永乐油田葡47区块储层非均质性研究

Reservoir Heterogeneity of Putaohua Reservoir in Block Pu47 of Yongle Oilfield

对永乐油田葡47区块葡萄花油组储层的非均质性从微观、层内、层间和平面4个方面进行系统研究。研究发现,葡47区块葡萄花油层储层为中-低孔低渗型储层,储层的孔隙结构非均质性较强;层内非均质性属于中等非均质-强非均质性,层内夹层多,层间非均质性较强;通过葡萄花油层砂体厚度、孔隙度、渗透率平面分布图得知,储层物性、非均质性平面分布受砂体的发育程度的控制。

This article systematically studied Putaohua oil group reservoir heterogeneity of Yongle Oilfield in Block Pu47 from four aspects of microscope introlayer,interlayer,plane.The reservoir is medium-low porosity and low permeability,the reservoir's pore structure has strong heterogeneity;heterogeneity in layers can be classified into medium to strong.There are many sands in layers and it has strong heterogeneity between layers.From plane distribution maps of sand thickness,porosity,permeability,it shows that plane distribution of the heterogeneity is controlled by the development of the sand.