准噶尔盆地西北缘乌尔禾砂岩型铀矿化特征及找矿前景  

Mineralization Characteristics and Prospecting Prospects of Sandstone Type Uranium in Wuerhe area,Northwest Margin of the Junggar Basin

作　　者：蔡义峰 薛冽[1] 高新峰 姚卫江[1] 邹红亮 潘拓 胡正舟 Cai Yifeng;Xue Lie;Gao Xinfeng;YaoWeijiang;Zou Hongliang;Pan Tuo;Hu Zhengzhou(Geophysics Institute,Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Urumqi,Xinjiang,830000,China)

机构地区：[1]中国石油新疆油田公司勘探开发研究院地球物理研究所,新疆乌鲁木齐830000

出　　处：《新疆地质》2024年第4期601-605,共5页Xinjiang Geology

基　　金：中国石油天然气股份有限公司前瞻性基础性战略性技术攻关项目(2021DJ5303)资助。

摘　　要：准噶尔盆地是我国北方砂岩型铀矿重要的含铀盆地之一,找矿空间巨大。乌尔禾位于准噶尔盆地西北缘,铀矿找矿信息丰富,但勘查程度较低。20世纪90年代发现了乌尔禾矿点,通过油田油气井测井资料分析,发现多口油气井中一下白垩统清水河组砂岩层发育大规模层间氧化带并出现自然伽马测井高异常值,其中W105井自然伽马值高达1472.72 API。通过定量γ测量及钻孔验证,明确乌尔禾地区清水河组具备巨大的铀找矿潜力,结合铀源条件、构造形态、沉积特征及矿体分布等,认为该地区可作为准噶尔盆地西北缘铀矿勘探及找矿突破的方向。The Junggar Basin is one of the most important uranium bearing basins for sandstone type uranium deposits in northern China.Wuerhe area is located in the northwestern margin of the Junggar Basin,with rich uranium ore prospecting information,but the exploration degree is relatively low.In the 1990s,the Wuerhe ore occurrences were discovered in this area.After investigating the logging data of oil and gas wells in the oilfield,it was found that multiple oil and gas wells exhibited abnormally high natural gamma logging characteristics in the sandstone layer of the Lower Cretaceous Qingshuihe Formation(K_(1q)),with the natural gamma value of well W105 reaching 1472.72API.Through quantitative analysis γ measure and uranium ore verification drilling,it is clear that Qingshuihe formation in the Wuerhe area has great prospecting potential.Combined with comprehensive analysis of uranium source conditions,structural morphology,sedimentary characteristics,etc.,the ore body may be distributed along the NE direction of Well W105,so this area can be regarded as the key field of uranium exploration and breakthrough in the the northwest margin of the Junggar Basin.

关 键 词：准噶尔盆地西北缘 乌尔禾地区 清水河组 砂岩型铀矿 找矿前景 

分 类 号：P619.14[天文地球—矿床学] P612[天文地球—地质学]