低渗透油藏CO_2驱SF_6微量气体示踪实验研究  

EXPERIMENT OF MICRO-SIZE AMOUNT SF_6 TRACER FOR CO_2 FLOODING IN LOW PERMEABILITY RESERVOIR

作　　者：万国赋[1] 刘同敬 祝奎[3] 任建强 郭文敏[1] 

机构地区：[1]常州大学石油工程学院,江苏常州213016 [2]中国石油大学提高采收率研究中心,北京昌平102249 [3]中国石化江苏油田分公司试采一厂,江苏江都225265 [4]中国石油大港油田油气开发事业部,天津滨海300280

出　　处：《西南石油大学学报（自然科学版）》2011年第5期141-145,201,共5页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家自然科学基金项目"典型缝洞型油藏流动规律及数学模型研究"(10802079);中国石油科技创新基金项目(2009D-5006-02-01)

摘　　要：CO2驱油技术是提高低渗透油藏采收率的有效方法,而井间示踪监测是深入理解实际油田注CO2驱替特征的重要手段之一。通过天然低渗透岩芯CO2驱SF6气体示踪室内实验研究,独创性地设计了"常压加剂高压注入"的微体积量气体示踪剂的投放方法,建立了基于高灵敏度热导检测器的SF6示踪剂气相色谱检测方法。实验结果表明:SF6气体示踪剂的投放工艺具有简便、加剂量可控的优点,示踪剂检测方法具有简单、速度快(2 min/样)、灵敏度高(检测极限10–7)和精密度好(相对标准偏差为0.6%)的优点。The CO2 flooding technology is an effective method for enhanced oil recovery(EOR).Well-to-welltracer test is one important means to achieve the in-depth understanding on the characteristics of the displacementprocess for CO2 flooding.In this paper,the laboratory study of the SF6 gas tracer test in CO2 flooding is carriedout for the natural low permeability core.The micro-size amount SF6 tracer injection method named as'Put in atatmospheric pressure and high-pressure injection'is originally designed,but also the gas chromatography detectionmethod for SF6 tracer is established on the basis of high-sensitivity thermal conductivity detector.The resultsshow that the SF6 tracer delivery process has the advantages of simplicity,controllable dosage strengths and tracerdetection method also exhibit the advantages of simplicity,fast detection speed,high sensitivity and good precision.

关 键 词：低渗透油藏 CO2驱 气体示踪剂 SF6投放工艺 SF6检测技术 

分 类 号：TE319[石油与天然气工程—油气田开发工程]