Types and characteristics of the Ordovician carbonate reservoirs in Ordos Basin,China
Types and characteristics of the Ordovician carbonate reservoirs in Ordos Basin,China
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发表时间：
2012
影响因子：
1.8
通讯作者：
Ma Zhanrong
中科院分区：
文献类型：
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作者：
Ma Zhanrong
鄂尔多斯盆地在奥陶系发育“两隆起、两鞍、两坳陷”古构造格架。这两个隆起水平上呈“L”形展布，共同控制了奥陶系沉积相及不同类型碳酸盐岩储层的区域分布。奥陶系储层主要分为四种类型：风化壳溶蚀孔储层、白云岩晶间孔储层、台地边缘礁岩孔储层和岩溶洞储层。其中风化壳溶蚀孔隙储层是最有利的储层，在其中发现了靖边大型气田。白云岩晶间孔隙储层勘探取得初步突破。另外两类储层的勘探尚未取得实质性进展，但近期的勘探发现了一些具有较大勘探潜力的新迹象。这是鄂尔多斯盆地下古生界天然气勘探的重点前沿。
In the Ordovician,the Ordos Basin was deposited in a "two-uplift,two-saddles,two-depression" paleotectonic framework.The two uplifts horizontally spread in an "L" shape and jointly controlled the Ordovician sedimentary facies as well as the regional distribution of different types of carbonate reservoirs.The Ordovician reservoirs were mainly divided into four types,i.e.,weathering crust dissolution pore reservoirs,dolomite intercrystalline pore reservoirs,platform margin reef pore reservoirs,and karst-vuggy reservoirs.Of these,weathering crust dissolution pore reservoir is the most favorable reservoir,in which the large Jingbian gas field has been found.Initial breakthrough has been made in the exploration of dolomite intercrystalline pore reservoir.Substantial exploration progress has not been achieved in the other two types of reservoirs,but recent exploration has found some new signs of great exploration potential.These are the key frontiers of gas exploration in the Lower Paleozoic of Ordos Basin.