Ministry of Oil 2008 licence round.
Approximate transformation of seismic data acquired before 1985 to CRS used post 1985.
May be emulated using geocentric translations from Nahrwan 1934 to Karbala 1979 of dX=-351, dY=184 and dZ=156m. Other maps give different values - see tfm code 7011.
Iraq - north of UTM 4010000mN (approximately 36°13'N) and east of UTM 400000mE (approximatrely 43°56'E).