Seismic and sequence stratigraphic study of the Neogene-Quaternary Taranaki Basin, New Zealand: İmplications for reservoir prediction
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- Tez No: 772199
- Danışmanlar: DR. DOMENİCO CHİARELLA, DR. NİCOLA SCARSELLİ
- Tez Türü: Yüksek Lisans
- Konular: Deprem Mühendisliği, Petrol ve Doğal Gaz Mühendisliği, Earthquake Engineering, Petroleum and Natural Gas Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2019
- Dil: İngilizce
- Üniversite: Unıversıty Of London-Royal Holloway
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Jeoloji Ana Bilim Dalı
- Bilim Dalı: Jeoloji Mühendisliği Bilim Dalı
- Sayfa Sayısı: Belirtilmemiş.
Özet
The Taranaki Basin has developed between the Pacific and Australian Plates on the West coast of New Zealand. Sequence stratigraphic and trajectory analysis of NeogeneQuaternary sediments was conducted to better understand the migration and depositional processes of the basin through time. The trends observed are low angle ascending regressive, stationary, high angle ascending regressive and descending regressive trends. In addition, it was observed that the region showed differences in the geometry of the Northern and southern parts after a certain period. The Northwards progradation of clinoforms is observed in the study area, developing during the Plio-Pleistocene period. Twelve different sub-sequences were defined including top-basement. Sub-sequences were defined by 4 different stages, which are related to sea level changes . During stage 2 and stage 4, relative sea level-fall indicates forced regression, and during these two stages, Falling Stage Systems Tract (FSST) is observed. As a result of the sequence stratigraphic study, three systems tracts: FSST, Highstand Systems Tract (HST) and early Transgressive Systems Tract (TST) were defined. Potential reservoirs locations and styles have been predicted based on the systems tract definition. Key probable reservoirs are located in shoreline and shoreface throughout the study area during the predominant period of HST. In the case of FSST, the possible reservoirs are related to deep water submarine fans. Probable reservoirs are in the early TST phase are hypothesised to have developed in low density turbidity flows and debris flows, estuarine deltas and back stepping beaches . The predicted reservoirs may hold significant prospectivity for petroleum, a full analysis of migration pathways and maturity needs to also be conducted.
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