地震资料全三维精细构造解释技术研究

Fine Structure interpretation With 3 Dimensional Seismic Data

李勤英¹,阎育英²,赵爱武²
 

Li Qinying, YanYuying, Zhao Aiwu

1. 中原油田分公司地质调查处,2. 中原油田分公司勘探开发科学研究院
 

Geologic Survey and Data Processing Company , Zhongyuan Oilfield Company ,SINOPEC, Henan 457001 , P. R. China

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 T0 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.