吕孝威;王少飞;万友利;朱志良;韩翀;朱莎;

• 1:成都理工大学油气藏地质及开发工程国家重点实验室

• 2:成都理工大学能源学院

• 3:中国石化华北油田分公司勘探开发研究院

• 4:中国石油川庆钻探工程有限公司地质勘探开发研究院

摘要(Abstract)：

通过岩心观察、薄片鉴定,采用扫描电镜等技术,结合测井录井资料,分析鄂尔多斯盆地麻黄山西区块中生界延安组延8段储层砂体成岩相特征及油气地质意义.结果表明:延8段砂体储层为致密低渗透砂岩储层,优质储层主要发育在三角洲平原分流河道微相中,识别4种成岩相,即强烈压实致密相、胶结致密相、弱压实弱胶结相及强烈溶蚀相,其中弱压实弱胶结相和强烈溶蚀相中发育优质储层;研究区南部刚性颗粒含量高、黏土环边发育的层段主要呈弱压实弱胶结特征,能够保留较高的孔隙度;受埋藏期成岩酸性水及表生期大气淡水溶蚀强烈层段发育大量的次生孔隙,同时早成岩期压实作用较弱的砂体能够保存更多的剩余原生孔,为后期酸性水及大气淡水溶蚀提供良好的地层水输导通道.

关键词(KeyWords)：成岩相特征;油气地质意义;延8段;麻黄山西区块;鄂尔多斯盆地

Abstract:

Keywords:

基金项目(Foundation):国家自然科学青年基金项目(40602012);; 国家科技重大专项(2008ZX05045)

作者(Author):吕孝威;王少飞;万友利;朱志良;韩翀;朱莎;

Email:

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