【摘要】 通过以三维地震资料为约束,以岩心和录井测井资料作标定,以Fischer图解和小波分析为核心,以泥岩声波时差为参考的多因素层序地层分析技术,对牛庄洼陷沙三段上亚段—沙二段进行了高精度层序地层学研究。划分出2个层序、6个准层序组和21个准层序,建立了研究目的层的高精度层序地层格架。Fischer图解可有效地反映可容纳空间的变化,小波分析可划分沉积旋回,两者相结合既可以提高Fischer图解的准确性,又可以直接划分准层序。更多还原

【Abstract】 The upper Es3 to Es2 of Niuzhuang Ssag can be divided into two sequences,six subsequence groups and twenty-one subsequence by using the polyfactorial analytic method of sequence stratigraphy,which takes the 3D seismic data as the constraint,uses the core and logging data as the demarcation,takes Fischer plot and wavelet analysis as the nucleus and also refers to the information of sonic logging in mud.Then the high-resolution sequence strati-graphic framework of the target strata was built.Fischer plot can reflect the transformation of the accommodation,wavelet analysis can be used to divide sedimentary cycles,and the combination of them can improve the accuracy of the Fischer plot and divide the subsequence directly.更多还原