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立足于地质、地震、测井等多学科互相配合 ,利用先进的技术软件 ,进行高精度合成地震记录制作、三维地震精细构造解释、地层层序划分对比、储层反演等综合地质研究 ,揭示了冷家油田冷 12 4 14 30井区储层及圈闭特征 :目的层层位为下第三系沙河街组三段 ,构造复杂 ,发育北东和北西两组断裂 ;发育陡坡型扇三角洲沉积体系 ,可划分为 6种沉积微相 ;储层平均孔隙度为 2 4.5 % ,渗透率 146 3× 10 -3 μm2 ,属于中高孔、高渗储层 ;油藏类型为岩性 构造油藏 ,油水分布受构造、沉积微相等多种因素控制 ,油气主要分布在构造高部位。通过综合评价 ,新发现 4个圈闭 ,部署滚动井 3口 ,增加石油地质储量 34 7× 10 4 t
Based on the multidisciplinary work of geology, earthquake and well logging, the authors use advanced technology software to make high-precision synthetic seismic records, detailed interpretation of 3D seismic structures, stratigraphic sequence comparison and reservoir inversion, revealing Leng Leng Oil Field Cold 12 4 14 30 Reservoir and Trap Characteristics in Well Block: The target layer is the third member of Shahejie Formation of the Lower Tertiary, which has complicated structure and develops faults of the North East and North West. The development of steep-slope fan delta The sedimentary system can be divided into six sedimentary microfacies. The average porosity of reservoirs is 2 4.5% and the permeability is 146 3 × 10 -3 μm 2, which belongs to middle and high porosity and high permeability reservoirs. The reservoir type is lithologic structural reservoir , The oil-water distribution is controlled by many factors such as structure and sedimentary microfacies, and the oil and gas are mainly distributed in the high parts of the structure. Through the comprehensive evaluation, 4 traps were newly discovered, 3 rolling wells were deployed, and the oil geological reserves were increased by 34 7 × 10 4 t