"Oil subdued on high OPEC supplies, rising U.S. production" - http://www.reuters.com/article/us-global-oil-idUSKBN1AK04P
Although one would assume with falling prices that production would stall, in fact the opposite, US production has grown as demand has still grown, but OPEC production has also grown with increase in supply from African countries.
This raises questions on how long can OPEC maintain the cuts in production, and if they may attempt to crash the market again to hamper alot of investment in the oil industry in the US.
On another point, is US production tied to existing Wells or to newly explored Wells. Is exploration and installment of new infrastructure growing or are US suppliers trying to survive in their existing infrastructure.