Fifty percent fpso topsides nigeria produced agip shell

A very specific and technical question!

FPSo stands for Floating Production, Storage and Offloading, which is a type of offshore oil and gas production facility.

Here's what I can gather from your question:

So, to summarize, the question is asking about a specific FPSo project in Nigeria, where Agip and Shell are involved, and the topsides facilities are producing oil or gas, with a 50% ownership or participation stake.

If you're looking for more information on this specific project, I'd be happy to try and help you find it. Alternatively, if you have any more context or details, feel free to share and I'll do my best to provide more insight!