鄂尔多斯盆地鄂X井奥陶系风化壳碳酸盐岩储层特征研究

Study on carbonate reservoir characteristics of the weathering crust of Hubei-Giota system in Ordos Basin

以鄂X井区为研究对象,通过对该井区奥陶系马五段孔隙类型及其分布、碳酸盐岩储层的储集类型、碳酸盐岩储层的孔隙结构特征的研究,探索和研究其孔洞形成机制,并结合鄂X井区地质录井及物性分析资料对鄂X井地区储层特征进行分析。并得出结论为碳酸盐岩储集层基本由孔隙和裂缝两组储集空隙系统所组成,孔隙中的有小部分可容纳油气,裂缝则具有良好的渗滤通道作用,二者的有机配置可形成碳酸盐岩储集层的高渗透带。由此可以为该区域天然气的进一步勘探、评价与开发和储量计算提供依据。

This paper takes e-X well area as the research object,through studying the pore type and its distribution of Ordovician in this well area,reservoir type of carbonate reservoir,pore structure characteristics of carbonate reservoir,exploring and studying the mechanism of its hole formation,Combined with geological logging and physical property analysis data of e-X well area,the characteristics of the reservoir are analyzed.It is concluded that the carbonate reservoir is composed of two sets of pores and fractures,the pores of which can hold the oil and gas,the fissure has a good infiltration channel,and the organic configuration can form the high permeability zone of carbonate reservoir.Thus,it can provide basis for further exploration,evaluation and development of natural gas and reserves calculation in this region.