Kuwait's state-run oil company says an oil spill has struck an onshore field.

The Kuwait Oil Company says in a statement on Tuesday that workers were trying to contain the spill at the Ahmadi field. The company says the spill struck at its BWD-133 drilling rig.

The company did not offer any details on how much oil had been spilled or if the spill was ongoing. It said no workers had been injured in the incident.

In February, a fire erupted at an oil well in northern Kuwait after an oil spill.

Tiny OPEC member Kuwait is a major oil producer. The U.S. Energy Information Administration says Kuwait produces some 2.8 million barrels of crude oil a day and holds the world's sixth-largest oil reserves.