Petroleum Geology of SE Asia
Maarten Wiemer
5 half-day sessions online (or 3 full days F2F classroom)
Business context
Throughout the exploration cycle, from play-based exploration to
prospect maturation, from near field exploration to appraisal, a
sound geological knowledge of basin type, sediment-fill, and
deformation phases, should underpin the regional play and detailed
prospect specific mapping, modelling and subsequent risk and
volumetrics work.
Based on the trainer's experience of NW Borneo hydrocarbon
exploration and development, extensive use of outcrop analogues and
relevant subsurface analogue data, the course aims for delegates to
acquire knowledge not only on SE Asian basin settings, but also how
their petroleum systems work. The subsequent petroleum geological
focus is on reservoir/seal distribution as well as regional
deformation phases and trap formation.
The course will make use of seismic, log and core data, but it
will also make ample use of NW Borneo's first-class outcrops as
analogues to the subsurface. Seismic stratigraphic principles
underpin the Petroleum Geological evaluation.
Where relevant, sediment petrographic data and principles will
be used to invoke reservoir effectivity discussion.
Who should attend
The course is aiming at geoscientists working on play-based
exploration and prospect generation / maturation projects as well
as near-field exploration / appraisal.
Course content
The course will be delivered as a 5-session (half days) VILT
course, or as a 3-day classroom F2F course.
- The approach this course takes is geological rather than tool
focused.
-
- Tectonic Evolution of Southeast Asia.
- Overview of the petroleum systems and petroleum geological
characterization of SE Asia basins.
- Discussion of structural setting information and basinfill
analysis based on seismic stratigraphy, log facies, core, and
outcrop data.
- A virtual reality field trip to outcrops linked to the NW
Borneo Miri Oilfield case history.
- Examples / Case histories include:
-
- Indonesia's Kutei (Kalimantan) and South Sumatra Basins
- Vietnam's Cuu Long and Nam Con Son Basins
- Malay Basin
- South China's Qiongdongnan Basin
- Philippines' Palawan Basin
- NW Borneo
- Most case histories derive from NW Borneo Hc Provinces, Hc
Plays and oil / gas accumulations.
-
- Discuss reservoir / seal and structure of Baram province
oilfields using northern Sarawak clastic outcrops as analogues
including the onshore Miri Oilfield and a virtual reality fieldtrip
to a Miri Hill outcrop.
- The Sarawak Luconia Carbonate province gas-play and
fields.
- The large deltaic growth-fault oil/gas fields in Brunei and
Sabah.
- The DW oil and gas fields of Sabah deep water.
- Labuan Island and KK area (Sabah) deep water outcrops are used
as direct analogues.
Learning, methods and tools
- The course makes use of data such as seismic, log, core,
outcrop, and satellite images.
- Method of teaching consists of a mix
of lectures and hands-on exercises, while
stimulating individual, team, and plenary discussion.
Day by day programme
Session 1: Introduction to SE Asian Plate Tectonics,
Basins, and Petroleum Systems
- Course Introduction.
- Short Introduction of Seismic Stratigraphy: geology from
seismic, depositional sequences and the systems tract basin margin
model.
- SE Asia Plate Tectonic Setting (including exercise) and linked
basin types.
- Introduction to the SE Asian Petroleum Systems.
- A quick Round of the SE Asia Petroleum Basins: NW Borneo
Basins, Kalimantan Kutei Basin, South Sumatra Basin, Malay Basin,
Vietnam Cuu Long and Nam Con Son Basin, South China Qiongdongnan
Basin, and Philippines Palawan Basin.
Session 2: Baram Province Clastic O/G Fields and Miri Oil
Field History and Virtual Fieldtrip
- Recap session 1
- Setting of the Sarawak Geological Provinces.
- Basic stratigraphy and Northern Sarawak depositional sequence
boundary example in outcrop and on seismic. Discuss structurally
driven sequence boundaries.
- Stratigraphic Architecture of a/o the Luconia Province Shallow
Clastics (including exercise) and Baram Province Beryl gas field
examples.
- Serendipity and the discovery of the Miri Oilfield including a
virtual fieldtrip (with Carol Hopkins).
Session 3: Luconia Carbonate (Sarawak Offshore) Gas
Province
- Recap session 2
- Discussion of setting and morphology of the Luconia Carbonate
Gas Province.
- Carbonate depositional system, basal carbonate platform
connectivity discussion.
- Build-up morphology and depositional relation with surrounding
clastics (including exercise).
- Gas charge and column length: thief zones, top seal strength
and pressure gradients.
- Build-up reservoir characterisation: PoroPerm distribution /
karst / fractures (including exercise).
Session 4: Deltaic Growth-Fault Oil/Gas Fields inboard
Brunei and Sabah margins
- Recap session 3
- Introducing the Labuan Island outcrops as a nearby outcrop
analogue to Brunei /Sabah inboard deltaic oil/gas Fields.
- Regional deformation patterns.
- Seismic stratigraphy and trap / reservoir delineation
(including exercise).
- Large delta depositional systems, nature of growth faults and
linked trap and reservoir delineation (including several field
examples).
- Structurally controlled basin margin (including exercise) and
slope canyon trap and reservoir style.
Session 5: Deep Water Oil and Gas Fields of
Sabah
- From Inboard Deltaic to Outboard Deep Water Setting (including
exercise).
- Forced regression and sediment supply to the Sabah deep
water
- Discussion of Deep-Water Depositional Processes, Products, and
architectural elements, based on Sabah seismic and onshore (Kota
Kinabalu) deep water facies outcrops.
- Mass Transport Complexes in outcrop (Labuan) and on seismic
(including exercise).
- Reservoir challenges - thin beds (including examples and an
exercise) based on seismic, log, core, and Labuan deep water thin
bed outcrop.
- How to ''bring'' clastic reservoirs into deep water thrust
based anticlinal traps.
Course wrap-up