【摘要】 低级序断层对于深度开发油藏剩余油分布规律以及水驱开发效果具有重要影响。以胜坨油田一区古近系渐新统沙河街组二段1—3砂组断背斜油藏为例,利用三维地震资料精细解释、密井网多井精细地层对比以及开发动态分析技术建立了符合油藏开发实际的低级序断层分布模型。研究表明,随着资料占有率的大幅度提高,油藏开发后期,需要综合利用多种技术和方法进一步更新对低级序断层分布的认识。受资料分辨率及断层规模限制,三维地震资料精细解释适合于四级断层模型的识别和重建,密井网多井精细地层对比适合于五级断层模型的精细描述,开发动态分析是验证地震、地质研究成果的重要手段。更多还原

【Abstract】 The low-order fault has great influence on the distribution of remaining oil and the exploitation effectiveness of water drive reservoir in deep development stage.This paper takes Es2(1-3) sand sets of district one in Shengtuo Oilfield for example,which is a faulted anticline reservoir.The distribution model of low-order fault is built to improve the geologic model by 3D seismic interpretation,multi-well strata correlation in close spacing and dynamic analysis of reservoir.The study shows that the low-order fault model needs to be updated with the raising of data occupancy in deep development stage.Limited by the data discernibility and fault dimension,the 3D seismic interpretation is suitable for the identification and rebuilding of the fourth order fault,while the multi-well strata correlation in close spacing is suitable to describe the fifth order fault,and the dynamic analysis is a very important measure to verify the seismic and geologic research results.更多还原