石油与天然气地质 ›› 1998, Vol. 19 ›› Issue (1): 49-52,58.doi: 10.11743/ogg19980108

• 论文 • 上一篇    下一篇

塔里木盆地牙哈油气田沥青垫特征及成因──烃的特征与沥青垫成因

张敏, 张俊   

  1. 江汉石油学院地球化学研究中心, 湖北荆州434102
  • 收稿日期:1997-08-18 出版日期:1998-03-25 发布日期:2012-01-18

CHARACTERS AND ORIGIN OF TAR MATS IN YAHA OIL-GAS FIELDS,TARIM BASIN:FEATURES OF HYDROCARBONS AND ORIGIN OF TAR MATS

Zhang Min, Zhang Jun   

  1. Jianghan Petroleum Institute, Jingzhou, Hubei
  • Received:1997-08-18 Online:1998-03-25 Published:2012-01-18

摘要:

塔里木盆地牙哈油气田储层的沥青垫、油砂、沥青砂岩和原油正构烷烃、饱和烃生物标志物及芳烃组成特征具有相似性,说明它们的烃类来自相同的烃源岩。沥青垫的形成是因气体侵入引起油藏中原油沥青质沉淀所致。

关键词: 沥青垫, 饱和烃, 芳烃, 成因, 牙哈油田

Abstract:

The characteristics of saturated hydrocarbons and n alkane hydrocarbons of reservoir core extracts and crude oil in Yaha oil and gas fields in Tarim Basin are analyzed and studied systematically in this paper,the results show similarities in n alkane distribution,biomarkers distribution and their combined characteristics of saturated hydrocarbons as well as geochemical characteristics of aromatic hydrocarbons for tar mats,oil sand,asphaltic sandstone and crude oil.These characteristics suggest that hydrocarbons of these samples originated from the same source rocks.However,geochemical characteristics of tar mats reveal that the formation mechanism of tar mats is the intrusion of gases which results in the deposition of asphaltene in crude oils.