石油与天然气地质 ›› 2010, Vol. 31 ›› Issue (1): 91-97.doi: 10.11743/ogg20100115

• 外围探区 • 上一篇    下一篇

准噶尔盆地北部古生代构造演化与石炭系烃源岩

余腾孝1, 曹自成1, 徐勤琪1, 潘泉涌1, 薛会2, 刘士林2, 解国军2   

  1. 1. 中国石油化工股份有限公司, 西北油田分公司, 石油勘探开发研究院, 新疆, 乌鲁木齐, 830011;
    2. 中国石油化工股份有限公司, 石油勘探开发研究院, 西北勘探中心, 北京, 100083
  • 收稿日期:2009-09-27 出版日期:2010-02-25 发布日期:2012-01-16
  • 基金项目:

    中石化勘探先导项目(2009KTXD04)

The Paleozoic tectonic evolution and the Carboniferous source rocks in the northern Juggar Basin

Yu Tengxiao1, Cao Zicheng1, Xu Qinqi1, Pan Quanyong1, Xue Hui2, Liu Shilin2, Xie Guojun2   

  1. 1. Research Institute of Petroleum Exploration and Development, SINOPEC Northwest Company, Urumqi, Xinjiang 830011, China;
    2. Northwest Branch of SINOPEC Petroleum Exploration & Production Research Institute, Beijing 100083, China
  • Received:2009-09-27 Online:2010-02-25 Published:2012-01-16

摘要:

在准噶尔北部地区断裂演化的基础上,将北部地区震旦纪—石炭纪的构造演化划分为两个阶段:①震旦纪—中奥陶世洋盆扩张阶段;②晚奥陶世—石炭纪洋盆俯冲、地体拼接阶段。石炭纪准噶尔盆地北部地区处于半深海-浅海、海-陆过渡环境,具备烃源岩发育条件。钻井和露头揭示,石炭系发育上、下石炭统两套烃源岩。油-源对比分析和构造演化研究表明,伦5井、滴北1井油气主要来源于乌伦古坳陷石炭系。

关键词: 构造演化, 烃源岩, 古生界, 乌伦古坳陷, 准噶尔盆地北部

Abstract:

The tectonic evolution history of the Northern Junggar Basin from the Sinian to the Carboniferous can be divided into two stages based on study of its fault evolution.The first is ocean basin spreading stage from the Sinian to the Middle Ordovician and the second is ocean basin subduction and plate suturing stage from the Late Ordovician to the Carboniferous.During the Carboniferous,the northern Junggar Basin was in bathyal-shallow marine and ocean-continent transitional environments,and therefore was suitable for the development of source rocks.Drilling data and field outcrops reveal that there are two sets of source rocks developed in the Lower and Upper Carboniferous respectively.Oil-source correlation and tectonic evolution analysis suggest that the oil/gas of the Lun-5 and DB-1 wells are mainly derived from the Carboniferous source rocks in the Wulungu depression.

Key words: tectonic evolution, source rock, Paleozoic, Wulungu Depression, northern Junggar Basin

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