Sulphur-containing Compounds in Sulphur-rich Crude Oils from Hypersaline Lake Sediments and Their Geochemical Implications
Sulphur-containing Compounds in Sulphur-rich Crude Oils from Hypersaline Lake Sediments and Their Geochemical Implications作者机构:Institute of Geochemistry Academia Sinica Institute of Geochemistry Academia Sinica Organic Geochemistry Unit School of Chemistry University of Bristol Bristol U.K. Organic Geochemistry Unit School of Chemistry University of Bristol Bristol U.K. Organic Geochemistry Unit School of Chemistry University of Bristol Bristol U.K. Organic Geochemistry Unit Department of Chemistry and Chemical Engineering Delft University of Technology Delft The Netherlands Organic Geochemistry Unit Department of Chemistry and Chemical Engineering Delft University of Technology Delft The Netherlands Organic Geochemistry Unit Department of Chemistry and Chemical Engineering Delft University of Technology Delft The Netherlands
出 版 物:《Acta Geochimica》 (地球化学学报(英文版))
年 卷 期:1987年第6卷第2期
页 面:115-126页
主 题:Sulphur containing Compounds in Sulphur rich Crude Oils from Hypersaline Lake Sediments and Their Geochemical Implications
摘 要:Three sulphur-rich commercial crude oils have been studied,which contain sulphur as high as up to4—12%.These samples were collected from Tertiary hypersaline lake sediments of the Jianghan Basin,Hubei Province at different depths,but above the oil generation threshold(2200m).FPD—GC and GC-MSdata show that aromatic fractions of the crude oils are composed of different homologues of sulphur-containing compounds,including long-chain normal alkyl-thiophenes and-thiolanes,long-chainisoprenoid-thiophenes and-thiolanes,and *** is worth noting that the distribution patternsof long-chain alkyl-thiophenes and-thiolanes from two shallow-seated crude oils are quite similar to thoseof normal alkanes showing marked even-odd *** seems that the even-odd predominance ofsulphur-containing compounds decreases with increasing burial depth of the crude *** majorcomponent of aliphatic fraction is phytane,and similarly the major peaks of aromatic fractions also representC20isoprenoid *** preliminary conclusions have been drawn from the above discussion:(1)Abundant sulphur-containing compounds may be used as an indicator of low mature or immature crude oils produced fromhypersaline lake sediments;(2)Sulphur-containing compounds are considered to be early diageneticproducts of reactions between elemental sulphur or sulfides and alkanes or their precursors(phytols,fattyacids,alcohols,etc.),or of bacterial activities,but not direc■ inputs of organisms.