A PRELIMINARY STUDY ON HYDROCARBON GENERATION FROM SECONDARY EVOLUTION OF THE CARBONIFEROUS-PERMIAN COAL SERIES IN NIQIUJI FAULT-DEPRESSION

Han Yunsheng

doi:10.11781/sysydz1992021781

Volume 14 Issue 2

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Han Yunsheng. A PRELIMINARY STUDY ON HYDROCARBON GENERATION FROM SECONDARY EVOLUTION OF THE CARBONIFEROUS-PERMIAN COAL SERIES IN NIQIUJI FAULT-DEPRESSION[J]. PETROLEUM GEOLOGY & EXPERIMENT, 1992, 14(2): 181-187. doi: 10.11781/sysydz1992021781

Citation:

Han Yunsheng. A PRELIMINARY STUDY ON HYDROCARBON GENERATION FROM SECONDARY EVOLUTION OF THE CARBONIFEROUS-PERMIAN COAL SERIES IN NIQIUJI FAULT-DEPRESSION[J]. PETROLEUM GEOLOGY & EXPERIMENT, 1992, 14(2): 181-187. doi: 10.11781/sysydz1992021781

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A PRELIMINARY STUDY ON HYDROCARBON GENERATION FROM SECONDARY EVOLUTION OF THE CARBONIFEROUS-PERMIAN COAL SERIES IN NIQIUJI FAULT-DEPRESSION

doi: 10.11781/sysydz1992021781

Han Yunsheng

North China Bureau of Petroleum Geology, Zhengzhou

Received Date: 1989-09-16
Publish Date: 1992-04-25

Abstract

Abstract

Using parameters of bitumen A, hydrocarbon content, hydrogen/carbon, atomic ratio, macer als and vitrinitc reflectance, a systematic correlation on the parameters from the wells Nan 6 and Nan 11 has been made. The two wells are located within the same faulted depression and have expe rienced similiar sedimentation but different in the thickness of the overlying sequences. It is revealed that a secondary evolution of hydrocarbon generation did occur in the Carboniferous -Permian coal series within the area. Preliminarily the depth for the hydrocarbon generation threshold is defined at 3400m, and the initial expulsion at 4000m deep. The author believes that what mentioned above can provide scientific basis for the explorations of gas (oil) pools derived from the secondary evolu tion of coal series.