【摘要】 辽河滩海地区海月构造带东三段发育典型的滨浅湖滩坝沉积。以滩坝砂岩为主要储集体的地层岩性油藏已经成为该区重要勘探领域。滩坝砂岩具有岩性细(以细砂岩、粉砂岩为主)、单层厚度薄、横向变化快的特点,分布规律复杂,预测难度大。本文以海月构造带东三段为例,在分析滩坝砂岩地球物理特征的基础上,开展了滩坝砂体预测和描述的地球物理技术方法研究,形成了以古地貌分析、地震多属性分析、波阻抗反演为核心技术的一套预测方法。通过多种技术的综合对比应用,在滩坝砂体的预测中取得了较好应用效果。更多还原

【Abstract】 The typical shore-shallow lake facies beach-bar sand reservoir is developed in the third member of Dongying Formation of the Haiyue tectonic belt in the Liaohe tidal zone.With beach-bar sands as the main reservoir bodies,stratigraphic-lithologic reservoirs have become a very important target of petroleum exploration in the zone.The beach-bar sands have features of fine rocks(mainly fine sandstones and siltstones),small thickness of single layers,large lateral variation and complex distribution rules,so the prediction of this kind of reservoirs is difficult.Taken the third member of Dongying Formation of the Haiyue tectonic belt as an example,on the basis of analyzing the geophysical characters of beach-bar sands,the geophysical technology and method research has been carried out on the prediction and characterization of beach-bar sand bodies,and a series of prediction methods has been put forward,with palaeo-geomorphology analysis,seismic multi-attribute analysis,and seismic impedance inversion as the key technologies.The comprehensive application of multi-technologies has got encouraging results in the prediction of beach-bar sands.更多还原