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The Explanation on the Turnover of Carbon Isotopic Compositions of Hydrocarbon Series of Natural Gases in the Northern and Central Tarim Basin
Author(s): 
Pages: 482-487
Year: Issue:  3
Journal: ACTA SEDIMENTOLOGICA SINICA

Keyword:  塔北、塔中天然气烷烃同系物碳同位素组成序列倒转;
Abstract: 塔里木盆地塔北、塔中地区天然气中烷烃气碳同位素组成序列存在着局部倒转现象,通过对此的研究和解释,初步认为塔北、塔中天然气中的烷烃气可能是以有机成因气为主;轮台构造单元天然气烷烃系列的δ13C3>δ13C4倒转可能是混入了偏腐泥型的烷烃气体;轮南低凸起构造单元的天然气烷烃同系物碳同位素组成序列正常,天然气来源单一;塔中地区天然气按CH4和C2H6的碳同位素组成特征可分成两组,可能代表了两种不同的成因类型.
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