论文部分内容阅读
刘五舍次凹戴南组具有从下往上逐层超覆的沉积特征,发育来自不同方向的三角洲、扇三角洲沉积体系,具备形成地层超覆、岩性及复合型油藏的地质条件。但由于戴南组为典型的砂泥岩薄互层沉积,纵向上不同砂层组的沉积旋回特征、砂地比差异大,储层地震预测难度大。在地层对比和井震关系研究基础上,利用多属性综合分析、基于相控的测井约束稀疏脉冲反演和有效砂体解释技术,开展薄互储层预测,发现了一批地层超覆、构造-岩性圈闭,为该区提供了有利钻探目标。
Sedimentary features of the Dadunnan Formation from top to bottom are superposed over each other and developed delta and fan delta depositional systems from different directions with the geological conditions for the formation of stratigraphic overrides, lithology and composite reservoirs. However, the Dainan Formation is characterized by thin interbedded sandstone and shale deposits, sedimentary cycles of different sand layers in the vertical direction, large differences in sand-ground ratio, and great difficulty in predicting reservoir earthquakes. Based on the study of the relationship between formation stratigraphy and seismic well, a multi-attribute comprehensive analysis, phased logging-constrained sparse pulse inversion and effective sandbody interpretation techniques are used to predict the thin- Tectonic-lithological traps provide favorable drilling targets for the area.