【摘要】 塔里木盆地塔河油田S108井区奥陶系一间房组是碳酸盐岩裂缝性油气藏。依据钻井、录井、取心、FMI成像测井以及常规测井,对裂缝进行识别。塔河油田S108井区的裂缝有构造缝、溶蚀缝和压溶缝,以构造缝为主,构成裂缝网络主体。裂缝发育期次有3期:海西早期、海西晚期和印支—燕山期,最重要的一期裂缝发育于海西晚期。利用三维地震资料,通过振幅变化率、相干体分析和波阻抗反演技术,预测S108井区一间房组裂缝发育带。S108井区奥陶系一间房组裂缝分布极不均匀,平面上主要发育在S108井区北部,受区域性断裂控制,两组不同方向断裂交会处和地层曲率最大处裂缝发育;垂向上主要集中于一间房组顶面以下50 m内,向下裂缝发育程度降低。更多还原

【Abstract】 The Ordovician Yijianfang Formation in the S108 area of the Tahe Oil Field of the Tarim Basin is carbonate fracture reservoir.Based on drilling,logging,core description,FMI and well log,fractures have been identified.The fractures in the area include structural,dissolution and subtractive original ones,among which the structural ones constitute the main portion of fracture network.Fracture evolution has experienced 3 stages: the Early Hercynian,the Late Hercynian,and the Indosinian-Yanshanian.The most important stage is the Late Hercynian.Thanks to 3-dimensional seismic data,with amplitude change rate,coherent body analysis and impedance inversion technique,fracture zone of the Yijianfang Formation in the S108 area has been predicted.The fracture distribution is very uneven.Horizontally,fractures controlled by regional fault mainly locate in the northern S108 area.Vertically,fractures concentrate 50 m below the top of the Yijianfang Formation,and decrease downwards.更多还原