应用测井资料预测致密油有利区方法研究

Using Log Data to Predict Tight Oil Distribution

齐家地区高台子致密油为勘探和储量评价重点,通过致密油单井产量分析,其大小与烃源岩特性和储层的储集能力密切相关。采用地球化学研究与测井技术相结合,应用岩心刻度测井技术,建立了烃源岩特征参数有机碳、镜质体反射率和生烃潜量测井解释模型,形成了一套烃源岩测井评价方法,为致密油研究奠定基础。应用岩电实验和核磁共振实验资料进行储层有效性评价,为确定致密油层下限探索了一种新方法。在烃源岩和储层平面特征评价基础上,采用面积叠合法进行了的致密油有利区预测,成果已应用到储量评价和井位部署中,效果良好。

The tight oil sandstone reservoir is the key of exploration and reserves evaluation in Gaotaizi formation in northern Songliao basin.Single-well tight oil production is related to characteristics of hydrocarbon source rocks and the reservoir capacity of reservoirs.A fine reserves parameter interpretation model is established.The log interpretation model of source rocks characteristics parameters such as TOC,Ro,S1+S2 were set up using the method of geochemical study combined with logging technology,then forming a set of log evaluation methods on hydrocarbon source rock,which is a good foundation for the study on the tight oil sandstone.Reservoir effectiveness evaluation method was carried out in use of rock-electric experiment and NMR experiment data to determine reservoir lower limit.That is a new exploration to determine physical properties cut-off for the tight oil sandstone formation.Planar distribution characteristics analysis was developed on hydrocarbon source rock and reservoir quality,so optimizing favorable area of tight oil sandstone for source rock and reservoir quality.The technical evaluation results have been applied in some studied fields such as well placement and reserves comprehensive evaluation,and show good application results.