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    Aasta Hansteen Info-01

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    Panneer Selvam Easwaran
    The document discusses the development of the Aasta Hansteen gas field located in the Norwegian Sea. It describes the investment decision framework used by Statoil to evaluate projects. For the Aasta Hansteen field, a spar platform with condensate storage was selected as the development concept. The spar will be the world's largest and first used on the Norwegian Continental Shelf. A pipeline called Polarled will be used to transport the gas from Aasta Hansteen to an onshore receiving terminal. The economic analysis considers not just the value to project owners but also impacts on the broader gas transportation system.

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    © All Rights Reserved
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    Aasta Hansteen Info-01

    Uploaded by

    Panneer Selvam Easwaran
    125 views37 pages
    The document discusses the development of the Aasta Hansteen gas field located in the Norwegian Sea. It describes the investment decision framework used by Statoil to evaluate projects. For the Aasta Hansteen field, a spar platform with condensate storage was selected as the development concept. The spar will be the world's largest and first used on the Norwegian Continental Shelf. A pipeline called Polarled will be used to transport the gas from Aasta Hansteen to an onshore receiving terminal. The economic analysis considers not just the value to project owners but also impacts on the broader gas transportation system.

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    The document discusses the development of the Aasta Hansteen gas field located in the Norwegian Sea. It describes the investment decision framework used by Statoil to evaluate projects. For the Aasta Hansteen field, a spar platform with condensate storage was selected as the development concept. The spar will be the world's largest and first used on the Norwegian Continental Shelf. A pipeline called Polarled will be used to transport the gas from Aasta Hansteen to an onshore receiving terminal. The economic analysis considers not just the value to project owners but also impacts on the broader gas transportation system.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    125 views37 pages

    Aasta Hansteen Info-01

    Uploaded by

    Panneer Selvam Easwaran
    The document discusses the development of the Aasta Hansteen gas field located in the Norwegian Sea. It describes the investment decision framework used by Statoil to evaluate projects. For the Aasta Hansteen field, a spar platform with condensate storage was selected as the development concept. The spar will be the world's largest and first used on the Norwegian Continental Shelf. A pipeline called Polarled will be used to transport the gas from Aasta Hansteen to an onshore receiving terminal. The economic analysis considers not just the value to project owners but also impacts on the broader gas transportation system.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 37

    Gas Field Development

    Torolf Christensen, Statoil, October 16, 2013


    Development and Production Norway, Field Development North

    Gas Field Development - Contents


    Lecture 1

    Lecture 2

    Opening a new area

    Economic analysis model in Statoil

    Investment decision framework in


    Statoil

    The gas transportation system

    The Aasta Hansteen development


    concept

    The gas infrastructure processes


    The Polarled development concept
    Summing up

    Concept screening and selection


    Aasta Hansteen

    Aasta Hansteen opening a new area


    Aasta
    Hansteen
    Norwegian
    Sea

    Key Area Objectives

    Aasta
    Hansteen

    Heidrun
    Skarv
    Norne

    Opening up a new area with new infrastructure


    gives Statoil a key position in the region

    Considered as a promising area

    Development supports Statoils production


    ambition from 2017 and onwards

    Maintain and extend options for further


    developments

    Resulting effects

    sgard

    Njord
    Linnorm

    Ormen Lange

    Develop competence and experience in


    harsh and deep water environment
    Create local spin-off effects in Northern
    Norway
    Contribute to develop the industry in the
    region

    Aasta Hansteen Reservoir structures

    Investment decision framework in Statoil

    What is the capital value process?


    The model for investment decisions - a risk based decision model to mature
    large projects through decision gates
    DG0

    DG1

    Business
    Identification

    Business
    planning

    Acquisitions /farm-ins/mergers
    Screening
    business
    opportunities

    DGA

    Bid
    preparations

    DGB

    Concession/
    Negotiations

    DGC

    DG2

    Concept
    planning

    DG3

    Definition

    DG4

    Execution

    Operations

    Project development
    DG0 Approval to start business planning
    Business planning phase: establishes whether a business
    opportunity is economically, technically, operationally and
    organizationally feasible.
    DG1 Approval to start concept planning
    Concept planning phase: identify alternative concepts,
    select a viable concept, define and document the selected
    concept and develop design basis for approval at DG2.

    DG2 Project pre-sanction start definition


    Definition phase: further mature, define and
    document the business case based on the selected
    concept for project sanction.
    DG3 Investment decision start execution
    Execution phase: realizes the business case.
    DG4 Decision to hand over to start operation

    Processes between DGs

    Decisions at increasing maturity level: The Decision Gates

    Business case and work alignment: Stakeholder Start-up meeting (SSUM)

    Follow up business case assumptions and context, risk and stakeholder management, and
    strategic change management: Steering Committee

    Quality Assurance Assistance (QAA)

    Independent technical and commercial review at decision milestones: Investment Arena


    review.

    The Aasta Hansteen development concept

    Aasta Hansteen development concept


    Spar-platform with condensate storage
    Process capacity 23 MSm3/day
    Steel catenary risers
    Partners:
    Statoil (operator) 75%
    OMV15%
    ConocoPhillips 10%

    Polyester mooring

    Subsea system
    two 4-slots templates plus a satellite

    Seven production wells


    Gas export through Polarled to Nyhamna

    Gas reserves 47 GSm3


    Condensate reserves 0.9 Sm3
    Lean gas condensate, low CO2 content

    Aasta Hansteen Pioneer in Norwegian deep waters

    Margins included to serve as future hub


    11

    Aasta Hansteen Key information


    Substructure
    length 198 m, diameter 50 m
    Dry weight 46.000 tonnes
    Condensate storage 25.000 Sm3
    Topside
    Dry weight 23.000 tonnes
    Conventional gas processing plant
    Gas turbine power generation
    Produced water treatment and disposal to
    sea
    LQ 100 beds

    12

    Aasta Hansteen challenges


    Aasta
    Hansteen

    New area and long distance from


    shore

    Water depth 1300 m

    Harsh weather conditions

    Worlds largest spar and first on NCS

    Need for technology qualifications

    13

    Concept screening and selection Aasta Hansteen


    14 -

    Condensate
    handling

    Production facility

    Subsea ( Deep water )


    Semi (Deep water )
    Semi (Shallow water )
    Spar (Deep water)
    FPU mono-hull (DW)
    FPU mono-hull ( SW )
    Others ?

    Power supply

    El. power
    from land ?

    15

    Multiphase transport (Subsea) land*)


    Injection
    Piping Heidrun, Skarv, others
    Storage & off-loading

    Capacity
    constraints

    Capacity at
    Nyhamna or
    other
    landing
    facilities?

    Flexibility to include
    additional resources ?
    ( disc. & prosp. )
    Subsea
    Platform
    Semi
    Spar
    FPU (mono-hull)
    Others

    Product

    Multiphase flow land*)


    Sales gas & rich gas land*)
    *) Nyhamna or other

    Additional
    resources in
    the area

    Discoveries
    Prospects
    Leads

    Norwegian sea evacuation scenarios

    16

    Product streams to Nordland


    Phase II
    Phase I

    From year 5 compression required to produce at plateau rate


    Power from shore required for Subsea compression
    This solution creates a very large technology gap, a big
    challenge to bridge
    The near field platform compression alternative selected as
    base case

    ine

    wl

    flo

    e
    as Assumptions:

    iph

    ult

    "m

    "

    =>

    l
    ica
    bil
    Um on
    i
    km 0 km ject
    0
    30 G in
    30
    ME
    /8"
    27
    km
    >

    =
    4"

    Luva

    30

    Snefrid

    Manifold

    28

    26

    2-4 slot subsea templates + 1 satellite tie-back to


    subsea manifold (8 x-trees) with flowlines 12,75" x 22,2
    mm X 65 matr, each of 3 km lengths
    Subsea manifold w/ structure (600 tonnes) with
    connection points for 4 x 12" flowlines, 1+
    24"multiphase flowlines, 6 x umbilicals and 2 x 12"
    future risers and 1 x 16" future risers for compression
    One multidiameter flowline to shore 60 km of 24"x 1"
    mm + 90 km of 26"x 1" + 150 km of 28" x 1 to
    onshore terminal, Carbon steel, 6 mm asphalt and 60
    mm concrete. 1000000m3 gravel installation, shore
    approach and freespans
    1x 300 km umbilical, trenched
    1x 300 km 2 7/8" x 6,4 mm MEG injection, X65 matr,
    FBE + 5 mm PP coating. Strapped to umbilical,
    Trenched

    Pipelines- MTO-PTT-DEC

    "m
    28
    al on
    2
    lic
    i
    => mbi ject
    "
    in
    U
    24
    G
    m
    m
    k
    0 k ME
    0
    Assumptions:
    30 /8"
    30
    1 import flowline and SCR from subsea manifold to
    27
    m
    k
    floater 6 km - 16" x 22,2 mm X 65 matr , incl SCR
    0
    30
    1 export flowline and SCR from floater to subsea
    manifold of 6 km - 16" x 22,2 mm X 65 matr incl SCR
    2 x 6 km umbilicals from floater to subsea manifold
    inlusive dynamic section
    320 km DC power cable 30-35 MW

    Luva to Shore
    Date

    Prepared by

    A4

    14.12.2009

    Per Harald Hansen

    SCALE

    NTS

    SHEET

    iph

    ult

    >

    Phase I development
    SIZE

    as

    flo

    =
    6"

    Schematic Sketch

    Luva
    Development
    DG2 cases
    Statoil

    Haklang

    0k

    32

    ine

    wl

    we

    Po

    REV

    0
    1 OF 1

    Luva

    Snefrid

    Manifold

    Schematic Sketch

    Luva
    Development
    DG2 cases

    Luva to Shore
    Phase II with Platform located compression

    Statoil

    Haklang

    17

    Pipelines, MTO-PTT-DEC

    SIZE

    Date

    Prepared by

    A4

    07.01.2010
    NTS

    Per Harald Hansen

    SCALE

    SHEET

    REV

    0
    1 OF 1

    18

    Alternative floaters with SCR - storage


    Floater

    Pros

    Deep draft semi


    with separate
    storage columns

    Cylindrical FPSO
    with large bildge
    or heave damping

    SPAR

    Octabouy

    Floater with SCR


    and separate
    storage

    Acceptable motions

    Proven

    Heave motions

    Proven (under
    construction)

    Proven

    Storage in column
    and pontoon

    Cost

    With storage

    Large storage

    Cons

    Need qualification

    Motions (roll /pitch)

    Need qualification

    Limited storage

    Air gap/green water

    Motion / air-gap issues

    Topside
    cosnstruction

    HCOG sensitive

    Open storage /soft


    tank

    Limited storage
    Topside layout

    Power
    cable

    Possible

    Possible

    Favorable

    Possible

    Possible

    Offloading

    Loading buoy

    Direct proven (ref.


    Goliat)

    Loading buoy

    Loading buoy

    Direct

    Direct needs qualification

    Direct needs
    qualification

    Direct needs
    qualification

    18

    Air gap and green water requirements


    No green water on spar deck or
    negative air gap in 100 year storms
    Positive air gap to lifeboats in 10.000
    year storms
    Negative air gap in 10.000 year storms
    shall not escalate into a sever scenario
    The Spar FPSO fulfilled all
    requirements in competition with the
    Circular FPSO

    19

    Extensive modell testing performed

    Economic analysis model


    Classificati
    on:

    Principles of economic evaluation


    Value Creation. Corporate decisions based on an overall management evaluation.
    Value creation for shareholders the main criterion (net present value after tax)
    Balanced approach. All elements that can be quantified shall be part of the
    valuation to obtain an expected value
    Strategic value. Compliance with strategic direction

    Risk management. All relevant risks to


    be identified and described
    HSE considerations a part of the total
    evaluation of any proposed decision

    21

    Value chain considerations


    Important contributors to value creation
    Values for Statoil (and partners) as
    owner(s) also outside Aasta Hansteen:
    Owner shares in other licenses that
    utilize the infrastructure
    Value of avoided deferral (capacity)
    and acceleration of volumes
    Additional values from other licenses
    in the Vring area
    Value of Gassled ownership
    Risk considerations

    22

    Value chain considerations


    Industrial development of the Norwegian Sea requires a new pipeline to transport
    gas from existing and future fields in the area
    The Polarled pipeline and Nyhamna modification project provides the gas export
    solution from Aasta Hansteen
    Other fields will likely utilize the new pipeline for export of gas
    Kristin Gas Export Pipe (KGEP) an opportunity for the currently restrained gas
    volumes from sgard Transport (T)

    Polarled and Nyhamna tariffs


    directly affected by gas
    volume basis (non-linearity)

    23

    Volume and tariff scenarios

    24

    The gas transportation system Norwegian Sea Infrastructure development


    Security
    Classificati
    on: Internal
    - Status:

    Moving into deep water in the Norwegian Sea


    Barents Sea

    Aasta Hansteen

    ?
    Norwegian Sea

    How to transport the gas


    from Aasta Hansteen?

    26

    Players in the gas transport value chain


    Gassled
    Owners of the existing gas transport
    system

    Gassco
    Operator of the transport system
    Statoil as Technical Service Provider on
    Krst and Kolsnes
    New infrastructure architecht

    Supply fields (licences)


    Operators and partners of supply fields

    Shippers
    Companies requesting gas transport
    capacity
    Potential funders of new infrastructure

    27

    NPD & OED

    Gassco yearly transport plan analysis

    Further
    development
    phases

    28

    Gas transport capacity situation from the Norwegian Sea

    Existing transport system (sgard


    Transport) full until 2020 +
    New gas transport
    infrastructure needed
    Several companies agreed with
    Gassco to consider a new
    transport solution ~2009

    29

    Source: Gassco transport plan 2013

    Process of establishing Polarled


    2009 2010: Gassco facilitated feasibility studies for new infrastructure
    Recommendation: a pipeline to Nyhamna connecting into the Ormen Lange processing
    plant and further gas export through Langeled to Sleipner

    March 2010: Gassco submitted an invitation


    to Open season
    Several companies invited to participate
    and 13 joined the study phase

    Aasta H
    Polarled
    Zidane

    Linnorm

    December 2012: Concept decision (DG2) in


    parallell with Aasta Hansteen
    December 2013: Investment decision (DG3)
    in parallell with Aasta Hansteen
    10 companies participated finally

    30

    Nyhamna

    Pipeline
    route

    31

    Pipeline length 481 km


    Uneven seabed
    Many free spans
    Optimize route

    Polarled Pipeline Project

    SCR 14

    Aasta Hansteen

    PLEM

    POLARLED

    Parameter

    Unit

    Value

    Design pressure

    barg

    233 @ 30 m MSL

    Design temperature

    -10 / + 60

    Operating pressure

    barg

    115 - 231

    Operating temperature

    55 (max) + temp. profile VICTORIA

    Capacity

    MSm3/d

    58 (entry @ kp0)
    70 (exit @ Nyhamna)

    FUTURE

    Max.
    hydrocarbon
    dew point

    Max. water
    dew-point

    barg at 0 C

    C at 69 barg

    110

    -18

    16 ID
    LEGEND

    18

    PLEM

    SUBSEA STRUCTURE

    DRAUGEN GAS EXPORT


    (LINNORM)

    36

    PIPELINE
    IN-LINE TEE
    UMBILICAL
    NYHAMNA PIG RECEIVING
    FACILITIES
    PLEM: PIPELINE END MANIFOLD/TERMINATION
    ERB: EXPORT RISER BASE
    SCR: STEEL CATENARY RISER

    32

    FIRST DRY WELD

    NYHAMNA

    PIPELINE SYSTEM

    KRISTIN
    12
    PLET
    18 (16 ID)
    ERB

    ZIDANE

    SUBMARINE PIPELINE SYSTEM

    36

    Nyhama
    Ormen Lange well stream processing plant ( operated by Shell)
    Tie-in of processing of Polarlead rich gas
    Export of sales gas through existing Langeled to Sleipner/UK

    33

    Commercial challenges prior to investment decision


    No. of commercial agreements/
    arrangements needed, such as
    Tie-in and construction
    agreements between tie-in fields
    and Polarled and Polarled and
    Nyhamna (Ormen Lange)
    Participants Agreement for
    Polarled Owners
    Capacity allocation agreement at
    Nyhamna
    Proposal for tariffs

    34

    Operating phase
    Polarled and Nyhamna will be merged with Gassled prior to start-up in 2016
    Gassco will take over as operator of Polarled and Nyhamna
    Shell ( todays operator at Nyhamna) will be Technical Service Provider at
    Nyhamna
    Transport tariffs for Polarled and Nyhamna to be settled finally by MPE prior to
    start-up in 2016
    All shippers requesting capacity must document that they have a Duly
    Substantiated Reasonable Need for Capacity (DSRN)

    35

    Key messages
    Developing a gas field and building infrastructure in parallel is a demanding task

    Requires knowledge and understanding


    of the entire value chain
    Close cooperation across internal units
    and external stakeholders is a must
    Involves all technical and economical
    disciplines
    An inspiring challenge, serving as a
    great learning arena

    36

    Thank you for your attention


    Time for questions
    Presentation title: Gas Field
    Development
    Presenters name: Torolf Christensen
    Presenters title: Vice President
    E-mail address : toc@statoil.com
    Tel: +4791589645
    www.statoil.com

    37

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