罗超;罗水亮;胡光明;陈昌照;王子琦;

• 1:中国石油勘探开发研究院鄂尔多斯分院

• 2:长江大学油气资源与探测技术教育部重点实验室

• 3:长江大学地球科学学院

• 4:中国石油安全环保技术研究院

摘要(Abstract)：

浅水三角洲是当今油气勘探开发的热点与重点对象.扶新隆起带东缘泉四段沉积时期,古地形平坦,气候整体干旱,湖盆宽浅,具备发育大面积浅水三角洲的有利地质条件.为了更好地厘定扶新隆起带浅水三角洲沉积体系与油气勘探开发间的关系,利用13口井的岩心资料及近600口井的录井、测井资料,分析下白垩统泉四段的沉积特征及沉积模式.结果表明:研究区下白垩统泉四段沉积演化阶段,受西南保康水系的影响,发育树枝状浅水三角洲沉积体系.该三角洲沉积体系特征包括成分、结构成熟度中等,粒度偏细,概率曲线反映为浅水牵引流沉积特征;砂岩中发育丰富的强水动力沉积岩相;(水下)分流河道及席状砂大面积分布,河口坝不甚发育.三角洲平原和前缘亚相区,发育连片分布(水下)分流河道砂体为主体的富砂带,侧向叠置,切割严重,沿北北东向展布,向盆地方向延伸较远;受湖浪因素影响,在三角洲前缘发育大面积展布的薄层席状砂,具有沿向湖盆方向呈条带状延伸的分布模式.

关键词(KeyWords)：沉积特征;沉积模式;泉四段;浅水三角洲;扶新隆起带

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05015);; 国家自然科学基金项目(41472097);; 湖北省自然科学基金项目(2011CDB002)

作者(Author):罗超;罗水亮;胡光明;陈昌照;王子琦;

Email:

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