The Coast Guard is enforcing a safety zone around a drilling rig that is on fire after a natural gas well blowout Tuesday morning about 55 miles off the coast of Louisiana. A good Samaritan vessel rescued 44 people from the rig when the blowout occurred, a Coast Guard spokesman said. No injuries were reported. Gas escaping from the well at the Hercules 265 rig caught on fire Tuesday night after the initial morning incident, the Bureau of Safety and Environmental Enforcement reported in its website. “No one was on board at the time of the ignition and no one…