Does oil come in barrels?

One of the interesting thing you find about Bruneians is that a lot of us don't know much about oil which is the lifeline of this country. Practically everything we touch in Brunei owes its existence to oil. And yet there is so much about the oil industry that we don't know. All we know now is that the world oil price is about US$70 per barrel. And yet ask this question - how do we export oil?