OPEC has used this tactic many times before. An unsettled market, even when they lose money due to their policy is to their advantage in the long run.
Oil is a global commodity. OPEC is intentionally depressing prices with their continued production levels to break competitors, much like the gas wars of old.
No good comes of unstable markets. Enjoy for now cheap gas, we will all pay dearly later when they cut production to force prices up as they have done several times since the embargo of '73.
Volatility is their friend, our foe is our reliance on energy resources that are not within our borders or with our neighboring Nations.