Location map

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Location map
Acle
Southwold
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Regional Setting
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Hewett Play, reservoir and seal

• Play proven at Hewett and De Ruyter
• 70-140ft Hewett sands over prospect
• 400ft Bunter shale top seal

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Southwold Source presence and maturity
Example Namurian Source presence
Maturation modelling block 53/15
Oil generation Cretaceous Mid Tertiary
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Seismic line over prospect lead B
Southwold Central
SW
NE
Southwold North
Base Cretaceous
Base Bunter sand
Top Hewett
Top Zechstein
Top Rotliegendes
Hewett sands above Zechstein
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Southwold Top Hewett depth structure
Southwold North
Reydon
Southwold Central
Southwold Central has a crest at 4450ft ss with
closing contour at 4700ft ss. Southwold North
has closing contour at 4700ft ss and crest at
4270ft ss
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seismic coverage prospect volumes
The prospects have good seismic coverage. There
is significant upside to the play if Southwold
Central is successful
Southwold North P50 reserves 37mmbbls
Reydon P50 reserves 37mmbbls
Southwold Namurian P50 reserves 36mmbbls
Southwold Central P50 reserves 52mmbbls
Leads/Prospects Namurian and Dinantian Hewett
Sands
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Southwold Risk analysis
The Southwold prospect is a Mesozoic structure,
like De Ruyter. No well has tested a reliable
mesozoic structure in this part of the UK SNS.
Contact Swift Exploration for the post well
analysis of all the wells in the area
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Southwold volume and risk

• Charge Namurian source, supported by modelling
  and hydrocarbon evidence.
• Reservoir- Proven effective reservoir in
  surrounding wells and fields
• Seal- Overlying Bunter shale completely encases
  the closure
• Trap- very clearly imaged on excellent 2D
  seismic
• Overall- key risk is charge

Oil volumes are higher than the producing De
Ruyter field. We consider volumes in excess of
30mmbbls oil are likely to be commercial.
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Licence area Block 49/29d
North Davy field Rotliegendes, production via Davy
Acle Prospect
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Seismic lines- Acle
A clear structure in TWT is visible with a good
Bunter shale seal, no juxtaposition of Zechstein
with Bunter sand
Contact Swift Exploration to view prospect
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Instantaneous frequency seismic line- Acle
A Low frequency shadow below Rotliegendes
reservoir can be observed. This is an indication
of gas saturation
Contact Swift Exploration to view prospect
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Top Rotliegendes Depth
spill 8455ft low case
spill 8600ft high case ,
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Acle volume and risk

• Charge surrounding structures are charged
• Reservoir- Proven effective reservoir in
  surrounding fields
• Seal- Overlying Zechstein salt and Bunter shale
  completely encase the closure
• Trap- small but very clearly imaged on 3D
  seismic
• Overall- Low risk for a minimal closure

Acle is 4 kms west of the subsea manifold on Davy
North. Gas from Acle could be produced from a
single production well via a sub-sea template and
tied back into the Davy North pipeline. 25BCF of
recoverable reserves at Davy East have proved
commercial.
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• Acle
• Block 49/29d
• 50 Swift Exploration
• 50 Stelinmatvic Industries
• Seismic coverage-3D Western Geco spec
• Prospect is ready for drilling.
• 36-106 Bcf gas reserves
• Well to 8600ft to the Rotliegendes, 30-35 days to
  complete
• Well to be drilled as a production well.
• Potential for production within a year

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• Southwold
• Blocks 53/14a and 15a
• 100 Swift Exploration
• Excellent seismic coverage (2006 2D survey 250m
  line spacing)
• 50mmbbls of oil reserves with and additional
  150mmbls in adjacent prospects
• Prospect is ready for drilling.
• Well to 5000ft (1525m) into the Rotliegendes
  15-20 days to complete.

Contact- info_at_swiftexploration.com