【摘要】 红岗地区高台子油藏的某些层位是明显的低阻油层,搞清这些低阻油层的成因及其分布规律是油田开发的重要任务之一。通过对低阻油层分布规律及其与岩性、岩相和流体性质的分析,查明了低阻油层分布规律及成因。分析表明,纵向上,低电阻率油层主要分布在岩性细、泥质含量高的第21、22、25小层,主要发育在前三角洲相沉积层中。平面上,低电阻率油层主要分布在前三角洲沉积的薄层砂中。低阻油层形成的根本原因是岩石颗粒细、油藏幅度小、泥质含量高及低含油饱和度。这些因素单独作用或共同作用,使该地区部分油层表现出低阻特征。更多还原

【Abstract】 Some of horizons in Gaotaizi Reservoir of Honggang Oilfield were obvious low permeability pay zones.To clarify their genesis and distribution rules was one of the important tasks.Through analyzing its distribution rules,lithology,lithic facies and fluid properties,its distribution rules and genesis were identified.The analysis shows that vertically the low-resistivity reservoirs are mainly distributed in 21,22,25 subzones with fine lithology and high shale content,they are mainly grown in front delta sediments.Horizontally the low-resistivity reservoirs are mainly distributed in thin sands of front delta sediments.The main causes of their formation are rocks with fine particles,reservoirs with low amplitude,high shale content and oil saturation,same of pay zones in the area present low resistivity because of the unique action or co-action of these factors.更多还原