The travel time of seismic reflection signal is affected by the changes of surface and low velocity zone, and static correction method based on hyperbolic hypothesis will be seriously affected; It is very important to use effective static correction methods to eliminate the influence of surface undulation and low velocity zone. We use a variety of static correction strategies to obtain accurate static correction.
◆ Fine first break pickup
◆ Determine the refraction layer by combining well and seismic
◆ Multi-algorithm offset optimization
◆ Well constrained tomography velocity inversion
◆ Top surface of high-speed layer adjustment
◆ Iterative inversion
◆ Global/local quality control of static correction
◆ Application effect evaluation
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微测井速度结果 | 井约束层析速度反演 |
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蓝色：直接层析反演炮点静校正量 | 红色：井约束层析反演炮点静校正量 |
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蓝色：直接层析反演检波点静校正量 | 红色：井约束层析反演检波点静校正量 |
井约束层析反演和直接层析反演静校正量对比 | |
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原始叠加 | 直接层析静校正叠加 | 综合静校正叠加 |
综合静校正效果对比 | ||
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