Method and device for analyzing light fraction compounds in petroleum hydrocarbon source rock
An analysis method and source rock technology, applied in the direction of analysis materials, preparation of test samples, material separation, etc., can solve problems such as loss, environmental protection problems, small sample size, etc., and achieve the effect of avoiding loss
Active Publication Date: 2009-01-28
PETROCHINA CO LTD
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Abstract
The invention relates to an analyzing method of light distillate compounds in petroleum hydrocarbon source rocks and a device thereof. The analysis of the light distillate compounds that are contained in organic matters dispersing in the hydrocarbon source rocks is implemented in a liquid nitrogen freezing and impact crushing device and a sealed heating and online chromatogram sampling and analyzing device. A rock sample is quickly crushed into powder by an impact hammer in a liquid nitrogen freezing sample container, the sample powder is hermetically heated, the organic matters dispersing in the sample is thermally desorbed and blown into a liquid nitrogen cold trap in a chromatogram oven by helium gas, the cold trap is taken down after the thermal desorption is finished, and a chromatogram analyzing program is started, wherein, the largest diameter of analyzed samples can reach 2cm, the feeding amount of the liquid nitrogen is 7ml, the emptying time is 90sec, the thermal desorption temperature is 200 DEG C, and the homothermal time lasts for 10 minutes. The analyzing method of the light distillate compounds in the petroleum hydrocarbon source rocks does not have light distillate loss, and can obtain the chromatogram peak of hydrocarbon substances that have carbon number greater than C5, consistent separating effect with the analyzing effect of high-quality crude oil light distillates, straight chromatogram baseline, and good reproducibility of the chromatogram peak.
Application Domain
Component separationPreparing sample for investigation
Technology Topic
Amount of substanceChemistry +13
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