In order to study the accumulation mechanism of＂barkinite＂,eight Late Permian channel benches（approximately 15-cm across and 10-cm deep） were taken from the Jinshan Mine,Anhui Province,China.The samples were analy...In order to study the accumulation mechanism of＂barkinite＂,eight Late Permian channel benches（approximately 15-cm across and 10-cm deep） were taken from the Jinshan Mine,Anhui Province,China.The samples were analyzed by microscopical and geochemical methods.The microscopical observations indicate that the occurrence modes of＂barkinite＂in this area are different from those in other areas of China.The ratios of structureless＂barkinite＂are much higher in the Jinshan Mine,probably due to the flow-water and marine influenced environments.Furthermore, vitrinite macerals also show a strong fluorescence.The vitrinite fluorescence characteristics have not been observed in the Permian＂barkinite＂coals from northern China.The composition and variation of minerals in the column section also showed that the swamps in the study area were seriously influenced by seawater in the early and late stage during the peat accumulation.展开更多
Leping coal (including barkinite\|rich coal) is a unique kind of coal, which is widely distributed in the Late Permian Longtan Formation, South China. In this paper, Rock\|Eval, Py\|GC and simulation experiment via an...Leping coal (including barkinite\|rich coal) is a unique kind of coal, which is widely distributed in the Late Permian Longtan Formation, South China. In this paper, Rock\|Eval, Py\|GC and simulation experiment via an open\|system were used to study the hydrocarbon\|generating potential, hydrocarbon composition, and hydrocarbon\|generating model of barkinite\|rich coals from the Shuicheng coal field of Guizhou Province, Southwest China. The results show that barkinite\|rich coals have high hydrocarbon\|generating potential, with S\-1+S\-2 being 211-311mg/g, and can produce large amounts of hydrocarbon at the high\|maturity stage, mostly within the temperature range of 420-450℃ (corresponding to VR\-0 1.1-1.5%); barkinite\|rich coal is one of the better oil sources and light hydrocarbon and wet gas are the major hydrocarbon components, which account for 45% and 33% of the total hydrocarbons, respectively. These characteristics are of importance for exploring oil and gas resources in the Late Permian Longtan Formation coals, Southwest China.\;展开更多
In order to study the distribution and significance of "barkinite" in the Han-Xing (Handan-Xingtai) coalfield, northern China, 140 samples were collected from 10 coal mines and then analyzed by maceral separ...In order to study the distribution and significance of "barkinite" in the Han-Xing (Handan-Xingtai) coalfield, northern China, 140 samples were collected from 10 coal mines and then analyzed by maceral separation, Rock-Eval and microscopic method. The results indicate that "barkinite" can be observed in samples from only three mines with a value lower than 2%. The "barkinite" from the Mowo mine was studied in detail because of its relative high content of "barkinite". In addition, the HI value of "barkinite" is higher than that of the coal seam as a whole, showing that "barkinite" has considerable potential for hydrocarbon generation.展开更多
基金supported by the National Science Fundamental of China Project(No.40773040)by the project of the Science Foundation of Hebei(Nos. D2009000832 and D2008000727).
文摘In order to study the accumulation mechanism of＂barkinite＂,eight Late Permian channel benches（approximately 15-cm across and 10-cm deep） were taken from the Jinshan Mine,Anhui Province,China.The samples were analyzed by microscopical and geochemical methods.The microscopical observations indicate that the occurrence modes of＂barkinite＂in this area are different from those in other areas of China.The ratios of structureless＂barkinite＂are much higher in the Jinshan Mine,probably due to the flow-water and marine influenced environments.Furthermore, vitrinite macerals also show a strong fluorescence.The vitrinite fluorescence characteristics have not been observed in the Permian＂barkinite＂coals from northern China.The composition and variation of minerals in the column section also showed that the swamps in the study area were seriously influenced by seawater in the early and late stage during the peat accumulation.
文摘Leping coal (including barkinite\|rich coal) is a unique kind of coal, which is widely distributed in the Late Permian Longtan Formation, South China. In this paper, Rock\|Eval, Py\|GC and simulation experiment via an open\|system were used to study the hydrocarbon\|generating potential, hydrocarbon composition, and hydrocarbon\|generating model of barkinite\|rich coals from the Shuicheng coal field of Guizhou Province, Southwest China. The results show that barkinite\|rich coals have high hydrocarbon\|generating potential, with S\-1+S\-2 being 211-311mg/g, and can produce large amounts of hydrocarbon at the high\|maturity stage, mostly within the temperature range of 420-450℃ (corresponding to VR\-0 1.1-1.5%); barkinite\|rich coal is one of the better oil sources and light hydrocarbon and wet gas are the major hydrocarbon components, which account for 45% and 33% of the total hydrocarbons, respectively. These characteristics are of importance for exploring oil and gas resources in the Late Permian Longtan Formation coals, Southwest China.\;
基金Project 06547001D-5 supported by the Hebei Funding for Main Researchers
文摘In order to study the distribution and significance of "barkinite" in the Han-Xing (Handan-Xingtai) coalfield, northern China, 140 samples were collected from 10 coal mines and then analyzed by maceral separation, Rock-Eval and microscopic method. The results indicate that "barkinite" can be observed in samples from only three mines with a value lower than 2%. The "barkinite" from the Mowo mine was studied in detail because of its relative high content of "barkinite". In addition, the HI value of "barkinite" is higher than that of the coal seam as a whole, showing that "barkinite" has considerable potential for hydrocarbon generation.
