If you want to dig into the nuts and bolts of the pipeline infrastructure that exists in the area, this article would be a good place to start.  The maps are amazing.  The spiderweb of pipelines that crisscross the region is pretty dense.  Even more amazing is that they’re building more all the time.  For me, imagining all the manpower that has gone in to and is going in to creating this infrastructure is mind blowing.