石油与天然气地质 ›› 2004, Vol. 25 ›› Issue (6): 656-658.doi: 10.11743/ogg20040611

• 油气地质 • 上一篇    下一篇

东营凹陷沙河街组一段沉积时期的湖泊古生产力

李守军1,2, 王纪存3, 郑德顺4, 焦叶红1,2, 王金香1,2, 李学艳4   

  1. 1. 山东科技大学,山东青岛 266510;
    2. 山东省油气勘探开发工程技术研究中心,山东青岛 266510;
    3. 山东省地质调查院,山东济南 250013;
    3. 石油大学,山东东营 257061
  • 收稿日期:2004-09-26 出版日期:2004-12-25 发布日期:2012-01-16
  • 基金项目:

    国家"十五"重大科技攻关项目"济阳坳陷古近纪古湖泊学特征研究"(2001BA60509-14)

Study on palaeo-productivity of the lake during the deposition of the 1st member of Shahejie Formation in Dongying sag

Li Shoujun1,2, Wang Jicun3, Zheng Deshun4, Jiao Yehong1,2, Wang Jinxiang1,2, Li Xueyan 4   

  1. 1. Shandong University of Science and Technology, Qingdao, Shandong;
    2. Shandong Research Center of Petroleum E & P Engineering Technology, Qingdao, Shandong;
    3. Shandong Institute of Geological Investigation, Jinan, Shandong;
    4. University of Petroleum, Dongying, Shandong
  • Received:2004-09-26 Online:2004-12-25 Published:2012-01-16

PDF (PC)

650

被引次数

13

摘要：

根据有机碳法计算湖泊古生产力的公式计算了东营凹陷沙河街组一段数百口井的古生产力值,做出了古生产力平面分布图,并与沙河街组三段沉积时期的古生产力以及现代不同营养类型湖泊的生产力进行了比较。研究表明,沙河街组三段中、下亚段和沙河街组一段沉积时期东营凹陷为超营养湖泊,是最有利于生油的湖泊;沙河街组三段上亚段沉积时期为富营养湖,也具有一定的生油能力。按生油岩的优劣程度排序,依次为沙河街组三段下亚段、沙河街组一段、沙河街组三段中亚段、沙河街组三段上亚段。

关键词: 古生产力, 湖泊, 东营凹陷, 沙河街组一段

Abstract:

Palaeo productivity values of the 1st member of Shahejie Formation encountered in hundreds of wells in Dongying sag have been calculated with the formula of lake's productivity based on organic carbon method. The conture map shows the distribution of paleo productivity of the lake during the deposition of the 1st member of Shahejie Formation. These values are then compared with those of the 3rd member of Shahejie Formation, as well as with those of modern lakes having different nutrition types. The study indicates that Dongying sag was a super eutrophic lake during the deposition of the middle and low intervals of the third member and the first member of Shahejie Formation, which would be the most favorable for oil generation. The sag was a eutrophic lake during the deposition of the upper interval of the third member of Shahejie Formation, which also had certain capacity of oil generation. The quality of source rocks degrades in a sequence from the low interval of the 3rd member to the 1st member, the middle interval and the upper interval of the 3rd member of Shahejie Formation.

Key words: palaeo productivity, lake, Dongying sag, 1st member of Shahejie Formation

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