The Influence of High-pressure Autoclave on Hydrogen Product during Hydrous Simulation Experiment

MA Su ping; HE Jian qiao; TANG Wei; XIA Yan qing

Hydrous pyrolysis using hig h-pressure autoclave, nowadays, is a relatively effective way to study petroleum geochemistry,which can simulate the process of oil and gas formation.In general, high percentage hydrogen is often found in the gas pyrolysate produced from organic in hydrous simulation experiments, which employ high-pressure autoclave.Most people beliveve the hydrogen mainly comes from organic reactions.In order to prove this problem, the authors have done a series of simulation experiments.In the experiment, the material of high-pressure autoclave is an alloy made from 1Cr18Ni9Ti and OCr17Ni12Mo2.The temperature of the experiments are under 330 ℃ and 330 ℃ for 72 hours.The quantity of water is accurately calculated.The experiment items include organic and inorganic matters, such as Fushun oil shale,Kaolinite and the deionized water, etc.The results several experiments show that the sources of hydrogen are not only organic reactions but also inorganic reactons.Particularly.the reactions in which only the deionized water is added into the high-pressure autoclave, also release hydrogen. This result proves the reaction between the high-pressure autoclaves and the deionized water at high thermal stress effectively.So the series of simulation experiment using high-pressure autoclave should be thought over and be modified, or the validity of the analysis and explanation of such experiments will be not reliable.

State Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000

Received Date: 2002-12-04

Rev Recd Date: 2003-04-14

Publish Date: 2003-12-10

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Abstract: Hydrous pyrolysis using hig h-pressure autoclave, nowadays, is a relatively effective way to study petroleum geochemistry,which can simulate the process of oil and gas formation.In general, high percentage hydrogen is often found in the gas pyrolysate produced from organic in hydrous simulation experiments, which employ high-pressure autoclave.Most people beliveve the hydrogen mainly comes from organic reactions.In order to prove this problem, the authors have done a series of simulation experiments.In the experiment, the material of high-pressure autoclave is an alloy made from 1Cr18Ni9Ti and OCr17Ni12Mo2.The temperature of the experiments are under 330 ℃ and 330 ℃ for 72 hours.The quantity of water is accurately calculated.The experiment items include organic and inorganic matters, such as Fushun oil shale,Kaolinite and the deionized water, etc.The results several experiments show that the sources of hydrogen are not only organic reactions but also inorganic reactons.Particularly.the reactions in which only the deionized water is added into the high-pressure autoclave, also release hydrogen. This result proves the reaction between the high-pressure autoclaves and the deionized water at high thermal stress effectively.So the series of simulation experiment using high-pressure autoclave should be thought over and be modified, or the validity of the analysis and explanation of such experiments will be not reliable.

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Reference (10)

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The Influence of High-pressure Autoclave on Hydrogen Product during Hydrous Simulation Experiment

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