上海国土资源
上海國土資源
상해국토자원
2015年
1期
76~79
,共null页
测井曲线 零通小波 模极值 小波变换 多尺度
測井麯線 零通小波 模極值 小波變換 多呎度
측정곡선 령통소파 모겁치 소파변환 다척도
well logging curve; zero crossing wavelet; modulus maxima; wavelet transform; multi-scale
测井信号是岩性、地层微观结构、含流体性等各种信息的总和,测井数据是反映地质体地质信息的载体,地层变化主要体现在测井信号的突变点或突变区域中.以某测井的自然伽马曲线为例,提出应用零通小波、模极大值对测井曲线多尺度分析,在不同尺度上定量划分出不同级别的地层界面,分析结果与实际地层界面一致.小波分析为地层的定量划分提供了一种新的思路.
測井信號是巖性、地層微觀結構、含流體性等各種信息的總和,測井數據是反映地質體地質信息的載體,地層變化主要體現在測井信號的突變點或突變區域中.以某測井的自然伽馬麯線為例,提齣應用零通小波、模極大值對測井麯線多呎度分析,在不同呎度上定量劃分齣不同級彆的地層界麵,分析結果與實際地層界麵一緻.小波分析為地層的定量劃分提供瞭一種新的思路.
측정신호시암성、지층미관결구、함류체성등각충신식적총화,측정수거시반영지질체지질신식적재체,지층변화주요체현재측정신호적돌변점혹돌변구역중.이모측정적자연가마곡선위례,제출응용령통소파、모겁대치대측정곡선다척도분석,재불동척도상정량화분출불동급별적지층계면,분석결과여실제지층계면일치.소파분석위지층적정량화분제공료일충신적사로.
The logging signal is the summation of lithology, stratigraphic structure, fluid properties, and other information.The well logging curve contains the geological information of geological bodies, and changes in formation are reflected insharp or gradational boundaries between different logging signals. Taking the gamma ray curve of a well log as an example,this paper presents a multi-scale analysis of the logging curve applying a zero-crossing wavelet and modulus maxima.Quantitative classifications of different stratigraphic interfaces are made at different scales, and the results are consistentwith the actual boundaries of the formations. Wavelet analysis constitutes a new method for quantitative stratigraphicdemarcation.
