Clearly todays inventory data showed fall in reserves of inventory. So when inventory data is less it implies that lot of crude which was saved up as reserves were put to use or in other words consumed. Now I want to shift your attention to this term " PRODUCTIVITY OF A COUNTRY " When crude is consumed like the data shows it means productivity of a country is increasing. Productivity increasing means people are working , indicating cash flow. THUS WHEN INVENTORY DATA IS LESS IT SHOWS THAT PRODUCTIVITY INCREASES WHICH IS WHY CRUDE RISES.