新疆石油地质 ›› 2010, Vol. 31 ›› Issue (2): 205-207.

• 讨论与争鸣 • 上一篇    下一篇

乌尔禾油田下乌尔禾组凝灰质碎屑岩成因探讨

张有平, 宫清顺, 刘静, 芦淑萍, 丁粱波   

  1. 中国石油 新疆油田分公司 勘探开发研究院,新疆 克拉玛依 834000
  • 收稿日期:2009-11-24 修回日期:2009-12-22 发布日期:2020-09-17
  • 作者简介:张有平(1963-),男,山东寿光人,高级工程师,硕士,石油地质,(Tel)0990-6892076(E-mail)zhangyouping@petrochina.com.cn.

Origin of Tuffaceous Clastic Rocks of Lower Wuerhe Formation in Wuerhe Oil Field

ZHANG You-ping, GONG Qing-shun, LIU Jing, LU Shu-ping, DING Liang-bo   

  1. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
  • Received:2009-11-24 Revised:2009-12-22 Published:2020-09-17

摘要: 乌尔禾油田中二叠统下乌尔禾组局部发育一套特殊的凝灰质碎屑岩,岩石类型包括火山灰凝灰岩、沉凝灰岩以及凝灰质砂砾岩,其电测曲线呈现高电阻率、低声波时差的特征。根据对岩心、铸体薄片、测井和地震资料综合分析,认为凝灰质碎屑岩为封闭-半封闭的咸化碱性湖湾环境下火山灰与正常碎屑物混合堆积而成,储集层具有双重孔隙介质特征。

关键词: 准噶尔盆地, 西北缘, 乌尔禾油田, 下乌尔禾组, 凝灰质碎屑岩, 湖湾沉积环境

Abstract: A set of special tuffaceous rocks compose of ash tuff, bedded tuff and tuffaceous glutenite is partly developed in the Lower Wuerhe formation of Middle Permian in Wuerhe oil field and characterized by high resistivity and low interval transit time on the electriclog curves. Based on the analysis of core, cast thin section, logging and seismic data, it is considered that the tuffaceous clastic rocks are in closed to semi-closed arm of lake environment that is saline and alkaline and shaped by ash-clastic mixed accumulation. Such a reservoir is of feature of dual porosity media.

Key words: Junggar basin, northwestern margin, Wuerhe oil field, Lower Wuerhe formation, tuffaceous clastic rock, lake-arm sedimentary environment

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