吴旗地区长6油藏吴410井组投入开发以来,产量相对偏低,分析认为,储层孔隙结构是影响单井产能的重要因素。长6油藏以残余粒间孔为主,长石、岩屑及碳酸盐溶孔是其有效组成部分,孔隙直径10%~20μm,小孔占42%,喉道半径0·1~1μm,细喉和极细喉约占52·2%,与细喉以上连同的孔隙仅占23·6%,与细喉和极细喉连同的孔隙仅占62·8%,孔隙结构以小孔细喉为主。 Since Wu 410 well group of Chang 6 reservoir in Wuqi area has been put into development, the output is relatively low. According to the analysis, the pore structure of the reservoir is an important factor affecting single well productivity. Chang 6 reservoir is dominated by residual intergranular pores. Feldspar, cuttings and carbonate dissolved pores are the effective components. The pore diameter is 10% ~ 20μm, the pores are 42%, the throat radius is 0.1 ~ 1μm While fine throat and ultrafine throat occupy 52.2% of the total, accounting for only 23.6% of the total with fine throat and above, and only 62.8% of the total with fine throat and fine throat. The pore structure is characterized by small holes Throat-based.