论文部分内容阅读
根据薄片、物性、孔隙结构、岩心分析和化验资料,对塔西南巴麦地区奥陶系碳酸盐岩储层特征进行的研究结果表明,该套储层储集空间以裂缝型和裂缝-孔隙(洞)型为主,其中良里塔格组主要以裂缝型为主,鹰山组和蓬莱坝组兼有裂缝、裂缝-孔隙(洞)型两种类型;储层物性较差,具低孔中高渗特征,裂缝和溶蚀对改善储层渗透性贡献大;奥陶系储层储集体类型为风化壳型、结晶白云岩型、礁滩型3种类型。利用微观孔隙结构参数,将奥陶系碳酸盐岩评价为4类储层,其中Ⅱ、Ⅲ类储层在目前的工艺技术条件下为可动用储层,是增储上产的首选储层。
According to the characteristics of thin slices, physical properties, pore structure, core analysis and laboratory data, the study on the characteristics of Ordovician carbonate reservoirs in the southwestern Tarim Basin shows that the reservoir space is characterized by fractures and fractures - (Cave) type, of which, the Lianglitage Formation is dominated by fractures, while the Yingshan Formation and Penglaiba Formation are both fractured and fractured-pore (cave) types. Reservoir properties are poor with low Hypertonic features, fractures and dissolution in the pores contribute greatly to the improvement of reservoir permeability. The types of Ordovician reservoir reservoirs are weathered crust, crystalline dolomite and reef beach. Based on the microscopic pore structure parameters, the Ordovician carbonate rocks are classified into four types of reservoirs. Among them, type Ⅱ and Ⅲ reservoirs are reservoirs that can be used under the current technological conditions and are the reservoir of choice for enrichment and yield enhancement .