Goldwyer Formation Hydrocarbon Generation Kinetics

Pyrolysis and bulk kinetic studies investigate the hydrocarbon generation potential of marine organic-rich rocks from the Middle Ordovician Goldwyer Formation. The research analyzes immature to mid-mature calcareous mudstones, distinguishing oil-prone Type I kerogen in upper sequences from mixed Type II/III kerogen in lower sequences. The study, authored by Lukman M. Johnson et al., was published in the International Journal of Coal Geology in 2020.

Use Cases

• Modeling basin-specific burial history using kinetic parameters for Type I and Type II/III kerogen transformation.
• Predicting hydrocarbon phase (paraffinic oil vs. gas/condensate) based on Rock Eval pyrolysis results and kerogen type classification.
• Assessing source rock facies variability by correlating pyrolysis gas chromatography (Py-GC) molecular signatures with sequence stratigraphy.
• Estimating hydrocarbon generation temperature windows (e.g., 145°C to 170°C for Type I) for thermal maturity modeling.

Strengths

• Data supports basin-specific kinetic input for burial history modeling on the Broome Platform.
• Analysis distinguishes between two distinct organofacies (homogenous aliphatic vs. heterogeneous aromatic) linked to specific geological sequences.

Limitations

• Sample size and specific row count are not provided in the description.
• Data is derived from a single geological formation (Goldwyer Formation), limiting broader regional applicability.
• The underlying raw data files and specific measurement columns are not directly accessible from the provided record.

Provenance

Source

Australian Ocean Data Network, citing a 2020 journal article by Lukman M. Johnson et al.

Collection Method

Rock Eval pyrolysis, pyrolysis gas chromatography (Py-GC), and bulk kinetic studies on core samples.

Time Range

Samples from the Middle Ordovician (Darriwilian) period.

Freshness

null

Geography

Canning Basin, Western Australia, specifically the Goldwyer Formation on the Broome Platform.