新疆石油地质

新疆石油地质 ›› 1992, Vol. 13 ›› Issue (4): 339-350.

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塔里木盆地西南坳陷生油岩评价和勘探方向

杨斌, 刘勇   

  1. 新疆石油管理局勘探开发研究院 克拉玛依 834000
  • 收稿日期:1991-10-10 出版日期:1992-12-01 发布日期:2020-07-23

SOURCE ROCK EVALUATION OF SOUTHWEST DEPRESSION IN TARIM BASIN AND ITS PROSPECTING DIRECTION

Yang Bin, Liu Yong   

  1. Research Institute of Exploration & Development,Xinjiang Petroleum Administration Bureau,Karamay 834000
  • Received:1991-10-10 Online:1992-12-01 Published:2020-07-23

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摘要： 塔里木盆地西南坳陷是盆地的主要油气探区之一。本文从沉积特征、有机质的丰度、类型、成熟度和热演化特征诸方面对该区的石炭系—下二叠统、中、下侏罗统、上白垩统—下第三系及中新统生油岩进行了评价。指出石炭系—下二叠统是一套较好的生油岩,生油潜力大,虽在大部分地区处于高成熟阶段,但在色力布亚大断裂下盘、麦盖提斜坡上倾方向却处于未成熟—低成熟阶段,应作为近期勘探的主攻方向;中、下侏罗统是一套现实的生油层,具有一定的潜力;上白垩统一下第三系属生油潜力差的生油岩;中新统属较差的生油岩—非生油岩。

关键词: 塔里木盆地, 西南坳陷, 生油岩评价, 勘探方向

Abstract: The southwest depression in Tarim Basin is one of principal prospect area in it. This paper presents the source rock evaluation of its Carboniferous—Lower Permian,Middle—Lower Jurassic,Upper Cretaceous—Paleogene and Miocene layer by layer,with respect to sedimentary characteristic,abundance and type of organic matter,maturity and thermal alteration etc,It is recognized that the Carboniferous—Lower Permian could be a sequence of good source rocks with better source potentialities,In spite of reaching highly matured stage for mast part of the area,there has still been in non—mature to low mature stages near foot wall of Selibuya fault and upward Maigaiti stope. These should be as main targets for mate recent prospecting,of which the Middle-Lower Jurassic be a real source rock with some source potentialities; the Upper Cretaceous—Paleogene a source rock with poor ones; while the Miocene a more poor source rock to non--source rock.

Key words: Tarin Basin, Southwest depression, Source rock evaluation, Exploration direction