天然气地球科学

• 天然气地质学 • 上一篇    下一篇

华北南缘东部新元古界冰碛砾岩层系中优质烃源岩的发现及地质意义

秦胜飞,罗平,王铜山,王蓝军,马奎   

  1. 中国石油勘探开发研究院, 北京 100083
  • 收稿日期:2017-11-12 修回日期:2017-12-25 出版日期:2018-01-10 发布日期:2018-01-10
  • 作者简介:秦胜飞(1969-),男,安徽五河人,高级工程师,博士,主要从事天然气地质与地球化学、油气成藏等研究.E-mail:qsf@petrochina.com.cn.
  • 基金资助:
    中国石油天然气股份有限公司科技项目(编号:2014B-0608);中国石油勘探开发研究院科学研究与技术开发项目(编号:2015yj-09); “十三五”国家科技重大专项(编号:2016ZX5004)联合资助.
     

Discovery and geological significance of high quality hydrocarbon source rocks in interglacialof Neoproterozoic in the eastern part of southern margin of North China

Qin Sheng-fei,Luo Ping,Wang Tong-shan,Wang Lan-jun,Ma Kui   

  1. Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China
  • Received:2017-11-12 Revised:2017-12-25 Online:2018-01-10 Published:2018-01-10

摘要:

华北陆块南缘普遍发育新元古界震旦系冰碛砾岩,但冰碛砾岩之间是否发育有效烃源岩目前还难以确定。针对当前的华北南缘新元古界间冰期烃源岩研究空白,对华北南缘冰碛砾岩发育特征进行了系统的观察和测量,划分出4套冰碛砾岩,冰碛砾岩之间发育3套灰黑色页岩,自上而下厚度分别为36m、46m和7m。研究表明,这3套页岩有机质丰度都较高,属于优质烃源岩,有机质来自低等生物。华北南缘震旦系冰碛砾岩分布广泛,砾岩中的厚层优质烃源岩发现不仅有望开拓常规天然气新的勘探领域,也为页岩气的勘探提供了有力依据;烃源岩层以及砾岩中坠石的发现,是冰川成因的有力证据,对目前争议较大的该砾岩的成因研究也有重要指导意义。
 
 

关键词: 华北南缘, 新元古界, 冰碛砾岩, 烃源岩, 意义

Abstract:

Conglomerate of glacial deposits from Neoproterozoic Sinian is generally developed in the southern margin of North China plate.However,whether the hydrocarbon source rock exists in conglomerate of glacial deposits is still unable to determine,which has not been studied.The developmental characteristics of the conglomerate was systematically observed and measured,then the conglomerate was divided into 4 sets and the grey black shale were discovered between them with the thickness of 36m,46m and 7m,respectively from top to bottom.The study shows that the abundance of organic matter in the shale is high,which belongs to the high-quality hydrocarbon source rock.The organic matters are derived from lower organisms.The discovery of thick and high-quality hydrocarbon source rocks in conglomerates opens up new exploration areas for conventional natural gas as well as provides a powerful basis for shale gas exploration.The dropstones appeared in hydrocarbon source rocks and conglomerates are cogent evidence of glaciation and provide an important guiding significance for the genesis of the conglomerate.

Key words: Southern margin of North China plate, Neoproterozoic, Moraine conglomerate, Hydrocarbon source rocks, Significance

中图分类号: 

  • TE122.1

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