|The oil rig is 270km off the coast of Aberdeen|
A spokesman for the Kinloss Royal Air Force base in Scotland, which had aircraft involved in the operation, said: "It is understood the incident was sparked by comments made by a woman on the installation."
A police spokeswoman said that no one had been arrested, but a 23-year-old British woman was being taken ashore for questioning.
The incident had been "very quickly contained from a police point of view," the spokeswoman said.
About 14 helicopters and a Nimrod reconnaissance aircraft were sent to the Safe Scandinavia platform in the Britannia oil field.
A statement said that the workers were being returned to the oil rig.
The platform is owned and operated by Oslo-listed company ProSafe.
Source: Al Jazeera and agencies