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塔里木盆地顺北地区东西部海相油气成藏差异

漆立新 丁勇

漆立新, 丁勇. 塔里木盆地顺北地区东西部海相油气成藏差异[J]. 石油实验地质, 2023, 45(1): 20-28. doi: 10.11781/sysydz202301020
引用本文: 漆立新, 丁勇. 塔里木盆地顺北地区东西部海相油气成藏差异[J]. 石油实验地质, 2023, 45(1): 20-28. doi: 10.11781/sysydz202301020
QI Lixin, DING Yong. Differences in marine hydrocarbon accumulation between the eastern and western parts of Shunbei area, Tarim Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2023, 45(1): 20-28. doi: 10.11781/sysydz202301020
Citation: QI Lixin, DING Yong. Differences in marine hydrocarbon accumulation between the eastern and western parts of Shunbei area, Tarim Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2023, 45(1): 20-28. doi: 10.11781/sysydz202301020

塔里木盆地顺北地区东西部海相油气成藏差异

doi: 10.11781/sysydz202301020
基金项目: 

中国石化科技部项目“满加尔坳陷及周缘下古生界油气成藏条件与选区评价” P20063-1

详细信息
    作者简介:

    漆立新(1962-), 男, 博士, 教授级高级工程师, 从事油气勘探综合研究与部署。E-mail: qilixin2006@sina.com

  • 中图分类号: TE122.3

Differences in marine hydrocarbon accumulation between the eastern and western parts of Shunbei area, Tarim Basin

  • 摘要: 塔里木盆地顺北地区东西部海相油气成藏差异明显,自东向西油气主要表现为由富到贫,勘探风险明显加大。通过对满加尔坳陷西缘的顺北东部和阿瓦提坳陷东缘的顺北西部油气成藏的分析,对比海相油气成藏条件的差异性,明确二者成藏差异的原因。以顺北1、4、8号断裂带东北段为代表的顺北东部近年来不断获得高产,油气多期成藏,油气富集特征明显;但阿瓦提坳陷东缘的顺北西部钻探结果不理想,表现为以早期成藏为主,且油气成藏规模不大。顺北东西部存在烃源层分布条件、生烃演化史、烃源资源规模、成藏期及成藏模式等差异,主要表现为东部多源多期成藏和西部单源单期成藏。顺北东部紧邻满加尔生烃坳陷区,长期处于四源供烃条件,属于多源多期成藏;而顺北西部要么是本地的寒武系玉尔吐斯组烃源岩早期成藏,要么是阿瓦提坳陷奥陶系烃源岩晚期成藏,属于单源单期成藏。阿瓦提东缘英买力油田及近年来英西1井奥陶系的突破表明,阿瓦提海相油气以海西晚期成藏为主,喜马拉雅期成藏为辅。阿瓦提坳陷周缘烃源岩发育相对较差,海相油气藏分布局限,油气资源规模也有限。

     

  • 图  1  塔里木盆地研究区位置及顺北东、西部划分示意

    Figure  1.  Tectonic units of Tarim Basin and division between eastern and western parts of Shunbei area

    图  2  塔里木盆地阿瓦提坳陷东缘—满加尔坳陷西缘油气分布示意

    Figure  2.  Oil and gas distribution from eastern margin of Awati Depression to western margin of Manjiaer Depression, Tarim Basin

    图  3  塔里木盆地顺北地区不同断裂带上的油气性质变化

    Figure  3.  Changes of oil and gas properties in different fault zones, Shunbei area, Tarim Basin

    图  4  塔里木盆地顺北西部奥陶系油气成藏史

    Figure  4.  History of hydrocarbon accumulation in Ordovician, western Shunbei area, Tarim Basin

    图  5  塔里木盆地英买力北区油气分布剖面

    Figure  5.  Profile showing oil and gas distribution in northern Yingmaili area, Tarim Basin

    图  6  塔里木盆地英买2井区奥陶系油气甾、萜烷特征

    Figure  6.  Characteristics of steroids and terpenes of Ordovician oil and gas in Yingmai 2 well zone, Tarim Basin

    图  7  塔里木盆地阿瓦提—满加尔坳陷油气系统及油气充注示意

    Figure  7.  Oil and gas system and charging in Awati and Manjiaer depressions, Tarim Basin

    图  8  塔里木盆地顺北地区东西向大剖面

    剖面位置见图 7

    Figure  8.  EW profile of Shunbei area, Tarim Basin

    图  9  塔里木盆地寒武系玉尔吐斯组烃源岩不同相带发育对比示意

    Figure  9.  Development of Cambrian Yurtus source rocks in different facies zones, Tarim Basin

    图  10  塔里木盆地阿瓦提坳陷奥陶系烃源岩相带

    Figure  10.  Depositional facies for Ordovician source rocks in Awati Depression, Tarim Basin

    图  11  塔里木盆地寒武系玉尔吐斯组烃源岩不同期成熟演化

    Figure  11.  Maturities of Cambrian Yurtus source rocks in different stages, Tarim Basin

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  • 收稿日期:  2022-06-12
  • 修回日期:  2022-12-10
  • 刊出日期:  2023-01-28

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