FIB-SEM and X-ray micro-tomographic images of carbonate rock dissolution during reactive CO2-saturated brine injection under reservoir conditions

The datasets contain FIB-SEM and X-ray micro-tomographic images of a wettability-altered carbonate rock sample before and after dissolution with reactive CO2-saturated brine at reservoir pressure and temperature conditions. The data were acquired with the aim of investigating CO2 storage in depleted oil fields that have oil-wet or mixed-wet conditions. Our novel procedure of injecting oil after reactive transport has revealed previously unidentified (ghost) regions of partially-dissolved rock grains that were difficult to identify in X-ray tomographic images after dissolution from single fluid phase experiments. The details of image files and imaging parameters are described in readme file.

本数据集包含经二氧化碳饱和盐水在储层压力和温度条件下溶解前后，碳酸岩样品的场发射扫描电子显微镜（FIB-SEM）和X射线微断层扫描图像。数据采集的目的是研究具有油湿或混合湿条件的枯竭油田中的二氧化碳储存。我们创新的注入油液后的反应传输程序，揭示了先前未被识别的（幽灵）区域，即部分溶解的岩石颗粒，这些区域在溶解后的单流体相实验中的X射线断层扫描图像中难以辨认。图像文件及成像参数的详细信息见readme文件。