OVERVIEW

An integrated sedimentological and palynological core study that focuses on four wells with core over the reservoir intervals of the Late – Middle Triassic of the Bedout Sub-basin: Phoenix 1 (Solander and Barret members), Phoenix 2 (Barret Member), and Roc 2 (Caley Member) in the Bedout Sub-basin, and Bruce 1 (Barret Member) in the adjacent Beagle Sub-basin.

This study builds upon MGPalaeo’s palynological review of the Triassic of the Bedout Sub-basin by incorporating new observations and RCA data to refine our understanding of Triassic depositional environments. The study includes detailed sedimentological descriptions, new quantitative palynological analyses, and an updated stratigraphic and palaeoenvironmental framework to support future exploration efforts.

BACKGROUND

Located offshore Western Australia, the Bedout Sub-basin has become a key area of interest for hydrocarbon exploration following a series of major discoveries. The Dorado oil field, uncovered in 2018, stands as the largest oil find on the North West Shelf in over 30 years, with an estimated 162 million barrels of light oil and condensate, plus significant gas volumes.

More recently, the Pavo-1 discovery in 2022 confirmed the sub-basin’s strong potential, uncovering 46 meters of net oil pay with excellent reservoir quality. Collectively, these discoveries underscore the Bedout Sub-basin’s growing strategic importance for future energy development.

DETAILS

This integrated core study follows on from our palynological review of the Triassic of the Bedout Sub-basin and combines sedimentological core descriptions with additional palynological analysis to produce depositional environmental interpretations from four wells: Roc 2, Phoenix 1, Phoenix 2 and Bruce 1 (Figure 1).

A total of 119.38 m of core from Roc 2 and 54.45 m of core from Phoenix 1, Phoenix 2 and Bruce 1 were described and integrated with 31 available palynological core samples from Roc 2 and fourteen new samples taken in Phoenix 1 and Phoenix 2.

Figure 1: Location of wells included in this multi-client study.

DELIVERABLES

  • Detailed core description of for all wells (173.83 m)
  • Litho- and depofacies descriptions, including core photography
  • Porosity / Permeability plots for Phoenix 1, Phoenix 2 and Bruce, as well as comparison between Phoenix 1 and Phoenix 2
  • Interpretation of depositional environments
  • Tabulated palynological sample summaries
  • Stratigraphic summary chart for each well including age, palynological zones and events, lithostratigraphy, shifted / unshifted cored interval and depofacies, all set against wireline log data.

For more information on this integrated study, including pricing, please contact us.