摘要
塔里木盆地内的天然气按其地化特征的差异，可分为有机气和无机气两大类；有机气又可分为海相气和陆相气。为解决不同类型天然气与地层中烃源岩的配套关系，通过应用先进的实验手段和分析技术，探讨了不同类型天然气的来源问题，得到以下认识：海相气主要分布于克拉通盆地中的塔北、塔中及巴楚地区的中生界及古生界储集层中，气源主要来自寒武—奥陶系；陆相气主要分布于前陆盆地的库车、轮台断隆以及柯克亚等地区的上、下第三系及白垩系等储集层中，气源主要来自三叠—侏罗系腐殖—偏腐殖型烃源岩。腐泥型海相气主要分布在轮南—吉拉克、英买力—东河塘、塔中主垒带及巴楚的鸟山、古董山等，气源主要来自寒武系—下奥陶统；偏腐殖型海相气主要分布在塔中北斜坡、巴楚及塔北隆起的部分区域中，气源主要来自中上奥陶统。
The natural
gas in Talimu Basin may be divided into biogenetic gas and abiogenetic gas according to their
different geochemical properties and the biogenetic gas may be also subdivided into marine
gas and continental gas. In order to check up on the relation between the subsurface natural
gas and its source rock, by means of applying the advanced experimental measures and
analytical techniques, the origin of various kinds of natural gas is discussed as follows: the
marine gas is mainly distributed in the Mesozoic and Paleozoic reservoirs in the Tabei,
Tazhong and Bachu regions of cratonic basin, chiefly coming from the Cambrian Ordovician;
the continental gas is mainly distributed in the Neogene, Paleogene and Cretaceous reservoirs
in the Kuche, Luntai Faulted Uplift and Kekeya regions of foreland basin, chiefly coming from
the humic skewed humic type hydrocarbon source rocks in the Triassic Jurassic; the marine
gas of sapropelic type is mainly distributed in these regions as the Lunna Jilake, Yingmaili
Dong Hetang and Tazhong major horst belts as well as the Niaoshan and Gudongshan of Bachu
Uplift,etc.,chiefly coming from the Cambrian Lower Ordovician;and the marine gas of skewed
humic type is mainly distributed in the north slope of Tazhong Uplift and the partial regions of
the Bachu and Tabei Uplifts, chiefly coming from the Middle Upper Ordovician.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1999年第2期38-43,共6页
Natural Gas Industry
关键词
塔里木盆地
天然气
成因
类型
气源对比
气藏
Talimu Basin, Natural gas, Origin, Type, Gas source correlation
