天然气地球科学

• 天然气地球化学 • 上一篇    下一篇

柴达木盆地苏探1井原油生物标志化合物特征和成藏分析

孙敏卓,张鹏,周莉,刘海珍,李国艳,陈建州,谭和勇,房嬛,王国仓   

  1. 1.甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室,甘肃 兰州 730000;
    2.中国石油青海油田勘探开发研究院,甘肃 敦煌736202;
    3.青海省第四地质矿产勘查院,青海 西宁 810029;4.河南省地质调查院,河南 郑州 450001
  • 收稿日期:2014-02-13 修回日期:2014-12-03 出版日期:2015-05-10 发布日期:2015-05-10
  • 通讯作者: 王国仓(1978-),男,甘肃秦安人,助理研究员,博士,主要从事油气储层地质研究.E-mail:408535603@qq.com.
  • 作者简介:孙敏卓(1979-),女,陕西岐山人,助理研究员,博士,主要从事实验地球化学和油气地球化学研究.E-mail:sunmz04@sina.com.
  • 基金资助:

    国家科技重大专项(编号:2011ZX05005-001)|国家重点基础研究发展计划(编号:2012CB214801);国家自然科学基金(编号:41272207);中国科学院先导专项(编号:XDA05130402);甘肃省重点实验室专项(编号:1309RTSA041)联合资助.

Biomarker Characteristics and Oil Accumulation Period of Well Sutan 1 in the Qaidam Basin

SUN Min-zhuo,ZHANG Peng,ZHOU Li,LIU Hai-zhen,LI Guo-yan,CHEN Jian-zhou,TAN He-yong,FANG Xuan,WANG Guo-cang   

  1. 1.Key Laboratory of Petroleum Resources,Gansu Province/Key Laboratory of Petroleum Resources Research,
    Institute of Geology and Geophysics,Chinese Academy of Sciences,Lanzhou 730000,China;
    2.PetroChina Qinhai Oilfield Research Institute of Exploration & Development,Dunhuang 736202,China;
    3.The Fourth Institute Geologica and Mineral Survey of Qinghai,Xining 810029,China;
    4.Henan Institute of Geological Survey,Zhengzhou 450001,China
  • Received:2014-02-13 Revised:2014-12-03 Online:2015-05-10 Published:2015-05-10

摘要:

通过对苏探1井(2 536.5~2 697.0m)储层流体包裹体分析,结合该段原油的生物标志化合物特征,对其油藏的形成进行了研究。结果表明:苏探1井(2 536.5~2 697.0m)原油的演化程度较高|其母质类型主要为陆源高等植物,其中在埋藏深度为2 620.67m、3 640.57m和2 697m的原油中有过母质来源为水生生物的原油充注;形成于淡到微咸水的弱氧化到偏氧化环境。苏探1井(2 536.5~2 697.0m)储层至少发生过3期不同成熟度的原油充注,以及一期天然气充注;该段储层为2期成藏,第一期成藏时间为142Ma左右,第二期成藏时间为107Ma左右,为早白垩世晚期燕山运动的构造回返期。

关键词: 柴达木盆地, 苏探1井, 生物标志化合物, 包裹体

Abstract:

According to some geological and geochemical data of well Sutan 1 of depth from 2 536.5m to 2 697.0m,including the homogenization temperature of fluid inclusion and the geochemical characteristics of crude oil,the hydrocarbon accumulation history of the studied region was analyzed.The result shows that the crude oil has the properties of high evolution degree with well Sutan 1.The precursor type is mainly high terrestrial plants.Among them three crude oils from depth of 2 620.67m,3 640.57m and 2 697m have been charged with crude oil with aquatic organism.And the crude oil has deposited in weak oxidizing to oxidizing environment with fresh to slight saline water,which is better for preservation and transformation of organics.The characteristics of fluid inclusion with well Sutan 1 show that there are at least three times of filling of oil and one time of filling of gas.And two periods of petroleum accumulation existed in the crude oil of well Sutan 1.The reservoir forming time of the first charge with oil is about 142Ma.The reservoir forming time of the second charge with oil is about 107Ma,which is tectonic inversion of the Yanshanian orogenic movement in Late-Early Cretaceous.

Key words: Qaidam Basin, Well Sutan 1, Biomarkers, Inclusion

中图分类号: 

  • TE122.1+13

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