运用INPEFA技术开展层序地层研究  

Application of INPEFA technique to carry out sequence-stratigraphic study

作　　者：路顺行[1] 张红贞[1] 孟恩[2] 孙效功[3] 

机构地区：[1]中国海洋大学 [2]中国地质大学 [3]中国气象科学研究院

出　　处：《石油地球物理勘探》2007年第6期703-708,共6页Oil Geophysical Prospecting

摘　　要：在最大熵频谱分析法基础上形成的预测误差滤波分析法,经进一步改进而发展成INPEFA技术,对测井曲线进行处理可获得INPEFA曲线。基于层序地层学,利用此曲线可以快速、准确地识别不同级次的层序界面。INPEFA曲线的拐点反映了不同级次层序的界面,而INPEFA曲线的趋势反映了不同级次沉积旋回的气候、水体以及韵律变化。通过整体INPEFA分析划分1～3级层序,应用分段INPEFA分析可识别4～5级层序,应用局部INPEFA分析可判断6级层序(砂体)的连通性。本文应用CycloLog软件展示了INPEFA技术在苏北盆地及济阳拗陷的实际应用效果。The basic function of sequence stratigraphy is to divide different level of stratigraphic sequence.Applying the INPEFA technique developed by further improving the predictive error filtering analysis approach formed on the basis of maximum entropy spectrum analysis approach,the paper acquired the INPEFA curves after processing of logging traces.We can rapidly and accurately identify different levels of sequence interfaces based on the curves.The inflection points of INPEFA reflect the interfaces in different levels of sequences and the trend of INPEFA curve reflects the change of climate,water and rhythm in different levels of sedimentary cycles.Integral INPEFA analysis can divide first three levels of sequences,applying segment INPEFA analysis can identify fourth to fifth level of sequence and applying local INPEFA can judge the connectivity in sixth level of sequence (sand body).Applying INPEFA software,the paper showed the practical applied effects of INPEFA technique in Subei basin and Jiyang depression.

关 键 词：层序地层 INPEFA技术 边界识别 地层对比 砂体连通性 

分 类 号：P618.130.2[天文地球—矿床学]