南京大学学报(自然科学版) ›› 2012, Vol. 48 ›› Issue (3): 308–315.

• • 上一篇    下一篇

 山东东营凹陷砂岩中NaCI - CaCl2 - H2 O体系
包裹体的发现及其意义*

 石砒石1,2,解宝玉2,孟凡巍3 **
  

  • 出版日期:2015-06-13 发布日期:2015-06-13
  • 作者简介: (1.中国石油大学(北京),北京,102249;2.中国石化胜利油田地质科学研究院,东营,257015;
    3.中国科学院南京地质占生物研究所,南京,210008)
  • 基金资助:
     973”项日(2011CB40300),国家自然科学基金(40703018,4117305,J0930006)

 The occurrence of NaCI一CaCI2一H2O system fluid inclusions in
sandstones of the Dongying depression,Shandong,and the significance

 Shi Di-Shi1,Xie Bao一Yu2,Meng Fan Wei3   

  • Online:2015-06-13 Published:2015-06-13
  • About author: (1 .China University of Petroleum(Beijing),Beijing, 102249,China;
    2. Shcngli Oil Field,Sinopec Dongying, 257000,China;
    3. Nanjing institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008,China)

摘要:  油田水的成分和变化是含油气盆地演化历史的重要部分.由于油田水的取样十分困难且数据有限很难进行系统分析,木文通过包裹体显微测温学与油田水采样的结果相结合的方法,对东营牛庄洼陷中油田水的成分进行了研究.砂岩中穿插石英颗粒的最后一期包裹体,记录了最晚期的油田水成分.对最晚期的流体包裹体的显微测温学结果表明,晚期流体包裹体主要为NaCI - CaCI2一H2O体系,这与相同或者相近深度油井油田水采样的成分基木一致,证明了该方法的有效性.这种方法便捷、有效,有着良好发展前景.

Abstract:  The evolution and geochemistry of oil-field water are very important to understand the geologic history of an oil-gas basin. However, since difficulty in sampling oil-field water, the compositions of oil-field water have poorly been known so far, In this study, we use fluid inclusions crossing quartz grains in sandstones to determine the compositions of oil-field water in the Dongying depression, Shandong province, eastern China. The secondary fluid inclusions crossing quartz grains in sandstones can record the ofoil-field water at the last time during the burial history. Our results based on microthermometry methods show that some secondary fluid inclusions record a NaCI一CaCI一H2Osystem according to abnormal low temperature phase transition, and arc consistent with the results obtained from the CaCI2一type oil-field water samples collected at the nearly same depths. However, there arc data that indicate that some secondary fluid inclusions are not a NaCI一CaCI2一H2Osystem, which arc consistent with the results of the NaHCO3一typeoil-field water samples collected at the nearly same depths. Our results indicate that the secondary fluid inclusions in quartz grains can well record the compositions of oil-field water, and the microthermometry method is very useful and quick to judge the types of oil-field water.

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