Workover /drilling rig with floor drainage system

A spill container to be mounted below a rig floor, comprising:

• a first circular ring mounted to the rig floor;
• a collapsible concave container mounted to the circular ring, having an open top for catching fluid spilled on the rig floor, and a circular bottom opening adapted to receive a tubular member extending through the rig floor and downward below the concave container;
• side walls of the concave container from the open top to the circular bottom opening;
• the open top of the concave container having a plurality of hangers extending there about to mount to the circular ring;
• an outer circumference of the open circular bottom opening having a plurality of hooks attached thereto for mounting to a second circular ring;
• and
• one or more drains mounted in the sidewalls near the circular bottom opening so that fluid collected in the concave container is directed into a conduit, which is securely mounted at one end to the one or more drains and at an opposite end to a storage tank.