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Thermal Effects on Composition of Rearranged Hopanes in Hydrocarbon Source Rocks
Author(s) -
ZHANG Min,
CHEN Julin,
JIANG Lian
Publication year - 2017
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.13097
Subject(s) - christian ministry , china , chinese academy of sciences , library science , geography , political science , archaeology , computer science , law
The distribution characteristics and formation mechanism of rearranged hopanes in hydrocarbon source rocks are affected by various geological conditions. Among these geological conditions, thermal action has an important influence on the formation of rearranged hopanes, which has been however little documented previously. Taken the lacustrine source rocks in the Songliao Basin and coal source rocks in the Ordos Basin as examples, this work investigated the geochemical characteristics of rearranged hopanes under different sedimentary environments and biological sources and their relationship with thermal maturity. In addition, we studied the variation regularity of absolute concentration of diahopanes and their relative ratios with the increasing thermal evolution degree, in order to provide theoretical basis for the genesis of rearranged hopanes.