天然气地球科学

• 天然气地质学 • 上一篇    下一篇

鄂尔多斯盆地中—新元古界勘探方向及潜力

郝松立,孙六一,包洪平,刘刚,章贵松   

  1. 中国石油长庆油田分公司勘探开发研究院,陕西 西安710018
  • 收稿日期:2016-05-26 修回日期:2016-07-28 出版日期:2016-12-10 发布日期:2016-12-10
  • 作者简介:郝松立(1986-),男,河北赵县人,工程师,硕士,主要从事天然气勘探生产与综合研究. E-mail:haosl0717@163.com.
  • 基金资助:
    国家科技重大专项(编号:2011ZX05004-006);中国石油勘探与生产分公司项目“鄂尔多斯盆地重点勘探领域综合研究与风险勘探目标优选”联合资助.

Exploration direction and potential of the Middle-Upper Proterozoic in Ordos Basin

Hao Song-li,Sun Liu-yi,Bao Hong-ping,Liu Gang,Zhang Gui-song   

  1. Exploration & Development Research Institute of PetroChina Changqing Oilfield Company,Xi’an 710018,China
  • Received:2016-05-26 Revised:2016-07-28 Online:2016-12-10 Published:2016-12-10

摘要: 鄂尔多斯盆地中—新元古界勘探程度较低,石油地质基础条件认识薄弱,但勘探潜力不容忽视。本着向源勘探的思路,根据空间分布情况,提出鄂尔多斯盆地中—新元古界天然气勘探的3个方向。深部气源方向受目前研究程度的限制,不适合作为现实目标,可作为远景勘探领域;上生气源来自上古生界煤系地层,气源条件良好,埋深相对较浅,是有利的勘探方向,也是勘探部署的重点目标,但勘探表明受构造及煤系地层分布等条件制约,可能成藏范围有限;自生气源成为中—新元古界勘探取得突破的主要方向,由于盆地内钻井资料有限,以周缘地质露头为突破口,发现盆地周缘发育长城系烃源岩,盆地内部也具有发育长城系烃源岩的潜力,结合长城系相对较好的储集条件,认为长城系是自生自储型气藏的主要勘探层系。在明确勘探方向和主要层系的基础上,以寻找盆地内部长城系烃源岩为目标,提出了盆地中部定边—T59井和盆地东南部淳化—洛川2个有利勘探区带。

关键词: 鄂尔多斯盆地, 中—新元古界, 勘探方向, 勘探潜力, 烃源岩

Abstract: The exploration potential of the Middle-Upper Proterozoic in Ordos Basin can’t be neglected,although it is still relatively unexplored.Considering gas sources and stratum distribution,the exploration of Middle-Upper Proterozoic can be divided into three directions.The direction of deep gas source is suited to be explored in the future,because the degree on geological research is low in this field.The direction of shallower gas source is the favorable exploration direction,because the gas source is better and the depth is shallower.However,the accumulation scope of this direction is limited by the scope of Carboniferous-Permiancoal measures strata.The third direction is the most important in which the gas sources is from the Middle-Upper Proterozoic.The Changcheng Formation is the most important target strata,because the source rock of Changcheng Formation has been found on the periphery of Ordos Basin and the reservoir quality of Changcheng Formation is better.Therefore,the areas of Dingbian-T59 and Chunhua-Luochuan are favorable exploration zones for source rocks.

Key words: Ordos Basin, Middle-Upper Proterozoic, Exploration direction, Exploration potential, Source rock

中图分类号: 

  • TE122.2

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