Three phases of Gippsland offshore development can be recognised. In the initial phase, the largest oil fields, because of their excellent reservoir quality, were developed simply with low angle wells located crestally draining large reserves. Fields in the second phase have required more costly and complex developments including high angle or deep wells because of field geology and hydrocarbon distribution. Reserves in these fields are substantially lower.

A third phase has commenced in which some of the many small fields remaining will be developed via mini platforms, subsea satellites and single-leg structures, to partially offset the rapidly declining production of the earlier fields.

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