[1]胡勇,胡佳,刁慧,等.丽水凹陷灵峰组有机相分布特征及其优质烃源岩指示意义[J].长江大学学报(自然科学版),2026,(2):44-57.
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丽水凹陷灵峰组有机相分布特征及其优质烃源岩指示意义()

长江大学学报(自然科学版)[ISSN:1673-1409/CN:42-1741/N]

卷:
期数:
2026年第2期
页码:
44-57
栏目:
地质资源与地质工程
出版日期:
2026-03-25

文章信息/Info

文章编号:
1673-1409 (2026) 02-0044-14
作者:
胡勇胡佳刁慧张建伍张铜磊朱建斌
油气地球化学与环境湖北省重点实验室(长江大学),湖北 武汉 430100 中海石油(中国)有限公司上海分公司勘探开发研究院,上海 200335 中国石油长庆油田分公司勘探事业部,陕西 西安 710018 中国石油长庆油田分公司第一采油厂,陕西 延安 716000
关键词:
有机相烃源岩地球化学灵峰组丽水凹陷
分类号:
TE122.113
文献标志码:
A
摘要:
有机相是圈定优质烃源岩展布的有效手段之一。对丽水凹陷灵峰组烃源岩进行了大量沉积学以及地球化学的工作,证实其主要形成于海陆过渡相,有机质类型较差。但是,由于该套烃源岩具有沉积厚度大、分布广等特征,使得其在该区域的成烃贡献中不可忽视,因此亟需圈定该区域灵峰组有利供烃的有机相。鉴于此,基于灵峰组烃源岩评价、生源构成以及沉积环境特征,对灵峰组烃源岩平面以及纵向上的有机相特征进行了综合厘定。研究结果表明,灵峰组烃源岩为海陆混源型烃源岩,且从陆向海可依次划分3个有机相:三角洲前缘陆源高碳中氢相(A相),前三角洲混源中碳贫氢相(B相),滨浅海藻源低碳贫氢相(C相);其中A 相优于B相,C相最差;丽水西次凹北部灵下段主要发育研究区相对最优的A相,丽水西次凹南部有机相类型组合次之,丽水东次凹有机相类型发育最差。本研究为丽水凹陷灵峰组优质烃源岩的圈定提供了依据,更好地服务于油气资源勘探。此外,在海陆过渡相圈定有利有机相的方法可以推广到其他类似盆地。

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更新日期/Last Update: 2026-03-25