Experimental study of kerogen transformation at hydrothermal conditions (on the example of Bazhenov formation, west Siberia)тезисы доклада

Дата последнего поиска статьи во внешних источниках: 11 мая 2017 г.

Работа с тезисами доклада


[1] Experimental study of kerogen transformation at hydrothermal conditions (on the example of bazhenov formation, west siberia) / A. G. KALMYKOV, A. Y. BYCHKOV, G. A. KALMYKOV et al. // Goldschmidt 2015 Conference Abstracts. — Prague, Czech Republic, 2015. — P. 1498–1498. Experiments on shale oil recovery from bazhenov formation rocks (West Siberia) under hydrothermal conditions were carried out in closed system. The parameters varied from 250oC to 350oC and saturated water pressure to 470oC and 1000 bar. Duration of the experiments varied, with the most results obtained after the 7 days of hydrothermal studies. It was found that the oil product release oil potential of bazhenov formation rocks under such conditions is 55 to 75 mg/g in equivalent to total organic carbon of the rocks. These values are comparable with the results obtained by other reports for shale oil [1]. It was estimated that under low temperatures (250oC) oil fractions release is very low, the maximum release is observed at 300oC, and it degreeses with temperature rises to 350oC. The oil fraction composition is preferable at the temperature of 300oC. Chromatography investigations shown that at 350oC complex processes occur, kerogen may graphitize, and the higher value of sulfur is present in the oil fractions. The release can be increased with the increase of the experiments duration. It was also found that gas is produced in the experiment. The produced gas composition corresponds to the composition of the natural gases receded in West Siberia. The amount of the gas increases with the temperature increase. Only gas fracture was found in hydrocarbon poducts at 470oC and 1000 bar. Further investigations of the process kinetics in open and closed systems and products composition are necessary for the prediction of the system behavior at the time and in the natural conditions.

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