中国石油勘探 ›› 2025, Vol. 30 ›› Issue (3): 1-24.DOI: 10.3969/j.issn.1672-7703.2025.03.001

• 勘探战略 •    下一篇

准噶尔盆地深层油气勘探新领域认识与启示

支东明1,何文军2,谢安1,李梦瑶2,刘寅3,曹剑4   

  1. 1怀柔实验室新疆研究院;2中国石油新疆油田公司勘探开发研究院; 3 中国石油大学(华东)深层油气重点实验室;4 内生金属矿床成矿机制研究国家重点实验室(南京大学)
  • 出版日期:2025-05-15 发布日期:2025-05-15
  • 通讯作者: 谢安(1989-),男,四川南充人,本科,2011年毕业于中国石油大学(华东),高级工程师,主要从事油气地质综合研究与科研管理工作。地址:新疆乌鲁木齐市新市区北京中路 666号,邮政编码:830000。
  • 作者简介:支东明(1971-),男,上海人,硕士,2009年毕业于西南石油大学,教授级高级工程师,主要从事油气地质综合研究与勘探管理工作。地址:新疆乌鲁木齐市新市区北京中路 666 号,邮政编码:830000。
  • 基金资助:
    新疆维吾尔自治区天山英才—科技创新领军人才支持项目“北疆地区二叠系超级盆地全油气系统地质理论研究与战略接替领域优选”(2022TSYCLJ0070);中国石油天然气股份有限公司前瞻性基础性研究重大科技项目“准噶尔盆地二叠系全油气系统地质理论与勘探实践”(2022DJ0108);泰山学者青年专(tsqn202312121)

Recognition and enlightenments of new oil and gas exploration fields in deep formations in Junggar Basin

Zhi Dongming1,He Wenjun2,Xie An1,Li Mengyao2,Liu Yin3, Cao Jian4   

  1. 1 Xinjiang Research Institute of Huairou Laboratory; 2 Research Institute of Exploration & Development, PetroChina Xinjiang Oilfield Company; 3 State Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China); 4 State Key Laboratory of Research on Metallogenic Mechanism Endogenetic Mental Deposits, (Nanjing University)
  • Online:2025-05-15 Published:2025-05-15

摘要: 含油气盆地深层已经成为油气勘探的现实接替领域。准噶尔盆地演化历史长、构造背景复杂,基于近年来的新发现,对盆地深层油气勘探新领域进行了预测。研究认为,准噶尔盆地深层—超深层具有原型海相盆地油气、西部坳陷二叠系风城组源内非常规油气藏、富烃凹陷大型地层油气藏及南缘前陆冲断带侏罗系—白垩系构造油气藏四大勘探新领域。原型海相盆地油气受石炭系多沉积中心分散展布的烃源岩控制,可以围绕各自烃源灶形成相对独立的全油气系统。西部坳陷二叠系风城组源内具有常规—非常规油气藏有序聚集的成藏规律,南部盆1井西—沙湾凹陷深层是寻找万亿立方米大气区的现实领域。富烃凹陷深层受古地貌与湖平面联合控制,形成大型地层圈闭,凹槽区可以形成集群式规模油气藏。南缘前陆冲断带侏罗系—白垩系发育大型构造圈闭,8000m以下超深层仍发育规模优质储层,具备形成大规模天然气藏的地质条件。对这四大领域的分析认为,准噶尔盆地已经进入以深层勘探为主的新阶段,油气资源普遍表现为常规—非常规有序共生的特征,优质的烃源岩和有效的成藏要素为盆地深层油气富集提供了坚实的物质基础和有利的成藏条件。

关键词: 准噶尔盆地, 深层—超深层, 成藏条件, 全油气系统, 勘探实践

Abstract: The deep formations in petroliferous basins have become a practical field for petroleum exploration. Junggar Basin is characterized by long tectonic evolution history and complex geological settings. Based on the exploration achievements in recent years, the new exploration fields in deep formation have been predicted, which indicates that there are four new exploration fields in the deep to ultra-deep formations, including prototype marine basin oil and gas reservoirs, intra source rock unconventional oil and gas reservoirs in the Permian Fengcheng Formation in Western Depression, large-scale stratigraphic oil and gas reservoirs in hydrocarbon-rich sags, and Jurassic–Cretaceous structural oil and gas reservoirs in the southern marginal foreland thrust belt. For prototype basin oil and gas reservoirs, controlled by the scattered source rocks in multiple depo-centers in the Carboniferous, relatively independent whole petroleum system can be formed in these source kitchens. Intra source rock oil and gas reservoirs in the Permian Fengcheng Formation in Western Depression showed a hydrocarbon accumulation pattern of orderly distribution of conventional–unconventional resources. The deep formation in Pen 1 Well West–Shawan Sag is a practical field for discovering a large gas zone with resources of trillion cubic meters. In hydrocarbon-rich sags, jointly controlled by paleogeomorphology and lake level, large-scale stratigraphic traps were formed in deep formations, and the clustered oil and gas reservoirs in trough areas are favorable targets. The large-scale structural traps were formed in the Jurassic-Cretaceous in the southern marginal foreland thrust belt, and high-quality reservoirs can still be developed below 8000 m, possessing the geological conditions for forming large-scale gas reservoirs. The study shows that the petroleum exploration in Junggar Basin has entered a new stage focusing on deep formations, generally exhibiting the coexistence of conventional–unconventional oil and gas reservoirs in sequence. The high-quality source rocks and effective hydrocarbon accumulation factors provided a solid material basis and favorable conditions for deep oil and gas reservoirs in the basin.

Key words: Junggar Basin, deep to ultra-deep formation, hydrocarbon accumulation condition, whole petroleum system, exploration practice

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