沉积学报2001，Vol.19Issue(1)：141-144,4.
塔里木盆地东部地区天然气地球化学特征及成因探讨（之二）
Geochemical Characteristics and Origin of Natural Gas in East Portion of Tarim Basin（II）
摘要
Abstract
Research on chemical components and isotope composition of carbon and hyd rogen of natural gases from the Tarim basin shows that all discovered gases in this basin are thermogenic.With respect to source organic matter there are two ty pes of gases: 1) the oil-type gas,which generated from Sinian to lower Palae ozoic marine source rocks with the sapropelic organic matter, with -44.5‰～-33. 8‰ of δ13C1, -42.0‰～-28.1‰ of δ13C2, -35.4‰～-28.4‰ of δ13C3, and heavier than -200‰ of δD1; 2) the coal-type gas，which generated from Mesozoic terrestrial source rocks with the humic organic matter, with -40.5 ‰～-33.1‰ of δ13C1, -29.7‰～-21.3‰ of δ13C2, -26.3‰～-20. 3‰ of δ13C3, and lighter than -200‰ of δD1. Based on the geochemical characters and geological setting, Tabei uplift region is regarded as having some reservoired gas pools formed by mixed mature oil-type gas with post matured oil-type gas. Some reservoired gas pools are formed by mixed mature oil-type gas with mature coal-type gas.关键词
塔里木盆地天然气碳同位素氢同位素分类
天文与地球科学引用本文复制引用
陈践发,徐永昌,黄第藩..塔里木盆地东部地区天然气地球化学特征及成因探讨（之二）[J].沉积学报,2001,19(1):141-144,4.基金项目
该研究成果获国家"973”项目 （）
