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本文用色谱-质谱法和气相色谱法鉴定了胜利油田、华北油田、苏北油田、大港油田、辽河油田和大庆油田以及四川、贵州等49个原油和3个岩样中的类异戊二烯烷烃(i15～i20),测定了植烷(Ph)、姥鲛烷(Pr)、降姥鲛烷(i18)、2、6、10-三甲基十三烷(i16)和法呢烷(i15)的相对百分含量(五个组分的含量为100％),以及Pr/Ph、Pr/nC_(17)、Ph/nC_(18)和(i18+i16+i15)/(Ph+Pr)。Ph、Pr,i18,i16和i15的相对百分含量分布曲线可以表明原油的特征,用来对比原油。原油中类异戊二烯烷烃的演化可以分成低成熟阶段,成熟阶段和高成熟阶段。
In this paper, GC-MS and GC were used to identify isoprenoids in 49 crude oil and 3 rock samples in Shengli Oilfield, Huabei Oilfield, Subei Oilfield, Dagang Oilfield, Liaohe Oilfield and Daqing Oilfield as well as Sichuan and Guizhou Provinces. Alkanes (i15 to i20) were measured for phytane (Pr), pristane (Pr), pristane (i18), 2,6,10-trimethyltridecane (i16) i15) with a relative percentage content of five components of 100%, and Pr / Ph, Pr / nC_17, Ph / nC_18 and i18 + i16 + i15 / ). The relative percentage distribution curves for Ph, Pr, i18, i16 and i15 indicate the characteristics of the crude oil used to compare the crude oils. The evolution of crude isoprenoid hydrocarbons can be divided into low maturity stage, mature stage and high maturity stage.