顶空液相微萃取技术在油气化探指标检测中的应用——以土壤苯系物指标检测为例  

Application of HS-LPME technique in geochemical exploration of oil and gas: A case study of BTEX indicators

作　　者：高俊阳[1] 陈浙春[1] 宁丽荣[1] 卢丽[1] 杨帆[1] 黄欣[1] 杨俊[1] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所,江苏无锡214151

出　　处：《物探与化探》2015年第4期812-816,共5页Geophysical and Geochemical Exploration

基　　金：中国石油化工股份有限公司石油勘探开发研究院院控项目(G5800-14-ZS-YK010)

摘　　要：苯系物是油气藏示踪的有效指标,但油气化探样品中苯系物含量低、基质复杂,增加了检测难度。本研究使用顶空液相微萃取技术结合GC/MS检测,建立起土壤样品中多种苯系物的定性定量检测方法。该方法具有较高的准确度和精密度,并具有所需样品量少、操作简便、成本低、绿色环保等优点,为苯系物指标在油气化探中的应用奠定了基础。在已知区的应用效果表明,苯系物中甲苯含量与油藏存在一定的对应关系,证明该方法适合于油气化探土壤样品中简单苯系物的检测。BTEXs are effective reservoir molecule tracing indicators. But low levels of BTEXs in complex matrix samples increase the difficulty of detecting. In this study, a qualitative and quantitative detection method of BTEXs in soil as a geochemical exploration indi?cator was established using HS?LPME combined with GC/MS. Higher accuracy and precision were obtained. With the advantages of less sample, simple operation, low cost and environmental friendly, this method lays a foundation for its application in surface geochemical prospecting for oil and gas. Results in known oil area showed that there was certain relationship between the toluene concentration in surface soil samples and the underlying oil reservoir. This method was suitable for detection of BTEXs in soil samples in surface geo?chemical prospecting for oil and gas.

关 键 词：顶空液相微萃取 苯系物 GC/MS 油气化探 土壤样品 

分 类 号：P632[天文地球—地质矿产勘探] P618.13[天文地球—地质学]