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采用高分辨率层序地层学的基本理论和研究方法,结合露头剖面、岩心资料及测井曲线频谱分析,共识别出5个长期层序、23个中期层序旋回;通过层序地层与储层的关系研究,认为A/S比值及层序界面对储层的空间展布和物性变化具有明显的控制作用,最有利的储层发育位置出现在长期基准面上升早期和下降晚期,特别是中期和长期两个级次基准面相互重叠的界面两侧,酸性孔隙流体沿着界面运移,有利于形成次生孔隙。该项研究成果为进一步的油气勘探和开发提供了依据。
Based on the basic theories and research methods of high-resolution sequence stratigraphy, combined with outcrop profile, core data and well logging curve analysis, five long-term sequences and 23 mid-term sequences are identified. By means of sequence stratigraphy and storage Layer relationship, we believe that the A / S ratio and sequence boundaries have significant control over the spatial distribution and physical properties of reservoirs. The most favorable reservoir development position appears in the early and late long-term rise of long-term baselines, especially On both sides of the interface where the mid-term and long-term two-level datums overlap each other, the acidic pore fluid migrates along the interface, which is conducive to the formation of secondary pores. The research results provide the basis for further oil and gas exploration and development.