D.F.S. No. 1 Betoota: Geological Well Log from 1959-60 Drilling

Far southwest Queensland is the location of the Betoota No. 1 well, drilled to a total depth of 9,824 feet between December 1959 and April 1960. The operation was conducted by Delhi Australian Petroleum Ltd, Frome-Broken Hill Company Pty Ltd, and Santos Limited, and included electric and mud logging, testing, and coring. The well log documents 5,757 feet of Mesozoic strata overlying 4,067 feet of probable Palaeozoic sediments, with notes on hydrocarbon showings, porosity zones, and source rock shales.

Use Cases

• Model subsurface stratigraphy based on the documented depths of Mesozoic and Palaeozoic sediments.
• Assess historical hydrocarbon potential based on recorded showings between 4,400 and 5,757 feet.
• Study porosity and water saturation in zones between 3,450 and 5,757 feet.
• Identify potential source rock intervals based on described marine and brackish-water shales.

Strengths

• Detailed operational record includes specific dates (22 Dec 1959 - 18 Apr 1960), total depth (9,824 ft), and rig details (National 130).
• Stratigraphic analysis is quantified with specific thicknesses (5,757 ft of Mesozoic, 4,067 ft of Palaeozoic).
• Description notes a comprehensive program of electric and mud logging, testing, and coring was carried out.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect temporal bias inherent to a single well drilled in 1959-60.

Provenance

Source

Geoscience Australia Data

Collection Method

Data collected during the drilling and logging of the Betoota No. 1 well by the operating company and contracted service companies.

Time Range

1959-12-22 to 1960-04-18

Freshness

Last updated 2026-04-20 02:09:02.175393; freshness should be verified.

Geography

Betoota, far southwest Queensland, Australia