EPSG
Ministry of Oil 2008 licence round.
2010-03-31
Approximate transformation of seismic data acquired before 1985 to CRS used post 1985.
There is some doubt as to whether source CRS is Nahrwan 1967 or Nahrwan 1934. May be emulated using geocentric translations from Nahrwan 1967 to Karbala 1979 of dX=-313, dY=193 and dZ=153m.
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