陕甘宁盆地中部气田的主要储气层段为奥陶系马五段的古岩溶层。
At the end of Ordovician Period, a differential elevation occurred in the central Shanganning Basin due to the Caledonian Movement.
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 long-term palaeokarstification in different stages resulted in the gas reservoir of weathered crust of Ordovician in the central part of Shaanganning Basin.
同时将该方法应用于陕甘宁盆地中部某复杂油气储层的识别和预测，并取得了良好的效果。
This method was applied to the identification and prediction of one complex oil and gas reservoir in Shaanganling Basin and a good result was obtained.
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