【摘要】 重新认识处于开发中后期油藏的沉积环境、沉积微相及其特征,对于查明剩余油分布和挖掘剩余油潜力、提高采收率具有重要的现实意义。综合岩心、测井、录井、地震及相关测试资料,对黄骅坳陷塘34断块沙一段下部沉积特征和沉积模式进行了系统研究。结果表明:该区沙一段下部为重力流水道沉积,包括水道中心、水道侧翼、水道岔道口以及水道间等4种微相。讨论了沉积微相与剩余油的关系:重力流水道正韵律储层上部、水道侧翼、分支水道以及分支水道岔道口剩余油富集。更多还原

【Abstract】 For re-understanding sedimentary environment , microfacies and the features of an oil reservoir at the mid-late development stages , it was great significance for clarifying the remaining oil distribution , the potential of remaining oil and improving oil recovery.Based on core , well logging , mud log , seismic and related test data , the sedimentary characteristics and patterns of the low member of Es 1 in the Fault Block T34of Huanghua Depression were systematically studied.The result indicates that low member of Es 1 belongs to gravity flow channel deposit , where 4microfacies can be classified , such as channel center microfacies , crotch of the distributary channel , channel margin and gravity channel microfacies.The relationship between microfacies and residual oil is discussed , the residual oil is enriched on the top of positive rhythm gravity flow channel , channel margin , distributary channel and crotch of the distributary channel.更多还原