hoop high hopes and challenges - spe workshop2 | omv (norge) as, march 11, 2015 annual spe workshop...
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Hoop High – Hopes and Challenges
Bernhard Krainer | OMV (Norge) AS
2 | OMV (Norge) AS, March 11, 2015
Annual SPE Workshop in Arctic Norway
The Workshop focuses on technical and operational challenges in a cost effective perspective for the arctic region within reservoir drainage strategy, reservoir management, drilling & well, subsea and hardware.
3 | OMV (Norge) AS, March 11, 2015
Content
Introduction - OMV in Norway
Wisting Discovery General
Challenges
Reservoir Challenges
Facilities Requirements
Drilling in Shallow Reservoir
Summary
Location and weather
Stakeholders
4 | OMV (Norge) AS, March 11, 2015
Build up of significant asset portfolio since 2007
Exploration Appraisal Selection / FEED Production Execution
Zidane Gullfaks Edvard Grieg,
Production ~50 kboe/d by end 2014 up to 80kboe/d in 2017
OMV
position
36 Licences
9 Operated Zidane
Edvard Grieg
Aasta Hansteen
Polarled
Ivar Aasen
Gullfaks
Gudrun
Wisting
Luno II
Shetland/Lista
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Skijumping: Main Sponsor of Norwegian National Team
6 | OMV (Norge) AS, March 11, 2015
Hanssen
Wisting
OMV: Barents Sea Portfolio & PL 537
11 Licences in Barents
2 operated
PL 537 awarded Q2/2009
3D shot in 2009
Prospect defined 2010
2 wells in Q3/Q4 2013
1 well in Q2 2014
License extension to
May 15, 2016
Appraisal Programme
2015: Drill Bjaaland
2016: Plans for up to
two additional wells
HOOP HIGH
7 | OMV (Norge) AS, March 11, 2015
Wisting consist of 5 segments:
Wisting Central
• Drilled 2013
Wisting Central West
Wisting Central South
Hanssen
• Drilled and tested 2014
Hassel
Bjaaland
• Planned for Q2/2014
Total Wisting Resources
in PL 537
PL 537 Wisting : Structure & Resources
Stø + Fruholmen P90 P50 P10
MMSTB MMSTB MMSTB
Recoverable Res. 200 300 500
8 | OMV (Norge) AS, March 11, 2015
Well Objectives:
Test Jurassic prospectivity (Stø
Formation)
Well Results:
Very shallow reservoir – only 250
below seabed
Upper part homogeneous with good
properties,
Lower part heterogeneous; but still
sand rich
Well with 50-60m oil column;
Central segment 60-160 mmbo
recoverable oil
Extensive data acquisition and
sampling , no DST
Secondary Target:
Snadd Formation, tight, shows only
7324/8-1 Wisting Central Well Summary- Discovery Well – Sept 2013
Wisting Central
AI
9 | OMV (Norge) AS, March 11, 2015
Content
Introduction - OMV in Norway
Wisting Discovery General
Challenges
Reservoir Challenges
Facilities Requirements
Drilling in Shallow Reservoir
Summary
Location and weather
Stakeholders
10 | OMV (Norge) AS, March 11, 2015
Wisting has some unique conditions
Shallow reservoir
250m below seabed
Reservoir conditions
Low Pressure 70 bars
Low Temperature 16°C
No comparable case studies
Other Realgrunnen prospects/leads
on Hoop High will – if successful - face
equivalent challenges
Reservoir Challenges
11 | OMV (Norge) AS, March 11, 2015
Drive Mechanisms
How strong is aquifer ?
Current reference studies includes:
Water injection as drive mechanism
Horizontal production wells
Subsea multi-phase pumps
Recovery Factor
A big uncertainty
Ranges from low 20’s to 50+ %
? Contribution from heterogeneous part
Major influence on economics
Reservoir – how much can we get out?
45 55
80
20
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Well Design and Planning
Well design limited by kill simulation
results
Cap rock integrity & barrier placement
BHA design (high dog legs, limited
weight on bit, high surface RPM)
Uncertainties in building behavior
Hole cleaning in low pressure /high
permeable sandstone reservoir
Challenging completion design
Horizontal Wells: None drilled offshore at this depth
Horizontals would be essential for development concept - less
wells and higher recovery
Prove feasibility of horizontal wells for Concept Selection
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Subsea
Wells distributed over a large area
Not much pressure to “play with”
Pressure boosting required to keep flow rates high and back
pressure on wells low.
Trade-off between CAPEX (pre-installed equipment and piping) and
production rates
Facility Challenges – Sub-Sea
Work in progress:
All boosting mechanisms (sub-sea and down-hole)
Experience transfer (partners, leading vendors ) for “sub-sea
factory” equipment
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Hydrates:
Early field life - Low temperatures, low pressures. Outside hydrate
zone.
Late field life - higher water cut, higher density - pressurizes fluid into
the hydrate zone.
Wax:
Studies ongoing to determine impact
Round trip pigging - adds to sub-sea CAPEX
Solutions under review:
Hot oil circulation, direct electrical heating, chemicals
Facility Challenges – Flow Assurance
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HOOP High is far off existing Infrastructure - not like in North Sea –
Stand alone solution needed
Potential oil development at Wisting, but limited associated gas
GOR 37-50 Sm3/Sm3
Need to maintain oil rate for sufficient gas to power generation
No opportunities to buy/import from a near-by gas export line
Too far for Power from Shore
Solutions under review:
Re-inject excess gas in early life, produce back in late life (needs
sub-surface studies) or dual fuel solutions
Facilities Challenge - Power supply
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Floater concept – 400 water depth,
What type of floater
Ship, Spar, Buoy-shaped?
How big – capacity, storage needs
Wisting only
Hub concept for area
Overall design concept
Winterization
low maintenace
new standards?
Export – shuttle tanker (Veidnes) or pipeline
Facility Challenge: Installation Design
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Remote location
Northernmost discovery ever in Norway
(310 km from Hammerfest)
Low density of resources in the area
Medevac to Tromsø, up to 4 hours or more
Telemedicine solution plus two nurses on board
Long periods of dense fog expected
Evacuation solution independent of Helicopters
Stand by vessel with capability to operate in harsh
weather is the primary resourse
Location Challenge - HSSE
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Long-term observations & detailed data for Hoop Area are sparse
PL537: Metocean buoy installed at Wisting
Collaborating with other Barents Sea operators and relevant
Authorities to expand knowledge of Barents Sea operating
conditions
Polar lows, fog in summer, prevailing wind directions etc.
Barents Sea in general more “friendly” met-ocean conditions than
Norskehavet
Collaboration to better understand the marginal ice zone eco-system
Location Challenge – Weather & Environment
19 | OMV (Norge) AS, March 11, 2015
Location Challenge – Oil Spill
Extensive simulations of diverse spill scenarios based on actual oil and reservoir properties
Strict oil spill recovery requirements
Spill detection within one hour
SECurus detection system (radar plus IR)
NOFO vessel at location
Full barrier I and II in place within 24 hrs
DST was seen by satellite...
Formal collaboration agreement with main Barents sea operators on a wide range of arctic HSSE issues in place now.
Barents Sea Exploration Collaboration (“BaSEC”) established on March 9, 2015
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Location Challenge – Where is the Ice?
Average sea ice concentration map for December Average sea ice concentration map for January
HOOP HIGH
HOOP HIGH
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Local Communities & Stakeholders
Fishing & Tourism
NGO’s & Climate Change Discussion
Non-Technical Challenges
Image taken from Transocean Barents, May 31, 2014
22 | OMV (Norge) AS, March 11, 2015
Resources:
Wisting – has proven up material subsurface potential – a shallow
and unique reservoir in Jurassic Realgrunnen
Other plays – Snadd & Kobbe (Triassic) – attempted but not
successfull to date
Development challenges
Primarily driven by resource volumes & shallow reservoir
Secondarily by limited infrastructure and logistics for location
Commercial challenges (oil price ..) need to be resolved
Way Forward
Confirmation of additional potential in the future (23rd Round fwd.)
will provide for development of hubs & regional infrastructure
OMV committed to mature Wisting and establish a PDO in 2019
Hoop High Challenges – Conclusions
23 | OMV (Norge) AS, March 11, 2015
Content
Introduction - OMV in Norway
Wisting Discovery General
Challenges
Reservoir Challenges
Facilities Requirements
Drilling in Shallow Reservoir
Summary
Location and weather
Stakeholders
24 | OMV (Norge) AS, March 11, 2015
Thank you!
Bernhard Krainer | OMV Norge AS
Bernhard.krainer@omv.com
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