孤南地区浅层稠油弹性参数敏感性分析及应用  

Sensitivity analysis of elastic parameter for heavy oil reservoir and its application in Gu'nan area

作　　者：王振涛[1] 董月昌[2] 王玉梅[1] 

机构地区：[1]中国石油化工股份有限公司胜利油田分公司物探研究院,山东东营257022 [2]中国石油化工股份有限公司胜利油田分公司勘探处,山东东营257022

出　　处：《石油物探》2014年第3期360-366,共7页Geophysical Prospecting For Petroleum

基　　金：中国石油化工股份有限公司科技攻关项目"叠前波形反演方法及应用研究"(P12038)资助

摘　　要：针对孤南地区浅层稠油藏地震流体预测问题,考虑油藏温度、压力以及地层水矿化度影响,利用经验公式估算了地层条件下稠油和地层水的纵波速度和密度,认为地层条件下稠油和矿化水弹性参数的差异要比地面条件下明显;在测井岩石物理横波估算和流体替换技术应用的基础上,对储层岩性和流体敏感弹性参数分析认为,砂岩储层相比围岩低泊松比特征明显,由于储层孔隙大,流体对饱和岩石弹性参数影响大,含油砂岩相比含水砂岩低拉梅系数参数特征明显,利用泊松比和拉梅系数可以较好地识别油层;通过叠前反演得到的泊松比和拉梅系数体开展双参数油层识别技术应用,提高了浅层稠油藏的油层预测能力。Aimed at solving the problem of fluid identification for heavy oil reservoir in Gu＇nan area,P-wave velocity and density of heavy oil and formation water under formation condition are estimated by empirical formula in the premise of considering the influences of temperature,pressure and formation water salinity.The results show that the difference of elastic parameters between heavy oil and the formation water under formation condition is greater than those of ground conditions.Based on the application of S-wave velocity estimation and fluid substitution techniques,the elastic parameters sensitive to lithology and fluid in reservoir are studied,and the results show that the Poisson＇s ratio parameter of sandstone is obviously lower than that of surrounding rock and the Lame coefficient for oil bearing sandstone is obviously lower than that of water-bearing sandstone.The two parameter cubes of Poisson＇s ratio and Lame coefficient are extracted by prestack inversion for heavy oil reservoir recognition.The prediction of shallow heavy oil reservoir is improved based on the two parameters reservoir recognition technology in Gu＇nan area.

关 键 词：浅层 稠油 弹性参数 叠前反演 油层识别 孤南地区 

分 类 号：P631.4[天文地球—地质矿产勘探]