西藏伦坡拉盆地古近系页岩油资源潜力初探

发布时间：2018-05-21 17:59

  本文选题：牛堡组 + 页岩油　； 参考：《地球学报》2017年05期

【摘要】：本文在西藏伦坡拉盆地蒋日阿错凹陷西北部古近系牛堡组和丁青湖组实测剖面的基础上,通过对烃源岩有机质丰度、有机质类型、有机质成熟度及生标化合物等进行分析,认为牛堡组和丁青湖组烃源岩有机质丰度中等,有机碳含量TOC在0.91%~5.53%之间,氯仿沥青"A"在0.03%~0.63%之间,有机质类型主要为Ⅰ型,Tmax平均值为428℃,烃源岩处于未成熟-低成熟阶段。综合分析认为,研究区牛堡组是古近系最有利的烃源岩层段,与国内外典型页岩层各项指标对比,牛堡组具备页岩油形成的基本地质条件,但成熟度略低,推断位于蒋日阿错凹陷沉积中心的牛堡组烃源岩厚度更大、成熟度更高,页岩油潜力更大。
[Abstract]:Based on the measured profiles of the Niubu and Dingqinghu formations of the Paleogene in the northwestern Jiangri Acao depression, Luompola Basin, Tibet, the abundance, type, maturity and biochemistry of organic matter in source rocks are analyzed. It is considered that the organic matter abundance of source rocks of Niubu formation and Dingqing Lake formation is moderate, the organic carbon content of source rocks is between 0.91% and 5.53%, the chloroform asphalt "A" is between 0.033% and 0.63%, the average value of organic matter type 鈪，

本文编号：1920205