天然气地球科学

• 天然气地质学 • 上一篇    下一篇

准噶尔盆地北三台凸起二叠系梧桐沟组一段碎屑岩储层特征及控制因素

王国龙,杜社宽   

  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.中国科学院大学,北京100049
  • 收稿日期:2018-02-02 修回日期:2018-04-06 出版日期:2018-05-10 发布日期:2018-05-10
  • 通讯作者: 杜社宽(1963-),男,河南许昌人,副研究员,博士,主要从事地震资料解释与沉积储层研究. E-mail:dsk@petrochina.com.cn.
  • 作者简介:王国龙(1991-),男,甘肃兰州人,硕士研究生,主要从事油气地球物理和石油地质研究.E-mail:wangguolong16@mails.ucas.ac.cn.
  • 基金资助:

    甘肃省重点实验室专项(编号:1309RTSA041)资助.

Clasolite reservoir characteristics and controlling factors of the 1st member of Permain Wutonggou Formation in Beisantai Uplift,Junggar Basin

Wang Guo-long,Du She-kuan   

  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.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2018-02-02 Revised:2018-04-06 Online:2018-05-10 Published:2018-05-10

摘要:

通过岩石铸体薄片鉴定、扫描电镜和X-射线衍射等技术手段,研究了准噶尔盆地北三台凸起二叠系梧桐沟组一段碎屑岩储层的特征,分析了储层物性的控制因素。结果表明:北三台凸起二叠系梧桐沟组一段储层以岩屑砂岩为主,碎屑成分主要为火成岩岩屑,具有低成分成熟度、较低结构成熟度等特征;储层类型为中孔低渗型,主要发育粒间溶孔,孔隙大小中等,喉道偏细。沉积相是影响研究区内储层物性的基本因素,控制着储层物性的横向展布;压实作用是研究区内对储层物性破坏性最强的成岩作用,是使储层物性损失的主要因素;胶结作用是使储层物性损失的次要因素;溶蚀作用是研究区内主要的建设性成岩作用,是影响北三台凸起梧桐沟组一段碎屑岩储层物性的主要因素。

关键词: 储层特征, 控制因素, 梧桐沟组一段, 北三台凸起, 准噶尔盆地

Abstract:

Based on casting observation,SEM and X-ray diffraction,this paper studies the clastic reservoir characteristics of the 1st member of Wutonggou Formation,Beisantai Uplift,Junggar Basin and analyzes the controlling factors of the reservoir physical properties.The research shows that the sandstone reservoir of the 1st member of Wutonggou Formation mainly consists of volcanic rock debris with low compositional maturity and textural maturity.The reservoir was characterized by medium porosity,low permeability,medium pore volume and fine throat.The sedimentary facies is the main controlling factor in the study area,controls the transverse distribution of the reservoir physical properties.Compaction is the most important destructive diagenesis as well as the main factor that makes the reservoir physical properties worse.Cementation is the secondary factors that make the reservoirs physical properties worse.Dissolution is the main constructive factor that influences the reservoir physical properties in the study area.

Key words: Reservoir characteristics, Controlling factors, The 1st  member of Wutonggou Formation, Beisantai Uplift, Junggar Basin

中图分类号: 

  • TE121.3

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