geomorphological slice and its application

Time slicing，horizon slicing，stratal slicing and horizon flattening are analytical methods commonly used for studying structure,deposition and paleo-geomorphology in seismic interpretation.In this paper,the concept of seismic geomorphological slice and its making method are proposed for the practical needs for studying fine sedimentary system.A seismic geomorphological slice refers to a seismic slice extracted on a point of seismic data that significantly reflects the paleo-geomorphology of a geological period.Usually,it is made by spatial tracking of a geological body and small time-window perspective.This type of slice has low isochronous requirements to constrained horizons,so it is widely applicable in seismic data interpretation.It is easy to understand for geologists based on the analogy of geomorphology and has a strong practicability.It provides reliable prediction based on the idea of using the present as a key to understand the past.In summary,this method is effective for seismic sedimentary analysis.Practical applications have proved the scientificity of the concept,the rationality of the slicing method and the validity of the results.