Gidgealpa No. 1 Well Geological Report from 1963

South Australia's Gidgealpa No. 1 well was drilled in 1963 by Delhi Australian Petroleum Ltd and Santos Limited. The well reached a total depth of 13,114 feet and provided new geological information on the Permian and Cambrian sequences in the Great Artesian Basin. The operation was subsidized under the Petroleum Search Subsidy Act.

Use Cases

• Analyze lithology descriptions to correlate Permian rock sequences with nearby wells like Dullingari No. 1.
• Study the thickness of the Mesozoic sequence, noted as the thickest in the western Great Artesian Basin at the time.
• Examine records of hydrocarbon shows in the Permian sequence and the low porosity of sandstones.
• Investigate the 400-foot thick Middle Cambrian dolomite zone and its test results showing gassy saltwater flow.
• Review drilling details such as spud date, total depth, completion date, and the rig used (National 80-B).

Strengths

• Report contains specific numerical details like total depth (13,114 feet) and a thick dolomite zone (400 feet).
• Provides precise temporal data including spud date (28 August 1963) and completion date (6 December 1963).
• Includes comparative geological analysis with other wells (Innamincka No. 1, Dullingari No. 1).

Limitations

• Data is a historical document from a single well drilled in 1963, with no modern updates.
• Primary format is descriptive text (HTML/PDF), not structured tabular data for direct analysis.
• Geographic scope is limited to one specific well location in northeastern South Australia.

Provenance

Source

Australian Ocean Data Network, sourced from data.gov.au.

Collection Method

Drilling and geological analysis report from a subsidized petroleum exploration operation.

Time Range

1963 (drilling and completion activities).

Freshness

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Geography

Gidgealpa No. 1 well site in the north-eastern corner of South Australia, within the Great Artesian Basin.