油气田水中氢氧同位素分析新技术及应用

陶成; 刘文汇; 杨华敏; 把立强

doi:10.11781/sysydz201202199

油气田水中氢氧同位素分析新技术及应用

doi: 10.11781/sysydz201202199

1.
中国科学研究院兰州油气资源研究中心, 兰州 730000
2. 中国石油化工集团公司油气成藏重点实验室, 江苏无锡 214126

基金项目: 国家自然科学基金项目(40739902)资助

详细信息

作者简介:
陶成(1978- ),男,博士生,工程师,从事同位素分析研究.E-mail:tc60@163.com.

中图分类号: TE135
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出版历程
- 收稿日期: 2010-04-25
- 修回日期: 2012-02-03
- 刊出日期: 2012-03-28

A new method for analysis of δ¹⁸O and δD in oil-and-gas field water and its application

1.
Lanzhou Research Center of Petroleum Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
2. Sinopec Key Laboratory of Petroleum Accumulation Mechanisms, Wuxi, Jiangsu 214126, China

摘要

摘要: 采用元素仪-同位素质谱计联机装置(EA-IRMS)对油气田水中氢氧同位素组成进行在线分析.样品水在高温(1450℃)裂解炉内与玻璃碳粒反应生成H₂和CO,经过色谱分离,并被载气带入质谱计.根据二者不同的保留时间,设定磁场转换,依次测定氢氧的同位素组成.该方法一次进样即能完成氢氧同位素的测定,效率高、重复性好.将该方法应用于四川盆地天然气田水样的分析,结果显示三叠系须家河组地层水可能存在古代大气降水和海源沉积水的掺和.
- 氢同位素 /
- 氧同位素 /
- 油田水 /
- 四川盆地
Abstract: We described a new and simple on-line pyrolysis method for the analysis of δ¹⁸O and δD in oil-and-gas field water by continuous flow EA-IRMS.The sample water was converted into CO and H₂ in glassy carbon tube which was filled with glassy carbon granules at high temperature (1 450℃).And then,CO and H₂ were separated in GC column prior to transferring into the ion source of the Isotope Ratio MS for sequential determination of hydrogen and oxygen isotopes of the sample by magnet switching.This method performed dual measurements of δ¹⁸O and δD from a single sample,and had high efficiency and good productivity.Using this method,we measured some water samples from gas fields in the Sichuan Basin.The results showed that the water of Triassic Xujiahe Formation was the mixture of marine sedimentary and ancient meteoric water.
- hydrogen isotope /
- oil-and-gas field water /
- oxygen isotope /
- Sichuan Basin

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参考文献(10)

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