The attached dataset consists of eighteen water flooding experiments using microfluidics and captured via a digital camera. The recovered oil is either water wet (mineral oil - colored red) or oil wet (crude oil - beige colored) at three capillary numbers (denoted low, medium, and high). The frame numbers are used as labels for each image. For example, DSC_430 to DSC_435, describes a sequence of 5 frame intervals. The time difference between each frame interval is described in the paper. Our findings confirm that improvements in oil/NAPL recovery are not universal due to the presence of microfractures but rather a function of capillary number, wettability, and microfracture connectivity. Specifically, we identify two distinct conceptual models for viscous fingering propagation within each microfracture/fracture ensemble type. We find that, regardless of wettability, a capillary number threshold for a connected-microfractured system exists beyond which the effects of microfractures on oil recovery, fluid dendrite morphology, and oil ganglia number diminish considerably. However, substantial geometry-dependent differences in oil recovery are observed below the threshold capillary number. Below the threshold capillary number, a microfracture connecting two macrofractures decreases oil recovery and suppresses the coalescence of viscous fingering dendrites regardless of wettability. On the other hand, a dead-end microfracture connected to only one macrofracture gives rise to wettability-dependent effects with (1) minimal impact on oil recovery at water-wet conditions, and (2) both decreasing and increasing recovery effects at oil-wet conditions. Furthermore, dead-end microfractures overall do not considerably impact the divergence of viscous dendrites.