摘要
本文通过对准噶尔盆地天然气藏的生储盖组合类型进行研究和划分,确定了准噶尔盆地天然气藏存在间断型、连续型和复合型三种生储盖组合类型。当前已发现的陆梁隆起石南油气田侏罗系三工河组气藏、西部隆起二叠系上乌尔禾组气藏和南缘冲断带古近系紫泥泉子组等气藏,均是间断型的生储盖组合类型;而陆梁隆起东部的石炭系天然气藏是以连续型为主的复合型大中型气藏。最新的勘探结果表明,生储盖组合类型为连续型的气藏是准噶尔盆地下一步寻找大中型气藏的有利目标。
There are plenty of natural gas resources in Junggar Basin. Dozens ot gas reservoirs and gas points have been discovered over several decades of exploration. However, the majority of these discovered gas reservoirs are small or medium gas reservoirs and large-medium sized gas reservoirs have not been discovered yet, which is the main reason for slowly increasing of proved reserves of natural gas. Three types of source-reservoir-seal combinations of gas reservoirs, namely discontinuous, continuous and complex reservoirs are determined in Junggar Basin. The current found Jurassic Sangonghe formation in Shinan gas field of on Luliang uplift, Permian upper Wuerhe formation on West uplift and Paleogene Ziniquanzi formation on thrust belt of Southern margin of Junggar Basin are all discontinuous source-reservoir-seal combination which is the leading type in the Junggar basin but dominated by small and medium gas reservoirs. The Carboniferous gas field in the eastern Luliang uplift is a large to medium gas reservoir of complex source-reservoir-seal combination which is dominated by continuous source-reservoir-seal combination. The latest gas exploration results show that the gas fields of continuous source-reservoir-seal combination are the favorable prospect targets, such as the tight sandstone gas of Permian Jiamuhe formation on the west uplift and upper Jurassic-lower Cretaceous gas reservoirs of lower assemblage in the Southern thrust belt of Junggar Basin.
出处
《中国西部科技》
2015年第5期6-10,共5页
Science and Technology of West China
关键词
准噶尔盆地
天然气
生储盖组合
大中型气藏
Junggar Basin
Natural Gas
Source-reservoir-seal Combination
Large and Medium Gas Field
