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History of resource classifications
Fundamental purpose of resource classification
Capital value chain at work in the North Sea
How the UNFC can facilitate development
2
Purpose of Resource Classification
4
External user
External Influencers
Internal users
Governance and Assurance
Internal StakeholdersInternal preparers
9
Resource progression
BP North Sea portfolio – Resource ‘tube’
Technical Limit52+% RF31% RF 42% RF38% RF
ReservesOnline
NewActivityFunded
Planned Options
Prod
uced
• Optimising base production
• New infill drilling
• Enhanced oil recovery
• Extending facility life
36% RF
Life of Field Depletion Plan
Options with technical barriers
10
Integrating subsurface description with operational activity – depletion planning
• Describing the habitat of the remaining hydrocarbon
− Technical limit seismic imaging
− Forensic reservoir description
− Accurate description of historical drainage & sweep
• Appropriate recovery mechanisms for later field life
− Modifying pore-scale process through EOR e.g. WAG, polymer
− Depressurisation (blow-down)
• Ensuring the facilities are fit-for-purpose and have appropriate life
− Increased water & gas handling; changing fluid chemistries (H2S)
• An integrated depletion plan to optimise infill drilling, wellwork & effective reservoir management
12
Magnus pushes recovery factor 60%+
• Very successful initial waterflood development recovered initial sanction volumes
• Subsequent phases of development will increase recovery to 50-65%
− Subsea water injection added to debottleneck water injection well constraint
− WAG EOR scheme using stranded gas from WoS fields involved new import gas pipeline, additional compressor and recompletion of injection wells
− Platform slot constraint reduced by adding 4 new slots with splitter technology to side of platform providing 8 new wells
− Field life extension from 2008 to 2030 through ongoing CAPEX on facilities upgrades
• Enabled by substantial jacket & platform drilling package to reach field extents
• Full field seismic OBC coverage just been acquired (August 2011); 4D seismic for WAG surveillance
13
Magnus Development phases
• 7 subsea & 15 platform wells
•MSM only WF development
• LKCF development
• Increase off-take to 140mbd
• Revised petrophysical interpretation
• Infill drilling to utilise 20 slots
• plant PW de-bottlenecking
• 20 additional wells
• Subsea injectors (SWIFT)
• South Magnus subsea tie-back
• Miscible WAG EOR scheme for MSM and LKCF – brownfield mods
•8 new platform slots
• North West Magnus satellite development from platform
• Phase I and Phase II infill drilling programmes
• Options for further WAG patterns and Extended EOR scheme to progress remaining CR volumes
Magnus Full Field Recovery Factor
30% 40% 50% 60% 70%
500
600
700
800
900
1000
1100
1982
- Init
ial S
ancti
on 1986
1987
1991
1994
1995
2000
2005
2010
Proved
2011
Dep
letion
Plan
Mag
nus
Fiel
d R
ecov
erab
le o
il (m
mst
b)
Current Recovery of 820mmstb
Produced Infill Ph2 Max EOR & BlowdownBase Infill Ph3 Left in ground
Evolution of Magnus Field Production Profiles
0
20
40
60
80
100
120
140
160
1983 1985 1987 1989 1991 1993 1995 1997 1999 2001 2003 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023 2025 2027 2029 2031 2033 2035
Mag
nus
Hub
Oil
Prod
uctio
n R
ate
(mst
bd)
2011 Depletion Plan2010 Proved20052000199519941991198719861982 - Initial SanctionActual
(Historical profiles - Annex B revisions)
14
Improving recovery factors in the North Sea
• Describing the habitat of the remaining hydrocarbon
− Technical limit seismic imaging
− Forensic reservoir description
− Accurate description of historical drainage & sweep
• Appropriate recovery mechanisms for later field life
− Modifying pore-scale process through EOR e.g. WAG, polymer
− Depressurisation (blow-down)
• Ensuring the facilities are fit-for-purpose and have appropriate life
− Increased water & gas handling; changing fluid chemistries (H2S)
• An integrated depletion plan to optimise infill drilling, wellwork & effective reservoir management
Sustainable and Efficient Development
− Long sighted policies for the global markets
− Government resources management for security and efficiency
− Industry processes to develop new technologies and efficient project management
− Cost effective allocation of financial resources
15
• Securing affordable and sustainable energy requires a common standard for developing: