--> ABSTRACT: Sedimentology and Image-Log Analysis of the Jurassic, Deltaic Plover Formation, Browse Basin, North West Shelf, Australia, by Tovaglieri, Federico; George, Annette; #90142 (2012)
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Sedimentology and Image-Previous HitLogNext Hit Previous HitAnalysisNext Hit of the Jurassic, Deltaic Plover Formation, Browse Basin, North West Shelf, Australia

Tovaglieri, Federico *1; George, Annette 1
(1) School of Earth & Environment, University of Western Australia, University of Western Australia, Perth, WA, Australia.

The Plover Formation in the Browse Basin (Australian North West Shelf) is an Early to Middle Jurassic, syn-rift, deltaic system which hosts reservoirs currently targeted for gas exploration and development. Depositional history and paleogeographical evolution of the Plover Formation in the Calliance field have been established through integrated Previous HitanalysisNext Hit of core, borehole image Previous HitlogNext Hit and wireline Previous HitlogNext Hit data in conjunction with biostratigraphic data. Six facies associations have been identified through facies Previous HitanalysisNext Hit of core and interpreted as tidally influenced channel- and tidal channel-fill complexes (FA1-FA2), crevasse splays and interchannel marshes (FA3), tidal bars and flats (FA4), shoreface (FA5) and offshore-transition to offshore (FA6) depositional settings. Previous HitAnalysisNext Hit of FMI and FMS images reveals sedimentological features that are not visible in core that provide additional information regarding depositional processes and environments. Core-based and image Previous HitlogNext Hit Previous HitanalysisNext Hit shows that the Plover Formation in the Calliance area was deposited on a tidally influenced delta plain to delta front. Tidal processes exerted a fundamental control on the development of porosity and permeability with highest reservoir quality associated with FA1. Previous HitCombiningNext Hit sedimentological results with biostratigraphic data has been used to identify five second-order stratigraphic units bounded by surfaces with Previous HitsequenceNext Hit-stratigraphic significance (~5-9 Ma duration). Integration of the depositional model with sediment dispersal interpretations from paleocurrent data derived from image Previous HitlogNext Hit Previous HitanalysisNext Hit, and identification of major synsedimentary faults from Previous HitseismicTop data, is being used to interpret reservoir geometry of the Plover Formation in the Calliance field which is complicated by volcanic and volcaniclastic facies recording active volcanism during deltaic deposition.

 

AAPG Search and Discovery Article #90142 © 2012 AAPG Annual Convention and Exhibition, April 22-25, 2012, Long Beach, California