Geochemical Origin Analysis of Gilmore Field Hydrocarbons

A 1998 study by Boreham and de Boer analyzes the origin of gas and oil in the Gilmore Field, Adavale Basin, central Queensland. It uses molecular and multi-element isotopic data to differentiate between wet gas from Devonian source rocks and overmature dry gas from a deeper source. The research was published in The APPEA Journal.

Use Cases

• Identify overmature dry gas sources using isotopic composition of methane and carbon dioxide.
• Correlate oil samples to specific Devonian source rocks like the Log Creek Formation using source-sensitive biomarkers.
• Model reservoir compartmentalisation and migration pathways based on spatial variations in gas composition.
• Assess the potential for the Devonian Petroleum Supersystem in other basins by comparing chemical links to oils from the Bonaparte and Canning basins.

Strengths

• Analysis includes multiple geochemical proxies: molecular composition, multi-element isotopes, and biomarkers.
• Study provides specific maturity indicators, such as vitrinite reflectance values of 1.4-1.6 percent for wet gas.

Limitations

• Dataset size and structure are undefined; the primary data is embedded within a scientific article.
• Temporal coverage is limited to a specific 1998 study, with no indication of ongoing updates.
• Geographic scope is restricted to a single field (Gilmore) within the Adavale Basin.

Provenance

Source

Boreham C.J., & de Boer R.A., published in The APPEA Journal.

Collection Method

Geochemical analysis of hydrocarbon samples from the Gilmore Field.

Time Range

Study published in 1998; specific sample collection dates unknown.

Freshness

null

Geography

Gilmore Field, Adavale Basin, central Queensland, Australia.