吐哈盆地天然气成因的再认识  

Re-discussion of Natural Gas Genesis in Turpan-Hami Basin

作　　者：苏传国[1] 侯读杰[1] 包建平[2] 白喜俊[3] 朱建国[4] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]长江大学地球化学系,湖北荆州434102 [3]中国石油勘探开发研究院规划所,北京100083 [4]吐哈油田分公司勘探开发研究院,新疆哈密839009

出　　处：《石油天然气学报》2008年第6期165-170,共6页Journal of Oil and Gas Technology

摘　　要：吐哈盆地是我国西北典型的侏罗系含煤盆地,发育丘东-温吉桑型、巴喀型及依拉湖型3种类型的天然气。根据最新的地球化学研究及分析结果,对丘东-温吉桑型、巴喀型天然气的成因进行了重新分析,认为巴喀型的天然气并非煤成气与幔源气的混源,而是受生物降解所致;丘东-温吉桑类型的天然气也不是"生物-热催化过度带"形成的煤成气,而是深层上二叠统湖湘泥岩生成的油型气与中下侏罗统煤系源岩生成的煤成气的混合。Turpan-Hami (Tuha) basin was deemed to be a typical coal measure basin.The natural gases were divided into three genetic type:Yilahu type, Qiudong-Wenjisang type and Baka type. According to the analysis of natural gas geochemical characteristic and carbon isotopic composition,it is considered that Baka type natural gases are not mixture source gas between mantle source gas and coal-deprived gas, but biological remaking gas; Qiudong-Wenjisang type natural gases are not'bio-thermocatalytic transitional zone gas or coal-derived gas', but mixed gas between high maturity petroliferious gas origined from deep Upper Permian source rocks and coal derived gas origined from Mid-lower Jurrassic coal-formed source rocks.

关 键 词：吐哈盆地 煤成气 油型气 成因类型 碳同位素 

分 类 号：P618.13[天文地球—矿床学]