苏里格气田苏54区块山1段储层宏观非均质性研究

Study On Reservoir Macro Heterogeneity of Shan1 Formation In Su-54 Region of Sulige Gas Field

鄂尔多斯盆地苏里格气田苏54区块二叠系山西组1段(山1段)为曲流河背景下的沉积产物,储层纵向上多期叠置,砂体横向迁移变化快。以测井、取芯井资料为基础,山1段储层垂向上自上而下分为山11、山12、山13三个小层,系统研究了山1段储层宏观非均质性,结果得知各小层非均质程度各异;受沉积相控制,山1段砂体呈南北或近南北走向;孔隙度与渗透率平面上分布具有一定相关性。

Member 1 of Shanxi formation（Shan1）,in Su-54 region of Ordos basin Sulige gas field,is a production due to the meandering river deposit background. Vertically,the reservoir is multi-stage superimposed. Meanwhile, the lateral migration of sand body changes quickly. Based on well logging and the data of coring wells,Shan 1 is de-vided into Shan11,Shan12,Shan13 from top to bottom vertically. The systematic research of reservoir macroscopic heterogeneity of Shan1 shows that each small layer has different degree of heterogeneity;besides,controlled by sedi-mentary facies,the run of Shan1 sand body presents north and south or nearly north and south. The planar distribu-tion of porosity and permeability of Shan1 formation also has a certain correlation.