Geological controls on petroleum reservoir quality of the North Cape Formation, Taranaki Basin, New Zealand
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Abstract
Taranaki basin is the petroleum production basin along the western side of New Zealand. The main production fields have been located along the marginal zone from Cenozoic reservoirs. However, Cretaceous sandstones within the North Cape Formation which deposited in sub-basin at the initial phase of basin formation might be potential reservoir in the deepwater area. In this study, well log data are used to investigate the potential reservoir of the North Cape Formation. The reservoir properties of the North Cape Formation exhibit that the porosity is between 10% and 27% and permeability is up to 700 mD. The porosity of sandstone in this formation is increased basinward. Barrier bar sandstone shows the highest porosity compared to channel and tidal flat sandstones. The North Cape Formation sandstone has potential to become a reservoir especially in the deepwater area. The main factors controlling reservoir properties are depositional environment and degree of compaction.
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Copyright © 2008 Department of Geology, Faculty of Science, Chulalongkorn University. Parts of an article can be photocopied or reproduced without prior written permission from the author(s), but due acknowledgments should be stated or cited accordingly.
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