INPEFA在高分辨率层序地层研究中的应用——以鄂尔多斯盆地油房庄地区长4+5油组为例  

Application of INPEFA Technique to Research High Resolution Sequence Stratigraphy:as an Example of Youfangzhuang Area Chang 4+5 in Ordos Basin

作　　者：薛欢欢[1] 李景哲[2] 李恕军 王梦琪[1] 孙中强[1] 于涛[1] 

机构地区：[1]山东科技大学地球科学与工程学院,山东青岛266590 [2]北京师范大学资源学院,北京100875 [3]中国石油长庆油田探勘开发研究院长庆油田超低渗透油藏研究中心,陕西西安710021

出　　处：《中国海洋大学学报（自然科学版）》2015年第7期101-106,共6页Periodical of Ocean University of China

基　　金：高等学校博士学科点专项科研基金博导类课题项目(20110003110014)资助

摘　　要：目前利用常规测井曲线进行地层划分对比多解性强,测井曲线分层标志有时并不清楚,为提高层序划分的准确性及精度,本文利用最大熵谱分析方法,对测井曲线进行INPEFA处理得到频率趋势线,能够提取测井曲线所隐藏的周期性特征,描述地层的沉积旋回特征。通过对鄂尔多斯盆地油房庄地区长4+5油组自然伽马曲线进行INPEFA处理,得到频率趋势线并进行连井对比,将长4+5油组划分为6个中期基准面旋回,与现场地层划分具有良好的对应关系。研究认为,应用INPEFA技术可以明显的将地层的旋回特征表示出来,使各层序界面更直观、更明显,提高旋回划分、对比的精度和准确性,实现层序旋回划分从定性-半定量-定量的过程,是进行层序地层划分对比的有效手段。There may exist some ambiguity in stratigraphic correlation based on conventional welllogs.Aiming at solving the problems,the authors applied the INPEFA technique on the basis of maximum entropy spectrum analysis approach,acquired the INPEFA curves after processing of logging traces.We can rapidly and accurately identify different levels of sequence interfaces based on the curves.INPEFA curve and its inflection point can reflect the different levels of sequence boundary and the rhythm change of sedimentary cycle,therefore it has the ability in high resolution sequence stratigraphic isochronous contrast.This has paved the way for the fine stratigraphic classification,which has promoted the quantitative development of high resolution sequence stratigraphy.The paper showed the practical applied effects of INPEFA technique in Ordos basin.

关 键 词：最大熵频谱分析 高分辨率层序地层 INPEFA 地层划分 

分 类 号：P535[天文地球—古生物学与地层学]