Production in IS Oil&Gas

Hello All:

I am a PP Consultant with experience in Discrete, Repetitive and Process Industries scenarios, but I never worked with Oil & Gas so I have pretty basic doubts on that. I have already read a lot in help.sap.com but would like to address you a basic question:

- In PP / PI / REM I have always a cost object (Production / Process Order or Cost Collector) and I saw no such thing in this IS. I am used to see goods issue and goods receipts with this object and I saw In this IS a lot of 309 movements.

So the question is? in Downstream, how do I produce my products? How are they costed if there is no (at least I could not find) cost object?

Can anybody help me with this issue?

Thanks in advance

Luis Henrique