Facies-controlled volcanic reservoirs of northern
Songliao Basin, NE China
佚名
【期刊名称】《世界地质（英文版）》 【年(卷),期】2005(008)001
【摘要】Volcanic rocks of the late Mesozoic are very important reservoirs for the commercial natural gases including hydrocarbon, carbon dioxide and rare gases in the northern Songliao Basin. The reservoir volcanic rocks include rhyolite,andesite, trachyte, basalt and tuff. Facies of the volcanic rocks can be classified into 5 categories and 15 special types.Porosity and permeability of the volcanic reservoirs are facies-controlled. Commercial reservoirs were commonly found among the following volcanic subfacies: volcanic neck (Ⅰ1), underground-explosive breccia (Ⅰ3), pyroclastic-bearing lava flow (Ⅱ3), upper effusive (Ⅲ3) and inner extrusive ones (Ⅳ1). The best volcanic reservoirs are generally evolved in the interbedded explosive and effusive volcanics. Rhyolites show in general better reservoir features than other types of rocks do. 【总页数】6页(72-77)
【关键词】Songliao Basin;Cretaceous;volcanic facies;natural gas reservoir 【作者】佚名
Facies-controlled volcanic reservoirs of northern Songliao Basin, NE China
