arctic oil and development study - field selection

8/13/2019 Arctic Oil and Development study - Field selection

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Johan Castberg Field, Barents Sea,

6 th February 2014



Company Introduction

Deratanapoka Winitpol MSc. Offshore Floating System

u ang c. s ore oa ng ys em

Tom Ogbu MSc. Subsea EngineeringFranck Farel Boumba Sc. Subsea Engineering

Mohd Zaim Zainal Abddin MSc. Subsea Engineering

Roderick Macneil Sc. Subsea Engineering



Presentation Outline

• Field location

•

• Oil and gas exploration & production

•

• Engineering infrastructure

e eve opmen p an

• Area of interest – Design & Analysis



Field selection

• Challenging environment – Encourages innovation

• Available data Norwe ian Petroleum Directorate

• High potential of undiscovered hydrocarbon

• Geo olitical issues

• Government support

• O en market



Field Location



Field Location

• 100 km North ofSnohvit field

• 150 km North of Goliat

field • 240 km to Melkoya

Island, Hammerfest

rugar an av s s7km away from each

other



Field terrain

• Steeply sloping with

,

• Thick sandstone formation

ou e at spot at ot

fields; possibly oil-water,

gas-water, or gas-oil

• Rock formation; middle

Jurassic - late Triassic



Skrugard field

•Discovered in April 2011

• Discovery well bore 7220/8-1

• Water depth 388 m

• Hydrocarbon approximately1740 m below sea level

• Reserve volume estimate, 400-

m on arre s o o(Johan Castberg)



Havis field

• Discovery well bore 7220/7-1

ater ept m

•Hydrocarbon approximately



Current progress

•Production license, PL 532

• Operators: Statoil(50%), ENI(30%), and Petoro(20%)

• Pipeline export ashore by Petoro and drilling operates by

ENI• Norway and Russia has signed an agreement on gray

territory



Environmental challenges

• Water depth >100m considered deep water in Arctic region

•

• Logistic (labor and material)

• Ex ensive su l chain

• Short window for construction period

• Ecolo s stem rotection from oil s ill, difficult to clean

oil + ice



Technology challenges

• Marine operation in icecondition; ice capable vessel

• Subsea pipeline installation,

avoid ice-gouging

• Iceberg management/monitoring

• Exploration drilling

• Station keeping

• Oil spill

• Disconnection and reconnection

within short window



Technology challenges

•Development drilling• Mooring capacity

• Hydrocarbon export challenges

•Reliability, repair and maintenance in dynamic ice will be difficult

• Icebreaking tanker



Oil & Gas exploration in Barents Sea

•

• Over 100 wells were drilled

• Goliat

• Johan

Castberg



Undiscovered resources

• Proven oil and gas:350 billion m3 of

gas and 210 million

m3 of liquid

million m3 of oil

equivalents



Current status in Barent Seas

no v e ;

production wells andone co2 well

• Goliat developing phase

• completed

• Production well plan

• Use water injection for production

• Export via Snohvit pipeline to MelkoyaIsland



Current Status around Johan Castberg

• Gas discoveries in Nunatak and Iskrystall

• Skaval on progress,

appraisal drilling

• Kramsno next field

•

2014



Conceptual study for Johan Castberg

• Sevan Marine study FPU

• Sloped structure better for icedrift

• Skru ard and Havis sharessame infrastructure

• 14 production wells

u sman rc c



Engineering infrastructure

ns ore erm na

(Existing)

• ,

Hammerfest

• 240km from Johan

Castberg

• Transport scheme:

Ships

• Capacity: 70 LNG/yr,

• 10 LPG/yr




• Onshore Terminal

(Planned)

e nes, nnmar

• 280km from Johan

• Transport scheme :

Shi s

• Capacity: 50-100

tankers/yr




• Future plan

• Increase process and export

• LNG Train II

• Current status: On-hold

• Melkoya to Asgard pipeline

• Expected a length of

m• Plan to be commissioned

in 2021



Field development plan

• Explanation of the commitments in term of; (for

• Facilities

• Provision for 3rd party access

•




• Floating production unit with subsea system

• Start up 2018

•Transport by 280 km pipeline to oil storage facility(two

• Pipeline to quay for tanker transportation

- an er es ma es o v s e new u erm na




•Phase I• Construction of production facility

Construction of oil terminal, Finnmark

• Pipe laying , trenching to avoid ice gouging

• Phase II

• Field expansion, tie in subsea installation between Skrugard andHavis

•

• Preparation for further field expansion, 4 new discovered field nearJohan Castberg



Area of interest – Design & Analysis

•

• Floater response due to disconnectable mooring system



Reasons

•Ice influence on the Floater dynamic behavior, depends on:• Ice thickness

• Relative speed (with reference to the Floater)

•A cable-moored Floater subjected to a moving ice flow or ice

e ru e, w cause:

• undesirable ice load undesirable motions



…

Q & A

arctic oil and development study - field selection

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