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东营凹陷新近系馆陶组是河流相沉积环境下形成的,地层对比划分难度较大,影响了对新近系馆陶组的地质评价和勘探部署。以层序地层学的基本原理为指导,综合运用岩心、录井和测井资料,建立了东营凹陷新近系馆陶组短期基准面旋回岩—电关系识别模型,确定了馆陶组高分辨率层序地层格架由1个长期基准面旋回、5个中期基准面旋回和17个短期基准面旋回构成;通过岩性及其组合特征和测井曲线特征对比分析,利用井震结合技术,实现了全区的等时地层对比,明确了东营凹陷馆陶组厚度变化很大,总体上具有东厚西薄、北厚南薄和中央厚周缘薄的特点。
The Neogene Guantao Formation in Dongying Depression was formed under the sedimentary environment of the river facies. The stratigraphic contrast was difficult to be divided and affected the geological evaluation and exploration deployment of the Neogene Guantao Formation. Guided by the basic principles of sequence stratigraphy and integrated core, logging and well logging data, a short-term gyroclastic-electrical relationship identification model for the Guantao Formation of the Dongying Sag was established. The high resolution The sequence stratigraphic framework consists of a long-term base-level cycle, five mid-term cycle cycles and 17 short-term cycle cycles. Through the lithology and its combination characteristics and the comparative analysis of well logging characteristics, the well-seismic combination technology is used The isochronous stratigraphic contrast shows that the thickness of the Guantao Formation in Dongying Depression varies greatly and generally has the characteristics of thin and thick east and west, thin and thin in the north and thick in the center.