摘要
对辽河坳陷不同类型烃源岩有机质丰度、类型、成熟度、生气性能和生气强度进行研究后认为,区内已探明的天然气主要为生物热催化过渡带气和低温热解气,而高温热解气和裂解气很少,这与辽河坳陷烃源岩热演化程度不相称;热演化程度高、生烃强度大的洼陷带深层应该蕴藏着丰富的、成熟度相对较高的天然气。在分析了几个重点地区深层构造背景、储集条件的基础上,认为这些地区或处于气源灶内或与气源岩直接接触,成藏条件优越,是下一步勘探的重要领域。
The organic matter abundance,type,maturity,gas generation property and intensity of different source rocks in Liaohe Depression are studied.The result shows that the types of proved natural gas are mainly bio-thermo-catalytic transitional zone gas and low temperature pyrolysis gas,while pyrolysis gas and high temperature pyrolysis gas rarely exist,which is not consistent with the thermal evolution degree of source rocks in Liaohe Depression.The depressions where exist high thermal evolution and high hydrocarbon generation intensity should be rich in natural gas with relatively higher maturity.Based on the analysis of deep tectonic settings and reservoir conditions of several important regions,it is supposed that these regions should be in the interior of gas kitchen or directly contact with gas source rocks,thus,they has excellent conditions for reservoir forming and will be the target areas for the further exploration.
出处
《岩性油气藏》
CSCD
2011年第3期23-28,共6页
Lithologic Reservoirs
关键词
深层天然气
天然气勘探
烃源岩
储集条件
辽河坳陷
deep natural gas
natural gas exploration
hydrocarbon source rocks
reservoir condition
Liaohe Depression
