ccop eppm p1w6 : north sumatra – mergui basin case …assalamualaikum and a very good morning to...

$: CCOP EPPM P1W6 : North Sumatra – Mergui Basin Case …Assalamualaikum and a very good morning to all of you.Today, I am Khairil Azhar on behalf of Petronas Malaysia would like hav\$
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

Presenter

Presentation Notes

Assalamualaikum 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

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Presenter

Presentation Notes

This 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)

Presenter

Presentation Notes

The 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

Presenter

Presentation Notes

This 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

Presenter

Presentation Notes

This 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

Presenter

Presentation Notes

We 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

Presenter

Presentation Notes

This 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

Presenter

Presentation Notes

This 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


KEUTAPANG/THALANG

BAONG/TRANG

SEURULA/TAKUA PA

PRE-TERTIARY BASEMENT

Chronostratigraphic Chart

Presenter

Presentation Notes

This 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




INDONESIA MALAYSIA

26

28

30

32

SYNRIFT SYNRIFT

PRE-TERTIARY BASEMENT

Chronostratigraphic Chart

Presenter

Presentation Notes

This 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

Presenter

Presentation Notes

This 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

Presenter

Presentation Notes

This 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

Presenter

Presentation Notes

From 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

Presenter

Presentation Notes

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

CRS map for Source Rock

Colour Description

High Risk

Medium Risk

Low Risk

LEGEND:

Presenter

Presentation Notes

Is generated by refering to maturity window

CRS map for Reservoir

Colour Description

High Risk

Medium Risk

Low Risk

LEGEND:

Presenter

Presentation Notes

Is generated by referring to paleo-environment map

CRS Map for Seal

Colour Description

High Risk

Medium Risk

Low Risk

LEGEND:

Presenter

Presentation Notes

Is 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

Presenter

Presentation Notes

We 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

Presenter

Presentation Notes

For 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

Presenter

Presentation Notes

The 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

ccop eppm p1w6 : north sumatra – mergui basin case …assalamualaikum and a very good morning to...

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