OPEC spare capacity, rig count and the big picture

``There has been much speculation on these blog pages about the existence of OPEC spare capacity. The oil rig count for Saudi Arabia, Kuwait, Abu Dhabi and Qatar (SKAQ) provides some clues. The sharp rise in operational oil rigs in February 2011 suggests to us that usable spare capacity does not exist and that new useful capacity (light sweet?) must be built by drilling new wells. This takes time. It also suggests that there is goodwill among these OPEC members to try and boost supply to tame oil prices.''