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以准噶尔盆地西北缘五区南油藏上二叠统乌尔禾组为实例,用二维地震资料进行油藏描述。以油藏框架描述为基础,从工区中选出26条过井多、质量高的二维地震剖面,在斯伦贝谢公司的CHARISMA和CGG公司的INTEGRAL勘探工作站上进行了精细的解释,并综合应用地震、测井、钻试和分析化验等资料描述构造、地层沉积、横向追踪抽气层、反演绝对波阻抗剖面和孔隙度剖面,研究孔隙度平面变化,利用地震多种信息和绝对波阻抗剖面确定气油界面和油水界面。研究所得出的结论与钻探结果是符合的,说明在准噶尔盆地西北缘用二维地震资料进行精细油藏描述是可行的。
Taking the Upper Permian Wuerhe Formation in the southern part of the Fifth Member of the Junggar Basin as an example, the reservoir is described by two-dimensional seismic data. Based on the reservoir framework description, 26 over-well, high-quality 2D seismic sections were selected from the work area and carefully explained at Schlumberger’s CHARISMA and CGG INTEGRAL Exploration Workstations Synthetic application of seismic, logging, drilling test and analysis of laboratory data such as tectonic description, stratigraphic deposition, tracing the suction layer laterally, inversion of the absolute impedance impedance profile and porosity profile, study of porosity changes in the plane, the use of a variety of seismic information and absolute The wave impedance profile determines the gas-oil interface and the oil-water interface. The conclusions obtained by the study are consistent with the drilling results, which shows that it is feasible to use 2D seismic data to describe the fine reservoir in the northwestern margin of Junggar Basin.