新疆石油地质

›› 2012, Vol. 33 ›› Issue (5): 1-1.

• 论文 •    

油气水层地球化学识别在准噶尔盆地陆西地区的应用

吴 明1，王绪龙2，张越迁2，向宝力2，蓝文芳2，孙平安1，曹 剑1   

  1. (1. 南京大学 地球科学与工程学院,南京 210093;2 中国石油 新疆油田分公司,新疆 克拉玛依 83400)
  • 出版日期:2019-01-01 发布日期:1905-07-12

Application of Identification of Oil, Gas and Water Intervals to Luxi Area in Junggar Basin

WU Ming1, WANG Xulong2, ZHANG Yueqian2, XIANG Baoli2, LAN Wenfang2, SUN Pingan1, CAO Jian1   

  1. (1. Department of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210093, China; 2. Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China)
  • Online:2019-01-01 Published:1905-07-12

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摘要： 以准噶尔盆地陆西地区为例，介绍了油气水层识别方面的研究新进展。含油包裹体颗粒指数（GOI）和储集层成岩方解石Mn元素丰度是二项识别油气水层的新指标，油层、油水同层、水层、干层相对应的GOI值最高值分别大致为大于11%、7%~11%、6%~7%和小于6%，相对应成岩方解石的Mn含量平均值一般分别为大于2.5%（质量百分数）、2.0%~2.5%、1.5%~2.0%和小于1.0%. 此外，天然气（凝析油）层的典型特征是C20、C21、C23三环萜烷呈下降型分布，三环萜烷丰度远高于五环三萜烷（两者主峰比值通常大于2.0），重质油层的典型特征是具有25-降藿烷。

Abstract: The distinguishing of oil, gas and water intervals is a basic task of petroleum exploration and exploitation. Geochemical methods play important roles in solving this task. In this paper, new advances of this study were shown based on a case study in Luxi area of central Junggar basin. It was found that the identification in different areas can not be settled in one rule. This is due to the geological and geochemical differences in reservoir rock. Two new geochemical indices are employed. They are organic geochemical index of grains containing oil inclusions (GOI) and inorganic geochemical index of Mn content of reservoir diagenetic calcite. From oil interval to oil?water mixed interval, to water interval, and to dry interval, these parameters have fairly good varying trend. The maximum GOI values range from >11% to 7%~11%, to 6%~7% and to <6%, and Mn content (MnO, wt%) ranges from >2.5% to 2.0%~2.5%, to 1.5%~2.0% and to <1.0%. As to the identification of gas (condensate) interval and heavy oil interval, it can be solved by biomarkers’geochemical parameters. It is shown that gas interval is characterized by the distribution of C202.0). The heavy oil reservoir is typically characterized by 25?norhopanes/html>

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