SAPEX

1

• SAPEX

Arckaringa Basin Technical report
2
SAPEX Permits
Figure 1.1
PELA 117
SAPEX Arckaringa Basin Acreage
PELA 121
PELA 122
PELA 118
PELA 123
PELA 119
PELA 124
SAPEX North St Vincent Basin Acreage
PELA 120
3
Basin Location
Figure 2.1
4
Structural Elements and Coal Fields
Figure 2.2
SAPEX ELs
EL 3325 (Wintinna East)
EL 3326 (Weedina)
5
Arckaringa Basin Gravity Data
Figure 2.3
6
Arckaringa Basin Aeromagnetic Data
Figure 2.4
7
Native Title
8
Stratigraphic Table
Figure 2.5
9
GR
DT
10
Oil Shows
Figure 2.6
Composite map top Permian Depth
Oil Show
11
Typical Boorthanna Trough Seismic
Figure 2.7
C
Mt Toondina
Stuart range
Boorthanna
Lower Boorthanna
Base Boorthanna
Diapir
Diapir
Diapir
Diapir
12
Source Maturity Data
Figure 2.8
Potential Source
Permian

• Boorthanna Fm Glacial to possible marine shales
  (Lake Phillipson 1)
• Stuart Range marine transgression from the
  south over Boorthanna Fm. Shoreline sands at
  Cootanoorinna 1. Residual oil at SR12 in south
• Mt Toondina Formation fluvial / lacustrine,
  includes coal deposits

Pre Permian
0.5
0.8

• Very thick Devonian / Cambrian section
  particularly in Boorthanna trough region
  minimal borehole intersections through section

Maturity

• Stuart Range and Boorthanna Fm are marginally
  mature to mature in the deep intersections at
  Cootanoorinna 1, Boorthanna 1 and Weedina 1 Both
  Formations are mapped on seismic to be
  significantly deeper in the central and southern
  Boorthanna Trough
• Mt Toondina has thickest section of Stuart Range
  shales (490 m)
• Oil maturity (0.6 Ro max) reached at about 700m
  depth in Boorthanna trough implies high heat
  flow or uplift

13
Composite map top Permian Depth
Figure 2.9
Identified Coal deposits (near top Permian)
Boorthanna Trough
Peake and Denison Ranges
Seismic data establishes a more detailed view in
northern Boorthanna trough
Very sparse well and borehole data provides
control in areas with no recent seismic.
Magnetic low deep basement
Based on previous mapping
14
Possible Hydrocarbon Migration Paths
Figure 2.10
15
Prospects and Leads
Figure 2.11
16
Prospects and Leads Inventory
Prospects Leads Inventory
Figure 2.12
17
PELA 117 Composite map top Permian Depth
Figure 3.1
No data
Top Permian up to 250 m poorly controlled
mostly well and coal borehole data Permian
isopach 400m in the west to 700 m in southeast
very poorly controlled
Wintinna East coal field
Wintinna coal field
Murloocoppie coal field
Depth is from surface in m
Coal / mineral borehole
18
PELA 117 Leads Map
Figure 3.2
85-YQT
85 XQE
85-YQS
19
PELA 117 Boorthanna Fm TWT
Figure 3.3
20
PELA 117 Leads 1 and 3
85-YQT
Figure 3.4
C
Mt Toondina
Stuart Range
Boorthanna
Base Boorthanna
21
PELA 117 Base Boorthanna TWT
Figure 3.5
22
PELA 117 - Lead 2
85-YQS
Figure 3.6
Mt Toondina
C
Stuart range
Boorthanna
Lower Boorthanna
Base Boorthanna
Offset Toondina 1
23
PELA 117 Detailed mapping
Figure 3.8
Lead 1
Lead 2a
Lead 2a
Lead 2
Lead 2
Lead 3
Recent mapping with possible seismic / drilling
24
PELA 117 - Lead 2a
85-YQW
Figure 3.7
C
Mt Toondina
Stuart Range
Boorthanna
Base Boorthanna
25
PELA 118 Composite map top Permian Depth
Figure 4.1
Top Permian up to 150 m very poorly controlled
2 wells and some coal borehole data Permian
isopach 400m in the west to 470 m in southeast
very poorly controlled (4 5 points)
Possible thick Permian
400 m Permian
474 m Permian
Stuart range 3
Depth is from surface in m
26
Karkaro 1 Composite Log
Figure 4.2
72 m
Top Permian thin coals
Carbonaceous shale
Mt Toondina Fm 233 m
Green gray claystone 100 m - Stuart Range
Formation ?
Boorthanna Fm ? 67 m
Granite basement 472m
27
PELA 119 Composite map top Permian Depth
Figure 5.1
Thick Permian 907m at Lake Phillipson Bore 1
Penrhyn
Lake Phillipson
Depth is from surface in m
28
Lake Phillipson Bore
Figure 5.2
29
PELA 121 Composite map top Permian Depth
Figure 6.1
Wintinna East
Muloocoppie
Wintinna
Westfield
Weedina
Depth is from surface in m
30
PELA 121 Boorthanna Fm TWT
Figure 6.2
31
PELA 121 Lower Boorthanna Fm TWT
Figure 6.3
32
PELA 121 Mt Toondina Fm TWT
Figure 6.4
33
PELA 121 Base Boorthanna TWT
Figure 6.5
34
PELA 121 Hanns Knob area Boorthanna TWT
Figure 6.6
The Boorthanna Formation is thin to absent over
the crest of Lead 7. A well could target the
northern flank, crest or southern flank
Intra Boorthanna closure approximately 12 sq km
Boorthanna thin to absent
Lead 7 top Boorthanna approximately 12 sq km
35
PELA 121 - Lead 7
84-XFA
Figure 6.7
W
E
LEAD PELA-121-7
Stuart Range
Boorthanna
Base Boorthanna
36
PELA 121 - Lead 7
85-YRK
Figure 6.8
N
S
Hanns Knob 1
LEAD PELA-121-7
Cadna-Owie
Mt Toondina
Stuart Range
Boorthanna
L Boorthanna
Base Boorthanna
37
PELA 121 - Lead 7
82-RAC
Figure 6.9
W
E
LEAD PELA-121-7
Mt Toondina
L Boorthanna
Stuart Range
Base Boorthanna
Boorthanna
38
PELA 121 Leads -north
Figure 6.10
85-YQY
85-YQZ
85-XQD
85-YRC
84-XFE
85-XQE
39
PELA 121 - Lead 1 and10
85-YQY
Figure 6.11
W
E
C
Mt Toondina
Stuart range
Boorthanna
Lower Boorthanna
Base Boorthanna
40
PELA 121 - Lead 2
85-YQZ
Figure 6.12
W
E
C
Mt Toondina
Stuart range
Boorthanna
Base Boorthanna
41
PELA 121 - Lead 3
85-YQD
Figure 6.13
W
E
C
Mt Toondina
Stuart range
Boorthanna
Lower Boorthanna
Mt Toondina feature
Base Boorthanna
42
PELA 121 - Lead 4 and 5
85-YRC
Figure 6.14
NE
SW
C
Mt Toondina
Stuart range
Boorthanna
Base Boorthanna
43
PELA 121 - Lead 12 and 13
85-YQE
Figure 6.15
NW
SE
C
Mt Toondina
Stuart range
Boorthanna
Lower Boorthanna
Base Boorthanna
44
PELA 121 - Lead 17 and 16
84-XFE
Figure 6.16
W
E
C
Mt Toondina
Stuart range
Lower Boorthanna
Boorthanna
Base Boorthanna
Diapir
Diapir
Diapir
45
PELA 121 Leads -South
Figure 6.17
85-YRK
85-YRK
82-RAY
82-RAC
85-XFA
85-YRL
84-XEX
84-XET
46
PELA 121 - Lead 6
Figure 6.18
85-YRL
NW
SE
Mt Toondina
Boorthanna
Lower Boorthanna
Base Boorthanna
47
PELA 121 - Lead 14 and 8
82-RAY
Figure 6.19
W
E
C
Mt Toondina
Stuart Range
Boorthanna
Base Boorthanna
48
PELA 121 - Lead 18 and 15
84-XEX
Figure 6.20
W
E
C
Mt Toondina
Boorthanna
Base Boorthanna
Diapir
49
PELA 121 - Lead15 detail mapping
84-XEX
Figure 6.21
Basement
Boorthnna
50
PELA 121 - Lead15 detail mapping
84-XEX
Figure 6.22
Cootanoorinna Fm
Boorthanna - Basement
51
PELA 121 - Lead15 seismic
84-XEX
Figure 6.23
C
Mt Toondina
Stuart Range
Boorthanna
Boorthanna 2
Cootanoorinna
Base Boorthanna
52
PELA 121 - Lead 9
Figure 6.24
84-XET
W
E
C
Mt Toondina
Boorthanna
Base Boorthanna
53
PELA 122 Composite map top Permian Depth
Figure 7.1
Weedina
Depth is from surface in m
54
PELA 122 Base Boorthanna TWT
Figure 7.2
84-XES
55
PELA 122 - Lead 1
84-XES
Figure 7.3
Mt Toondina
Stuart range
Boorthanna
Base Boorthanna
56
PELA 123 Composite map top Permian Depth
Figure 8.1
Analysis shows low concentration of residual oil
in Stuart Range Fm (102 and 112m)
Depth is from surface in m
57
PELA 123 Boorthanna Fm TWT
Figure 8.2
85-YRR
58
PELA 123 - Lead 1
85-YRR
Figure 8.3
Near Boorthanna 1
Mt Toondina
Stuart range
Boorthanna
Base Boorthanna
59
PELA 124 Composite map top Permian Depth
Figure 9.1
Lake Phillipson
Depth is from surface in m
60
PELA 120
Figure 10.1