How are oil rigs built?

Oil rigs are typically built in a series of stages, beginning with design and engineering to determine the rig's specifications based on its intended environment and purpose. Construction usually takes place in shipyards or specialized fabrication facilities, where steel components are manufactured and assembled. Once the structure is complete, it is towed or transported to the drilling site, where it is anchored or secured for operations. Final assembly and testing are conducted on-site to ensure the rig is fully operational before drilling begins.