An expandable reel for a well system includes a support frame configured to receive a torque from a motor a plurality of circumferentially spaced spokes each extending radially away from a central axis of the expandable reel, a core assembly configured to couple to the support frame and receive a tubular of the well system about an outer surface of the core assembly, wherein the core assembly includes a plurality of circumferentially spaced panel assemblies each extending longitudinally between opposed ends thereof that are in sliding engagement with the plurality of spokes, and a linear actuator coupled between the support frame and the core assembly and configured to actuate the core assembly, including the plurality of panel assemblies, between a first configuration providing a first outer diameter and a second configuration providing a second outer diameter that is different from the first outer diameter.