A 1998 study published in The APPEA Journal details the geochemical origins of hydrocarbons in Queensland's Gilmore Field. Dry gas is sourced from both wet gas associated with oil generation and a deep, overmature source with high nitrogen content. The research identifies specific Devonian source rocks and suggests this overmature gas play concept may be more widespread in Australian basins.
Use Cases
- Modeling hydrocarbon generation and expulsion based on identified Devonian source rocks and maturity levels.
- Assessing reservoir compartmentalization and migration pathways based on the distribution of overmature dry gas.
- Correlating oil sources across basins using source-sensitive biomarkers and carbon isotope compositions.
- Evaluating the potential for deep, overmature gas plays in other Australian sedimentary basins.
Strengths
- Analysis employs a molecular and multi-element isotopic approach for source recognition.
- Specific source rocks are identified, including the Log Creek Formation and Cooladdi Dolomite.
- Maturity levels for wet gas and oil are precisely defined with an equivalent vitrinite reflectance range.
Limitations
- Description metadata is limited; actual data quality requires manual inspection after download.
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- Boreham C.J., & de Boer R.A., 1998, The APPEA Journal.
- Collection Method
- Geochemical analysis of gas and oil samples, including molecular and isotopic studies.
- Freshness
- Last updated 2026-06-23 04:15:20.998069; freshness should be verified.
- Geography
- Adavale Basin, central Queensland, Australia.