China's ragtag shale army a long way from revolution

China's plans to unlock what could be the world's biggest shale gas reserves risk running further off track after 16 firms awarded exploration rights in the latest auction lacked one core skill - not one has drilled a gas well before.

Beijing is hoping shale gas can transform the country in the same way as the U.S. boom, though to date there has been little commercial production and a target of producing 6.5 billion cubic meters of gas by 2015 in the world's biggest energy consumer looks out of reach, according to industry experts.