Citation

Felton, E.A., Miyazaki, S., Dowling, L., Pain, L., Vuckovic, V. & Le Poidevin, S.R., 1993. Australian petroleum accumulations report. Carnarvon Basin, Western Australia. Report  8. Australian Geological Survey Organisation, Canberra.

Abstract

Seventy three petroleum accumulations have been found to 30 June 1992 in the Carnarvon Basin. Most accumulations occur offshore in the northern part of the basin, in Triassic to Cretaceous sedimentary rocks. This Mesozoic sequence was deposited in a series of sub-basins associated with the rifting of the Australian and Indian plates. Petroleum accumulations are found in the Barrow, Dampier and Exmouth Sub-basins, the Exmouth Plateau, and the Peedamullah/Onslow Shelf. Trapping mechanisms include structural and stratigraphic traps at several levels in the Mesozoic sequence. The largest known gas and oil fields in the basin are reservoired in pre-rift Triassic fluvio-deltaic sands and post-rift Cretaceous marginal marine sandstones. Several significant accumulations, including the Wanaea and Cossack oil accumulations, occur in the Jurassic syn-rift sequence, which includes marine shelf, slope and basin floor sandstones. Source and seal for many accumulations are provided by marine prodelta shales and by restricted occurrences of deep marine shales, both of Jurassic age. Cretaceous marine claystones also act as seals, often by juxtaposition of these impermeable sediments against reservoirs across faults. Thirteen developments were in place, as at 30 June 1992, to produce petroleum from the Carnarvon Basin and a further nine were planned, not including the planned Wandoo production test. Development infrastructure offshore consists of manned and unmanned platforms and monopods, seapoles and pipelines, while onshore facilities include the gas processing facilities and LNG plant at Karratha, the Tubridgi gas plant, the Harriet gas gathering facility on Varanus Island, oil processing or storage plants on Varanus, Thevenard, Airlie and Barrow Islands and offloading facilities at these islands. The Talisman development using a floating production facility ceased production in August 1992 and was decommissioned in October 1992.
Google map showing geographic bounding box with values North bound -16.1 East bound 120.3 West bound 110.7 South bound -23.6
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Product Type/Sub Type

dataset - GA Publication - Report

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1993

Product Type

dataset

Topic Category

geoscientificInformation

Keywords

GA Publication
Report
petroleum geology
petroleum exploration
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

Geographic Extent

North bound
-16.1
East bound
120.3
West bound
110.7
South bound
-23.6

Lineage

Unknown

Digital Transfer Options

onLine

DISTRIBUTION Format

pdf

Distributor

Role
distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7892-b5e1-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2001-06-13

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

Role
pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
phone:
1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays