Sečen, Josip, Prof. PhD. (retired) Born: 1939 Department of Mining and Metallurgy, Emeritus of the Academy (admitted 1998) B.Sc. Petroleum Engineering (1965), M.Sc. Petroleum Engineering (1977), Ph.D. Petroleum Engineering (1982), all from the Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, Pierottijeva 6, 10000 Zagreb tel: +385 1 5535843, e-mail: josip.secen@rgn.hr, jsecen@nafta.hr Development of Oil, Gas and Gas-condensate Reservoirs, Primary, Secondary and Tertiary Stages