地震资料全三维精细构造解释技术研究

Fine Structure interpretation With 3Dimensional Seismic Data

利用三维地震数据体进行精细构造解释 ,首先对三维地震数据进行相干处理 ,通过分析相干数据体进行断层的自动与半自动解释 ,理清目标区内的断裂系统 ;其次再利用全三维追踪层位 ,解释目的层 (根据资料品质不同 ,相应采取自动、半自动追踪 ) ;由于地震波传播速度随岩性横向与纵向的变化而变化 ,最后将地震反射层等T0 图转换为深度构造图时 ,使用变速做图技术即得到较准确的地下构造 ,从而为部署井位提供准确的地质依据。

Fully utilizing 3 dimensional seismic data volume for fine structure interpretation is what our expected First, the 3D seismic data volume was processed coherently, then, analyzillg the coherent data volume to do auto and semiauto interpretation of faults The second, the target horizons were interpretated with whole 3D horizon tracing Due to the seismic wave's transmission speed varies with the lithology in different directions, when the T 0 maps of reflecting seismic reflection horizon etc were converted into geologic structure map in depth, the variable velocity mapping technique was used to get accurate underground structure, presenting accurate well Positions