Bristow has had several hijackings in Nigeria...not just the Texaco deal....two crews spent about three weeks each as a guest of the locals before being released.
The best story is when a local type attempted to hijack a 355...to find himself on the skids at several thousand feet up enroute to the platform....as I understand the account he was chilled by the ride and offered only thanks for the ride....
Ah....life in the fast lane!