【摘要】 阿尔及利亚OUED MYA含油气盆地438B区块勘探目标以大深度、低幅度构造—岩性复合油气藏为主。为了在该区块重获油气,增储上产,本文针对地震资料分辨率低、信噪比不高的资料特点,综合运用振幅、相位和频率等地震属性解释层位和断层;在速度分析的基础上进行变速构造成图;落实了低幅度构造,理清了构造带的展布规律。同时运用波阻抗反演、谱分解、烃类检测和其他属性提取与分析技术确定了储层和油气可能的分布范围,取得了良好的效果。首口钻井即获高产油气流,打开了该区的勘探局面。更多还原

【Abstract】 The 438 B block of Algeria OUED MYA oil-bearing basin is characterized by deeper and low-amplitude structural-lithologic composite oil/gas reservoir.In order to regain oil and gas and improve reserve and production in the block and in view of the data characters of low seismic data resolution and lower S/N ratio,the paper integrative usage of such seismic attributes as amplitude,phase and frequency to interpret strata and fault,carry out variable velocity mapping on the basis of velocity analysis;define low-amplitude structure and clarify the distribution law of structural belt.At the same time,Using wave impedance inversion,spectrum decomposition,hydrocarbon detection and other attributes detective and analytic techniques to study the possible distribution range of reservoir and oil/gas,achieving good results.The high-productive oil-gas stream has been acquired in first drilling,opening up the phase of exploration in the range.更多还原