EU worried as the only continent dependent on energy imports

EU leaders summit in Brussels on Wednesday, Ceramic proppant shale oil extraction on the EU's plan was discussed.

Compared with the U.S., European energy expensive. The new shale oil and gas resources of the United States energy prices low.frac proppant Hosted the summit of the European Council President Herman Van Rompuy said that the European fear of becoming the only continent dependent on energy imports.

However, the production of oil shale are also potentially high risk environments. Critics argue that, through the hydraulic fracturing method, it is to use hydraulic fracturing the rock to release oil and gas extraction method will be a threat to water resources,unconventional gas and may even cause earthquakes.