geoscience australia’s · organic geochemistry, sedimentology & palynological laboratories...

Geoscience Australia’s

Petroleum Program

Maturity (Ro%) Gas expelled(Bcf/km2)

Geoscience Australia

GA's Petroleum Program and Acreage Release Process

AUSTRALIAN GOVERNMENT The Hon Matt Canavan MP

Department of Industry, Innovation and Science

Geoscience Australia

Canberra offices

~ 600 employees Organic geochemistry, sedimentology & palynological laboratories National data repository

Geoscience Australia: • Australia's pre-eminent public sector geoscience organisation • the nation's trusted advisor on the geology and geography of Australia • applies science and technology to describe and understand the Earth for the benefit of Australia


Organisation Structure

Dr James Johnson

A/g Adam Lewis

Onshore Hydrocarbons

Resources Division (Chief: Dr Andrew Heap)

Roebuck/Beagle Triassic

Study

Offshore Frontiers

Acreage Release & Prom.

Petrol., Coal & GHG Advice

Mineral Resources & Prom.

Resource Assessments

Continental Geology

Regional Drilling

Geochronology

Mineral Systems

Regional Integration Studies

Australian Source Rocks

Pre-competitive Data

Hydrocarbon Prospectivity

Resource Potential

Unbiased Scientific Advice

Attraction of New Investment

Strong Stakeholder Engagement

Energy Systems Mr Andrew Barrett

Res. Advice & Promotion A/g: Dr Martine Woolf

Mineral Systems Dr Richard Blewett


Our Role:

Attract exploration investment to Australia by building a prospectus of energy resource potential

Exploring for the Future

• A major new

investment initiative in

pre-competitive

geoscience from the

Australian Government

(Minister for Resources

and Northern Australia)

• Federal Budget

measure of $100.5

million over 4 years

(2016 to 2020)

• Comprises three

integrated elements: • Energy

• Minerals

• Groundwater

© Commonwealth of Australia (Geoscience Australia) 2018

• GA is also undertaking a major pre-competitive program across northern Australia

• Energy related data acquisition includes new seismic

data and stratigraphic drilling in:

• McArthur and related basins of Proterozoic

and old Paleozoic age (e.g. South Nicholson)

• Kidson sub-basin of the Canning Basin


Precompetitive Information

and Data Themes Nationwide Overview Studies

Inventory of Frontier Basins Stratigraphic Frameworks

Regional Integration Studies NW Shelf Tectonic Framework Australian Source Rock Atlas Palaeogeographic Studies

Frontier Basins

North Houtman seismic survey Lord Howe Rise IODP

CO2 Storage Projects

Pre-competitive data relevant to petroleum


NW Shelf Tectonic Framework

Gippsland seismic survey

Browse Petroleum Systems

Houtman seismic survey

Stratigraphic Frameworks

Australia’s offshore frontier basins

Inventory of Offshore

Frontier Basins


• Comprehensive assessment of:

• Geology

• Petroleum systems

• Exploration status

• Data coverage

• 35 offshore basins and sub-basins

• Analysis of the critical exploration and geoscientific questions

• Recommendations for future work

Download from: www.ga.gov.au

• Onshore inventory Vol.1 published

http://www.ga.gov.au/

Stratigraphic Frameworks


• Regularly updated regional basin biozonation charts

• Data packs available – Timescale Creator software

• Available for 12 basins

Download from: www.ga.gov.au

http://www.ga.gov.au/

The 2018 Acreage Release Areas

2017 Acreage

Release Areas

Current

Permit


Energy Frontiers Frontiers

Northern Houtman Sub-basin Prospectivity Study

• Two frontier blocks (W17-9 and W17-10) released for acreage in 2017

• Results of the study summarised in a number of publications (links available on GA website)

International Ocean Discovery Program (IODP):

1. Lord Howe Rise Deep Stratigraphic Drilling

• Data from first site survey 2016 released

• Second site survey completed late 2017

• Developing a funding model for drilling with Chikyu

2. Mentelle and Bight Basin Drilling (IODP expedition 369)

• Drilling completed in December 2018

• Data analysis and contribution to collaborative studies


www.jamstec.go.jp/chikyu/eng/CHIKYU/status.html

http://www.ga.gov.au/about/projects/resources/lord-howe-rise

Northwest Margin Energy Studies

Roebuck and Beagle Triassic Study

• Improved understanding of the nature and distribution of Triassic and older source rocks based on a new integrated study of sequence stratigraphy, biostratigraphy, geochemistry and seismic mapping

• Possible identification of new petroleum systems

• Delivery of new source rock data (web-based and GIS supported)

Browse Basin Petroleum Study

• Improved understanding of the hydrocarbon composition to determine gas/liquid potential

• Insights into extension of known petroleum systems to new areas and play types

• Delivery of new source rock data (web-based and GIS supported)


Browse Basin: W18-2 and W18-3 (closing 21 March 2019)

• Large resource base of natural

gas and condensate

• Condensate and LNG

production about to commence

(Ichthys, Prelude)

• Acreage located in highly

prospective Caswell Sub-basin

• Geoscience Australia’s new

study highlights distribution of

petroleum systems and

confirms hydrocarbon potential



• All source rocks in the Caswell

Sub-basin are sufficiently mature to

generate hydrocarbons

• Main source–reservoir lithologies

are hosted by Plover and Vulcan

formations (Lower - Middle Jurassic;

Upper Jurassic - Lower Cretaceous)

• Majority of expulsion occurring from

Late Cretaceous to present

• Gas-prone source rocks are

dominant, but liquids (light oil) can

accumulate in low pressure

reservoirs

• Caswell-1 recorded oil and gas

shows, located in W18-3.

Vu

lca

n F

orm

ati

on

P

love

r F

orm

ati

on

Transformation ratio

Transformation ratio Maturity (Ro%)

Maturity (Ro%)

Gas expelled(Bcf/km2)

Gas expelled(Bcf/km2)


Roebuck and Beagle Triassic Study

• Regional tectonostratigraphic and source rock studies of the Triassic interval

• Work in progress with interesting new insights into the structural architecture


Northern Carnarvon Basin

W18-4, W18-5:

Beagle Sub-basin Closing 21 March 2019

W18-9: Exmouth Plateau Closing 18 October 2018

Two large release areas on offer


Beagle Sub-basin: W18-4 and W18-5 (closing 21 March 2019)

• Under-explored part of the

Northern Carnarvon Basin

• 9 wells drilled between 1971 and

2007

• Nebo-1 oil discovery in Jurassic

(Oxfordian, Calypso Fm)

• Geochemical affinities with

Exeter/Mutineer in Dampier

Sub-basin

• New exploration phase stimulated

by recent discoveries in

neighbouring Bedout Sub-basin

• Renewed interest in the Triassic

Petroleum system which is

emerging as likely new play

fairway


• Existing public structural

elements maps are outdated

• A renewed interest in Triassic

Petroleum systems in this part

of the North West Shelf is a

driver to update the regional

understanding of basin

architecture and structural

elements

• Extensive regional 3D seismic

coverage is enabling significant

improvements to our structural

understanding

• GA also working with select

multi-client seismic data to

maximise what we can bring to

the regional understanding

Roebuck Basin – Regional tectonostratigraphy


Roebuck Basin – Regional tectonostratigraphy • Regional 2D and 3D seismic interpretation to provide an update of basin architecture

and Triassic stratigraphy

• Of great interest after recent discoveries a Phoenix South – 1, 2 and Roc – 1, 2

• Using key wells that have intersected Triassic stratigraphy

• Mapping five key surfaces regionally:

• TR10 SB, TR17 SB, TR21 TS, TR30 TS and the J10 SB

• Have approval to include some multi-client data

TR17.0_SB time structure map (blue is deep)


Initial Observations - Regional Structure Grids TR10.0_SB – Base Triassic

Base Locker/Mungaroo

TR17.0_SB – Middle Triassic

Cossigny Limestone

Sediment delivered via the

Canning Basin (Willara Sub-basin)

to the Triassic Keraudren delta

Rapid deepening of the

TR10 into the Beagle

Triassic extensional

fault system in The

Rowley


• Carnarvon Basin

Triassic delta system

transitions from deltaic

sedimentation to

carbonate platforms

• We see the same

relationship in the

Roebuck Basin and

Beagle Sub-basin

• This has implications for

petroleum systems

• Late Triassic carbonate

reef plays are and

example

Roebuck Triassic delta is analogous to the Carnarvon

(Adamson et al. 2013) - WABS


Late Triassic to Jurassic reefs

TR17.0 SB (Top Cossigny – Middle Triassic)

TR26.0 SB

J10.0 SB

• TR26-J10 (Late Triassic) interval is characterised by continuous bright reflectors

• Carbonate rich succession is confirmed by several distant well ties - Anhalt and Hannover South (Rowley) and

Barcoo 1 (Barcoo).

• Associated bumps seem here on the base Jurassic unconformity are likely reefs

• Triassic reefs are also widespread in the outer Carnarvon Basin

• Explorers are considering the prospectivity of this interval the Rowley Sub-basin by and outer

Exmouth Sub-basin

• These have been considered potential plays

J10.0 SB


• Late Triassic mini-basin

identified with source rock

potential on a carbonate

platform

• Mixed varbonate clastic source

rocks

• Currently oil mature

• Several potential reservoir/seal

pairs identified

Late Triassic to Jurassic reefs • Very similar stratigraphic succession

between the North West Shelf, West

Papua (Birds Head area) and Timor Island

• Proven Late Triassic, marine, carbonate

petroleum system in West Papua (Birds

Head area) and Timor Island

• Strong evidence for its existence on the

NW Shelf Mixed carbonate/clastic source rock

TR15-JTR1 Isopach

Upper Keraudren

Formation

(Mungaroo Formation

equivalent)

Late Triassic (236-209Ma)

PESA WA May technical lunch Thursday

24 May 2018

Claudia Valenti – Carnarvon Petroleum


• Late Triassic mini-basin

identified with source rock

potential on a carbonate

platform

• Mixed varbonate clastic source

rocks

• Currently oil mature

• Several potential reservoir/seal

pairs identified

Late Triassic to Jurassic reefs

Mixed carbonate/clastic source rock PESA WA May technical lunch Thursday 24 May 2018

A review of the hydrocarbon prospectivity of the Late Triassic

of the Roebuck Basin


TR15-JTR1 Isopach

Upper Keraudren

Formation

(Mungaroo Formation

equivalent)

Late Triassic (236-209Ma)

PESA WA May technical lunch Thursday

24 May 2018



Seismic stratigraphy – Rowley Sub-basin

SE

A

NW

TR10.0_SB TR17.0_SB

TR21.0_SB

TR30.0_SB

J10.0_SB

sills

Hannover South 1

Anhalt 1

(notional projection)

clinoforms

500+ m volcanics in

wells belowTR17.0 SB

?

TR10.0_SB Structure map

Approximate trend of youngest

Clinoform break

Top Middle Triassic clinoform

platform edge in Curt 3D

TR10 – Base Triassic


Seismic stratigraphy – Rowley Sub-basin

SE

A

NW

TR10.0_SB TR17.0_SB

TR21.0_SB

TR30.0_SB

J10.0_SB

sills

Hannover South 1

Anhalt 1

(notional projection)

clinoforms

500+ m volcanics in

wells belowTR17.0 SB

?

TR10.0_SB Structure map

Approximate trend of youngest

Clinoform break

Top Middle Triassic clinoform

platform edge in Curt 3D

TR10 – Base Triassic

MacNeil et al. 2018


GA Petroleum Program Summary

GA precompetitive

studies support current

and future acreage

release

Regional Triassic

maps using 2D and 3D

data are being

produced

Multi-client data is

being integrated where

available

Regional maps will be

made available to

explorers to support

acreage assessment


• As well as pre-competitive studies, Petroleum data (such as seismic and well

data) is also freely available to everybody via NOPIMS

• Anyone can log on – data is also available on request


Useful Roebuck/Beagle references Glikson, A., (2004) Bedout basement rise, offshore northwestern Australia: evidence of an unshocked mafic volcanic hyaloclastite volcanic

breccia. AGU Fall Meeting EOS Trans 2004. Abstract B33C–0269.

Haig, D. W., Mory, A. J., McCartain, E., Backhouse, J., Håkansson, E., Ernst, A., Nicoll, R. S., Shi, G. R., Bevanb, J. C., Davydov, V. I., Hunter,

A. W., Keep, M., Martin, S. K., Peyrot, D., Kossavaya, O., and Dos Santos, Z. (2017). Late Artinskian–Early Kungurian (Early Permian) warming

and maximum marine flooding in the East Gondwana interior rift, Timor and Western Australia, and comparisons across East Gondwana.

Palaeogeography, Palaeoclimatology, Palaeoecology 468, 88–121. doi:10.1016/j.palaeo.2016.11.051

Minken, J., Thompson, M., Woodward, J., and Fabrici, R. (2018). Tectonostratigraphic framework of the Lower Keraudren Formation, Bedout

Sub-Basin: interplay of tectonics and sedimentary systems. The APPEA Journal 58(2), doi:10.1071/AJ17170

Marshall, N.G., and Lang, S.C., 2013—A new sequence stratigraphic framework for the North West Shelf, Australia. In: Keep, M. and Moss, S.J.

(Eds), The Sedimentary Basins of Western Australia 4: Proceedings of Petroleum Exploration Society of Australia Symposium. Petroleum

Exploration Society of Australia, Perth. 1-32.

Molyneux, S., Goodall, J., McGee, R., Mills, G. & Hartung-Kagi, B., 2016. Observations on the Lower Triassic petroleum prospectivity of the

offshore Carnarvon and Roebuck basins. APPEA Journal, 2016, 173-201.

Müller, R., Goncharov, A., and Kritski, A. (2005). Geophysical evaluation of the enigmatic Bedout basement high, offshore northwestern

Australia. Earth and Planetary Science Letters 237, 264–284. doi:10.1016/j.epsl.2005.06.014

Paschke, C. A., O’Halloran, G., Dempsey, C., and Hurren, C. (2018). Interpretation of a Permian conjugate basin margin preserved on the

outer Northwest Shelf of Australia. AEGC 2018 Conference, Sydney, extended abstract.

Thompson, M., Macdonald, S., Evans, M., Isherwood, M., Kelly, D., Ryan, R., Jablonski, D., Molyneux, S., and Purcell, P. (2015). Phoenix

South: a new petroleum system in the Bedout Sub-basin. AAPG 2015 International Conference and Exhibition, Melbourne, Australia, abstract.

Thompson, M., Wehr, F., Woodward, J., Minken, J., D’Orazio, G., Fernandes, F., Kongawoin, M., Hansen, L., Kuek, D., and Fabrici,

R. (2018). Recent exploration results in the Lower Triassic, Bedout Sub-basin: Australia’s next petroleum province? The APPEA Journal

58(2). doi:10.1071/AJ17165

Wehr, F., Ostby, J., Cook, A., and Yoshinori, I. (2015). The Phoenix South discovery: a new hydrocarbon province on the North-Western

Shelf of Australia. AAPG 2015 International Conference and Exhibition, Melbourne, Australia, abstract.

Woodward, J., Minken, J., Kongawoin, M., Hansen, L., Thompson, M., and Fabrici, R. (2018). The Lower Triassic Caley Member: depositional

facies, reservoir quality and seismic expression. The APPEA Journal 58(2). doi:10.1071/AJ17172


geoscience australia’s · organic geochemistry, sedimentology & palynological laboratories...

Documents