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A A O Combarngo No 1, Queensland Of Associated Australian Oilfields NL

Created 17/10/2025

Updated 17/10/2025

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A.A.O. Combarngo No. 1 Well was drilled by Associated Australian Oilfields N.L. on a broad seismic "high" at Combarngo, approximately 30 miles south-east of Roma, Queensland. Drilling was commenced on 5th May, 1961, and was completed on 10th June, 1961, at a total depth of 5985 feet. The drilling contractor was Mines Administration Pty Limited, and the rig used was a National Ideal 55. A full programme of logging, testing, and coring was undertaken. The well penetrated Mesozoic sediments to 5315 feet, Permian sediments from 5315 to 5628 feet, and a volcanic section of unknown age from 5628 feet to total depth. Significant, though small, quantities of a high gravity oil were produced with saline water from the basal Mesozoic sands. Four barrels of 52 degree API gravity oil were recovered in a drill stem test on the Showground Sandstone. Five formation tests were run, the results of which are summarized in Appendix 7. After testing, the well was plugged and abandoned; it was subsequently developed as a water bore producing from the Blythesdale Formation.

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Field Value
Title A A O Combarngo No 1, Queensland Of Associated Australian Oilfields NL
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/6260e3db-69ed-4a80-aa30-3deff927e9de
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "A A O Combarngo No 1, Queensland Of Associated Australian Oilfields NL". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/a-a-o-combarngo-no-1-queensland-of-associated-australian-oilfields-nl