不同取心方法条件下的低渗透油层含油饱和度数据分析  

Analysis on Oil Saturation of Low Permeability Reservoirs by Using Different Coring Methods

作　　者：张晓岗[1] 余光华[1] 胡晓辉[2] 

机构地区：[1]胜利油田有限公司地质科学研究院,山东东营257015 [2]胜利油田有限公司孤岛采油厂信息中心,山东东营257015

出　　处：《石油天然气学报》2008年第5期94-98,共5页Journal of Oil and Gas Technology

摘　　要：含油饱和度是储量计算中的重要参数,通常通过岩心分析的方法来确定,油基泥浆取心分析的含油饱和度可信度高于水基泥浆分析的含油饱和度,但是油基泥浆取心成本太高。基于低渗透情况下储层自身密闭性良好的考虑,对比了油基泥浆取心和水基泥浆取心分析的原始含油饱和度,论证了在低渗透储层条件下,用水基泥浆取心替代油基泥浆取心确定储层原始含油饱和度的可行性。Oil saturation was an important parameter in calculating reserves.Generally,it was determined by core analysis,the reliability in oil saturation of oil base mud core analysis was higher than that of water base mud core analysis,but the cost of oil base mud coring was too high.Based on the aspects of good sealing reservoirs in low permeability situation,the oil saturation of oil base mud core analysis was compared with that of water base mud core analysis.It is demonstrated that it is feasible to use water base mud core analysis to replace oil base mud core analysis in low permeable reservoir.

关 键 词：含油饱和度 油基泥浆取心 水基泥浆取心 低渗透储层 

分 类 号：P618.13[天文地球—矿床学]