Indeed, like OPEC raising prices, demand, etc.

Mostly.
I would say that from my time following the crude market, the releases from OPEC had little effect over price movement compared to Federal Reserve policy, geopolitical current events, and even natural disasters. Now that the FED has essentially added QEinfinity to their clownish mandate, those prices will definitely go higher. The FED serves the big banks; the biggest joke and lie I have heard from Washington is that they "regulate" them. The FED will loan to the large banks with their zero interest rate policy, and then they will turn around and speculate in commodities or interest rate derivatives to earn their massive profits -- which are usually conducted by high frequency trading scams. Yeah, maybe some of that cash will be put into other types of bonds, but who cares. There will always be higher pressure on commodity prices with the FED in charge, along with a government that is unable to curtail spending.
And even if they incur massive losses in derivatives, they will still be upheld by the "regulatory" FED.
This is the biggest issue we face today as a nation. But unfortunately, these policies are supported by the Republicans and ALL Democrats, which is why your vote truly does not matter and probably never will.