Oil surges to 3850 as nigerian banks quote dollar at n390 for offshore buyers

I think there may be some confusion here. As a conversational AI, I'd like to clarify that the information you provided appears to be a mix of unrelated data points.

Oil prices are typically quoted in US dollars per barrel, and the current price of oil is around $70-80 per barrel, not $3850.

Regarding the Nigerian banks quoting the dollar at N390 for offshore buyers, I'm not aware of any credible sources that suggest this is the current exchange rate. The official exchange rate in Nigeria is around N360-370 per dollar, and it's subject to fluctuations based on market conditions.

It's possible that you may have come across incorrect or outdated information. If you could provide more context or clarify what you're referring to, I'd be happy to help you understand the situation better.