辽河油田红星地区油气水层二次解释评价  

Secondary interpretation & evaluation of the water-oil-gas layers for Hongxing area of Liaohe Oilfield

作　　者：梁莹[1] 

机构地区：[1]辽河油田录井公司

出　　处：《录井工程》2007年第2期29-31,共3页Mud Logging Engineering

摘　　要：针对辽河油田红星地区缺乏系统的油气层判别标准,导致测井一次解释结果与试油、试采结论符合率相对较低,达不到实际开发要求的情况,对该区东营组和沙河街组沙一段储集层进行了深入研究。统计分析了储集层测井响应的初步判别特征;结合测井、录井、试油及试采资料分析,分别给出了油层“四性”———岩性、物性、含油性和电性的判别标准下限,即岩性下限为细砂岩,物性下限为≥16%、K≥10×10-3μm2,含油性下限为油浸,电性下限为R≥150Ω·m、Δt≥260μs/m;对于气层,利用声波时差与中子伽马比值交汇图识别效果较好,统计分析得出东营组气层判别标准下限Δt为300μs/m、qN/qN-S为1.20,沙河街组沙一段气层标准下限Δt为265μs/m、qN/qN-S为1.30。应用上述标准下限进行综合分析,在红星地区发现了一次解释未发现的新油气层,提高了该地区的油气储量。In view of the situation that Hongxing area of Liaohe Oilfield was lack of the systematic hydrocarbon reservoir discriminate standards, which resulted in the lower coincidence rate of the wireline logging primary interpretation results contrasting with that of oil testing and pre-production and couldn't reach the real development requirements, the paper made a thorough study of the reservoirs of Dongying formation and memberⅠof Shahejie formation and performed a statistical analysis of preliminary discriminating characteristics of reservoir well logging response. Combining with wireline logging, mud logging, oil testing and pre-production data analysis, the paper respectively gave out the low limit of the discriminating criteria for the oil layer four properties of lithology, physical property, oil-bearing property and electrical property, that is, the low limit for lithology is fine sandstone, the lower limit for physical property is ≥16%,K≥10×10-3 μm2,the low limit for oil-bearing property is oil cutting, and the low limit for electrical property is R≥150 Ω·m, Δt≥260 μs/m. The results of using cross plot of interval transit time and neutron gamma ratio to identify gas layers is good. It obtained from the statistic analysis that for the low limit of gas layer discriminating criteria of Dongying formation Δt is 300μs/m, the ratio of qN to qN-S is 1.20, and for the low limit of gas layers in memberⅠof Shahejie formation, Δt is 265μs/m, the ratio of qN to qN-S is 1.30. Applying the above lower criteria limits to make a comprehensive analysis, the new hydrocarbon reservoirs, which had not been found in the primary interpretation, were found in Hongxing region, thus increasing the oil-gas reserves of this region.

关 键 词：油气层 解释 评价 录井 测井 岩性 物性 含油性 电性 标准下限 

分 类 号：P618.130.2[天文地球—矿床学]