mergui basin case study : project progress - coordinating ......project progress 4th – 7th...

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Malaysia Team: Azhar Yusof M Razali Che Kob M Farizanuddin Jaapar Noor Farinda Salim *Khairil Azhar Ghazali Petroleum Management Unit, PETRONAS CCOP EPPM P1W6 : North Sumatra – Mergui Basin Case Study : Project Progress 4th – 7th September 2012 Labuan, Malaysia

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  • Malaysia Team:

    Azhar Yusof

    M Razali Che Kob M Farizanuddin Jaapar

    Noor Farinda Salim *Khairil Azhar Ghazali

    Petroleum Management Unit, PETRONAS

    CCOP EPPM P1W6 :

    North Sumatra – Mergui Basin Case Study : Project Progress

    4th – 7th September 2012 Labuan, Malaysia

    PresenterPresentation NotesAssalamualaikum and a very good morning to all of you.Today, I am Khairil Azhar on behalf of Petronas Malaysia would like have a presentation on the updates of North Sumatra – Mergui basin case study.

    Team team member consists of farizanuddin, noor farinda, me myself and led by Mr Razali. And our General Manager, Mr Azhar is our Team Advisor.

  • Presentation Outline q

    q

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    q

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    PresenterPresentation NotesThis is my presentation outline. Before all, I will a have a short brief for study background.

    Secondly, I will show you our project progress on well corre, chrono, seismic facies analysis & mapping

  • EPPM P1 Basin Analysis Workflow

    BASIN SCALE

    Basin Evolution History (Basin Evolution Evaluation)

    Regional Structural Trends (Structural Trend Analysis)

    Basin Architecture (Regional Structural Mapping)

    Petroleum System (Petroleum System Analysis)

    PLAY SCALE

    Chronostratigraphy (Sequence Stratigraphy

    Analysis)

    Paleogeography (Seismic Facies Analysis)

    Play-types Identification (Play Assessment and Risking)

    PresenterPresentation NotesThe slide shown the EPPM Basin Analysis workflow that has been generated during early CCOP workshop. The workflow will go from regional to play scale .

    At the moment we are at the final stage which is PLAY-TYPES IDENTIFICATION ( PLAY ASSESSMENT AND RISKING)

  • Assignment

    • Indonesia - 2D basin modeling and structure identification • Thailand - Construct schematic structural cross section - Back-stripping of each horizon • Malaysia - Well correlation - Chronostratigraphic chart - Seismic facies mapping - Common risk segment (CRS) map

    PresenterPresentation NotesThis slide shown the list of tasks that has been agreed previously by this 3 country members. Indonesia is responsible for on 2D basin + structure

    Thailand assignment is to construct schematic structural cross section & back-stripping exercise

    Malaysia done well correlation, chrono, CRS, and Seismic facies mapping

  • Study Area and Data set

    Study Area

    International Boundary

    W9 -C -1

    SIKAO-1

    SINGA BESAR -1

    NSB C-1 GPM -1

    LANGGUN TIMUR -1 PM320

    PM320

    Indonesia Malaysia

    Thailand

    • Exploration Wells – Singa Besar-1

    (Malaysia) – Langgun Timur-1

    (Malaysia) – NSB C-1

    (Indonesia) – GPM-1

    (Indonesia) – W9C-1 (Thailand) – Sikao-1

    (Thailand) Seismic Lines:

    Indonesia 12 seismic lines Thailand 4 seismic lines Malaysia 2 seismic lines

    PresenterPresentation NotesThis is the study area located between Thailand, Indonesia and Malaysia. In this study, we use 6 well data and 18 2D seismic lines.

  • Previous Results 1. Correlation of Wells:

    – Singa Besar-1 – Sikao-1 – W9C-1 (Malaysia-Thailand) – Langgun Timur-1 – NSBC-1 – GPM-1 (Malaysia-Indonesia)

    2. Chronostratigraphic chart across Malaysia, Thailand and Indonesia

    3. Seismic Facies Map: – Two (2) seismic facies map – Top Upper Miocene

    Keutapang/Thalang and Top Middle Miocene Baong/Trang Formations that covers Indonesia & Thailand

    – Geoseismic sections

    4. Common Risk Segment (CRS) map for Upper Miocene Keutapang/Thalang and Top Middle Miocene Baong/Trang Formations

    PresenterPresentation NotesWe has completed 2 well correlations and chronostratigraphic. We have done some revision on seismic facies map and CRS

  • Stratigraphic Correlation : Malaysia - Thailand ThailandThailand Singa Besar-1 Sikao-1 W9-C-1

    9 5/8’

    13 3/8’

    9 5/8’

    20’

    Zone NN11

    Zone NN12

    20’

    13 3/8’

    Top Keutapang/Thalang

    61 km 173 km

    Malaysia Thailand

    Top Basement

    Top Basement

    W9C-1

    Sikao-1

    Singa Besar-1

    60 km

    Legend :

    Sandstone Siltstone Mudstone

    Limestone

    Dolomite

    Casing shoe

    Conglomerate

    Volcanic/ Metamorphic

    SE NW

    PresenterPresentation NotesThis well correlation is from southern to northern part. between W9C1, Sikao-1 and Singa Besar well. Two well penetrated up to basement comprise of volcanic/metamorphic rock.

    The conglomerate at the half-graben and basin centre indicate the early phase of rifting.

    Carbonates growth in the basement horst and shelf margin

    Baong and Keutapang sediments thickening to the basinal indicate the sediment supply is coming from Malaysian side.

  • Langgun Timur-1 NSBC-1 GPM-1 195 km E W 60 km

    Terminated at Seabed

    Top Peutu SB

    SB

    13 3/8’

    9 5/8’

    20’

    Malaysia Indonesia

    Legend :

    Sandstone Siltstone Mudstone

    Limestone

    Dolomite

    Casing shoe

    Conglomerate

    Volcanic/ Metamorphic

    GPM-1 NSBC-1

    60 km

    Langgun Timur-1

    Stratigraphic Correlation : Malaysia - Indonesia

    NSBC-1

    Langgun Timur-1

    60 km

    GPM-1

    PresenterPresentation NotesThis is the well correlation from Eastern to Western part. This represent North Sumatra Basin cross section. So, we can see the source sediment is come from the both side Eastern and Western part. Carbonate basement at LT-1 well

  • SOUTHEAST NORTHWEST

    PLEISTOCENE

    LATE OLIGOCENE

    LATE MIOCENE

    MIDDLE MIOCENE

    EARLY MIOCENE

    EARLY OLIGOCENE

    LATE PLIOCENE

    EARLY PLIOCENE

    W9C-1 SIKAO-1 SINGA BESAR-1 GLOBAL

    SEA LEVEL

    200 -100 N S

    UM

    ATRA

    BAS

    IN

    EQU

    IVAL

    ENT

    JULU RAYEU

    SEU

    RULA

    BA

    ON

    G

    BELU

    MAI

    / PE

    UTU

    SY

    NRI

    FT/

    BAM

    PO

    AGE

    IN M

    A

    NP23

    NP24

    NP25

    NN1

    NN2

    NN3

    NN4

    NN5

    NN6

    NN7

    NN8

    NN9 NN10

    NN11

    NN12

    NN13 & Above

    P21

    P22

    N4

    N5

    N6 N7

    N8

    N9 N10 N11

    N12

    N13

    N14

    N15

    N16

    N17

    N18 & Above

    FORA

    M Z

    ON

    E

    NN

    ZO

    NE

    PERI

    OD

    / EP

    OCH

    PRE-TERTIARY

    2

    4

    6

    8

    10

    12

    14

    16

    18

    20

    22

    24

    26

    28

    30

    32

    SYNRIFT

    NON-DEPOSITION/EROSION

    NON-DEPOSITION/EROSION

    KEUTAPANG/THALANG

    BAONG/TRANG

    SEURULA/TAKUA PA

    PRE-TERTIARY BASEMENT

    Chronostratigraphic Chart

    PresenterPresentation NotesThis is the chronostratigraphic chart of seismic section from NW to SE. We generate this chronostratigraphic chart by integrating seismic section and well correlation.

    During Oligocene to Early Miocene, the basin was filled by syn-rift sediment at depocentre and carbonates growth at the shelfal area.

    In Middle Miocene, Baong sand is backstepping indicates sea level rise then in Upper miocene Keutapang formation, the sand is prograding due to the drop of sea level. Turbidite fan is found in basinal area.

    Seurula has almost same thickness indicate quite environment.

  • EAST WEST

    PLEISTOCENE

    LATE OLIGOCENE

    LATE MIOCENE

    MIDDLE MIOCENE

    EARLY MIOCENE

    EARLY OLIGOCENE

    LATE PLIOCENE

    EARLY PLIOCENE

    GPM-1 NSBC-1 LANGGUN TIMUR-1

    SYNRIFT

    BAONG/TRANG

    PEU

    TU

    GLOBAL SEA LEVEL

    200 -100

    KEUTAPANG/THALANG

    SEURULA/TAKUA PA

    N S

    UM

    ATRA

    BAS

    IN

    EQU

    IVAL

    ENT

    JULU RAYEU

    SEU

    RULA

    BA

    ON

    G

    BELU

    MAI

    / PE

    UTU

    SY

    NRI

    FT/

    BAM

    PO

    AGE

    IN M

    A

    NP23

    NP24

    NP25

    NN1

    NN2

    NN3

    NN4

    NN5

    NN6

    NN7

    NN8

    NN9 NN10

    NN11

    NN12

    NN13 & Above

    P21

    P22

    N4

    N5

    N6 N7

    N8

    N9 N10 N11

    N12

    N13

    N14

    N15

    N16

    N17

    N18 & Above

    FORA

    M Z

    ON

    E

    NN

    ZO

    NE

    PERI

    OD

    / EP

    OCH

    PRE-TERTIARY

    2

    4

    6

    8

    10

    12

    14

    16

    18

    20

    22

    24

    NON-DEPOSITION/EROSION

    NON-DEPOSITION/EROSION

    NON-DEPOSITION/EROSION

    INDONESIA MALAYSIA

    26

    28

    30

    32

    SYNRIFT SYNRIFT

    PRE-TERTIARY BASEMENT

    Chronostratigraphic Chart

    PresenterPresentation NotesThis chronostratigraphy chart of seismic section is from West to East and stratigraphy scheme is same as described before.

    We generate this chronostratigraphic chart by integrating seismic section and well correlation. For Keutapang formation, the sand is prograding due to the drop of sea level but for Baong formation, the sand is backstepping due to increasing of sea level. Carbonate basement at Langgun Timur-1

  • Facies Mapping Constructed Paleoenvironment maps for Baong/Trang and Keutapang/Thalang Formations using seismic facies analysis, structural maps and well information.

  • Seismic Facies Analysis

    Top Synrift W9C-1

    Sikao-1

    Singa Besar-1

    60 km

    GPM-1 NSBC-1

    Langgun Timur-1

    W9-C-1 DMR95-102 DMR95-150

    DMR95-125

    E W 0

    1000

    5000

    4000

    3000

    2000

    0

    1000

    5000

    4000

    3000

    2000

    5894m

    Top Upper Miocene

    Top Synrift

    PresenterPresentation NotesThis is one of seismic facies analysis. The line located in north study area. We differentiate this 6 facies by their specific seismic character.

    For example High Amplitude Clinoform, High Amplitude Parallel, Low Amplitude chaotic and so on. For further info, you can refer to panel on the wall.

  • Seismic Facies Interpretaion

    Top Synrift

    W9C-1 Sikao-1

    Singa Besar-1

    60 km

    GPM-1 NSBC-1

    Langgun Timur-1

  • Colour Environment Interpretation

    Coastal to Inner Neritic

    Middle Neritic

    Outer Neritic to Bathyal

    LEGEND:

    Carbonate

    Erosional Surface

    Paleo-environment Map of Middle Miocene Baong/Trang Formations

    PresenterPresentation NotesThis slide show paleo-environment map of Middle Miocene Formation. The yellow color indicates coastal to inner neritic, blue area indicate middle neretic and purple indicate outer neretic to bathyal.

  • Colour Environment Interpretation

    Coastal to Inner Neritic

    Middle Neritic

    Outer Neritic to Bathyal

    LEGEND:

    Carbonate

    Erosional Surface

    Paleo-environment Map of Upper Miocene Keutapang/Thalang Fms Formation

  • Potential Reservoir

    1. Coastal sand 2. Shallow Marine (Carbonate & Clastics) 3. Slope Fan Turbidite

    PresenterPresentation NotesFrom the both paleo-environment map, we could identify 3 potential reservoir in the study area.

    First is coastal sand. Secondly, shallow clastic consist of carbonate and clastics. Third one is slope fan turbidites

  • Common Risk Segment (CRS) Mapping

    The CRS maps were constructed using • Paleo-environment maps • Well data • Structural map • Structural Restoration • Results of Basin Modelling

    PresenterPresentation NotesWe have generated CRS map using 1….2….3…Bla..bla…

  • CRS map for Source Rock

    Colour Description

    High Risk

    Medium Risk

    Low Risk

    LEGEND:

    PresenterPresentation NotesIs generated by refering to maturity window

  • CRS map for Reservoir

    Colour Description

    High Risk

    Medium Risk

    Low Risk

    LEGEND:

    PresenterPresentation NotesIs generated by referring to paleo-environment map

  • CRS Map for Seal

    Colour Description

    High Risk

    Medium Risk

    Low Risk

    LEGEND:

    PresenterPresentation NotesIs generated by integrating seismic facies analysis and paleo-environment map. For example, referring to paleo-environment map, sand-shale ratio

  • Colour Description

    High Risk

    Medium Risk

    Low Risk

    LEGEND:

    Composite CRS Map

    PresenterPresentation NotesWe overlaid previous three CRS map to produce Composite CRS. We could see high risk area in basinal area due to no apparent reservoir development.

  • Risking the Plays/Sub-Plays of Miocene Clastics (Baong/Keutapang) Using CCRS Map

    The Plays are ranked as below: 1. Shallow Marine

    (Carbonate & Clastics) 2. Coastal Sand 3. Slope Fan Turbidite

    CCRS map

    Paleo-env. Map Keutapang/ Thalang

    Paleo-env. Map Keutapang/Trang

    PresenterPresentation NotesFor the risking and ranking of the play/sub-plays of Upper and Middle Miocene, we integrate Composite CRS map with Paleo-env. Map.

    The plays are ranked as below :

  • PLAY RISK WORKFLOW

    Risking and Ranking of Plays

    Identify Potential Plays

    Gross Depositional Environment Map

    Play Fairway & Common Risk Segment Maps

    PresenterPresentation NotesThe previous exercise could be summarise in this play risk workflow.

    We generate paleo-environment map. Then, identify potential plays. The next step is play fairways and CRS. And after all we do risking

  • Summary

    Potential Play/Sub-Play for Baong and Keutapang are ranked as 1. Shallow Marine (Carbonate & Clastics) 2. Coastal Sand 3. Slope Fan Turbidite

    CRS Maps indicate

    • Risky source in the basin margin especially in Melaka Platform and Mergui Shelf in the eastern margin

    • Reservoir developed in basin margin and proximal slope area. Towards the basin centre no apparent reservoir developed

    • The seals rock occurred in the deeper part of the basin, and thin progressively toward the platform and shelf area

    • Most part of the basin has been risked as having medium risk and the risky area identified in the basin centre area and less risky in basin margin area

    The established play risk workflow can be applied for risking and ranking of

    potential plays in the cross border area

  • Slide Number 1Slide Number 2EPPM P1 Basin Analysis WorkflowAssignmentSlide Number 5Slide Number 6Slide Number 7Slide Number 8Slide Number 10Slide Number 11Facies MappingSlide Number 13Seismic Facies InterpretaionSlide Number 15Slide Number 16Potential Reservoir Common Risk Segment (CRS) MappingCRS map for Source RockCRS map for ReservoirCRS Map for SealSlide Number 22Slide Number 23Slide Number 24SummarySlide Number 26