基于拓频的波形差异反演在渭北油田的应用  

Application of Waveform Difference Inversion Based on Frequency Expanding to Weibei Oilfield

作　　者：彭作磊 曲江秀[1] 李宝刚[1] Peng Zuolei;Qu Jiangxiu;Li Baogang(School of Geosciences,China University of Petroleum,Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院

出　　处：《宁夏大学学报（自然科学版）》2019年第4期410-416,共7页Journal of Ningxia University(Natural Science Edition)

基　　金：国家科技重大专项基金资助项目(2016ZX05001)

摘　　要：利用波形差异反演方法预测渭北区块内的有利储层.以渭北油田长6、长7油层组作为研究对象,针对研究区内井网密度低,典型的低孔、低渗型储层,地震资料较差的地质情况,基于拓频技术(HFE)的波形差异反演预测有利储层,并进行可行性分析.结果表明,不同特征层段的地震波形具有明显差异性,经过拓频的波形差异反演大大提高了反演体的分辨率以及反演精度,反演结果可靠,较好地反映了井间储层空间的展布规律.有利储层主要发育在渭北58井、渭北67井以及渭北22井附近的构造高部位.The article studies the prediction of favorable reservoirs in the section of Weibei District with the method of waveform difference inversion.Taking Chang 6 and Chang 7 oil reservoirs of Weibei Oil field as the main research objects in this study,the article,specific to the geological condition of low well spacing density,low porosity,low permeability reservoir and poor seismic data in the area,optimized waveform difference inversion based on frequency expanding technology to predict favorable reservoir and conduct feasibility analysis.The result shows that,seismic waveform of different feature level have instinct difference,the waveform difference inversion after frequency expanding enhances the invertomer’s resolution ratio and inversion accuracy to a great extent,and the consequence of inversion is reliable,which better reflects inter-well reservoir spatial distribution laws,and the beneficial reservoir mainly developed in structural high part near Weibei well 58,Weibei well 67,and Weibei well 22.

关 键 词：渭北油田 储层特征 储层反演 拓频 波形差异反演 

分 类 号：P618.130.1[天文地球—矿床学] TP183[天文地球—地质学]