天然气地球科学

• 天然气地质学 • 上一篇    下一篇

准噶尔盆地中拐—五区二叠系不整合面对油气成藏控制作用

韩宝,王昌伟,盛世锋,庞燕青   

  1. 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;
    2.中国石油新疆油田分公司油藏评价处,新疆 克拉玛依 834000;
    3.中国石油新疆油田分公司低效油田开发公司,新疆 克拉玛依 834000
  • 收稿日期:2017-06-09 修回日期:2017-08-15 出版日期:2017-12-10 发布日期:2017-12-10
  • 作者简介:韩宝(1984-),男,宁夏灵武人,工程师,主要从事石油地质综合研究.E-mail:hanbao@petrochina.com.cn.
  • 基金资助:
    国家自然科学基金项目(编号:41502126)资助.

Controls of the permian unconformity on reservoir formation in Zhongguai-District 5 area of Junggar Basin

Han Bao,Wang Chang-wei,Sheng Shi-feng,Pang Yan-qing   

  1. 1.Research Institute of Exploration and Development ,Xinjiang Oilfield Company,PetroChina,Karamay  834000,China;
    2.Department of Reservoir Evaluation,Xinjiang Oilfield Company,PetroChina,Karamay 834000,China;3.Inefficient Oilfield Development Company,Xinjiang Oilfield Company,PetroChina,Karamay 834000,China
  • Received:2017-06-09 Revised:2017-08-15 Online:2017-12-10 Published:2017-12-10

摘要: 在中拐—五区二叠系内部不整合面上下发现众多油气藏,表明不整合面对该区油气成藏起重要控制作用。通过对不整合面上下地层接触关系分析,认为不整合面类型为削蚀—超覆型,垂向上属2层结构,并归纳了不整合面上下油气藏主要发育8种类型。根据对不整合面结构、储盖组合及构造特征研究,指出不整合面之上的上乌尔禾组连片分布的砂砾岩及砂岩不仅与众多断裂构成了油气网毯式运移的主力通道,也是重要的油气富集场所,聚集了源于风城组的2期油气,形成了数量众多的油藏;不整合面之下地层油气疏导能力偏弱,由于天然气对油气通道要求相对低,因此,不整合面之下的佳木河组为气藏形成的主力层系,多数气藏离不整合面很近,少数为内幕型气藏。

关键词: 中拐—五区, 二叠系, 不整合面, 油气成藏

Abstract: Many oil and gas reservoirs have been found above or below the Permian unconformity in Zhongguai-District 5 area of Junggar Basin,indicating that the unconformity controls reservoir formation.The unconformity is considered truncation-overlap type based on the analysis of the contact relation between the upper and lower of unconformity,and belongs to two-layer structure;in general the unconformity reservoirs mainly developed 8 types.Based on the unconformity structure,reservoir-cap rock assemblage and structural feature,above the unconformity,the upper Wuerhe’s sandy conglomerate and sandstone distributed widely,not only the main channel of oil and gas meshwork-carpet migration,but also the important enriched oil site,gathered two stages of oil and gas from Fengcheng Formation,and formed many reservoirs;the stratum below unconformity has weakly transport capacity,and because the natural gas on the channel requirements are relatively low,therefore,under the unconformity of the Jiamuhe is the main formation of gas reservoirs.Most gas reservoirs are close to the unconformity,only a few are inside gas reservoirs.

Key words: Zhongguai-District 5 area, Permian, Unconformity, Reservoir forming

中图分类号: 

  • TE122.1

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