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RB 80/00010 Oil geochemistry and assessment of hydrocarbon source potential of Cambrian and Devonian rocks, Officer Basin, South Australia.
Published: 01 May 1980 Created: 06 Nov 2024 Revised: 06 Nov 2024
Author: McKirdy, D.M.;Kantsler, A.J.

Oil shows in the Observatory Hill Beds in Byilkaoora 1 occur in a non-marine, alkaline playa lake sequence. Geochemical analysis suggests that they are immature and belong to 2 primary genetic families. The less altered oils are quite unlike...

Oil shows in the Observatory Hill Beds in Byilkaoora 1 occur in a non-marine, alkaline playa lake sequence. Geochemical analysis suggests that they are immature and belong to 2 primary genetic families. The less altered oils are quite unlike Cambrian oils from Wilkatana 1 (Arrowie Basin), Alice 1 (Amadeus Basin) and Morrow County field, Ohio, USA. Potential source beds in the Byilkaoora evaporitic sequence contain 0.5-1.0% total carbon and yield up to 1900 ppm solvent extractable organic matter. Oil-source rock correlation indicates that the oils originated within those facies which were drilled, making them the first reported examples of non-marine Cambrian petroleum. Geochemical and petrographic studies of the organic matter in Cambrian sediments from 5 other wells in the basin reveal regional variations in hydrocarbon source potential that relate to differences in precursor microbiota, depositional environment and regional maturation.

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Record No rb8000010
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Departmental Publication - Energy Geoscience
Contributor
Sponsor
Tenement
Tenement Holder
Operator
Geological Province Officer Basin
Mine Name
Stratigraphy Observatory Hill Formation
Commodity
    Notes 
    Notes: Report no. 9 of the SADME/industry Officer Basin Study Group.
Geographic Locality: South Australia
Doc No: RB 80/00010
Drillhole: Munyarai 1;(1077);Byilkaoora 1;(3645);Wilkinson 1;(1575);Wallira West 1;(2625);Murnaroo 1;(1046);Emu 1;(1060)
    Notes: Report no. 9 of the SADME/industry Officer Basin Study Group.
Geographic Locality: South Australia
Doc No: RB 80/00010
Drillhole: Munyarai 1;(1077);Byilkaoora 1;(3645);Wilkinson 1;(1575);Wallira West 1;(2625);Murnaroo 1;(1046);Emu 1;(1060)
    Language English
    Metadata Standard ISO 19115-3

    Citations

    Use constraints License
    License Creative Commons Attribution 4.0
    Persistent identifier https://pid.sarig.sa.gov.au/document/rb8000010
    Citation McKirdy, D.M.;Kantsler, A.J. 1980. RB 80/00010 Oil geochemistry and assessment of hydrocarbon source potential of Cambrian and Devonian rocks, Officer Basin, South Australia. Departmental Publication - Energy Geoscience. Government of South Australia.
    https://pid.sarig.sa.gov.au/document/rb8000010

    Technical information

    Status
    Maintenance and Update Frequency
    Geographic Reference GDA2020 (EPSG:7844)
    Geo bounding box {"type":"Polygon","coordinates":[[[129.5,-30],[133.5,-30],[133.5,-27.5],[129.5,-27.5],[129.5,-30]]]}
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