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3D Paleo-Environmental Facies And Petrophysical Properties Of Mangahewa Formation, Maui Gas Field, New Zealand
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE Conference on Reservoir Geoscience, Dec 2018, Volume 2018, p.1 - 5
Abstract
Maui Gas Field is the largest producing field in New Zealand having Mangahewa Formation as the thickest reservoir of this field. According to the study Marginal marine was interpreted to be the dominant depositional environment of the formation as a whole having about 64% of depo-facies; whereas shallow marine environment comprised about 29% and offshore comprises 7% of the depo-facies modeled within the Mangahewa Formation, Maui Gas Field. Paleoshoreline reconstruction of the facies modeled that ttransgression occurred from older deeper to the younger shallower layers within the model. Paleoshoreline was interpreted to have a broad North-East to South-West trend within the model along with their internal migration over time.
Whereas the petrophysical model of the formation correlated positively with the paleo-depositional model and petrophysical maps of Mangahewa reservoir parameters reveal that, the most favourable location for the producing reservoir is the east-central part of the gas field.