RESEARCH ON THE QUANTITATIVE ANALYSIS METHOD OF C6-C15 LIGHT HYDROCARBON IN SOURCE ROCK SAMPLES
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摘要: 采用低沸点溶剂密封抽提技术和色谱"程序升温蒸发进样(PTV)切割反吹"分析技术,选用色谱内标法对岩石样品中C6—C15轻烃组分进行了定量分析研究.由于轻烃组分的不同挥发性,C7以前的轻烃组分在前处理过程中受到了更多的损失,故在研究中以1-己烯做内标物来控制C6—C7间烃类物质的定量,以1-壬烯做内标物来控制C7—C15间(含C7)烃类物质的定量.实验研究结果表明:方法回收率大于85%,岩石样品的重复性分析相对误差小于10%,方法稳定可靠.分析结果在提供C6—C15轻烃定量数据的同时还提供了轻烃指纹参数,因而其资料信息丰富,在油气田勘探和资源评价领域有一定的推广应用价值.Abstract: Supported by the low boiling-point solvent extraction technique and the gas chromatography technique of Programmed Temperature Vaporization(PTV) cut-out and back-flow,a quantitative research has been made on the C6-C15 light hydrocarbon compounds in the source rock samples by means of an internal standard method.It is found that the light components before C7 lose more than other hydrocarbon components in the sample pre-processing process due to the volatility differences.So 1-hexenes was chosen as an internal standard reference to assure the quantitative analysis of C6 to C7,and 1-nonene was chosen as an internal standard reference to assure the quantitative analysis of C7 to C15(including C7).The results show high recovery(>85%) and good reproducibility(with RE<10%),indicating that this quantitative analysis method is stable and reliable.With this kind of analysis,not only the quantitative data of C6-C15 light hydrocarbons can be provided,the light hydrocarbon fingerprint parameters can also be offered.So it can bring rich geochemical information and has certain application values in the fields of oil and gas exploration and energy resource evaluation.
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[1] 林壬子.罐装岩屑轻烃分析技术的应用研究[J].江汉石油学院学报,1990,12(4):1～7 [2] 王海清.石油C1-C7蒸发烃分离器的研制与实践[J].西南石油学院学报,1999,21(4):95～98 [3] 蒋启贵,熊良华,唐少凡等.酸解烃的Al2O3填充毛细柱分离分析技术[J].石油与天然气地质,1996,17(2):167～168 [4] 武杰,张以珈.岩石中微量轻烃(C1-C9)的分析方法[J].石油实验地质,1985,7(1):20～24 [5] 《石油工业技术监督丛书》编审委员会.原油、轻烃、液化石油气质量检验[M].北京:石油工业出版社,2001.135～142 [6] Canipa-Morales N K,Galan-Vidal C A,Guzman-Vega M A,et al.Effect of evaporation on C7 light hydrocarbon parameters[J].Organic Geochemistry,2003,34(6):813～826 [7] 赵政璋,李永铁,叶和飞等.青藏高原海相烃源层的油气生成[M].北京:科学出版社,2000.107～110 [8] 熊永强,耿安松,王云鹏等.干酪根二次生烃动力学模拟实验[J].中国科学(D),2001,31(4):315～320 [9] 钱志浩,曹玉兰,荣正光.热蒸发法测定轻烃[J].石油实验地质,1982,4(4):280～284 [10] 钱志浩,荣正光,王兴国.岩石氟里昂抽提物(C6-C32)的测定及意义[A].见:中国地质学会石油地质专业委员会.有机地球化学论文集[C],北京:地质出版社,1987.120～128 [11] 蒋启贵,陈伟钧,金聚畅等.岩石低沸点轻烃指纹分析方法研究[J].石油实验地质,2004,26(5):492～495 [12] 张美珍,承秋泉,蒋启贵等.原油轻烃反吹色谱分析[J].石油实验地质,2007,29(2):212～216 [13] 李浩春.分析化学手册第五分册[M].北京:化学工业出版社,1999.703～705 -
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