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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。
The OUED MYA Petroliferous Basin Block 438B, Algeria, aims to exploit deep, low-amplitude structural-lithologic composite reservoirs. In order to recover oil and gas in this block and increase production, the paper analyzes the characteristics of seismic data with low resolution and low signal to noise ratio, and synthetically uses the seismic attributes such as amplitude, phase and frequency to explain the layers and faults. Based on the structure of variable speed structure; implementation of the low amplitude structure, clear the distribution of structural belt law. At the same time, the application of wave impedance inversion, spectral decomposition, hydrocarbon detection and other attribute extraction and analysis techniques have determined the possible distribution range of reservoirs and hydrocarbons, and achieved good results. The first well received high-yield oil and gas flow, opened the area exploration situation.