"The cause of the fire is unknown at this time", Patterson-UTI said in a statement.
An emergency official says five people are missing after an explosion at a drilling rig in the USA state of Oklahoma.
According to the Oklahoma Corporation Commission, the well site is operated by Oklahoma City-based Red Mountain Operating. Skinner said a company that specializes in rig fires and other well control problems also responded to the blaze. "We've activated our emergency response systems and are fully cooperating with first responders and authorities on the scene".
The rig where the explosion is owned by Red Mountain Operating, Enloe said.
Five of those people remain missing.
Pittsburg County Emergency Management says they can't confirm whether anyone has been reported missing, but the emergency management director is at the scene.
Officials tell us the explosion happened in a wooded area.
Emergency officials said Monday they were letting the fire burn itself out and were fighting any flames that went beyond a perimeter they established.More news: Graham to GOP: Give on immigration to get military spending boost
"Pretty much everything that is on location was on fire", Enloe said.
Enloe said no employees were transported to the hospital and one was treated for burns on the scene before refusing transportation.
"Most everybody was taken off the site and taken to a secure site here in Quinton", said Morris, the sheriff.
Smoke billows from the site of a gas well fire near Quinton, Okla., early Monday, Jan. 22, 2018. Morris could not confirm any fatalities or injuries.
The cause of the explosion is still under investigation.
At least three medical helicopters landed at the site, Enloe said. Emergency crews accounted for 17 of them, with five still missing.
The incident occurred about three miles from another explosion that happened a year ago on a site owned by Trinity Operating LLC, located just west of Quinton.