石油学报 ›› 2004, Vol. 25 ›› Issue (2): 41-46.DOI: 10.7623/syxb200402008

• 地质勘探 • 上一篇    下一篇

原油稀有气体同位素特征及其示踪作用——以黄骅坳陷港西油田为例

张晓宝1, 徐永昌1, 陈建平2, 孙明良1, 涂建淇2, 李秀芬1   

  1. 1. 中国科学院兰州地质研究所气体地球化学国家重点实验室, 甘肃兰州, 730000;
    2. 中国石油勘探开发研究院, 北京, 100083
  • 收稿日期:2003-01-13 修回日期:2003-04-13 出版日期:2004-03-25 发布日期:2010-05-21
  • 作者简介:张晓宝,男,1958年1月生,1982年毕业于长春地质学院,现为中国科学院兰州地质研究所研究员,博士,主要从事天然气地质地球化学研究.E-mail:xbzhang@ns.lzb.ac.cn
  • 基金资助:
    国家自然科学基金项目(40172053)和中国科学院资源环境领域知识创新工程重要方向(KZCX3-SW-128)及2002年气体地球化学国家重点实验室基金资助项目成果.

Isotopic characteristics of noble gas in crude oil and their tracing significance

ZHANG Xiao-bao1, XU Yong-chang1, CHEN Jian-ping2, SUN Ming-liang1, TU Jian-qi2, LI Xiu-fen1   

  1. 1. State Key Laboratory of Gas Geochemistry in Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou, 730000, China;
    2. Research Institute of Petroleum Exploration and Development, Petro China, Beijing, 100083, China
  • Received:2003-01-13 Revised:2003-04-13 Online:2004-03-25 Published:2010-05-21

摘要: 以黄骅坳陷港西油田为例,测试并研究了原油中的稀有气体氦和氩同位素组成,并探讨了其示踪作用.研究表明:①港西油田6个未受空气污染原油样品具有幔源稀有气体介入的特征,其中氦气占介入稀有气体总量的139%~328%,平均为241%,说明港西油田具有幔源氦侵入的构造背景,且大地热流值较高,平均达750mWm-2;②据原油40Ar/36Ar的年代积累效应,推测港西油田油源应为第三系烃源岩;③注水是港西油田原油稀有气体受空气污染的主要原因,对原油中的3He/442040Ar/36Ar和420

关键词: 原油, 稀有气体, 示踪作用, 同位素特征, 港西油田, 黄骅坳陷

Abstract: Taking Gangxi Oilfield in Huanghua Depression as an example,the isotopic compositions of noble gas in crude oil and their tracing significance were investigated.The 3440Ar-to-36Ar age accumulation effect that the Gangxi oil should be sourced from the Tertiary.Water injection resulted in the contamination of noble gas in the crude oil of Gangxi oilfield.The relations of 3He-to-42040Ar-to-36Ar ratio with 420Ne ratio can be used to distinguish the water-injected wells and non-injected wells and to predict the effects of water injection.The application of research method for noble gas in crude oil to petroleum geology provides a new way for inferring natural gas and oil source,tectonic backgrounds,geothermal flow value and the effect of water injection in oilfield.

Key words: crude oil, noble gas, tracing, isotopic characteristics, Gangxi Oilfield, Huanghua Depression

中图分类号: