柴达木盆地三湖地区热成因气成藏条件与勘探潜力

摘要

随着柴达木盆地天然气勘探逐步深化，三湖地区热成因气正在成为新的勘探方向。阐述了热成因气的发现过程并分析了其分布特征，指出三湖地区存在一个新的含气系统——新近系含气系统，对其主要地质条件开展研究后认为，勘探潜力巨大，其天然气资源量约1．5×10^12m^3,碱山一鄂博山一落雁山以西是下步浅层勘探的有利区带，鸭湖一台南构造以东是下步中深层勘探的有利区带。%With the gradual deepening of gas exploration in Qaidam basin, the thermogenic gas of Sanhu area is becoming the new prospect- ing target. This paper presents the discovery of thermogenic gas, analyzes its distribution and points out that in Sanhu area there exists a new gas system, namely, the Neogene gas system. It suggests from study of the geologic conditions that it has great prospecting potentials with gas resource amount of 1.5×10^12 m^3, the west of Jianshan-Eboshan-Luoyanshan could be the favorable zones for next shallow prospect- ing, and the east of Yahu-Tainan structure could be the favorable ones for future medium-deep exploration.