新疆石油地质 ›› 2005, Vol. 26 ›› Issue (1): 44-46.

• 油气勘探 • 上一篇    下一篇

东濮凹陷西斜坡地区原油成熟度

李林强, 林壬子   

  1. 石油大学 资源与信息学院,北京 102200
  • 收稿日期:2004-05-09 出版日期:2005-02-01 发布日期:2020-08-24
  • 作者简介:李林强(1974-),男,内蒙古赤峰人,在读博士研究生,油气地球化学, (Tel )010-64965977 (E-mail )LLinqiang@sohu.com

Oil Maturity in West Slope Area of Dongpu Sag

LI Lin-qiang, LIN Ren-zi   

  1. Institute of Resources and Information, University of Petroleum, Beijing 102200, China
  • Received:2004-05-09 Online:2005-02-01 Published:2020-08-24

摘要: 胡状集和庆祖集油田是东濮凹陷西斜坡地区的两个主要油田,原油主要分布在长垣断层与石家集断层之间二台阶构造带上,该区原油具有饱和烃含量低、含蜡量高、碳同位素较重的特征。利用GC-MS技术对原油分析结果显示,饱和烃馏分中Cg甾烷立体异构体比值、三降藿烷w(Ts)/w(Tm)比值普遍较低,这些参数值与我国不同盆地典型低熟原油分布范围十分相似。芳烃馏分中检出了反映低成熟阶段生物标志物一-烷基噻吩、四氢噻吩等含硫化合物及多羟基维生素E系列。综合分析认为,胡状集和庆祖集油田的原油为低成熟原油,而非成熟原油。

关键词: 东濮凹陷, 西, 斜坡, 原油, 成熟度

Abstract: The crude oils in Huzhuangji and Qingzuji oilfields in west slope area of Dongpu sag are mainly distributed in Ertaijie struc- tural belt between Changyuan (placanticline) fault and Shjaji fault, with characteristics of low content of saturated hydrocarbons, high content of wax and weight carbon isotope. The GC-MS analysis results show that the isomer ratio of C2 sterane and the ratio of tris- norhopene w(Ts)Vw(Tm) are generally low and similar with the distributing scope of typical low maturity of crude in other basins in China. Also, in aromatic hydrocarbons, the biomarkers reflecting low maturity stage, such as alkyl thiophenes, tetrahydronthiophene and dehy- droxytocopherol series compounds, are detected. Comprehensive analysis indicates that the crude oils found in Huzhuangji and Qingzuji oilfelds are all in low maturity rather than in maturity.

Key words: Dongpu sag, west, slope, crude oil, maturity

中图分类号: