储层的表征技术--北一区断东西块高分辨率层序地层分析

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 new technique of reservoir characterization through high-resolution sequence stratigraphy analysis about Beiyiquduandongxi block of Sazhong zone

Now the Daqing Oilfield has oome into the latter stage of high water cut development, the process of tertiary recovery in some regions has been finished, and the distribution pattern, distribution area of the remaining oil in reservoir inside becorne more complex. However the traditional reservoir token technique of development geologie can not distinguish sedimentary genesis laws fully, special-ly tradilional token technique doesnt analyze the properties of reservoir from the point of the straligraphic proces. On this condition this paper puts forward using the theory of high resolulion sequence straligraphy as the guidance to study the stratigraphic process. From the point of stratigraphic process to analyze the base level of the Pu I reservoir of Beiyiquduandongxi block of Sazhong zone in order to cognition the property developrnenl laws of the reservoir ge-ometry, facies group and facies sequence, rock multiformity, bed-ding types and the difference of rock physical property and so on, thus we can draw the conclusion that these reservoir characterislic has direcl relation with stratigraphic process. When base level ( A/ S) rises, the width, thickness, effeclive thickness of the river course, the penetrability, porosity of the reservoir, the dislinction of the reservoir penetrability, the heterogeneous nature, the con-nectivity of different sequence sandbody between facies fields all become littte or poor accordingly, but when base level is in the stratigraphic process of falling, the physical property of these reser-voirs all become large and good accordingly. Thereby the different geologie properties of the reservoir can be described and forecasted on the basis of the stratigraphic process, and dynamic process of the four dimensions genesis of the reservoir can be analyzed.