Application of fluorescence spectroscopy to oil generation kinetics
Date Issued
2006
Date
2006
Author(s)
Chang, Ying-Ju
DOI
zh-TW
Abstract
Abstract
In a petroleum system, if we can define the conditions, in particular, the relative timing when oil or gas was generated, we can greatly reduce the economic risk of exploration. Most conventional techniques for studying hydrocarbon generation, however, provide kinetic parameters for predicting only bulk hydrocarbon (oil + gas), and are unable to distinguish between oil and gas. The present study is developing a new technique using fluorescence spectroscopy to determine the kinetics for liquid petroleum(oil) generation in a closed system. The technique monitors in-situ the fluorescence response of oil newly generated from kerogen through an optical window of a diamond anvil cell during pyrolysis. Since the fluorescence response is proportional to the extent of oil generation only, the measurement can be used to calculate the kinetic parameters for oil generation and extrapolate to the source beds of known burial history for predicting the timing of oil generation. The starting samples include a variety of oil-prone source rocks from different depositional environments: six marine (Type II), two sulfur-rich marine (Type IIS), two lacustrine (type I) kerogens, one torbanite (boghead coal), and one liptinite separated from a humic coal. The pyrolysis experiments were conducted at five heating rates (1, 3, 8, 25, 50°C/min) at temperature from 300 to 600
Subjects
螢光光譜
產油動力學
生油源岩
鑽石砧裂解
fluorescence
oil kinetics
oil-prone source rock
DAC pyrolysis
SDGs
Type
thesis
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