基于qp波及qs波衰减系数检测裂缝的方法  

Method of fracture detection based on attenuation coefficient of qp wave and qs wave

作　　者：李金泉[1] 韩立国[1] 罗金梅 党丹[1] 乔振民[1] 

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026 [2]恒泰艾普石油天然气技术服务股份有限公司,北京100084

出　　处：《世界地质》2011年第2期282-288,共7页World Geology

摘　　要：裂缝储层预测是当前国内外油气勘探中的重点和难点,而裂缝储层预测最关键的问题是裂缝发育带的检测。基于qp波、qsh波、qsv波的衰减系数对裂缝发育带的检测,利用Hudson理论模型经数值计算,分别研究了裂缝密度、入射角及频率对qp波、qsh波、qsv波衰减系数的影响。理论模型试算表明,频率和裂缝密度是影响衰减系数的主要参数,而裂缝中充填物不同时,衰减系数也表现出很大的差异,这为利用qp波、qsh波、qsv波衰减属性检测裂缝发育带提供了理论依据。Fractured reservoir prediction is the emphasis and difficulty of current oil and gas exploration,and the key of the prediction is detection of fractured zones.Based on the attenuation coefficient of qp-,qsh-and qsv waves,the authors study the detection of fractured zones,including the effects of fracture density,incident angle and frequency to the attenuation coefficient of the three kinds of waves through numerical calculation using Hudson theoretical model.The test of theoretical model indicates that the frequency and fracture density are the major parameteres which affect the attenuation coefficient,and the attenuation coefficient represents prodigious difference when the fillings of fractures are different,which provides a theoretical basis for the detection of fractured zones using attenuation property of qp wave,qsh wave and qsv wave.

关 键 词：裂缝检测 各向异性 qp波 qsh波 qsv波 衰减系数 

分 类 号：P631.4[天文地球—地质矿产勘探]