靖安油田盘古梁长6油层组储层流动单元研究

A study on the flow units of chang-6 reservoir in Panguliang,Jing'an oilfield

储层流动单元划分对认识油藏的非均质性、注水开发效果和剩余油分布规律研究提供了有效手段。以靖安油田盘古梁长6油层组为例,选取了渗透率、孔隙度、储层质量指数、标准化孔隙度指数及流动带指数作为研究区流动单元划分的参数,将靖安油田盘古梁长6储层流动单元划分为A、B、C3类,划分结果与沉积微相、砂体展布、物性具有很好的对应关系,能够真实客观地反映低渗砂岩储层物性差、非均质性强的地质特征。

The division of reservoir flow unit is an important method in the understanding heterogeneity of reservoir、evaluateing effect of waterflood and distributing of remaining oil.In this paper,we take Panguliang areas Chang-6 formation in Jing`an oilfield as an example,we select the permeability,porosity,reservoir quality index,standardized porosity exponent and flow zone index as a unit of study area flow parameters of reservoir flow units which has been divided and discussion.The flow units in Chang-6 reservoir in Panguliang,Jing'an oilfield,it can be classified into 3 types:type A,type B and type C,with the reservoir properties and the permeability properties changing from superior to inferior.there is a good correspondence with sediment microfacies、distribution of sand body and physical property and the classification results which is able to truly and objectively reflect the geologic features of ultra-low permeability reservoir,such poor property characteristics and strong heterogeneity.The relational conclusions were obtained and rationalization proposals were put forward in order to improve the effect of reservoir development.