This paper gives a comprehensive overview of the long time experience of the authors´
company regarding these considerations: one large oil field developed about 50 years ago in
Austria and 4 gas fields, two of them in Austria and two in Pakistan are described. The
different gas fields have been successfully developed and brought on stream between 1967
and 2003. These gas fields do not only vary in their geographical position, but also in gas
compositions, the dates of production start, and the location of gas dehydration units.