Brussels, 27/06/2008 (Agence Europe) - From 29 June to 3 July 2008, Madrid will be hosting the 19th World Petroleum Congress (WPC), to be attended by EU Energy Commissioner Andris Piebalgs, OPEC Secretary General Abdallah Salem El-Badri, the managing director of the International Energy Agency - Nobua Tanaka, and the heads of energy companies, including Royal Dutch Shell, ExxonMobil, Conoco Phillips, Total, Repsol, Cespa, Pemex, CNOOC, Schlumberger and Petrobras. Russian energy companies...