J4 ›› 2010, Vol. 40 ›› Issue (4): 912-920.

• 会议专栏 • 上一篇    下一篇

英台断陷深层的气源条件及勘探潜力

卢双舫1|胡慧婷1|刘海英1|邵明礼2|王立武2|张世广1|黄文彪1|仲维维1|吴高平1   

  1. 1.大庆石油学院 地球科学学院| 黑龙江 |大庆 163318;
    2.吉林油田有限责任公司 勘探开发研究院|吉林 松原 138000
  • 收稿日期:2009-09-13 出版日期:2010-07-26 发布日期:2010-07-26
  • 作者简介:卢双舫(1962-)|男|湖北天门人|教授|博士生导师,主要从事油气地球化学和油气地质学方面的研究和教学工作,Tel: 0459-6503332|E-mail:lushuangfang@qq.com
  • 基金资助:

    国家“973”计划项目(2009CB219306);教育部新世纪优秀人才支持计划项目(NCET-04-0345)

Gas Source Conditions and Exploration Potential of Deep Layer in Yingtai Fault Depression

LU Shuang-fang1, HU Hui-ting1, LIU Hai-ying1, SHAO Ming-li2, WANG Li-wu2, ZHANG Shi-guang1, HUANG Wen-biao1, ZHONG Wei-wei1, WU Gao-ping1   

  1. 1.College of Earth Sciences, Daqing Petroleum Institute, Daqing, Heilongjiang 163318, China;
    2. Exploration and Development Research Institute, Jilin Oil Field Company, Ltd., PetroChina, Songyuan,Jilin 138000,China
  • Received:2009-09-13 Online:2010-07-26 Published:2010-07-26

摘要:

为了评价和认识天然气勘探已获重大突破的松辽盆地深层中部断陷带之外断陷的勘探潜力,利用龙深1井风险探井的分析资料,从定性评价和定量计算的结合上,对英台断陷的气源条件和勘探潜力进行了系统研究。结果表明:英台断陷深层营城组、沙河子组不仅暗色泥岩较为发育、残余有机质丰度较高、有机质普遍处于有利于大量成气的高-过成熟阶段,而且有机质类型并不像前人认为的那样以III型有机质为主,而是以绝对成气潜力更高的Ⅱ1、Ⅱ2型为主,这进一步提高了深层断陷的成气潜力;恢复之后的有机质原始丰度和原始生烃潜力更高,体现了恢复对客观评价高-过成熟源岩的重要意义;初步的定量评价表明,英台断陷的天然气资源量为(938~3 758)×108 m3,具有形成大中型气田(群)的气源条件。这也可能意味着松辽盆地除了中部的徐家围子和长岭断陷之外,其它断陷也具备值得重视、探索的勘探潜力。

关键词: 英台断陷, 气源条件, 勘探潜力, 有机碳原始丰度, 原始生烃潜力

Abstract:

In order to evaluate and recognize the exploration potential of fault depressions except for the middle part fault depression where had a great breakthrough,the geological and geochemical data from the risk exploration well-Longshen 1, qualitative appraisement and quantitative calculation method are used to study gas source conditions and the exploration potential of Yingtai fault depression. This research indicates that dark mudstones of K1yc and K1sh layers are relatively development and the residual organic carbon content is relatively higher, and the organic matter is mainly at high-to over-mature evolution stage, especially with type Ⅱ1 and Ⅱ2 organic matter which have a higher gas generation potential, other than the type III organic matter accepted by predecessor. All above evidence hints there is a better exploration potential in deep fault depression. Meanwhile, the original carbon content and hydrocarbon potential of organic matter are much higher than present values, which indicate the signification of restitution for the objective appraisement of high-over-mature source rock. Quantitative appraisement preliminarily reveals that the gas resource of Yingtai fault depression is ranger from 93.8 to 375.8 billion cubic meters, where has a gas source condition for forming medium to large-sized gas fields or groups. It also means that some fault depressions have important and exploratory exploration potential, besides Xujiaweizi and Changling fault depression.

Key words: Yingtai fault depression, gas source conditions, exploration potential, original abundance of organic carbon, original hydrocarbon potential

中图分类号: 

  • P618.13
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