【摘要】 先巴扎工区石炭系小海子组(C2x)是以碳酸盐岩为主要储集层的一套海相地层,经多次成岩作用形成。区内以碳酸盐岩成岩作用形成的缝、洞型储层为主要储层类型。通过对C2x碳酸盐岩储层的岩石、地层、储集空间类型、物性及岩电特征的分析,结合反演资料对储层特征做了分析,C2x分上下两层的特征比较明显,局部地方甚至可以分三层。主要储层砂屑灰岩、生屑灰岩的波阻抗值在1300~1500kg/(cm2·s)之间。结合地震属性资料及反演阻抗值分析,对BT6井附近解释的异常体,预测为C2x中部层段的孔隙性生屑灰岩,为工区的有利储层。该成果也为下步勘探指明了方向。更多还原

【Abstract】 The Xianbaza Area of Carboniferous Xiaohaizi Formation(C2 x)was a set of marine strata with carbonate rock as main reservoir,it was formed by multiple diageneses,the reservoir types were mainly consisted of fractured and caved reservoirs created by carbonate diagenesis.Through the analyses of rock,formation,carbonate reservoir space types,physical properties and electrical characteristics of rocks,the reservoir characteristics were analyzed combined with seismic inversion data.It could be seen clearly that C2x was consisted of two layers.Part of it can be seen as three layers.The sand-cutting and bioclastic limestones were main reservoirs with their wave impedance value of 1300~ 1500kg/(cm2·s).Combined with seismic data and inversion of impedance value analysis and the anomaly interpretation of near areas of Well BT6,it can be predicted that C2 x middle layer of the bioclastic limestone is a favorable reservoir,which provides the direction for the next exploration.更多还原