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对大地电磁测深法探测构造油气藏的有效性进行研究,结合南方某区块的复向斜地质背景,建立了接近实际层状介质的背斜和向斜构造地电模型,再利用数值模拟的方法,计算模型在给定频率下的大地电磁测深正演响应。对比分析两类模型数值模拟的结果后表明:大地电磁测深法对向斜和背斜构造层序有较为清晰的分辨效果,其能够在复杂地质条件下为油气构造的反演解释提供参考依据。
Based on the study of the effectiveness of geomagnetic electromagnetic soundings to detect structural reservoirs and the anticlinorial geologic setting of a block in southern China, a geoelectric model of anticline and syncline structures close to the actual layered media was established. Then, numerical simulation The method is used to calculate the forward response of the model to the electromagnetic sounding at a given frequency. Comparing and analyzing the results of numerical simulation of two kinds of models, it is shown that the geomagnetic electromagnetic sounding method has a clear resolution effect on syncline and anticline tectonic sequence, which can provide reference for the inversion interpretation of oil and gas structures under complex geological conditions .