OALib Journal期刊
ISSN: 2333-9721
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珠江口盆地陆相原油轻烃环优势及其成因
Keywords: 珠江口盆地,陆相原油,轻烃,环优势,成因,湖相烃源岩,煤系烃源岩
Abstract:
?珠江口盆地淡水中深湖相烃源岩所生成原油的轻烃中三环优势(3pr)大于五环优势(5pr)和六环优势(6pr),而其煤系烃源岩所生成原油的轻烃中三环优势(3pr)较小,五环和六环优势(5pr+6rp)较大;淡水中深湖相烃源岩中过渡金属及其配位体结构有利于速率常数k3,ⅰ型和ⅱ1型干酪根有利于形成三环优势(3pr),生成的原油c7轻烃中链烷烃含量较高,而煤系烃源岩中过渡金属及其配位体结构有利于速率常数k5+k6,ⅱ2型和ⅲ型干酪根有利于形成五环和六环优势(5pr+6rp),生成的原油c7轻烃中环烷烃和芳烃含量较高。
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