苏东旭;于兴河;李胜利;单新;周进松;韩小琴;苗亚男;王娇;

• 1:中国地质大学(北京)能源学院

• 2:陕西延长石油(集团)有限责任公司研究院

摘要(Abstract)：

综合利用测井、岩心、薄片及野外露头等资料,分析鄂尔多斯盆地南部石盒子组分流河道砂体结构、沉积构造、岩相组合、砂地比、测井响应、河道垂向叠置样式和平面形态等特征,以及石盒子组基准面变化与三角洲分流河道沉积的响应关系.结果表明:基准面处于低位阶段时,砂岩粒度最粗,分流河道广泛发育,以辫状河型为主,弯曲度较小;随着基准面逐渐上升,分流河道数量减少,以曲流河型为主,弯曲度逐渐增大;基准面处于高位阶段时,分流河道数量逐渐增加,以网状河型为主,弯曲度最大.随基准面变化,三角洲分流河道具有辫状河型—曲流河型—网状河型的演化特征,建立分流河道沉积演化模式.该研究为研究区下一步勘探和开发提供依据.

关键词(KeyWords)：基准面变化;分流河道;曲流河;辫状河;网状河;沉积特征;鄂尔多斯盆地;石盒子组

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金项目(41272132)

作者(Author):苏东旭;于兴河;李胜利;单新;周进松;韩小琴;苗亚男;王娇;

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