Preprint Article Version 1 This version not peer reviewed

Three-Dimensional Facies Analysis using Object-Based Geobody Modeling: A Case Study for the Farewell Formation, Maui Gas Field, Taranaki Basin, New Zealand

Version 1 : Received: 13 January 2018 / Approved: 15 January 2018 / Online: 15 January 2018 (10:01:00 CET)

How to cite: Haque, A.E.; Islam, M.A.; Shalaby, M.R. Three-Dimensional Facies Analysis using Object-Based Geobody Modeling: A Case Study for the Farewell Formation, Maui Gas Field, Taranaki Basin, New Zealand. Preprints 2018, 2018010123 (doi: 10.20944/preprints201801.0123.v1). Haque, A.E.; Islam, M.A.; Shalaby, M.R. Three-Dimensional Facies Analysis using Object-Based Geobody Modeling: A Case Study for the Farewell Formation, Maui Gas Field, Taranaki Basin, New Zealand. Preprints 2018, 2018010123 (doi: 10.20944/preprints201801.0123.v1).

Abstract

The early-mid Paleocene Farewell Formation is stratigraphically distributed across the southern Taranaki Basin (STB) which is also encountered within the Maui Gas Field. Using available 3D seismic and well log data, a challenging task to delineate the spatial distribution and geobody patterns of the potential reservoir sands of the formation was performed. Object based modeling coupled with sequential indicator simulation were used to analyze the spatial distribution of facies configuration and a conceptual model was developed based on the outputs from the structurally- modeled grids. The facies modeling followed a hierarchical object-based mechanism which was set to perform with constraints like channel geometry and heterogeneity within the formation. The resultant 3D geobody model showed that the distributary channels, mainly braided geobodies flowed from northeast cutting through several regional normal-fault systems to the southwest. Overbank facies was adhered to the fringe of the channels whereas the floodplain facies was at the periphery of the model. Meandering channel-sand facies were mostly observed at the center of the model flowing in a more random manner, occupying major flow directions of northwest to southwest and southeast to northwest within the model.

Subject Areas

geobody modeling, object-based facies modeling (OBFM), variogram analysis, farewell formation, paleo-depositional environment

Readers' Comments and Ratings (3)

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Comment 1
Received: 29 January 2018
Commenter: Sara Fatima
The commenter has declared there is no conflict of interests.
Comment: Awesome
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Comment 2
Received: 11 February 2018
Commenter: Nahidul Islam
The commenter has declared there is no conflict of interests.
Comment: Nicely written manuscript. 3D geomodeling logics are in line with the subsurface interpretation. Best of luck.
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Comment 3
Received: 11 February 2018
Commenter: Nahidul Islam
The commenter has declared there is no conflict of interests.
Comment: Well supported with subsurface evidences and geomodeling approach.
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