【摘要】 柴达木盆地扎X井区目前是扎哈泉区块产量的主要贡献区,也是后期建产重要的潜力区。通过对X井区上新统下油砂山组Ⅳ油层组综合研究,认为其属于中孔中低渗储层,处于中成岩阶段A期。压实作用对储层物性的影响较小,胶结作用是孔隙减小的主要原因,溶蚀作用对孔隙的增加有一定的建设作用。更多还原

【Abstract】 The Zha-X well area in the Qaidam Basin,Qinghai is currently interpreted as the main production area in the Zhahaquan block,and also an important potential area for the future production. The integrated studies show that the Ⅳ oil reservoirs of the Pliocene Xiayoushashan Formation in the Zha-X well area have mesoporosity and moderate to low permeability and are assigned to the anadiagenetic A stage. The diagenetic types include compaction,cementation and dissolution. The compaction may exert the limited effects on the physical properties of the reservoir rocks. The cementation is responsible for the decrease of the porosity of the reservoir rocks while the dissolution may have constructive effects for the generation of the secondary porosity of the reservoir rocks in the study area.更多还原