摘要 通过对准噶尔盆地北三台凸起油气钻井的录、测井等资料分析发现,在新近系沙湾组底部发育一套异常高自然伽马砂砾岩,其中B311井GR值最高达1732.58 API,预示该区具有良好铀资源勘探前景。为准确预测该区含铀砂岩分布,通过精细的合成记录标定,对该含铀砂层提取地震属性。通过多属性融合与分析,预测含铀砂层平面分布,进而利用地震波形指示反演技术预测含铀砂层的垂向和平面展布特征,进一步提高预测精度,指出了铀矿勘探的有利区域。 According to the analysis of well logging and logging data of oil and gas drilling in Beisantai uplift of Junggar basin,a set of abnormal high natural gamma(GR)glutenite is developed at the bottom of Shawan Formation in the Neogene(N1s).The GR value of well B311 is up to 1732.58 API,which indicate that this area has a good prospect for uranium exploration.In order to predict the plane distribution of uraniferous sandstone in this area accurately,the seismic attributions of the seismic horizon corresponding to the uraniferous sandstone are extracted through high-precision synthetic calibration.Through multi-attribute fusion and analysis,the plane distribution of uranium bearing sand layer is predicted,and then the vertical and plane distribution characteristics of uranium bearing sand layer are predicted by using seismic waveform indication inversion technology,which further improves the prediction accuracy and points out the favorable areas for uranium exploration.
出处 《新疆地质》 CAS CSCD 北大核心 2021年第1期118-123,共6页 Xinjiang Geology
基金 国家重点研发计划项目北方砂岩型铀能源矿产基地深部探测技术示范(2018YFC0604204)资助。
关键词 北三台凸起 新近系沙湾组 含铀砂岩 地震属性 地震波形指示反演 分布预测 Beisantai uplift Neogene Shawan Formation Uraniferous sandstone Seismic attribution Seismic waveform indication inversion Distribution prediction
