Abstract

O.D.N.L. Penola No. 1 Well, located in the north-east corner of Section 500, Hundred of Penola, South Australia, was drilled by Oil Development N.L. under a "farm-out" agreement with General Exploration Company of Australia Limited to a total depth of 4985 feet. Drilling was commenced on 7th February, 1961, and the well was abondoned as a dry hole on 5th May, 1961. The drilling contractor was Australian Tube Wells Pty Ltd, and the rig used was a Failing 2500 - Holemaster. The operation provided for a programme of electric and mud logging, testing and coring. The Penola Well was designed to test the petroleum potentialities of the Coonawarra subsurface structure, which was first detected by a single reconnaissance seismic reflection traverse made through the Penola area. Beneath a thin Pleistocene cover Penola No. 1 penetrated a sequence of marine and paralic Tertiary, and marine and non-marine Mesozoic rocks, ranging in age from Oligocene to probable Upper Jurassic. The Tertiary sediments consisted of 215 feet of Gambier Limestone (Oligocene); 160 feet of Compton Conglomerate (Oligocene); followed by about 630 feet of paralic sands and grits of the Knight Group (middle to upper Eocene). There is a marked discontinuity at l040 feet where the well passed abruptly from the Eocene to Cretaceous arkosic sandstones and siltstones of the Merino Group. The Upper Member of the Runnymede Formation of Albian to (?) Cenomanian age was 2380 feet thick, and of marine origin in at least the lower 800 feet, between 2586 and 3420 feet. The lower nonmarine member of the Runnymede Formation (? Aptian) was represented between 3420 and 4300 feet. A slight angular unconformity is interpreted at about 4300 feet, below which the well is considered to have entered non-marine mudstones and sandstones of the Mocamboro Member of probable Upper Jurassic age. Minor showings of gas were encountered at Penola No. 1, none being of commerial significance. No signs of live oil were observed in the well.
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Product Type/Sub Type

nonGeographicDataset - GA Publication - Other Publication

Constraints

license
Creative Commons Attribution 3.0 Australia Licence

IP Owner

Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1963

Product Type

nonGeographicDataset

Topic Category

geoscientificInformation

Keywords

GA Publication
Other Publication
petroleum exploration
Earth Sciences

Resource Language

English

Resource Character Set

utf8

Resource Security Classification

unclassified

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Unknown

Digital Transfer Options

onLine

DISTRIBUTION Format

pdf

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distributor
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address

Metadata File Identifier

a05f7893-0017-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2008-08-12

METADATA SECURITY CLASSIFICATION

unclassified

Metadata Contact

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pointOfContact
Organisation Name
Geoscience Australia
City
Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
Email Address
Downloads
For information on acquiring this product,
please contact the Geoscience Australia Sales Centre via:

fax:
+61 2 6249 9960; or
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1800 800 173 (within Australia);
 
+61 2 6249 9966 (outside Australia).

Please note that support hours are 9 am to 5 pm weekdays