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Genetic Types of Deep Natural Gas in Guxi Fault Zone in Jiyang Depression
Author(s): 
Pages: 172-179
Year: Issue:  1
Journal: Acta Sedimentologica Sinica

Keyword:  深层天然气成因类型三元地球化学示踪体系孤西断裂带济阳坳陷;
Abstract: 针对孤西断裂带深层天然气来源多、成因复杂的问题,以烃源岩特征分析为基础,利用天然气三元地球化学示踪体系,还考虑了伴生油生物标志物特征等,并结合成藏地质条件的分析,深入剖析了该区天然气的地球化学特征和成因类型.认为孤西断裂带深层天然气呈规律性变化,自西往东由油型气逐渐过渡到煤成气:其中渤深6潜山天然气由源自渤南洼Es4上高熟油型气和Es3下油型伴生气混合而成;渤古4潜山以E<,s4>上生成的高成熟油型气为主,混有源自C-P的煤成气;孤北潜山第二排山天然气由煤成气和油型气混合而成;第三和第四排山则主要为C-P来源的煤成气.
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