Kuwait Oil Company said on Friday that it had contained a "limited" fire on a gas pipeline at its Burgan field in the Gulf state.
The company said in a statement that four workers had suffered burns and bruises in the incident.
They were taken to hospital for treatment, the statement published by state news agency KUNA added.
KUNA said firemen working for Kuwait Oil Company took an hour and a quarter to put out the blazes after isolating the damaged pipeline.
Operations of the company were not disrupted, it added.
The company said a panel will be set up to investigate the accident, to determine its causes and avoid a recurrence.
Subscribe to Arabian Business' newsletter to receive the latest breaking news and business stories in Dubai,the UAE and the GCC straight to your inbox.