应用印模法,以石炭系区域标志层双峰灰岩底至奥陶系潜山面填平补齐的沉积厚度为标识,恢复了轮古西地区前石炭纪古岩溶地貌.自东向西划分了岩溶台地、岩溶缓坡地和岩溶盆地3类二级地貌单元.应用现代岩溶分类方法,根据微地貌组合形态,对二级地貌作精细刻画,划分了9种三级地貌单元.认为不同的地貌位置,其水动力条件不同,不同类型岩溶地貌的发育特征、古水系排泄和储层充填特征存在着差异性.

Using the method of molding, with referring the sediment thickness from the bottom of Carboniferous Shuangfeng limestone to the surface of Ordovician buried hill as the marker, the preCarboniferous karst micro-geomorphology is restored in the west part of Lungu Oilfield. Three 2nd-grade geomorphological units are divided, which include the karst platforms, karst gentle slopes and karst basin from east to west. In the light of the division method of modern karst theory, the 2nd-grade geomorphological units are characterized finely and then eight 3rd-grad micro-geomorphological units are divided in this area. It is concluded that the hydrodynamic circumstance is different in different geomorphologic locations which results in the differentiation among the karst micro-geomorphology, the water drainages and the reservoir filling style. the law and filling of the landscape units in karst reservoir development.