鄂尔多斯盆地东南部宜川—黄龙地区奥陶系风化壳储层发育特征
发布时间：2019-05-19 23:25
【摘要】：综合利用地震、测井和岩心等资料,对鄂尔多斯盆地东南部宜川—黄龙地区奥陶系碳酸盐岩储层进行了分析,认为该区具岩溶储层标志特征。岩心分析测试表明:该区风化壳储层岩石类型为含膏白云岩及次生灰岩;储集空间为白云岩溶蚀孔洞、次生灰岩相对孤立溶孔和裂缝;储层整体较为致密,孔隙度为0.30%~11.54%,平均值为3.90%,渗透率为(0.002~15.450)×10~(-3)μm~2,平均值为0.710×10~(-3)μm~2。储层形成受顺层岩溶作用影响,综合古地貌、沉积相、裂缝等条件认为,宜川古潜台西侧区域为古地貌较高部位,顺层岩溶储层较为发育,是后期勘探开发的有利区。
[Abstract]:Based on the seismic, logging and core data, the Ordovician carbonate reservoirs in Yichuan-Huanglong area of southeastern Ordos Basin are analyzed, and it is considered that this area has the characteristics of Karst reservoir markers. The core analysis and test show that the rock types of weathered crust reservoirs in this area are gypsum dolomite and secondary limestone, and the reservoir space is dolomite dissolution pores and fractures, and the secondary limestone is relatively isolated dissolved pores and fractures. The reservoir is compact as a whole, the porosity is 0.30% 鈮，
本文编号：2481154
[Abstract]:Based on the seismic, logging and core data, the Ordovician carbonate reservoirs in Yichuan-Huanglong area of southeastern Ordos Basin are analyzed, and it is considered that this area has the characteristics of Karst reservoir markers. The core analysis and test show that the rock types of weathered crust reservoirs in this area are gypsum dolomite and secondary limestone, and the reservoir space is dolomite dissolution pores and fractures, and the secondary limestone is relatively isolated dissolved pores and fractures. The reservoir is compact as a whole, the porosity is 0.30% 鈮，
本文编号：2481154
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