论文标题
在基于Marchenko的目标区域隔离之后，使用原始和内部倍数提取储层中的较小的延时旅行时间变化
Extracting small time-lapse traveltime changes in a reservoir using primaries and internal multiples after Marchenko-based target zone isolation
论文作者
论文摘要
地下储层的地球物理监测依赖于检测基线和监测研究之间地震反应的微小变化。但是，内部倍数与过度和底层有关，可能会妨碍目标响应的观点，从而使延时分析变得复杂。为了检索没有过度和底层效应的响应，使用了数据驱动的Marchenko方法。该方法有效地隔离了目标响应，然后可以将其用于提取更精确的延时变化。此外，该方法还揭示了与目标相关的倍数，该倍数不止一次探测储层，从而进一步定义了储层中的变化。为了验证该方法的有效性，构建了一个数值示例。该测试表明，当使用孤立的目标响应时，观察到的时间差异类似于储层中的预期时间差。此外，与目标相关倍数获得的结果也受益于基于Marchenko的储层的隔离。因此，得出的结论是，该方法有可能以提高精度观察地下的动态变化。
Geophysical monitoring of subsurface reservoirs relies on detecting small changes in the seismic response between a baseline and monitor study. However, internal multiples, related to the over- and underburden, can obstruct the view of the target response, hence complicating the time-lapse analysis. In order to retrieve a response that is free from over- and underburden effects, the data-driven Marchenko method is used. This method effectively isolates the target response, which can then be used to extract more precise time-lapse changes. Additionally, the method also reveals target-related multiples that probe the reservoir more than once, which further define the changes in the reservoir. To verify the effectiveness of the method, a numerical example is constructed. This test shows that when using the isolated target response, the observed time differences resemble the expected time differences in the reservoir. Moreover, the results obtained with target-related multiples also benefit from the Marchenko-based isolation of the reservoir. It is, therefore, concluded that this method has potential to observe dynamic changes in the subsurface with increased accuracy.
