论文部分内容阅读
本文对台盆区天然气碳同位素分布特征进行了综合分析,发现台盆区天然气具有较低的烷烃气碳同位素分布;并且盆地内部碳同位素具有中部轻,周边重的分布特征;中央隆起区天然气甲烷、乙烷、丙烷碳同位素值总体上比塔北隆起区要低。结合前人的研究,综合分析认为造成台盆区塔北和塔中天然气同位素值的差异主要包括:天然气成因类型的差异;不同成因、不同成熟度天然气的混合作用;天然气的累积效应;TSR作用的影响;天然气的扩散作用。
In this paper, a comprehensive analysis of the carbon isotope distribution characteristics of natural gas in the basin basin shows that the natural gas in the basin has a lower distribution of carbon and carbon isotopes of alkanes; and the carbon isotopes in the basin have the distribution characteristics of light and heavy in the middle; the natural gas methane The ethane and propane carbon isotope values are generally lower than those in Tabei uplift. Combined with the previous studies, the comprehensive analysis shows that the differences of natural gas isotope values in Tarim Basin and Tarim Basin mainly include: differences in genetic type of natural gas; natural gas with different causes and maturities; cumulative effect of natural gas; TSR effect The impact of natural gas diffusion.