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.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2008年第5期94-98,共5页
Journal of Oil and Gas Technology
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
oil saturation
oil base mud
water base mud
low permeability reservoir
low permesbility coring
