drilling operations in the sydney basin new south wales, … · commonwealth of australia...

COMMONWEALTH OF AUSTRALIA

DEPARTMENT OF NATIONAL DEVELOPMENT

BUREAU OF MINERAL RESOURCES, GEOLOGY AND GEOPHYSICS

Petroleum Search Subsidy Acts

PUBLICATION No. 12

SUMMARY OF DATA AND RESULTS

Drilling Operations in the Sydney Basin

New South Wales, 1958-1962

OF

AUSTRALIAN OIL AND GAS CORPORATION LIMITED

FARMOUT DRILLERS NO LIABILITY

AND

EXOIL (N.S.W.) PTY LIMITED

Issued under the Authority oj the Hon. David Fairbairn

Minister .jor National Development1965 >\..

8546/64-L

COMMONWEALTH OF AUSTRALIA

DEPARTMENT OF NATIONAL DEVELOPMENT

MINISTER: THE HON. DAVID FAIRBAIRN. D.F.C.. M.P.

SECRETARY: SIR HAROLD RAGGATT, C.B.E.

BUREAU OF MINERAL RESOURCES. GEOLOGY AND GEOPHYSICS

DIRECTOR: J. M. RAYNER

THIS REPORT WAS PREPARED FOR PUBLICATION IN THE PETROLEUM EXPLORATION BRANCH

ASSISTANT DIRECTOR: M. A. CON DON

Published by the Bureau of Milieral Resources, Geology and Geophysics'

Canberra, A.c.r.

FOREWORD

Under the Petroleum Search Subsidy Act 1959-1961, agreements relating tosubsidized operations provide that the information obtained may be published by the Commonwealth Government six months after the completion of field work.

The growth of the exploration effort has greatly increased the number of subsidized projects and this increase has led to delays in publishing the results of operations.

The detailed results of subsidized operations may be examined at the Bureau ofMineral Resources in Canberra and Melbourne (after the agreed period) and copies of thereports may be purchased.

In order to make the main results of operations available early, short summariesare being prepared for publication. These will be grouped by area and date of completion asfar as practicable. Drilling projects and geophysical projects will be grouped separately.In due course, full reports will be published concerning those operations which have producedthe more important new data.

This Publication contains summaries of data and results of four drillingoperations undertaken in the Sydney Basin, New South Wales: Mulgoa No. 2, Mount HunterNo. 1, Stockyard Mountain No. 1, and Kurrajong Heights No. 1. The information has beenabstracted by the Petroleum Exploration Branch of the Bureau of Mineral Resources fromwell completion reports furnished by Australian Oil and Gas Corporation Limited, FarmoutDrillers N.L., and Exoil (N.S.W.) pty Limited.

J.M. RAYNERDffiECTOR

CONTENTS

MULGOA NO. 2

SUMMARY

WELL HISTORY

GEOLOGY

REFERENCES

ADDITIONAL DATA FILED IN THE BUREAU OF MINERALRESOURCES

MOUNT HUNTER NO. 1

SUMMARY

WELL HISTORY

GEOLOGY


STOCKYARD MOUNTAIN NO. 1

SUMMARY

WELL HISTORY

GEOLOGY


KURRAJONG HEIGHTS NO. 1

SUMMARY

WELL HISTORY

GEOLOGY

REFERENCES


Page

1

2

3

4

5

9

10

11

12

15

16

17

20

23

24

26

28

28

Figure 1

Figure 2

Figure 3

Figure 4

ILLUSTRATIONS

Locality and Geological Map, Mulgoa No. 2 and Mount

Hunter No. 1 Frontispiece

Correlation Section, Mulgoa No. 2 and Mount Hunter No. 1 OPP. p. 12

Locality and Geological Map, Stockyard Mountain No. 1 OPP. p. 15

Locality and Geological Map, Kurrajong Heights No. 1 OPP. p. 23

PLATES

Plate 1

Plate 2

Plate 3

Plate 4

Composite Well Log, MulgoaNo. 2

Composite Well Log, Mount Hunter No. 1

Composite Well Log, Stockyard MountainNo. 1

Composite Well Log, Kurrajong Heights No. 1

At back of report

At back of report

At back of report

At back of report

MULGOA NO. 2

of



AUSTRALIAN OIL & GAS CORPORATION LIMITED

LOCALITY MAP - MULGOA No 2 AND MOUNT HUNTER No 1

SHOWING

REGIONAL GEOLOGY AND SEISMIC TRAVERSES, 1961

GROUP

GROUP I I34

0

00

SANDSTONE

16I

<:J(jo

(j-l.{.-(jCl

I~"L I""A"'>I VOLCANICS (PLUGS. FLOWS)

l~ WIANAMATTA

I IHAWKESBURY

::~r;,:~::~::"';::;;~:::.~~:!~~;:::::-':::";:';;:{:i,:j NARRABEEN.

o I

151,20

PERMIAN

SCALE OF MILES

4 8 12; '

TRIASSIC

PALAEOZOIC

MESOZOIC

TERTIARY

LEGEND

RECENT-TERTIARY I~~-~ ~I ALLUVIUM. SAND. RIVER~ - ~ GRAVEL & CLAY.

{k::;>.··...:>:I UPPER COAL MEASURES.

1':'.. :::":\ UPPER MARINE SERIES

~ STRUCTURE CONTOURS .WJ'Base MiIlnamatta._____ H.J' Base Hawl<esbury.

F. FAULTS.

----- BOUNDARY OF PROPOSED SEISMIC WORK.

----- LEASE BOUNDARIES.

o BOREHOLES.

oI

o I15100

MULGOANO.2

SUMMARY OF DATA AND RESULTS *

SUMMARY

Mulgoa No. 2 Well was located in the central-western part of the Sydney Basin,about 35 miles west of Sydney, New South Wales. The well was drilled by the Operator,Australian Oil and Gas Corporation Limited, using a Bucyrus Erie 48-L cable-tool rig, toa total depth of 5630 feet. Drilling commenced on 20th September, 1958, and was completedon 5th November, 1959. A programme of coring and gas sampling was carried out, but noelectric logging, perforating or testing operations were undertaken.

The well penetrated 2498 feet of Triassic shales and sandstones and 3132 feetof Permian coal measures, sandstones, shales, and siltstones.

The objective of the drilling operation was to test the petroleum potential of thePermian strata in the Mulgoa Anticline. Pre-Permian rocks were expected between 5000 and5200 feet but the well was still in sediments of Permian age when mechanical difficultiescaused it to be abandoned at 5630 feet. The well was sited on the eastern flank of the anticline,some 15 miles east (basinwards) of outcropping Permian strata.

Many natural gas. shows were encountered in the Triassic and Permian bedsbut none proved to be of commercial significance. The only large flows of natural gas wereat 2579 feet and at 3558 to 3559 feet, and these proved to be blowouts in coal seams. Flowsin both cases quickly subsided. Orifice meter tests of twelve gas flows gave a maximum yieldof 40 Mcf/D, reducing to 10 Mcf/D after 20 hours.

The stratigraphic drilling operation at Mulgoa No. 2, New South Wales, wassubsidized under the Petroleum Search Subsidy Act 1957-1958, from surface to total depth.

* Abstracted from Well Completion Report, Mulgoa No. 2 Well, Sydney Basin, New SouthWales, by D.J. McGarry, Australian Oil and Gas Corporation Limited, 1960.

1

General Data

Well name and number:

WELL HISTORY ,

Mulgoa No. 2

Location: LatitudeLongitude

330

48'39" S.150

038'28" E.

Name and address ofTenement Holder:

Details of PetroleumTenement:

Total Depth:

Date drilling commenced:

Date drilling completed:

Date well abandoned:

Date rig released:

Elevation (ground):

Elevation (floor level):

Status:

Cost:

Drilling Data

Drilling Plant:

Make:

Type:

Australian Oil and Gas Corporation Limited,261 George Street, Sydney, New South Wales

Petroleum Exploration Licence No. 13, issued bythe State of New South Wales

5630 feet

20th September, 1958

5th November, 1959

8th June, 1960

8th June, 1960

497 feet

501 feet (datum for depths)

Dry hole; plugged and abandoned

£50,850

Bucyrus Erie

48-L Oil Well Spudder

Hole sizes and depths: 191/2"16:1;2"121/4"12"

8W'4"5 7t1l"

2

to 65 feetto 1063 feetto 1240 feetto 2763 feetto 3582 feetto 5630 feet (T.D.)

Casing details:

Size (in.):

Weight (lb/it):

Grade:

Range:

18 13 a.-E

48

H

2

9&-E

36

J

2

20

J

2

Setting depth (ft):

Logging and Testing

Ditch Cuttings:

65 1063 1240 35822763 (final)

Interval:

Coring:

Gas Testing:

Stratigraphy

Sampled at end of each drilling run, which generallyaveraged less than ten feet.

Twelve coring runs were made using a Baker corebarrel and 5 [vB" bit (core diameter 2 1/16"). Atotal of 64.5 feet was cored and 52.75 feet recovered(81.8% recovery).

Wherever possible samples were obtained from eachseparate gas horizon by the wellsite geologist, anddespatched to the Chemical Laboratory of the N.S.W.Department of Mines for analysis. Gas flows werealso tested with an orifice meter.

GEOLOGY

~ianamatta Group (Triassic) Surface to 70 feet

Dark grey to black, carbonaceous shale with thin flaggy sandstone at base.

Hawkesbury Sandstone (Triassic) : 70 to 850 feet (780 feet)

Light grey to white, medium to coarse-grained, quartz sandstone. Finelyconglomeratic in part and with a few thin grey shale beds.

Narrabeen Group (Triassic) : 850 to 2498 feet (1648 feet)

Mostly medium_grained sandstone, in part finely conglomeratic, with thininterbeds of grey and greenish shale. Grey, micaceous shale, with some chocolateshale, are dominant in the upper part of the sequence, and 50 feet of dark grey shalesoccur at the base. The interbedded shales and sandstones from 850 to 950 feet can

3

be correlated with the Gosford Formation. The shales from 950 to 985 feet arecorrelated with the Bald Hill Claystone or Collaroy Claystone, and the remainderis the equivalent of the Clifton Subgroup.

Lithgow Coal Measures (Permian) : 2498 to 2865 feet (367 feet)

Interbedded grey shale, black carbonaceous shale, coal seams, grey, fineto medium-grained, lithic sandstone and grey tuffaceous shale.

Coal Measures (Permian - probably equivalent to Tomago Coal Measures): 2865 to 3597feet (732 feet)

Interbedded grey shale, grey siltstone, fine to medium-grained, grey lithic sandstone, and thin ill-defined coal stringers.

Capertee Group (Permian) : 3597 to 5630 feet (2033 feet +)

Interbedded grey siltstone (calcareous in part), dark grey shale (carbonaceousin part), fine to medium-grained, grey lithic sandstone, and medium to coarse-grained,pebbly sandstone. Thin limestone beds are interbedded with the carbonaceous stratanear the top of the sequence. The beds contain brachiopod fragments, rugose corals, andarenaceous foraminifera.

Structure

Mulgoa No. 1 (drilled in 1935, T.D. 3119 feetf and Mulgoa No. 2 were bothlocated on the Mulgoa Anticline, a small structure forming part of the Lapstone Monocline.MulgoaNo. 2 was sited one mile east and 300 feet below the crest of the anticline, andapproximately 1 1/2 miles east-south-east of Mulgoa No. L The anticline has a northsouth axis, a maximum closure of 300 feet over an area of ten square miles, and is faultedon the western flank.

Occurrence of Natural Gas

Numerous gas shows were encountered during drilling. The results of analysesindicate a generally high carbon dioxide content of the gas encountered in the NarrabeenGroup, the Lithgow Coal Measures, and the unnamed coal measures to 3597 feet. Analysesof gas from the Capertee Group showed a low carbon dioxide content and a relatively highethane and propane content.

REFERENCES

HARPER, L.F.,

McELROY, C.T.,

1916:

1962:

The geology and mineral resources of the southernCoalfield. Geo!. Surv. N.S.W. Mem. 7.

Explanatory notes to the Sydney 1:250,000 GeologicalSheet, 1/56-5, 2nd Edition. Bur. Min. Resour.Aust. Exp!. Notes.

4

ADDITIONAL DATA FILED IN THE

BUREAU OF MINERAL RESOURCES

The following additional data relating to Mulgoa No. 2 Well, have been filedin the Bureau of Mineral Resources, Canberra, and are available for reference:

(i) Well Completion Report 22 pp.

Appendix

Appendix 11

Appendix III

Appendix IV

Appendix V

Appendix VI

Core descriptions

Micropalaeontology by Irene Crespin

Gas analyses by Chemical Laboratory,N.S.W. Department of Mines

Water analyses by N.S.W. WaterConservation and IrrigationCommission

Coal analysis by Chemical Laboratory,N.S.W. Department of Mines

Porosity and permeability determinationsby Bureau of Mineral Resources

5 PP.

2 pp.

1 p.

2 pp.

1 p.

1 p.

(ii) Daily well logs for period 29th September, 1958 to 3rd June, 1960.

5

MOUNT HUNTER NO. 1

of



7

MOUNT HUNTER NO. 1


SUMMARY

Mount Hunter No. 1 Well was located in the Sydney Basin approximately threemiles west of Camden, New South Wales, and 17 miles south of Mulgoa No. 2. The well wasdrilled by the Operator, Australian Oil and Gas Corporation Limited, using a Bucyrus Erie28-L cable-tool rig, to a total depth of 3512 feet. Drilling commenced on 26th October, 1961,and was completed on 5th February, 1962. A programme of coring, gas and water sampling,and Gamma-Ray logging was undertaken.

The well penetrated 2111 feet of Triassic shales and sandstones and 1401 feetof Permian coal measures, sandstones, shales, and siltstones.

Mount Hunter No. 1 was drilled to obtain stratigraphic information and to testthe petroleum potential of the Triassic and Permian sediments in a structure located byseismic survey.

Several gas producing horizons were intersected by the well but the yieldswere too small for economic production. The well was plugged at 300 feet and the upperportion was left open for conversion to a water bore.

The stratigraphic drilling operation at Mount Hunter No. 1, New South Wales,was subsidized under the Petroleum Search Subsidy Act 1959, from surface to total depth.

* Abstracted from: Well Completion Report, Mount Hunter No. 1, Sydney Basin, New SouthWales, by D. Rose, Australian Oil and Gas Corporation Limited, March, 1962.

9

General Data


WELL HISTORY

Mount Hunter No. 1


340

03'30"S.150

038'50"E.



Total Depth:




Date rig released:

Elevation (ground):

Elevation (floor level):

Status:

Cost:

Drilling Data

Drilling Plant:

Make:Type:


Petroleum Exploration Licence No. 13, issued by theState of New South Wales

3512 feet

26th October, 1961

5th February, 1962

3rd March, 1962

3rd March, 1962

282 feet


Left open to 300 feet for conversion to water bore

£16,083

Bucyrus Erie28-L Cable Tool Spudder

Hole sizes and depths: 17"12l,i2"

8718"6"

to 51 feetto 1065 feetto 1730 feetto 3512 feet (T.D.)

Casing details:

Size (in.):Weight (lb./ft):Setting depth (ft):

13Ml4851

10

9M336

1065

651820

14831730 (final)

Logging and Testing

Ditch Cuttings:

Interval:

Coring:

Gas Testing:

Gamma-Ray logging:

Stratigraphy

Wianamatta Group (Triassic)

Sampled at end of each drilling run which varied fromtwo to ten feet.

Eleven coring runs were made using a Baker corebarrel and 5 MI" bit (core diameter 2 ]/16"). Atotal of 61 feet was cored and 39'8" recovered (65%recovery).

Well head flow rates were determined using a 2" orificewell tester. Gas samples were submi tted to theN.S.W. Department of Mines for analysis.

Gamma-Ray logging was carried out by the Bureauof Mineral Resources.

GEOLOGY

Surface to 180 feet

Blue-grey silty shale with a little grey, fine-grained lithic sandstone nearbase.

Hawkesbury Sandstone (Triassic) 180 to 747 feet (567 feet)

White, coarse-grained, quartz sandstone with thin bands of blue-grey siltyshale.

Narrabeen Group (Triassic) 747 to 2111 feet (1364 feet)

The Narrabeen Group is subdivided, somewhat arbitrarily, into the GosfordFormation, and the Clifton Subgroup.

Gosford Formation 747 to 861 feet (114 feet)

Grey, fine-grained lithic sandstone grading downwards into coarse-grainedquartz sandstone. Interbeds of blue-grey silty shale are common.

Clifton Subgroup 861 to 2111 feet (1250 feet)

This section consists of the Collaroy or Bald Hill Claystone from 861 to1004 feet - mostly chocolate shale and interbedded grey shale and coarsegrained sandstone - and an undifferentiated series consisting of coarsegrained to conglomeratic sandstone with thin bands of grey silty shale andsome grey siltstone.

11

Lithgow Coal Measures? (Permian) 2111 to 2432 feet (321 feet)

Interbedded, blue-grey silty shale, grey, medium-grained to silty sandstone,grey to black carbonaceous shale, buff to cream chert, and coal seams from 4to 18 feet thick.

Tomago Coal Measures? (Permian) 2432 to 3338 feet (906 feet)

Interbedded, grey, medium-grained sandstone, grey siltstone, blue-grey toblack shale, grey and white chert, and a few thin coal seams. The shale is carbonaceous in parts and the sandstone may be conglomeratic. The interbedding isirregular.

Capertee Group (Permian) ; 3338 to 3512 feet (174 feet+)

Grey, calcareous, fine to coarse-grained sandstone with thin limestone bandsand dark grey shale in parts.

Structure

Mount Hunter No. 1 Well was located on east dipping sediments in an areawhere seismic, aeromagnetic, and geological surveys had indicated the possibility of localclosure resulting from very gentle folding, and of regional closure against the NepeanFault.


BUREAU OF MINERAL'RESOURCE~

The following additional data relating to· Mount Hunter No. 1 Well, have beenfiled in the Bureau of Mineral Resources, Canberra, and are available for reference;


Appendix A

Appendix B

Appendix C

Gas flow data

Water flow data

Gamma-Ray logging report

7 pp.

3 pp.

2 pp.

(ii) Description of cuttings

(Hi) Daily well logs for period 26th October, 1961 to3rd March, 1962.

12

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N'VIItII~3d

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....... ........ -- S31~3SN338 'V~~ 'VN--------:/~i-""'II;:-------- S3~nS'V3V'J 1 'VO~ ~3ddn ---~-+-!E3,...-;N....I~'VV'J ~3ddn

-----------------=:::..~_t_£__::::-------- 1t113.lSA.S~ISS'VI~.l1t113.lSA.S

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of

FARMOUT DRILLERS NO LIABILITY


13

1Vz.

DRG. No FD /2

'h

SCALE OF MILES

DRILLERS N.L.

AND GEOLOGICAL MAPSTRUCTURE CONTOURS ON THE

OF THE BUMBO BASALT

REVISIONS

.f---.- Fault ~-- Main road ---Secondary road

---+ Railway --- Boundary of PPL.7

o Rc:c;t:nt AllUVium

FARMOUT

LOCALITYSHOWING

BASE

FIG. 3

PETROLEUM PROSPECTING LICENCE No7 NSW

1/i~V,(/

W!, I!

. (/'-'-',

.~ I/

/Cl/(

\.\.

'--'-.-.....,.'\

)/

le .__./'

e lf ~A .

p ./,,--.------/.

\}

/t'\.

R HARE & ASSOCIATES

Date 2 4 1962

Drawn M, NOVOTNY

Prepared K FLETCHER

NOTE Geology qft~r L F Hqrp~r

1915

/'late464 1t aboveDunster- rruJ elevatIon

Sea L,vel

SPOT HEIGHTS DETERMINED BY ANEROID

Station R t: Cl din 9 . Adop~d

171 190 I~O /90'

2 168 172 170'

3 244 i?J8 240'

• 276 280'

5 243 ),.~-- 240'lr~verse.,l"UJ{~t.6te

• 224duv-na.{. ra.r atcr>ft

220'nofecl" 3-ere/,eafed

7 198 200 •

B 132 126 130'

g 1/7 121 /20'

10 164 160 /60'

11 //4 98 100 94 96 100

12r-- 184 /74 }12A /80'13 ,,",.v- 166

- /70'/60'164 150I. 122 liS 120 '

15 107 123 110 '

I. III //0 110'

17 159 168 /65'

1B 135 190 190 /90'

19 137 180 182 /80'

20 254 250 250'

21:~;:j~ 2// ?2/0'

22 205 214 210

23 344 336 350 348 345 345'

2. 34 36 35'

25

2. 140 140 /40'

27 247 245 260 250'

28 350 345 335 345'

29 250 255 250'

30 320 325 J20'

31 300 300 300'

32 275 27i? 270'

33 330 327 330 '

g:,

·co~

··c,o

4



SUMMARY

Stockyard Mountain No.1 Well was drilled in the Sydney Basin, about 10 l/2miles south-west of Port Kembla, on a surface structure known as the Stockyard MountainDome. The operating company, Farmout Drillers No Liability, drilled the well under afarmout arrangement with Consolidated Oil Limited, on New South Wales Petroleum Prospecting Licence No. 7. The well was drilled by Woodside (Lakes Entrance) Oil CompanyN.L., using a Brewster N.4 rig, to a total depth of 3516 feet. Drilling commenced on 30thJuly, 1962, and was completed on 12th October, 1962. A full programme of logging, testing,and coring was undertaken.

The well penetrated three feet of Recent alluvium and scree, 3282 feet ofPermian sediments and volcanics, and bottomed at 3516 feet in interbedded sandstone,siltstone, and shale of presumed Devonian age.

Stockyard Mountain No. 1 was drilled to test the petroleum potential of thecomplete Permian sequence on a known closed structure, the Stockyard Mountain Dome.

A number of porous interbeds were present between 1867 and 2060 feet in thePermian Nowra Sandstone, and the gas detection equipment recorded very small amounts ofhydrocarbon gas present in the drilling mud while drilling below 1890 feet. A drillstem test ofthe interval 1859 to 2110 feet yielded 560 feet of fresh water.

The stratigraphic drilling operation at stockyard Mountain No. I, New SouthWales, was subsidized under the Petroleum Search Subsidy Act 1959-1961, from surfaceto total depth.

* Abstracted from: Well Completion Report, Stockyard Mountain No. I, New South Wales, byR. Hare and Associates, March, 1963.

15

General Data


WELL HISTORY

Stockyard Mountain No. 1


340

35'41"S.150

046'53"E.



Total Depth:




Date rig released:

Elevation (ground):

Elevation (K.B.):

Status:

Cost:

Drilling Data

Drilling Plant:

Make:Type:

Consolidated Oil Limited, Cl - 375 George Street,Sydney, New South Wales

Petroleum Prospecting Licence No. 7, issued by theState of New South Wales

3516 feet

30th July, 1962

12th October, 1962

15th October, 1962

16th October, 1962

162 feet


Abandoned

£81,369

BrewsterN.4

Hole sizes and depths:

Casing details:

Size (in.):Weight (lb/it):Grade:Range:Setting depth (ft):

17"121/4"

83/4"

13 artl48H.40

2

55

16

tototo

9fvS36J.55

2

549

55 feet551 feet

3516 feet (T.D.)

Logging and Testing

Di tch Cuttings:

Interval:

Coring:

Electric and other logging(Schlumberger) :

Electric Log:Microlog-Caliper:

Drillin~Time and Gas Log:

Formation Testing:

Stratigraphy

General:

Ten feet from surface to T.D.

Fourteen cores were cut using a Hughes Type "J"core barrel with hard formation cutter heads. Atotal of 111.5 feet was cored and 92.25 feet (82.7%)recovered.

100 - 3515 feet (3 runs)100 - 3513 feet (3 runs)

A drilling time log was maintained below 200 feet.

Four drillstem tests were carried out during thedrilling operation.

GEOLOGY

The stratigraphic section encountered in Stockyard Mountain No. 1 Well istabled below:

Formation Lithology~

Intervals(feet)

Thickness(feet)

RecentPermian

Devonian

Gerringong VolcanicsBerry Shale

Nowra SandstoneWandrawandian

SiltstoneConjoia Beds

Alluvium and screeTuff and alluviumShale, siltstone, sandstone, and basalt between970 and 1250SandstoneSandstone, shale,

siltstoneRhyolitic and tuffaceousclaystone , with sandstone,siltstone, carbonaceousshale and minor coal.Basal conglomerate.White to pink siliceoussandstone, reddish-brownto light grey siliceoussiltstone, and maroon,red, brown, grey, andgreen shale.

17

12- 15 315- 45 3045-1610 1565

1610-2065 4552065-2549 484

2549-3255 706

3255-3297 423297-3516(T.D.) 219+

Detailed:

Surface to 15 feet (3 feet)Alluvium and scree.

Gerringong Volcanics (Permian) 15 to 45 feet (30 feet)

Interbedded, grey and brown, fine-grained tuff, brown chert, dark grey basalt,and light grey, fine-grained, quartz sandstone.

Berry Shale (Permian) 45 to 1610 feet (1565 feet)

This formation consists of a dominantly shaly unit to 362 feet, a siltstone unitto 840 feet, an interbedded unit of sandstone, siltstone, and shale to 970 feet, volcanics, dominantly basalt, to 1250 feet, and a second shale unit, with sandstoneinterbeds below 1371 feet, to 1610 feet.

The upper shale unit (45 to 362 feet) is dark grey, silty, hard shale, withminor amounts of grey, carbonaceous siltstone and fine-grained pyritic sandstone.The siltstone unit (362 to 840 feet) is mostly medium grey siltstone containing tracesof mica, pyrite, and carbonaceous material, with minor shale and sandstone as above.

The interbedded unit (840 to 970 feet) consists of interbeds of grey and brown,fine to medium-grained, hard sandstone, grey, hard, micaceous, siliceous siltstone,light grey, hard, dolomitic siltstone, and a few interbeds of shale and siltstonesimilar to those in the higher units.

The volcanics (970 to 1250 feet) include a dark to medium grey, porphyriticbasalt and grey-brown, porphyritic rhyolite with bands of fine-grained sandstonein the upper part and buff to grey siliceous dolomite near the base.

The lower shale unit (1250 to 1610 feet) is mostly dark grey to brown andblack micaceous shale with interbeds of sandstone similar to that in the higher units.

Nowra Sandstone (Permian) 1610 to 2065 feet (455 feet)

Light grey to white, fine-grained to very coarse-grained sandstone, generallysiliceous but kaolinitic and calcareous inplaces. Porous zones were noted and testedbut fresh water only was recovered.

Wandrawandian Siltstone /Permian) 2065 to 2549 feet (484 feet)

Interbedded, grey-brown, fine-grained sandstone, dark brown to black, silty,carbonaceous, micaceous shale, and grey to black, tuffaceous, argillaceous siltstone. A thin bed of finely crystalline fossiliferous limestone was noted between2380 and 2390 feet.

Conjola Beds (Permian) 2549 to 3255 feet (706 feet)

Interbedded basic volcanics, tuffaceous claystone, siliceous sandstone, argillace_ous and tuffaceous siltstone, carbonaceous shale, and minor amounts of dolomite,conglomeratic sandstone, quartzite, and coal.

18

Basal Conglomerate (Permian) 3255 to 3297 feet (42 feet)

The basal unit of the Permian is a grey conglomerate containing pebbles andcobbles of quartzite, sandstone, chert, siltstone, schist, and slate.

Devonian Sediments 3297 to 3516 feet (219 feet+)

Interbedded, light green to pink, siliceous sandstone; grey to red-brownsiltstone; and red-brown, grey, maroon, and green shale. No fossils were foundand the age was assumed to be Devonian.

Structure

Stockyard Mountain No. 1 was drilled on a domal structure having an area ofapproximately nine square miles and a closure of 200 feet on the base of the Bumbo Basalt.There is no certain evidence that the structure extends downwards in the Permian sediments.Dips measured in COJes 13 J3415 to 3425 feet) and 14 (3511 to 3516 feet) taken in the Devonianbeds vary from 6 to 15 and are in keeping with the angular unconformity between theDevonian and Permian strata.

Occurrence of Hydrocarbons

Minor showings of gas were encountered in Stockyard Mountain No. 1, but nonewas of commercial significance. A Johnston Williams hot filament type gas detector and aHoneywell recorder were used for the detection of hydrocarbon gas, and the readings usedin the preparation of a gas log. Below 1890 feet very small traces of hydrocarbon gas weredetected in the drilling mud.

Porosity and Permeability

A number of thin porous beds are present in the Nowra Sandstone between 1867and 2059 feet. These beds total 51 feet; the pOl"osity is estimated to range between 10 and14 percent. Permeability appears to be poor. A test of these porous beds yielded 560 feetof fresh water. Two thin porous units are also present at the top of the Wandrawandian Siltstone. These were included in the drillstem test of the porous unit of the Nowra Sandstone,which yielded fresh water. Micrologs indicated that several thin porous stringers appear tobe present in the Wandrawandian Siltstone between 2307 and 2324 feet. These total in theaggregate less than four feet and are probably fresh water bearing. Several thin streaks ofporosity each less than one foot, may also be present in the basal Wandrawandian between 2536and 2541 feet. Elsewhere, the section penetrated in the Stockyard Mountain No. 1 Well wasnon-porous.

19



The following additional data relating to Stockyard Mountain No. 1 Well, havebeen filed in the Bureau of Mineral Resources, Canberra, and are available for reference:


Appendix 1 Petrological report by W.A.J. Saunders 1 p.

Appendix 2 Petrological report by D.R. Pinkstone 1 p.

Appendix 3 Palynological report by J.P.F. Hennelly 1 p.

Appendix 4 Water analysis, D.S.T. No. 4, by 1 P"Geological Survey of N.S.W.

Appendix 5 Core analysis results by Bureau of Mineral 1 p.Resources

Appendix 6 : Electric logging

(ii) Daily drilling reports for period 30th July, 1962 to16th October, 1962.

(iii) Well logs inclUding the following:

(a) Electrical Log

Run 1, 100- 970 feet (2",5" = 100 ft)

Run 2, 970-2081 feet (2",5" = 100 ft)

Run 3, 2081-3515 feet (2",5" = 100 ft)

(b) Microlog

Run 1, 100- 969 feet (2",5" = 100 ft)

Run 2, 969-2079 feet (2",5" = 100 ft)

Run 3, 2079-3513 feet (2",5" = 100 ft)

20

1 p.


of


and

EXOIL (N.S.W.) PTY LIMITED


21

FIG. 4.,

16!

Sozdim'mb

12,

Caputozoz Group

Lithgow Cool MlZasurn

Hawkubury Sand stonoz

Narrab<Zozn Group

Wianamatta Group

8!

No.1 WELLREGIONAL GEQlOGY

In miles

LEGEND

TERTIARY Volcanic!!

TERTIARY & QUATERNARY

SCALE

4I

D

::JPER"'AN

o!

21

KU RRAJONG HEIG HTSLOCATION AND

8AY

"Rh,

, '0" , •• ,, <<0. ~, •

, ,~. ''l~ ~ •

'~?~''::'fIV •. . J!'. 'f{.~ .

..~

E. A. WE BB

May, 1963


SUMMARY OF DATA AND RESULTS*

SUMMARY

Kurrajong Heights No. 1 Well was. located in the central-western part of theSydney Basin, about 12 miles west-north-west of Windsor, New South Wales, and approximately 19 1/4 miles north of Mulgoa No. 2. In 1955, the well was drilled by Australian Oil andGas Corporation Limited, to 4756 feet where drilling was suspended. In 1962, Exoil (N.S.W.)Pty Limited, under a farmout agreement with Australian Oil and Gas Corporation Limited,deepened the well to a total depthof9132 feet. The same rig, a National-Ideal 55, was used todrill both sections of the hole.

The drilling contractor, Oil Drilling and Exploration Limited, commenced drillingat Kurrajong Heights No. 1 On 11th February, 1955. Operations were suspended on 2ndAugust, 1955, at 4756 feet. The contractor resumed drilling on 23rd July, 1962, and thewell was abandoned on 25th November, 1962 at total depth 9132 feet. A full programme. oflogging, testing, and coring was undertaken.

The well penetrated 2899 feet of Triassic sediments, predominantly sandstone,4950 feet of Permian sediments, chiefly sandy siltstone and sandy shale, and was abandonedat 9132 feet after drilling through 1267 feet of volcanics of supposed Permian or Carboniferous age.

The objective of the well was to test the petroleum potential of the Triassic andPermian sediments over a structural "high" indicated by geological survey. The Triassicand Permian sediments down to 4495 feet included suitable reservoir rocks, but the Permianbelow 4495 feet, although partly marine, did not appear to contain suitable source beds.

No significant shows of oil or gas were recorded and no significant fluid wasrecovered from twelve drillstem tests at depths ranging from 1046 feet to 7997 feet.

The stratigraphic drilling operation at Kurrajong Heights No. 1 was subsidizedunder the Petroleum Search Subsidy Act 1959-1961, from 4756 feet to total depth.

* Abstracted from,Well Completion Report, Kurrajong Heights No. 1, New South Wales, byJ. Stuntz, Australian Oil and Gas Corporation Limited,R.G. PerrY,Bullock and AssociatesPty Ltcl, and E.A. Webb, Consulting Geologist, May, 1963.

23

General Data


WELL HISTORY

Kurrajong Heights No. 1


o33 31'45"S.o

150 37'15"E.



Total Depth:


Date dril~ing suspended:

Depth when suspended;

Date drilling recommenced:



Date rig released:

Elevation (ground):

Elevation (K.B.):

Status:

Cost:

Drilling Data

Drilling Plant:

Make:Type:


Petroleum Prospecting Licence No. 2, issued by theState of New South Wales

9132 feet

11th February, 1955

2nd August, 1955

4756 feet

23rd July, 1962

21st November, 1962

25th November, 1962

25th November, 1962

1863.5 feet


Plugged and abandoned

£ 157 ,516 (1962 drilling)

National-Ideal55

Hole sizes and depths: 17112"121/4"

8 :}'4"

24

to 709 feetto 2175 feetto 9132 feet (T.D.)

Casing details:

Size (in.):Weight (lb.1ft) :Grade:Range:Setting depth (ft):

Logging and Testing

Ditch Cuttings:

133/848H.40

3681.5

95;836J.55

32164

Intervals:

Coring:

Electric and other logging:

(i) 1955

Electric Log:

(ii) 1962 (Schlumberger)

Electric Log:

Microlog:

Caliper Log:

Gamma Ray Log:

Temperature Log:

Velocity Survey:

Drilling Time and Gas Log:

Formation Testing:

Ten feet from surface to 740 feet. Five feet from740 to 9132 feet (T.D.).

Thirty-six cores were cut using a Hughes "J" Typecore barrel with hard formation cutter heads. Atotal of 305 feet was cored and 219.3 feet (71.9%)recovered.

720-4755 feet (2 runs)

642-9129 feet (3 runs)

2164-9127 feet (2 runs)

642-3742 feet (1 run)

20-9128 feet (1 run)

24-1874 feet (1 run)

The well was surveyed to a depth of 9000 feet byPetty Geophysical Company.

The log was maintained below 4756 feet by CoreLaboratories Inc.

Drillstem tests were run using a JOhnston full-holeType "0" tester. Seven zones were tested with a total of twelve drillstem tests; seven were successfuland five were mis-runs. No significant fluid wasrecovered in the drillstem tests.

25

GEOLOGY

Stratigraphy

General:

Tabled below is the stratigraphic sequence encountered in Kurrajong HeightsNo. 1 Well:

Permo-Car- Volcanicsboniferous(?)

Triassic

Triassic

Permian

Permian

Permian

Detailed:

Formation

Hawkesbury Sandstone

Narrabeen Group

Lithgow Coal Measures(?)

Tomago Coal Measures(?)

Capertee Group

DepthIntervals Thickness

(feet) (feet)

16- 740 724+

740-2915 2175

2915-3367 452

3367-4495 1128

4495-7865 3370

7865-9132 1267+(T.D.)

Hawkesbury Sandstone (Triassic) Surface to 740 feet (724 feet+)

White, medium to coarse-grained, quartzose sandstone, conglomeratic in part.

Narrabeen Group (Triassic) 740 to 2915 feet (2175 feet)

740- 780 feet780-1020 feet

1020-2665 feet

2665-2915 feet

Quartzose sandstone and grey shale.Red shale, grey shale, and sandstone.White, medium to coarse-grained sandstone, conglomeratic inlower part, with thin shale beds.Shale and sandstone, conglomeratic in part.

Lithgow Coal Measures (?) (Permian) 2915 to 3367 feet (452 feet)

A sequence of grey shale, sandstone, white cherty shale, carbonaceous shale,and coal seams. This section is regarded as a possible equivalent of the LithgowCoal Measures.

Tomago Coal Measures (?) (Permian) 3367 to 4495 feet (1128 feet)

Grey shale, sandstone, and siltstone, with a few coal seams; regarded as apossible equivalent of the Tomago Coal Measures.

26

Capertee Group (Permian) : 4495 to 7865 feet (3370 feet)

Grey sandy shale, sandy siltstone, and dense quartzose sandstone with thin coalstringers in the upper and basal parts. A dense, white, conglomeratic sandstoneoccurs from 6217 to 6285 feet. The lower 68 feet contain carbonaceous shale withplant remains. The full sequence is regarded as the equivalent of the Capertee Group.

Volcanics (Permo-Carboniferous?) 7865 to 9132 feet (1267 feet+)

Altered (weathered?) basalt, probably spilitic; rhyolite, and rhyolitic weldedtuff.

Structure

Kurrajong Heights No. 1 Well was located in the structurally high area betweenthe Kurrajong Fault to the west, which downthrows 400 feet to the west, and the LapstoneMonocline , which trends north and dips 1100 feet to the east. The monoclinal axis lies aboutthree miles east of the well. Local closure in the Hawkesbury Sandstone occurs against theKurrajong Fault.

Relevance to Occurrence of Petroleum

No significant signs of petroleum or natural gas were encountered in the well.A gas detector was used from 4756 feet to total depth. A small gas kick of only twelve unitsoccurred while coring in fractured lava at 7990 feet.

The upper part of the section to a depth of 4495 feet consists of Triassic andPermian non-marine sandy sediments. These sediments may contain reservoir beds but areunfavourable as source rocks.

Marine Permian strata occur from 4495 feet to the top of the lavas at 7865 feet.Thin coal seams are present so the rocks may be in part non-marine. The lithology is predominantly sandy shale and sandy siltstone with sparse organic remains. These rocks do notappear to be favourable source rocks for petroleum.

Porosity and Permeability

The lithological examination of samples showed bands of poor to good porosityin the Triassic sandstones.

Most of the sandstones between 2915 and 4495 feet were heavily cemented althoughporosity was evident on occasion. Sandstone from 3987 to 4000 feet showed good porosityand probably had good permeability; very little cementing material was present. Althoughcoal produced the most prolific gas bleeding the permeability of the seams was impossibleto assess from the electric log because of the thinness of the seams.

The sandstones between 4495 and 7865 feet are solidly cemented with silicaand have very slight porosity, if any.

27

CROOK, K.A.W.,

HANLON, F.N., et al.,

RAGGATT, H.G.,

WILLAN, T.L.,

1956:

1953:

1938:

1925:

REFERENCES

The geology of the Kurrajong-Grose River District.M.Sc. Thesis. University of Sydney. (Unpubl.).

Narrabeen Group: Its subdivisions and correlationsbetween the South Coast and Narrabeen-Wyong Districts. J. Proc. Roy. Soc. N.S.W., 87, 106-120.

Evolution of the Permo-Triassic Basin of EastCentral New South Wales. D. Se. Thesis. Universityof Sydney, (Unpubl.).

Geological map of the Sydney District. Geo!. Surv.N.S.W. Dept Mines.



The following additional data relating to Kurrajong Heights No. 1 Well, havebeen filed in the Bureau of Mineral Resources, Canberra, and are available for reference:


Appendix A Core analyses by Bureau of Mineral 1 p.Resources

Appendix B1 Descriptions of Cores Nos 19-36 8 pp.

Appendix B2 Petrographic reports by D.R. Pinkstone 3 pp.

Appendix C Palaeontological reports 2 pp.

Appendix D Formation tests 1 p.

Appendix E Velocity Survey 4 pp.

(H) Daily drilling reports for period 13th July, 1962 to 25th November, 1962.

(Hi) Well logs including the following:

(a) Electrical log

Run 1, 642-2292 feet (1",5" = 100ft)

Run 2,2292-6791 feet (1",5" = 100 ft)

Run 3,6791-9129 feet(1",5" = 100 ft)

28

(b) Microlog

Run 1, 2164-6789 feet (1" ,5" = 100 ft)

Run 2, 6789-9127 feet (1" ,5" = 100 ft)

(c) Caliper Log

Run 1, 642-3742 feet (1",5" = 100 ft)

(d) Gamma Ray Log

Run 1, 20-9128 feet (1",5" 100 ft)

(e) Temperature Log

Run 1, 24-1874 feet (1" ,5" = 100 ft)

(iv) Velocity Survey determinations, Kurrajong Heights No. 1.

29

PLATE ISHEET I

COMPOSITE WELL LOG

AUSTRALIAN OIL AND GAS CORPORATION LTD

MULGOA No. 2

LOCATION: o , " 0 I "

Lot. 33 48 28 S. Long.150 38 15 E. REFERENCE

DATE SPUDDED: 20th Sept. 1958

DATE COMPLETED: 5th Nov. 1959I ,

ELEVATION: Ground level 497: Floor level (reference) 501

I~ :: ~ : :1 Sandstone

F=-__=.=1 Shale

I";;;:I Limestone

I I Coal

HOLE SIZE

CASING

DIAMETER

CORES

aRECOVERY

DEPTH

IN

FEET

0/0

LITHOLOGY GAS a WATER DES CRI PTI VE LITHOLOGY STRATIGRAPHY

- 800 - .. . .

>Cl:::::::>COenw~

~«J:

wzo~enoz«en

uenen«

:ElJJ~en>en

a..::::::>oa::(!)

zwwCO«Cl:Cl:«z

a..::::>oa::(,!)al::::>Cl)

Iw-I<{Ien

gwI.L..Ien<{

zo~l1..

-IU

,

,

,70-850 SANDSTONE', white to light greY,less commonly

yellow and brown; medium to coarse-grained,in some beds tending to grit, grains generally

subangular to subroundedi dominantly quartz,

some cher!, muscovite, ilmenite and felspor;

scattered pebbles; cement clayeY,hard and

generally tight. Some thin interbeds of SHALE', grey,

soft, generally sandy and micaceous.

1085-1958' SANDSTONE', whitish-grey to light grey, fine tocoarse-grained, well-sorted subangular andsubrounded grains,mainly clear quartz, inter.bedded

with SHALE'. grey to dark greY,micromicaceous.

,985-/085 SANDSTONE, light grey, fine to coarse- grained,

subangular to subrounded quartz grains. Somethin Interbeds of SHALE', grey, micromicDceous .

1958-2450' SANDSTONE',light grey to grey, medium tocoarse-grained, finely conglomeratlc in partwith thin interbeds ot grey SHALE'.

950-985 SHALE',chocolate coloured and SHALE, light grey,commonly hard, siliceous tending to fine.grainedquartzite.

2450-2498' SHALE, grey to dark grey, in part fairly hard withconchoidal fracture, interbedded with SHALE,light grey to grey, sandy.

0-70' SHALE, dark grey to black, carbonaceous, fairlyhard with SANDSTONE, grey and yellow- brownin thin flaggy interbeds near base.

1-2498 -2506' COAL, dull with few thin very bright bands.

IIJZoI(J)

>-I-------::--------------------+:)---t---i850-950' SHALE, grey, in places mlcromicaceous or sandy U 0

interbedded with and overlying SANDSTONE', ~ ~ .light grey, medium to coarse -grained, ill sorted, ::c 1.L..:2:

o en l1..predominantly angular to subangular, mainly quartz, <i 0some darker minerals. ID (,!)

I

Small flow of gasShuf In 650 p,sJ

,- 480 Sfrtmg supply of fr~sh

water

- --

..~. .'--";:

• • • I

. or,:

: .L;" -,L....==-==---==\

:~

- - - -- - - - -

: : ~ - 1839'Large supply of brackish• • waf.r

: ~Q: 'd- 2065'..

• • 'r='=• • L...=..

-1775' Small supply of btTlcklshwater

-- 1620' Small gas flow

- /450' Fair supply of brackl.h., .. ':.= waf.r

- 1400,'Larg. supply of brackish___--1412 waf.r

.... r.. " .. £

:::.~.~ .=-- 1675'Small supply of brackish-- wat.r· . .. .-...... -· .· -

-_1095}- /105' Bracklllh wafer In fair

• . _ /123' lIupply

. , -- -------=-=-....---.. -

· . . . . .

'" 'r::::=-I •••~· . . ..

• .....:-:...r.. -· , ." . .:s· 'r--=-

· . • "=-,-• • • ••e:::!:=.

:'~: : ._....:=--==- -.. , --..... , . -• I •••••::: "i~ ,· . • • • . "- - 1310 V.ry small gas flow• ••. " ---1315}· . _ FaIr lIupply of "radish: : : : '. :. __ , woW· ••. , ., . -1358

:: :: :~'''':'-=]i -1510', Fair supply of brackish• • • • •• -- -1520 water· -· •...••. It •••• :....-_

· : : : : [· f:· :. :::.r.

····i~·-......... -.... ----.......... - -· -· .: : : : : : . '-:::· .....••. •0. ~jg'· ..... , ;-.... " . --:::: ::.~~~:0: : : : : : :~

.~---='or-_-_......-_- _---=--.- -- --.. :.~.

.. ~• •••••• '''''""1..· .

-=========~------...... .....=-

~ 100 - ::::::.~

~ 1200-

~ 1400 -

~ 1300-

- 2400-

- 900--

- 1100 --

- 2300-

- 700-

- 2200-

-- 1500 -

-- 500 - .

- 300-

- 2100 -

- 400 - "

- 1900 -

: : 'r-J:... , ..~· 'r-!=

:0: : )TI]---=:=...... -~-· .: : : : : : : :~· .: : : : :0: : : :· . . .

':o:·::~;:~, •• E

.::~.:~.....:.-=.::" --=-- - --::::.=-=-: :0: : . ~ =-"Ja"'~:"--...... --'. " •• , 0-.... -.-~

.··.0·· -

.' . - -

.' - - -..... ...::,-~- - - - t-=-=.------r-=-=-=-=-=- 2500 --{l.--t!!!I~_.-· . ·t - -=-· ',;r-

· 1-=--

-- 1800 - •

r- 1600 -

r- 1700 -

I- 200-

.... 2000--

2

1

3

Rec. 3' 3"

Rec 6' 0"Dip 7°

..=:::L-. __ _ _

- -7(----.. ..~

- 1000 - ., .,.. '-

.,....:......:J

Rec 4' 9"Dip 6°

,• • • • " - 569 Strong lIupply of fresh

.. ., "E:: wat.r

- 600 -- :: ".:C=:::=:• j

.. :::~

X AUS- 2 -33A

MULGOA No. 2

PLATE ISHEET 2

HOLE SIZE

CASING

DIAMETER

CORES

SI

RECOVERY

DEPTH

IN

FEETLI THOLOGY GAS SI WATER DESCRIPTIVE LITHOLOGY STRATIGRAPHY

••iiii.iliE~1-2841' Small gqS flow

I '.~: : : : ',~-=I-Z859 Small supply of solfyf-J- -------_ wat.r.f-_-_-_-_-_

enw0::::::>en<tw~

..J<toU

(\..

.zW..J

~:::>ow

enw0::::::>en<tw~

..J«ou

2589-2865' SHALE, grey to dork grey, interbedded with thin

COAL seams and grey fine to medium - grainedlithic SANDSTONE.

,2865-3597 SHALE, dark grey to black, carbonaceous in

part, interbedded with grey SILTSTONE,

fine to medium-grained grey lIthic SANDSTONE,and few thin COAL bands.

2506- 2579' SANDSTONE, grey, medium-graIned, speckled

appearance, part loosely cemented, port clayey

cement, with some interbedded SHALE,grey.

2579-2589' COAL, blaclr, bright, good quality,

Gas flow 3 Mcf/O

Gas ffow 5 Mcf/O

Large gas blow ou t

Gas ffow 2 Mcf/O

2562' Fqir supply of salty, lIIot.r

2579 Larg. gas blowout andlorg. supply of soffywaf.,

. . ~

.. - - -

f- 2600-

I- 3000 ---:===-=:.:====== ==:----------:====--===---------:

'. - --f- - - ---e.-- - - - -

I- 2800 -1--:'-=-:-=-1---------1----------

I- 2700 -

1-2900 -1-=-=-=-=-:-1---------- ------------------------ - --:-=-=---..:-" . 1------

: ':t - - ~-

6

4

Rec. Nil

Rec. 2' 0"

5 -=-=--- -:~---_d-3100 -----------Rec. 4' 0"

~~~=~~===- -= =:

I- 3200 --=-- --- -= ,- - - - --- - --f_3210

~-- ---- --

;:=~== ~==~~=-- =- =:e.-3300 -1----------I- - - _

':-:--- - - - -

., ..~--eo •• :F.-I:~-=-~~--;~~---

e.-3400 -1'1:===~-===~.. '- - --.. ,--------: ---=-=-=-1-3445." - -· .. , -----

, =-=---=-

e.-3500 -:: :.~===I-=::e-.....,_-- - - -

. ~'::"='-==:f-3536'...... --· -------- ,

: : : : :: ~1-3559e.- 3600 -

.~----

':~'"':---... --- - -": . . --

----- ---I- 3700 " ... L- _-

: : :C=:::'-=-=· ..~----~~'--==----==:· - - -- --

~_.7=====::r1..-3800-~;~:: ::'-;~... . .. - - -Rec.2'4N• ,. -----.. =-=-=-· .0- _

§=~===-~~~1-3900 -~=~_~=~

I- - - - -_

I- 4000

., --..=---

f..-.,,=-"'=-.J_.-_-_

_t==-====-=:1-_--------

~::~~~::~I:: eo: :F=----

,3597-4062 SHALE, darlr grey to blaclr, in port carbonoceous,

with thin COAL laminae, interbedded withfine to medium-grained grey SANDSTONE,with- some laminations grey LIMESTONE.

~

lJJ.....Cl)

>Cl)

I- 4100 -----------1-----1------ - -1----------:====-== =]1---------1---------1---------1----------1-4200 -1---------

~_-8--~ 1-__-_-_-_-

Rec.5' OH ~~~=~===~~~-1----_---:---1--------1--------1---------1-4300 -1----------1---------1---------f_---------

f_-- - - --

t====-==-~~-1---------1---------1-- - - -

~4400 -f-=- --=_ =f-_-_-_-_-_~ =--- ---~:=-=-===Jf_=-_---=-=.1----1----------1----------

I- 4500 f-=-=-=---:----------

10--R·ec.,i7I11!1'·01ll!!,,'-- 5000 -

z«-~

0:::lJJa..

a.:::>o0:::C)

wWto::lJ.Ja.e:::(

u

4936-5027' SANDSTONE,light grey, medium to coarse-grained,in port conglomeratic, pebbles up to 2~ mainlyquartz and chert, light hard siliceous cement.

,4762-4936 SHALE, dark grey, silty, interbedded with dark

grey micaceous SILTSTON£ and fine tomedium-grained whitish-grey SANDSTONE,in part calcareous, Traces of white calcite.

4062-4762' SHALE, grey to dark greY,silty, micaceous, interlaminated with grey to dark grey SILTSTONE,calcareous In port, some calcite veining.

Gas flow I Mc f /0 andsmall supply of solfy/fIof.r

Gas ffow 2'6 Mcf/Oand small supply of

solfy wof.r.

.0:

1---------h--------------· --=.... -=-=-=

-------- - -- --

- ------------------

_ ._=-- =~f-484/

f-4800 -

~~===~1------ ~=@: : : : : ::1=:--1-4590

4600 -I:J========:IJ=:-------~ =-=-=-=-1----------

I:S=======~1--4700 -:1-=-=---=-.1- - - - -+--=-=-=-

Pm--------

1-4900 - ~:~_===?E·.. --=--~.... -..... -'M-• ,1I:l

9

Rec. 5' 0"

W....Jo:I:

Ec

~o;:::..rJJ

lO

-5100 -

.' ~ .-==:,,--==~- -:tJ

---=-=-

1-5300 -

· '--------

· ------~~--"-------- - -"- - -- - --f-- - - -

1-5200 _M==~===~=~._---

I-=-=-=-=-I:r1-_-_-_---IIf__ - _ - ~-_ -I:r1---------11------------~· - --. - - -- -.. - --

------=1- -- - -- - -

5027-5630' SHALE and SILTSTONE, dark grey, micaceous,sandy with pebbles of quartz, chert and slate,with beds of SANDSTONE, dork grey, mediumgrained with scattered pebbles and abundantshaley matrix; CALCITE occurs mainly os shellfragments, in part possibly os vein material.

- - ---------'. ----=-- - --- - - -11 _-_-__

I--R-ec·.-6-'-O-,,-L5400 -: --======

~:.~~=_==== <1-5445.. --[

:: -=-=-=:-

-I~;-=~~;}· ---_........_-- - -._----- - --· - - --

Gas flow inifiolly

30 Mcf/O also 70g.p.h.wot.r·

-~

5630

12Rec.7' 0"Dip 6°

e.- 5600 _ _ -i;;:::::;;I- - -

1-=-=-=-=-=T.D. 5630

X AUS-2 - 338

COMPOSITE WELL LOGPLATE 2

AUSTRALIAN OIL AND GAS CORPORATION LTD

MOUNT HUNTER No.1

REFERENCEo 1 n 0 I "

LOCATION' Lot. 34 03 30 S. Long. 150 38 50 E.

DATE SPUDDED: 26·10'61.

DATE COMPLETED: 5·2'62

RADIOACTIVE LOG: B.M.R. Failing Logmaster (A. Radeski operator)

ELEVATION: Ground Level 282' A.S.LDerrick Floor 285' A.S.L.

I:::~'?-::::.~ ?~:{.~ ~~:I

~=--=--~g~~~

Sandstone

Shale

ChocolateShale

Cool

lA A Ato (j, to 61 Chert

z«-:Ea:LLIc..

~LLIlf/)

>f/)

~LLIlf/)

>f/)

>0=::>mCl)LaJ~

;=«::I:

LaJZo.....Cl)

oz«Cl)

I'

Cl)LaJ0==>Cl)

«LaJ~

-l«0

Cf) <.)wet:~ 0=Cf)

« LaJw Q.:2 0-

=>.J«00

0(.!)

«:20I-

0-f/)en«-

n- o:=> I-00=(!)

ZLaJLaJm«0=0=

n. «:::J

z0a::l!lm~Cl)

z0l-LL.J<.)

STRATIGRAPHY

"1/ \V "

IJ

) r\ ) ~ ) ~Cl)wet:~Cf)

«LLI:2.J

~<.)

~0(.!):::J:I-:J

"

I

Sandstones with interbedded coal seams.

Sandstones with interbedded s·hales.

Sandstones and shales with carbonaceousshales and coal bands.

Shales and sandstones with coal seams.I ,

Coal seams at 2111-2129, 2186- 2190.2349-2356~ 2423- 2428~

2111'

Coarse - grained quartz sandstones.

Blue - grey shales.

DESCRIPTIVE LITHOLOGY

747'

180'

CORES

GASSHOWS

LITHOLOGY

2900

DEPTH

CASING LEFTIN HOLE

CEMENTPLUGS

, ,

LOGGAMMA RAY

~ --

L.' ,

....... --. --'"

+33JII!

-~.. 1-.

.1_

""l -_.~ -.. --

.~_~__5_.-.,.-.'::=-r-------."-,---t:===:::t:;;:-~-

. .

~

'-,_... -.=,-

:.-~.~ .

w ~'

Eoo

W...Jo::z:

HOLE SIZE

CASING

DIAMETER

_.-~t _.~..

.... ........--

_.......1 '''I..--~-.b!-L ,:.-===----

I---11.

Rec. 4' 6"

Sandstones with thin limestone bands.

3512'

0: UJ~ Z0 0=et:(.!) «Cl)uJ

~LLI

LLI 0=0=I-et: UJUJLLI Q.CI)a.. Q.« :::> ,lJ<.)

____1-"-------- ~ -----

3I

PLATESHEET

N. L.No.'

WELL LOGFARMOUT DRILLERS

STOCKYARD MOUNTAIN

CO MPOSITECOMPANY:WELL NUMBER:

PETROLEUM TENEMENT P. P. L. No.7STATE: NEW SOUTH WALES 4- MILE SHEET. WOLLONGONG BASIN: S Y D N E Y WELL STATUS: ABANDONED

N.E. CR. Portion 48, Terry Mlladow Subdivision of

thll Parish of Jambllroo

Lot.. 34035'4( S. Long. 150 0 46' 53i

D A TALOCATION

ELEVATION Klllly Bushing 174·3

Ground Lllvlll 162· 3'All mllasurllments from K. B.

ELECTRIC

RUN No. / Depth Scalll

Datll

Fir3t Reading

Last Reading

Interval Measured

Casing Schlumberger

LO G

Aug. 15,62

970'

100'

870'

2Sept 4,62

2081'

970'

I " I'547'

3

Sllpt 12, 62

3515'

2079'

1436'

547'

MICROLOG

CA LIP ER DATA

1 2 3Aug. 15,62 Sept. 4,62 Sept. 12,62

969' 207'3' 3513 '

100' 969' 2079'

869' 1110' 1434'

547' 547' FARMOUT DRILLERS N. L.

oRG. No. F. 0./13

VERTICAL SCALE I inch = 100 ft,

REVISION

COMPOSITE WELL LOG

STOCKYARD MOUNTAIN NO.l WELL

R. HARE & ASSOCIATES

Date: January. 1963

Drawn: I. Rade

Prepared: J. Cundill

5 hours

C -347

2 hours

C - 347

9 6 8·5 7

10·2 BD 9·6 70

2.12n@7r!F l·nO@9i'F

Fresh Water Fresh Water

55' 549' 549'

973' 2083' 3516'

972' 2082' 3516'

2 hours

C- 347

9.2 8

9·5 112

Mud Engr.

msh Water

rP/B'5 hours

549'

C -347

3516'

3516'

549'

2082'

2083'

2 hours

C - 347

55'

973'

971'

2 hours

C - 3017

9' 5 102 10 0 2 80 9·6 70

12X!to 551'

Mud Engr. Mud Engr.

9·2 8 9 6 8·5 7

a0/4 to T.O.

Fresh Water Fresh Water Fresh Water

Rmc

Rmf

Bit Size I

Depth Reached

2

Casing Driller

Truck No.

pH Fluid Los s

Mud Nature

Bottom Driller

Origin of Sample

Mud Resistivity BHT

Mud Resistivity

Opr. Rig Time

Density / Viscosity

Casing SizeCmt'd to

Surfacll

Surfacll

Cmt

50 sacks

130 sacks

QWb

55'

549'

To

55

551'

3516'

J:2!:H40

J 55

From

0'

55'

551'

ID..48

36

July 30, 1962

Oct 12, 1962

Oct. 16, 1962

Datll Spuddlld:

DatJz Drilling Stopplld:

Dote Rig off:

Holll Siu

Total Dllpth Driller 3516'E. Log 3516'

Recorded by Begley Begley Begley Begley Begley Begley

Witness Fletchllr Fletcher Fllltchllr Fletcher Fletcher Fletcher

Cemllnt Plugs From

0'

1860'

21/0'

To

17'1885'

2200'

Sacks

14

15

45LITHOLOGIC REFERENCE

loo 001 Conglom~rat~

I::: :1 Quartz sandstoMl

1-----1 Si/tston~

~ Sha/fl

m Lim~stonfl

~ Dolomit~

Well Hllad Fitting:

Dri IIlld by:

Logglld by.

Drilling Mllthod:

Cllmllntlld by.

Mud Logg ing by:

Woodside CLakes Entranc e) Oil Co. N. L.

Schlumberger Seaco Inc.

Rotary

Woodside (Lakes Entrance) Oil Co,N.L.

R. Hare & Associates

WELL SYMBOLS

10

[j Core, interval) number, and rec;overy

8a!Oalt

Basic vo!c-anics andtuffaCflous c/aystonfl

o mi' Micacflous

o col Ca/carflous

o gl G/auconitic

o py: Pyrific

o ch: Chrlrty

Dc, CarbonaCflOUS

o dol D%mitic

o tuft· Tuffacflous

@> Macro

A. Micro

fossils

~ Plant

o Spor~, pollqn

Lithology by: N. Meyczrs . D. RuthrdglZ and

K. Fletcher

Z Plugged interval

~ Casing shoe

I

lJ:I:a.Z~~tl)::>_..11-0<tU0:l-ll)

GElIiOLCANICS

DE S CRI P T IONLITHOLOGIC

Tuft and Aliluvium. Brown, finll grained with fra9ments dark grey tuff,dark grey basalt,brown chert .. trace Iil3ht grey, quartz sandstone.

SHALE

Trace present of sandstone, fine grained, hard. pyritic. and rare

trace of dk.gy. tuft, and calcite

dark 9Y, silty, hard, poorly fissile, with traces mica, carbonaceous

specks, sand grains and rare traces pyrite and glauconite_

Minor amounts present of siltstone med. gy.• fine grained.

argillaceous, with trace mica. carbonaceou5 material and sand grains.

MICROLOGohms m2/m

Micro inverse I~ (o

CALIPER

)

7 14 21 28 35 42 49 56 63 70 77

Hole DiomlZter in Inches;

714 9 10~ 14M 16 0 Micro normal 2"I--r~~_r~~~-~---------------------------

AO = 18'a"

RESISTIVITYohms mYm

90 180 270 360 450

o

I

o

o

RESISTlVITVohms m"m

v v bv vv v v v

INTERPRETEDLITHOLOGY 0 0

P AMz= 64/1------- ------~---

P 90 180 270 '360 4fO 0

-j 181-

Mill ivolts

SPONTANEOUS POTENTIAL

I

py

v .. v v v V1:::"...JL~v... bV v V

-I' V V'

LITHOLOGYOfo of cuttings

10 20 30 40

MUD GAS

DETECTION DEPTH

filet

8

z ~~~o ...J3o- a. 2I- '" ~-<~C>13iij~Q:I---------.r---~o ~ 0 Drill Stem Porosity

lJ lJ Test

6040

~

13~

fut per hour ~

DRILLING RATE

P 20

BIT TYPE!.

REMARi<S

"G,obeS2 C 17."

Core No.l indicates shale and siltstone are current bedCled

and contain muds'tone pellets, and a few tuff inclusions

I-SILTSTONE

Med.-gy' fine grained, slightly argilloceous with traces mica fine1 "

pyrite, carlbonacllous specks, and f inll angular quartz grains.

The siltstone is slightly calcareous in places, and in a few

instances contains traces of hard, pyr itic sandstonll,

calcite, and vein quartz.

Minor shales are present, similar to those in the overlying

unit

) Core No.2 ind icates that the siltstone is cur..ent beddlld

\Grange

INTERBEDDED SANDSTONE AND SILTSTONE

Sa n d s ton e: Lt. med. gy. and It. brn. fine to med. grainlld, hard,

lDiliceous, angular, dolomitic Mar the base

Si Its ton e: As in unit above, except at base where siltstone

varies to white,hard dolomitic and dk. gy.hard,micaceous,sHicllous,

Minor shales present,as in overlying unit.

I

iI ~

BASALT

Mild -dk.gy. v. fine grainlld with phenocrysts of feldspar andolivine. Ta Ic and chlorite are associated with slickensided

surfaces. Abundant vertical fractures in core No.4 et:

Minor sst. It. gy. fine grained hard in upper 20: and

basic volcanlics.lt. gy. with plagioclase. Laths in cryptocrystalline

ground ma!5S and dolomite, brown to It. grey, si Iiceous present

in basa I 401~

SHALE

1-.....L.----------<1--1--1--..--------I-+-++-f-I-------t-1300

v v 00

v v 0 0

v v I===fo 0 0

v v 1===1 0••

vvv v o./:::=::j 0 •

_._0_0_0 o-L--L-L-L

.-'.~..'~. . . . . ..

1--.+-----------t---I---I--+------+++-f-++-------1f- I 500

L

STOCKYARD MOUNTAIN No.1

PLATE 3SHEET 2

SPONTANEOUS POTENTIAL RESISTIVITYohms mrm

RESISTIVITYohms m'Ym

CALl PER MICROLOGohms m~m

uIa.z«~0:::::>~..J.... 0«uer....lI)

DE S CRI P T IONLITHOLOGICMicro inverse I~ (o

. 2"7'14 9 10~ 14M 16 .Q. ----~.:~~~~~~I-----------

7 14 21 28 35 42 49 56 63 70 77

o

o

o

O ~Mz ~~ _

P 90 180 270 360 450 0 90 180 270 360 450

INTERPRETED AO = 18'8" Hole DiamlZtlZr in Inches;LITHOLOGY t-0 -t....;;.0 -I

-1 18 f-Mill ivolts

LITHOLOGY0/0 of cutting5

10 20 30 40

MUD GAS

DETECTION DEPTH

feuPorosityDrill Stem

Test

z ~~~o ..J3oi= Q. .. 2c( cl:I a:<

:> C) 1fi ...------,.-----1UJ~Q:O~O

Uu

DRILLING RATEBIT TYPE&

REMAm<5

SANDSTONE AND SILTSTONE

SAN DSTONE

Sandstone as above, !but with numerous thin porous interbeds.Sandstone is more kacolinitic, softer.

Cart No.7 contains som~ small pmb!cs of quartz ond chef"t

SHALE

Dk.gy.- brown, micaceous, silty, orenacllous,blocky, tracn of

slickensides

SANDSTONE

Lt. gy.,- white, fine grained to very coarse grained, quartzos.e

sub - rounded to sub-angular, siliceous. Very slightly calcareous

and kaolinitic. Trace poor porosity nohd in core No.6

Minor amounts present of med. gy. - brn. fine grained subangular,

slightly argillaceous sandstones, Minor interbeds of shale prullnt

similar to overlying Bit rry Shale.

SANDSTONE

Lt. gy. - brn., varying to m~dium gy. near the base. Fine grained,

kaolinitic, argilJacllous, silicllous. Contains a feW chert and

quartz pebb I es

Minor amounts present of shale dk. brn., carbonaceous, silty

varying to dk. gy., arenaceous, silty, micaceous near the base.

Core No.8 indicates beds are flat lying

Sandstonll varies from It. gy., med gy. to brown and from fine to

coarse grained. It consists of sub angular quartz in siliceous

cement, and is variously very carbonacrous, very argilJaceous

tUffaceous or calcareous.

Siltstone is gy., vuy argilJaceous, corbonaceous & tuffaceous inplaces

SILTSTONEDk. br-no - black, micaceous I argillaceous, tUffaceous, with minor shalesdk.gy. siltY,micaceous,hard and sandston~ gy-brn, fl'nll-med. grained,.siliceous

SILTSTONE AND SHALE dk.brown.-black, micaceousSANDSTONE

White, tine. to m~grained,consists of well sorted angular qtz in siliceouscement with trace kaolin. .

BASiC VOLCANICS AND DOLOMITEBa 5 i c volcanics bUff,chertY,tuffaceous with feldspar crystals incryptocrystalline ground mass. 1

Do lom ite, white ,coarse, crystalline, seconda ry

SANDSTONE AND SILTSTONE

Sandston e: grey. finfl to medium grained, argillaceous, consisting ofpoorly sorted angul ar quartz ;n sil iceous cement. Calcareou"and dolomitic in places

Siltstonet dk. gy.to brown,argillaceous, V. slightly dolomiticBASIC VOLCANICS AND TUFFACEOUS CLAYSTONE .

White - It. gy., dolomitic , cherty, with feldspar kaolin andvolcanic ash '

SHALEVery carbonaceous, coaly in part, blocky, black.

BASIC VOLCANICS AND TUFFACEOUs CLAYSTONE

Lithology as in claystones 2700'- 2705~ Minor siltstones dk.gy

black, very argi lIaceous , tUffaceous and s h a I e black OJrbona~ous, ,

__1=0"_

---

"""••--L.....L....!.. • • ••.. .. .. ....

..~ .....

INTERBEDDED SANDSTONES,-SILTSTONES, CARBONACEOUs SHALES,BASIC VOLCANICS AND TUFFACEOUs CLAYSTONE

San d s ton e s are variously White, It.gv. dk.gy. and range from v. fineto coarse grained and partly conglomeratic. They consist of

generally subongular qt"z. in siliceous cement and may be orgillaceous,

feldspathic, tUffaceous, calcareous or dolomitic

si Its ton e s are med. to dk.gy" dk.greyish -brn., and may be

argillaceous, carbonaceous, or tuffaceous. Near the to p of thlZ

unit the s;iltstones a,re siliceously cemented.

o

Car b 0 n ace 0 u 5 S h a I e s are present as indicated and alsoin minor quantities elsewhere.

Minor amounts of b a 5 i c v 0 I can j c 5 and t u f f ace 0 u S

c I ay s ton e s, as IIn the overlying unit are also present.o

3035:""3140' Minor amounts of coal associated with interbeds of

black, very carbonaceous, silty shale

CONGLOMERATEPebbles and cobbles of quartzite, chert, sandstone, silts;tone, slate,schist, and volcanic rocks in siliceous sandstone matrix

8ASALCONGU1TE

.-- '>"

/

SANDSTONELt.gy. to pink, fine grained, v. siliceous. Minor shales,siltstones andclaystone s.

SILTSTONES, SANDSTONES AND SHALESSiltstones, red brn.,argilloceous, sa n d stone s as aboveand s h a I e red brn., silty, arenaceous, blocky.

SANDSTONE It. green and pink, fine to med. grained micaceous consisting offairly well sorted angular qtz. in siliceous cemint. '

Core No.13 indicates dips 10°-15°SANDSTONES, SILTSTONES AND SHALES

San d s ton e s It.. gy. v. fine grained, v. siliceous Si I ts ton e s: It.gy.,

sil iclZOus S h a I e s red gy., green, silty, blocky, hard dips 6° 10° in Core No.l4

------ --!

COMPOSITE WELL LOG

PLATE 4SHEET I

COMPANY. EXOIL CN.S.W.) PTY. LT D. and AUSTRALIAN OIL & GAS CORPORATION LIMITED

WE LL NUMBER KURRAJONG H El G HT 5 NO.1

PETROLEUM TENEMENT: P.P.L. No.2 STATE NEW SOUTH WALES 4-MILE SHEET: SYDNEY BASIN SYDN EY WELL STATUS ABANDONED

E L E C T R C L o G D A TA RADIOMETRIC LOG DATA

6

9132'

31'

Surface

GAMMA

Nov. 22, 1962

Fr. wtr. mud

20' and 9128'

0, D. of In strument - In.

Source Spac ing - In.

Le ngth of Mea suring Device

Logging Speed- Ft. Min.

Top & Bottom of Logged Interval

Flu id Leve I

TYPE OF LOG

Neutron Source Strength & Type

Time Constant - Secs.

Type of Fluid in Hole

Date

Total Depth - Driller

Run Number

Maximum Recorded Temperature

9132'

2164'

9130'

2164'

3

2338'

9129'

679 I'

Fr. Wtr.

I· 02 ail 1730 F

Nov. 2 I) 1962

9 8 / 42

9 / 8 cc/30 min.

2

6791'

2164'

2292'

2164'

4499'

6792'

67~ 2 I

Fr. V(tr.

I . 75 ~ 128u F

Sept. 29, 1962

9·7 I 39

9·5 / 6'5cc/30min

1650'

4760'

1

661'

642'

663'

2300'

22.92 '

Aug. 3, 1962

I '8 (6l 1320 F

10· I / 50

10 / 6·3 cc 130min

1502'

2

3253'

1955,

4755

672'

1

,3253

1955

I

2581

pH/FlUid Loss

Mud Resistivity

De nsit y7 Viscosity

Casing Schlumberger

Depth Reached

Mud Nature

Date

Bottom Driller

Mud Resist. BHT

RUN No

First Reading

Casing Driller

Last Reading

Interval Mea sured

9132 '

9130'

DrillerDepth:

E. LogTotal

LOCATION: Lot. 33· 31' 45"S.Long. ISO' 37' 15" E.

ELEVATION: Reference Pt. K. B. 1879',

Ground 186;)

Date Spudded: February 11, 1955

Date Drilling Suspended: August 2 , 1955

Date Drilling Resumed: July 23 , 1962

Date Drilling Stopped: November 21 , 1962

Date Rig Off: November 25) 1962

o 709

709 2175

Interval - Ft.To

2175 91328%

17'/2

12 '/4

OPEN HOLE RECORD

Begley

Bit SizeIn.

Interval - Ft.To

o 642

695 705

575 21649% .36

13% 48

CASING RECORD

Statistical Variation -In.

Sensitivity Referenc e

Recorded by

Run No. Size-In. Wt.- Lbs.

3 hrs.

Be g ley

C ore Lab.

SKW - 231

13%" - 9%"

Pit

231

4 hrs.

Begley

8 %" to TD.

3· 5 61 64 0 F

2 hrs

231

Begley

NA

NA

F low Line

8 %" to T D·

Truck No.

Bit Size I

Opr. Rig Time

2

R mc

Origin of Sample

Casing Size

Rmf

Recorded by

Cmt'd. to

389'

1862'

Cmt.

200 sx.

500 s x.

Depth

681'-705'

720'-2164'

Gr.

H-40

J -55

To

709'

2175'

9132'

Wt

48

36

o709'

21 75'

FromIn.

17 'Iz H

12 '/4"

8 %'

Casing

Hole Size

Witness Perry Perry Perry

C e ment Plug s E.!:2.!!!. To Sacks

At surface

525' 575'

2870' 2925'

4625' 4680'

7840' 7905'

,Caliper 3742- 642' (I run)

Velocity 9132'-2164'(1 run)

Temperature 1874'- 24' (I run)

Micro - Caliper 9127'- 2164'(2 runs)

OTHER BORE - HOLE LOGS

PyritiC

Micaceous

Carbonaceous

Cherty

Foraminifera

CalcareousDcal

Volcanic rocksb: Basalt Rh:Rhyolite

L IT H 0 LOG I C R E FER E N Cl::

o Ouartz sandstonli

E- ~ Silts tone

~ Shale

Igogl Conglomerate

III Cool

F:=:J Metamorphic rocks

@J MaCrO}Fossils

Q Plant

Formation test interval and no·

WELL SYMBOLS

Casing shoe

Core interval number and recovery

Plugged Interval

20

50

30

30

20

3 •Steel plate welded on top of 13 Is casing

Oil Drilling & Exploration Ltd.

Oil Drilling & Exp loration Ltd. (1955)

Schlumberger (1962)

Core Laboratories Inc.

Oil Drilling I Exploration Ltd.

Rotary

Well Head Fittings:

Drilled by:

Logged by:

Mud Log g ing by;

C eme nted by:

Drill i ng Met hod:

Drafting by: G E 0 D RAF TIN G S E RV ICE S

50

GAMMA RAY

U

IQ. Z« ::i!:a:t9 :J_ .J

I-- 0« uCl:IIII

200

FORMATION TESTS

and other

RESERVOIR ENGINEERING

DATARadiation intensity increases

~

o

500

RESiSTIVITY

ohms - m2/m

RESISTIVITY

ohms - m2/m

o 5000

o 10

o AM, - 16" 500

&-_-----------_.~o AM 2 = 64" 500~-------------_.=

>0t9wO.J.J

:;(0I-:I:WI0-

.J

>Q:W>ouwa:00

(J)

wa:ou


millivolts

(J)

t9:J.J

Z Q.

I 0 0I-t I-Z (J)Q. ~ «« Q.w lL. -o > t9 0

W Zo (J)

«u

ZIII 0«t91-

UOW:JI-::i!:Wo

>- ent9 g'0-';:;....J ::J

o u

I bI-~.J 0

10 20 30 40 50

IIIIII ~ DRILLING RATEW a:Q. « ( min/5 ft.)>- ::i!:I- W

a:

/

(J)

(J)

u

I-

«

z

w

n..

z

z

<t

w

CD

<ta:::

(f)

W

Y:

z

o

o

llJ

-

No ree.

Misruns

MisrunRec. 4' mud

...... . .... . .· ..... ..· ...'" .

11····...

100 -I--I--I---I---1f---+---1--l--I--l---I-----+---+--I---1~. '.,.;..'",;.,.'.,,;:j••I--I---l--I--+-+---+-+----I--+--t---I---I-----+---I--l--I--+-+---+-+----If-~?----_+------___I

.

:'O: .. :.'.~:.•.' i<':0:':-:.· '"....· ...200 +-I--I--I--1--+--+---+---1---+---1f....--l--I--I----I...:...:.,.o~.f....--I---+--f--l--I--+-+---+-+--+-+---1--+--f---+--f--l--+----+-+-----I-----cE-------t---------t-:0:': -:

: -:-: .!'.

.-

C OM POSITE WELL LOG

PLATE 4SHEET 2

KURRAJON G H EIGHTS NO.1 WELL

RESISTIVITY

ohms - mo/m~

lJl lJlW ~Q. a::>- ~I- ~

WI- a:d)

D RILL ING RATE

( mini 5 ft.)

10 20 30 40 50I I I I I

70 80 90 100 110

>- ~

C> g'O~..J :;,o uJ: '0I-~..J 0

ZlJl 0~ C> I-

Uo W:::> I~ W

o

J:I- ..Q. III

w~o

lJlC>:::>..J

Z Q.

Q 0 lJlI- Z Q.~ ~ > 0w C>o Z

lJl~

U

SPONTANEOUS POTENT IAL

millivolts

>a::w>ouwa::01

lJlWa::oU

2500' - soDa'

SHEET 2 OF '-+

>-o C>wO..J..J 0 10

:;( 0 0 AM, - 16" 500I- J:W I- 0 ~OOo _

..J ~ .2Qo AM z - 64" 500r'--------------:'.=..::.

-----'"

---

.::-

- <

-

RESISTIVITY

ohms- m 2/m

AO - 18' 8"50

500

o

GAMMA RAY

Radiation intensity increases

..200

FORMATION TESTS

and other


DATA

MisrunRec. 4' mud

Rec 10' mud

Rec. 5' mudMisrun

U

IQ.

« Zet ~

C> :::>- ..JI- 0~ Ua::l-ll)

u0... -::)

Ot/)a:::(!)

t/)

«ZWw-m

~~a:::«ZJ-

Cl)

wa:::::)

(1)

«w2:

~o(!)

It-

I--

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w

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U

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o

w

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PLATE 4SHEET 3

COMPOSITE WELL LOG

KURRAJONG H El GHTS NO.1 WE LL

SHEET 3 OF 4

U

Ia.Z«~0:::::>C) ...J

1-0«U0::l-ll)

200

GAMMA RAY FORMATION TESTS

and other

RESERVOIR ENG INEERING

DATARadiation intensity increases

o

RESISTIVITY

ohms m2 /m

RESISTIVITY

ohms m2 /m~

o C)

UI 0 0 10...J ...J F------------:;------~

« 0 ..IO'- A_M---..:...._-__16_K ---'S~0~0~--------_:___:__----.::..50~I- I 0 ", ... I... A0 - IS'S' 0UI I- t=- --JS"-")U:..Y.f"UIU'-- ....:S"-"-"t0o -

...J ~.----------- __- 2Qo AM1 = 64' 500~ ~..;:;.;:

(/)UI0::oU

~

a::UI>ouUIa::


millivolts

I ZI- .... 0 0a. bl I- Z (/)UI~ «« ~o > C) 0

UI Zo (/)

«u

Z(/)0«C) I-

o U:::> UI

~ I-UIo

DRILLING RATE

( min. / 5 ft.)

40 80 12.0 160 200I I I I I

2S0 320 360 400 440

lIlS

11) (/)

UI ~a. a::~ «I- :f

UII- a::ID

a..

o

a:

w

w

a:

w

a..

U z

«

w

a..

o

Cl::

w

w

~

w

0..

u

PLATE 4SHEET 4

COMPOSITE WELL LOG

KURRAJONG HEIGHTS NO.1 WELL

7500' - 9132'

SHEET 4 OF 4

o (j)

Z ~<X: 0

w

CL

w

o

u

Cl..

o

w

«

z

(J)

:::>

o

u

~ Z<X: ~er: ::>t9 ..J- 0I- U<X:er:I(j)

wO:::W

Ia::wCL<ru

Rec. 4800' mud]

200

G AM M A RAY FORMATION TESTS

and othe r


Radiation intensity increases DATA

o

50

500AO = 18' 8'

RESISTIVITY

ohms- mZ/m

o 500 0

RESISTIVITY

ohms - m2 /m

o 10

o A M I = 16 • 50 0

o 50------------------o AM! - 64' 500f."-- .-'-

>-o t9w 0~ ..J<X: 0I- IW Io

..J

>er:w>ouwer:00

(j)

WQ:

oU


milllvolts

(j)

t9::>--l

Z a..I 0I- ....a.. III I-W ~ <X:

o > t9

~ Z(j)

<X:U

z(j) 0<X:t9 -

I-U

o w::>~ I

Wo

>- III19 g-O ....--l :;o uI ....I- 0

~--l40 80 120 160 200I I I I I

280 320 360 400 440

DRILLING RATE

(min / 5 ft.)

00

(j) (j)

w ~a.. <X:>- ~I-

WI- er:I!l

1\H7\

9130 ~!3132

Rec 0

drilling operations in the sydney basin new south wales, … · commonwealth of australia...

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