Both companies are part of U.S. energy giant Chevron.

Chevron Romania E&P has permits to explore for shale gas on the Black Sea coast and in the country’s northeastern region of Moldavia.

Chevron has permits to explore for shale gas in three localities in Romania’s eastern county of Vaslui. In early October, the company has received authorization to drill its first well in Silistea. Works were supposed to start Wednesday, but the protesters prevented Chevron bulldozer and excavators from accessing the site.

Chevron announced Thursday it has delayed plans to drill for shale gas at its field in Silistea (Vaslui county), in response to protests against fracking, a controversial process used to extract gas and oil from shale deposits.

The technology consists of pumping a water-sand mixture into underground rock layers to free the trapped oil or gas. (EUR1=RON4.4511)