可地浸砂岩型铀矿床性质及与油气藏关系.pdfVIP

可地浸砂岩型铀矿性质及与油气藏关系 [摘 要] 可地浸砂岩型铀矿是我国当前铀矿找矿的主攻类型 多数赋存于产油气盆地 与油气关系, , 十分密切。本文简要总结并阐述了砂岩型铀矿的几个主要方面的特征，包括：可地浸砂岩型铀矿床 特征及成矿条件；铀矿床的成矿模式；铀矿的勘查方法技术以及与油气藏的关系。有助于更好地认 , ( ) , ( ) 识可地浸砂岩型铀矿床，并且利用铀油相伴关系 在油气勘探中注意寻找铀矿 化 床 在铀矿 化 床周围的有利构造部位加强油气勘探是十分重要的。 [关键词] 可地浸砂岩型铀矿 成矿条件及特征勘查方法 油气藏; ; ; CharacteristicsofISL-amenable Sandstone-typeUranium Deposit andtheAssociation ofUraniumwith OilandGas Reservoirs Abstract: ISL-amenable sandstone-type uranium deposits are the currently main types of uranium prospecting, and occur mostly in oil-and gas-hosting basins, and are closely associated with oil and gas.This paper briefly summarizes and expounds several aspects of the characteristics of sandstone-type uranium deposits,including ore-forming conditions of and characteristics ,ore-forming models,techniques for prospecting and exploration of in-situ leachable sandstone-type uranium deposits and the association of uranium with oil and gas reservoirs.Finally,they contribute to a better understanding of ISL-amenable sandstone-type uranium deposits,and it is important to pay attention to search foruranium deposits during oil and gas exploration, and to strengthen oil and gas exploration at favourable sites around uranium depositsby using the association relation between uranium and oil. Key words: ISL-amenable sandstone-type uranium deposit; ore-forming conditions and characteristics; exploration techniques; oil andgas accumulation; 0 引言 盆地内陆续发现了白垩纪和第三纪地层中一 系列大型、超大型铀矿床，形成了当前世界 砂岩型铀矿是世界上最早发现的铀矿类 上最大的砂岩型铀矿矿集区(图1)。 型之一。据记载，科罗拉多中央区砂岩型铀 我国的铀矿勘查工作始于1955年。在以 矿最早发现于 1871 年 (Dahlkmp Franz 航空伽玛测量、地面放射性测量和地质追索 J. ,2009)。1880年在美国科罗拉多高原发现尤 所发现的首批铀矿床中，不乏产在中、新生