The long-term palaeokarstification in different stages resulted in the gas reservoir of weathered crust of Ordovician in the central part of Shaanganning Basin.
陕甘宁盆地中部奥陶系风化壳天然气储集层的形成，是不同期次古岩溶长期作用的结果。
The giant central gas field in E′erduosi Basin is a stratigraphic gas reservoirs developed in the ancient weathered crust of carbonate rocks on the top of the Ordovician.
鄂尔多斯盆地中部大气田是发育在奥陶系顶碳酸盐岩古风化壳中的地层油气藏。
Gas sources of Ordovician weathered crust gas reservoirs in Central gas Field in the Ordos basin are an important problem that has not been completely solved.
鄂尔多斯盆地中部气田奥陶系风化壳天然气藏的气源问题是迄今尚有争议的重要问题。
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