Geochemical characteristics and applications of 18α(H)-neohopanes and 17α(H)-diahopanes

作     者：WANG Chunjiang, FU Jiamo, SHENG Guoying, XIAO Qianhua, LI Jinyou, ZHANG Yali & PIAO Mingzhi1. Slate Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences. Guang/hou 510640, China 2. Department of Geosciences, Petroleum University, Beijing 102200, China 3. Institute of Petroleum Exploration and Exploitation, Liaohe Bureau of Petroleum Exploration, Panjin 240000, China 

作者机构：State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China Department of Geosciences Petroleum University Beijing China Institute of Petroleum Exploration and Exploitation Liaohe Bureau of Petroleum Exploration Panjin China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2000年第45卷第19期

页      面：1742-1748页

核心收录：

学科分类：0709[理学-地质学] 081803[工学-地质工程] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：辽河石油勘探局项目(KZ951-B1-412-02) 中国科学院资助项目(KZ951-B1-412-02) 

主　　题：18α(H)-neohopane 17α(H)-diahopane maturity sedimentary-organic facies. 

摘      要：Distributions and geochemical significances of 18α(H)-neohopanes and of 17α(H)-diahopanes in oils from west Xialiaohe depression of the Bohai Bay Basin have been studied. Relative abundance of 18α(H)-neohopanes and of 17α(H)-diahopanes can be effectively used as maturity parameters, in a range of medium-high mature stage, based on consideration on sedimentary-organic facies of source rocks. With a dual geochemical significance of maturity and sedimentary-organic facies, neohopane and diahopane parameters can be well used in oil-source correlation and in petroleum population division. Formation, primary concentration and preservation of precursors of rearranged hopanes are closely related to depositional conditions such as Eh-pH and clays content. A series of probable diahopanes (series D) was detected in the oils, which exhibits a similar distribution pattern and geochemical behavior as that of 17α(H)-diahopanes (series B).