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用气相色谱法分析原油轻馏分(C_7前)组成,对油田资源普查具有实际意义。对此曾有过研究。将原油直接进入一个予切割装置,切掉C_7后的馏分,C_7前的馏分进行色谱分析。此方法与一般所用精馏法相比,方法简单,准确度高,轻组分损失少,分析时间缩短了十几倍(分柝一个样品只需要两个半小时)。油田应用实践证明,此法用于油田资源普查,可及时提供出 (C_7前)轻组分含量结果。
Gas chromatographic analysis of crude oil light fraction (C_7) composition, the oilfield resources census is of practical significance. There have been studies on this. The crude oil directly into a pre-cut device, cut off the C_7 fraction, C_7 fraction before chromatography. Compared with the commonly used rectification method, this method is simple, accurate, less loss of light components, and shorten the analysis time by a dozen times (only takes two and a half hours for dividing a sample). Oilfield application proved that this method is used for census of oilfield resources, can provide timely (C_7 front) light component content results.