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通过测井、岩心和地化分析等资料将华池油田华152井区长3油组划分为16个短期旋回、7个中期旋回以及2个长期旋回。在此基础上,根据三角洲储集砂体在单井和连井上的孔隙度、渗透率、泥质含量等变化,分析了基准面旋回格架内的砂体发育特征。长期基准面下降末期和上升初期可容纳空间高,沉积物供给量大,为厚层连片砂体发育的有利位置,其物性相对较好;长期基准面上升阶段偶见砂体发育,沉积物供给相对不足而可容纳空间极高,沉积砂体物性相对较差,连通性差,且泥质含量偏高。
Based on the data of well logging, core and geochemical analysis, Member 3 of Well No. 152 in Huachi Oilfield is divided into 16 short-term cycles, 7 mid-cycle cycles and 2 long-term cycles. On the basis of this, according to the changes of porosity, permeability and shale content in the single well and the continuous well in deltaic reservoir sand bodies, the sand body development characteristics in the reference plane grid are analyzed. Long-term reference plane and early risen to accommodate the high space, the supply of sediment is large, for the thick contiguous sand body development of a favorable position, its relatively good physical properties; long-term reference surface ascending sand body development occasionally, sediment Relatively inadequate supply of space can be accommodated very high, the sedimentary sand body properties are relatively poor, poor connectivity, and high clay content.