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OALib Journal期刊
ISSN: 2333-9721
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利用谱分解技术预测河流相储层
Keywords: 谱分解,曲流河,沉积微相,砂体厚度,响应频率,调谐体
Abstract:
？利用谱分解技术对原始地震数据体进行相应的数学变换可得到调谐体、时频体和单频体(振幅体和相位体),进而通过对调谐体、时频体和单频体的解释得到对目标体的地质认识。本文应用最大熵法定量求取储层厚度,并对误差进行分析,同时运用频率扫描方法定性预测储层厚度变化,并利用广义s变换方法和交会融合预测沉积微相。首先,通过多井对比,分析测井相和砂体厚度;然后通过井震结合,分析各井对应井段的薄层砂岩振幅调谐体,确定合理的调谐频率,并对砂体厚度进行分析;再通过建立响应频率、砂体厚度与沉积微相之间的交会关系,在测井微相约束下预测沉积微相。应用结果证实,谱分解技术结合井资料可直观地反映河道砂体储层厚度分布和沉积微相区带展布规律。
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|
| [14] | lixiaomei,yulijuan.applicationoftime-frequencyanalysistodivisionofcyclicalsequence.oil&gasgeology,2008,29(6):793-796.
|
| [15] | 魏志平.谱分解调谐体技术在薄储层定量预测的应用[j].石油地球物理勘探.2009,44(3):337-340浏览
|
| [16] | weizhiping.applicationofspectrum-decompositiontuningbodytechniquetoquantitativelypredictthinreservoir[j].ogp.2009,44(3):337-340浏览
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|
| [22] | changwenhui,zhaoyonggang,lusong.featuresofsedimentarymicrofaciesandelectrofaciesofmeanderingriverdeposits.naturalgasindustry,2010,30(2):48-51.
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|
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