盘河断块区馆三段河流相储集层特征及储集性能

盘河断块区馆三段储集层为辫状河流相沉积,从岩性、沉积构造、砂体形态和非均质性质等方面对河流相沉积的性质作了论述.沉积构造有层理、层面构造,砂体形态以箱形及钟形为主.对各小层沉积微相及平面分布进行了研究,主要发育河床滞留沉积和心滩微相.储集性能与沉积微相有较好的对应关系,心滩主体砂体厚度大、物性好、含油饱和度高,其次为心滩边缘,废弃河道较差,储层的含油性还受构造及成岩作用的控制.

Fluvial Reservoir Characteristics and Its Reservoir Property of the Third Member of Guantao Formation in Panhe Fault Block

The reservoirs of the third member of Guantao formation in Panhe fault block are mainly braided fluvial sediment, this article discusses fluvial sedimentary property in lithology,sedimentary structure,sandbody shape and heterogeneity, its sedimentary structures are mainly beddings and the structure of stratified plane and the shapes of sandbodies are mainly boxer like shape and bell shape. so, the author considers that each formation develops mainly lag deposit and mid channel bar microfacies according to its sedimentary microfacies and plane distributions. Reservoir property and sedimentary microfacies have better corresponding correlation: the main body of mid channel bars have the property of bigger thickness,better physical property and higher saturation than the fringe of mid channel bar and worse is discussed riverway, meanwhile, the oil bearing of reservoir is controlled by structure and diagenesis.