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首页> 外文会议>Geothermal Resources Council Annual Meeting >Prediction of Seismic Observables from Geothermal Reservoir Simulations
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Prediction of Seismic Observables from Geothermal Reservoir Simulations

机译：地热储层模拟地震观测的预测

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摘要

We have developed a seismic postprocessor for use in connection with numerical geothermal reservoir simulations. The seismic postprocessor is designed to predict temporal changes in seismic properties and the resulting changes in seismic observables such as travel time, attenuation and reflections that are caused by subsurface changes in the geothermal reservoir. The changes to seismic properties are predicted using Biot theory and empirical relationships. Changes to observables are then predicted by calculating the propagation of seismic waves through this structure. Since the geothermal simulation is in general performed on a coarse grid relative to the resolution required for seismic simulations, an interpolation scheme is developed to optimize prediction of observables and avoid artifacts induced by the coarseness of the geothermal grid. The seismic postprocessor can be used to predict the results of passive seismic surveys, reflection surveys, VSP surveys, and crosshole tomography surveys.
机译：我们开发了一种地震后处理器，用于与数值地热储层模拟有关。地震后处理器旨在预测地震性质的时间变化以及由地热储存器中的地下变化引起的行驶时间，衰减和反射所产生的地震观察结果的时间变化。利用BIOS理论和经验关系预测地震性质的变化。然后通过计算通过该结构的地震波的传播来预测对可观察到的变化。由于地热模拟通常在相对于地震仿真所需的分辨率上对粗网格进行，因此开发了插值方案以优化观察到的预测，并避免地热网格的粗糙度引起的伪影。地震后处理器可用于预测被动地震调查，反射调查，VSP调查和交叉孔断层扫描调查的结果。

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