This is all new information to me @michaelwrites. And you certainly met your promise: you made this a practical and readable content, even for novices like me.
Besides learning all the processes oil goes through before it becomes something useful for everyday life I also found interesting to learn a little about the financial side of this industry!
Thank you for taking the time to inform us all about this :)
Thank you @abigail-dantes for finding the post practical enough; this trounced all what I'd sum the post to be on it readability. I've myself been drawn to this particular sector of all because of the profit and popularity attached to it.
You may want to make this practical enough by visiting a refinery or going over to a depot. 😃