High-resolution time-resolved synchrotron X-ray micro-tomography datasets of drainage and imbibition in carbonate rocks at reservoir pressure conditions

The datasets contain time-resolved synchrotron X-ray micro-tomographic images (grey-scale and segmented) of multiphase (brine-oil) fluid flow (during drainage and imbibition) in a carbonate rock sample at reservoir pressure conditions. The tomographic images were acquired at a voxel-resolution of 3.28 µm and time-resolution of 38 s. The data were collected at beamline I13 of Diamond Light Source, U.K., with the aim of investigating pore-scale processes during immiscible fluid displacement under a capillary-controlled flow regime. Understanding the pore-scale dynamics is important in many natural and industrial processes such as water infiltration in soils, oil recovery from reservoir rocks, geo-sequestration of supercritical CO2 to address global warming, and subsurface non-aqueous phase liquid contaminant transport. Further details of the sample preparation and fluid injection strategy can be found in Singh et al. (2017). These time-resolved tomographic images can be used for validating various pore-scale displacement models such as direct simulations, pore-network and neural network models, as well as for investigating flow mechanisms related to the displacement and trapping of the non-wetting phase in the pore space.

本数据集包含在储层压力条件下，对多相（卤水-油）流体流动（在排驱和吸收入渗过程中）的碳酸盐岩样本进行时间分辨同步辐射X射线微断层扫描图像（灰度图和分割图）。断层扫描图像以3.28微米的体素分辨率和38秒的时间分辨率获取。数据在英国Diamond Light Source的I13光束线收集，旨在研究在毛细管控制流动条件下，不相混溶流体置换过程中的孔尺度过程。理解孔尺度动力学对于许多自然和工业过程至关重要，如土壤中的水分渗透、从储层岩石中提取石油、利用地质封存技术将超临界二氧化碳进行地质封存以应对全球变暖、以及地下非水相液体污染物迁移。关于样本制备和流体注入策略的更详细信息，可参考Singh等（2017）的研究。这些时间分辨断层扫描图像可用于验证各种孔尺度置换模型，如直接模拟、孔网络模型和神经网络模型，同时也可用于研究孔隙空间中非润湿相置换和捕获相关的流动机制。