Reservoir integrity stewardship accompanying carbon capture and sequestration considers fluid extraction and reinjection as a risk-mitigating method against overpressuring that could lead to caprock damage and ensuing ${\mathrm{CO}}_2$ leakage. Crosswell electromagnetics offers a technically viable monitoring method with the spatial volume coverage necessary for reservoir-encompassing pressure management. However, a certain logistic dilemma for deep gas sequestration into saline and thus electrically conductive aquifers is that crosswell magnetic-field measurements underperform in the imaging of more resistive plume bodies, further exacerbated when vertical arrays intersect, as opposed to surround, plumes. Comparative synthetic-data plume imaging of such scenarios rates the information content of magnetic-field versus electric-field 3D crosswell layouts for reservoir and infrastructure conditions of a representative pilot site in a coastal area in Florida. The image quality of the resulting plume replications can be ranked numerically through a newly proposed semblance qualifier, appraising the model goodness of fit to a given reference. In contrast to common least-squares measures for goodness of fit, the semblance formulation uses classifying logistic function types, thus enabling a better distinction of predefined anomaly features.

中文翻译：

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一种适用于比较图像评估的技术：在井间电磁测井设计中用于流体监测

伴随碳捕获和封存的储层完整性管理将流体抽取和再注入视为缓解超压的风险的方法，该超压可能导致盖层破坏和随之而来。 ${\mathrm{一氧化碳}}_{\mathrm{2个}}$泄漏。Crosswell电磁技术提供了一种技术上可行的监测方法，具有涵盖储层的压力管理所需的空间体积覆盖率。但是，将深层气体封存到盐水中从而导电的含水层存在一定的逻辑难题，那就是在更具电阻性的羽状体成像中，井间磁场测量的性能不佳，而垂直阵列相交而不是环绕羽状，则加剧了这种情况。此类方案的比较性合成数据羽流成像可对佛罗里达沿海地区代表性试点的油藏和基础设施条件下的磁场与电场3D井间布局的信息含量进行评估。可以通过新提出的相似性限定符对所得羽状复制品的图像质量进行数字排名，从而评估模型对给定参考的拟合优度。与一般的最小二乘拟合优度相反，相似度公式使用对逻辑函数类型进行分类，从而可以更好地区分预定义的异常特征。