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大庆油田已进入高含水开发后期,有些区块聚合物驱过程已经完成,储层内的剩余油分布类型、区域更加复杂,而传统的开发地质储层表征技术不能充分的认识储层的沉积成因规律,特别是没有从地层的角度来分析储层各属性。在这种条件下,本文提出利用高分辨率层序地层学理论作为指导,对地层过程进行研究,通过地层过程的角度对萨中地区北一区断东西块葡一组的基准面升降分析,来认识储层的几何形态、相组合和相序、岩石多样性、层理类型和岩石特征的差异等属性的发育规律,得出这些储层属性特征与地层过程有着直接的关系,当基准面(A/S)升高的时候,河道的宽度、厚度、有效厚度、储层的渗透率、孔隙度,储层渗透率的级差、非均质性、各层序砂体相域之间的连通性都相应地变小或变差,当基准面降低时,这些储层的物性都相应的变大或变好,从而根据地层过程来描述和预测储集层的各种地质属性,对其四维成因动力过程进行分析。
The Daqing oilfield has entered the later period of high water cut. Some polymer flooding processes have been completed in some blocks, and the types and regions of remaining oil distribution in the reservoir are more complicated. However, the traditional techniques of developing geological reservoir characterization do not fully understand the sedimentary genesis of the reservoir The laws, in particular, do not analyze the properties of the reservoir from a stratigraphic point of view. Under such conditions, this paper proposes the use of high-resolution sequence stratigraphy theory as a guideline to study the process of stratigraphy, and through the stratigraphic process, To understand the development law of the properties of the reservoir geometry, phase combination and phase sequence, rock diversity, the type of bedding and the difference of rock characteristics. It is concluded that the characteristics of these reservoirs have a direct relationship with the formation process. When the datum (A / S), the width, thickness, effective thickness of the channel, reservoir permeability, porosity, reservoir permeability gradient, heterogeneity, Connectivity decreases or decreases correspondingly, and as the datum surface decreases, the physical properties of these reservoirs are correspondingly larger or better, so that the various geological properties of the reservoir are described and predicted according to the formation process, Four-dimensional cause of the dynamic process analysis.