Post on 05-Apr-2018
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Geologic setting of Kalimantan and Sulawesi Satyana et al. (1999)
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Geologic setting of Kalimantan (Moss and Chambers, 2000)
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Tertiary Subduction Related Melangeand Metamorphosed Sediments
Melange
Tertiary Volcanoes andVolcaniclastic
Granite Pluton
Continental Crust
Mesozoic Indurated and/orMetasediments Section
Potentially Prospective Pre-TertiarySection
Intermediate Crust of South ChinaSea
INDIAN OCEAN JAVA
EAST JAVA BASIN
VOLC ARCBAWEAN
ARCMURIAHTROUGH
KARIMUNJAWAARC
KALIMANTAN
MELAWI
BASIN
KETUNGAU
BASIN
SOUTH CHINA SEA
NW BORNEO
BASINNATUNA
AstenosphereLat
eCretaceous
Tertiary
Moho
Top Mantle
S N
ACCRETED CRUST
ACCRETED
CRUST
CONTINENTAL
CORE
S - N cross section of SE SundalandAWANG H. SATYANA - BPMIGAS
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Pertamina BPPKA, (1999)
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Kalimantan-Sulawesi wrench tectonic freeway
AWANG H. SATYANA - BPMIGAS
Baillie et al. (2004)
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AWANG H. SATYANA - BPMIGAS
Hemmes et al. (2001)
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Basins in East
Kalimantan : Barito,Kutei, Maranatha
Satyana et al. (1999)
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Kalimantan : home of the Tertiary deltas
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Baillie (2004)
Peri_Borneo
Neogenedepocenters
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Satyana et al. (1999)
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Satyana et al. (1999)
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Barito Basin
Kutei MakassarBasin
Total Indonesie
Siregar and Sunaryo (1980)
Sedimentary basins of Kalimantan
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Barito Basin The basin is subdivided into a structurally complex northern section,
dominated by reverse-faulted anticlines, and a southern area characterized
by undisturbed sediments.
The northern part of the basin contains all the fields discovered to date,
including the large Tanjung oil field (725 MMBO in place).
Proven reservoirs include syn-rift alluvial facies middle-EoceneTanjung
sands, fluvio-deltaic middle-late Miocene Warukin sands, pre-Tertiaryfractured basement, Oligo-Miocene fractured Berai carbonates.
The basin has generated significant volume of hydrocarbons, however the
existing accumulations do not show this big HC volume, leading to a Barito
Dilemma (Mason et al., 1993; Satyana, 1995). Further exploration requires new ideas to acquire remaining hydrocarbon
potential.
Awang H. Satyana (2005)
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Structural
configuration ofBarito basin
Satyana et al. (1999)
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Stratigraphy of
Barito and Pasirbasins
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Structure map of NE
Barito basin showingPaleogene grabensand distribution of oil
fields
Mason et al. (1993), Rotinsulu et
al. (1993), Satyana (1995)
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Schematic geological cross-section across the northeast area of theBarito basin.
Campbell et al. (1988)
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Satyana et al. (1999)Structural cross section across Barito basin
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Pertamina BPPKA, (1996)
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Kutei and Makassar Strait Basins (1)
The Kutei basin is arguably the deepest basin in Indonesia, the
Tertiary column alone attaining a maximum thickness of about 14 km
(Allen and Chambers, 1989), and it is 9 km deep in the productive area
near Samarinda and the Mahakam delta.
Basement is interpreted (Guritno and Chambers, 1999) to comprise
Jurassic to Cretaceous oceanic crust and is covered by a thick
turbidite sequence. The origin of Kutei basin was closely related with rifting in the
Makassar Strait. Basin development throughout the Neogene was
dominated by isostatic sag as a result of sediment loading.
Stratigraphic nomenclature is confusing with a large number ofoperators having developed their own lithostratigraphic schemes.
Awang H. Satyana (2005)
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Kutei and Makassar Strait Basins (2) The major Neogene deltaic petroleum system has generated over 11
BBOE in proven reserves. The thick pile of Neogene deltaics provide
source rocks (delta-top and delta-front coals and shallow marine coaly
shales) which are both oil and gas-prone, carrier beds (channel
sands), and Miocene-Pliocene reservoirs of Balikpapan, Kampung
Baru, and Mahakam formations that include channel and mouth-bar
sands, and delta-front turbidites.
All the major oil and gas fields in the Samarinda area are located onSSW-NNE trending, faulted anticlines of the Samarinda anticlinorium.
Sources for deepwater oil fields like West Seno and Merah Besar are
deep-marine, lowstand, coaly shales which range in age from early to
late Miocene (Peters et al., 1999) The latest successes have been in the Makassar Strait area where
Miocene, lowstand, turbidite fans of slope and basin floor fan deposits
host significant oil and gas discoveries (like Ranggas, Sadewa,
Gendalo)Awang H. Satyana (2005)
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Kutei and Makassar Strait Basins (3) Other under-explored potential include :
large, pro-delta carbonate buildups
smaller, shelfal, delta-front carbonates (Siemers et al., 1993)
onshore syn-rift clastics (Guritno and Chambers, 1999)
Oligocene carbonates toward the basin margin (Kerendan type)
Presently deepwater (offshore) syn-rift Eocene sands of Makassar
Strait
Sources for deepwater oil fields like West Seno and Merah Besar are
deep-marine, lowstand, coaly shales which range in age from early to
late Miocene (Peters et al., 1999)
The latest successes have been in the Makassar Strait area whereMiocene, lowstand, turbidite fans of slope and basin floor fan deposits
host significant oil and gas discoveries (like Ranggas, Sadewa,
Gendalo)
Awang H. Satyana (2005)
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Fields of Kutei basin
Satyana et al. (1999)
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Allen and Chambers (1996)
Cross section of Kutei basin, bottom is cross section
of the Samarinda Anticlinorium.
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Ferguson and McClay (2002)
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Satyana et al. (1999)
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Ferguson and McClay (2000)
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Ferguson and mcClay (1997)
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Paterson et al. (1997)
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Mahakamstratigraphy
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Pertamina BPPKA, (1996)
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Pertamina BPPKA, (1996)
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Relationship of Kerendan area to upper Kutei (Mahakam) and Barito
platformvan de Weerd and Armin (1992)
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Paterson, 1997)
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Paterson et al. (1997)
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Organic content of Mahakam shales
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Netherwood (2000)
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Netherwood (2000)
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Netherwood (2000)
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Peterson at al., (1999)
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Pertamina BPPKA, (1996)Cross section of Mahakam petoleum systems
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West-east section showing migration pathways
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Trurbiditic lowstand sedments were deepwater area of North arm of Sulawesi
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Makassar Strait deepwater fields
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Toe thrust systems in the Kutei basin
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Gravity model for North Makassar Strait
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Source rocks of deepwater area are deeper turbiditiv value.
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Tarakan Basin (1) The Tarakan basin represents a passive deltaic margin where the
Sesayap and other rivers transport fine-grained sediments into the
northern Makassar Strait. The basin is dominated by a series of NW-SE trending, sinistral
transform faults and similarly trending anticlines, dividing the basin
into four sub-basins : Tidung, Tarakan, berau,Muara sub-basins.
In the offshore region, major north-south growth faults are thedominant structural control on sedimentation (Netherwood and Wight,
1993).
The distal, offshore stratigraphy is dominated by abundant deltaic
clastics, and laterally equivalent, shallow- to deep-marine basinal
shales and local carbonates.
Landward paralic intervals contain coals and carbonaceous shales
which represent a similar HC sources to those of the Mahakam delta.
Awang H. Satyana (2005)
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Tarakan Basin (2) The whole Miocene has rarely been penetrated. Older
sediments are encountered to the western and southern parts
of the basin.
The is still potential for structural and stratigraphic traps along
the large Bunyu and Tarakan arches. Some of the best
opportunities are basinward of large growth faults, on rolloveranticlines where multiple-stacked sands occur. Opportunities
also be possible in the lowstand fans that spill of the fronts of
growth faults, such as very recently discovered Aster structure
(Eni, 2005). Other opportunities include possible sourcing from
deeper syn-rift sediments and possible large carbonate
reservoirs in the south of the basin.
Awang H. Satyana (2005)
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Pertamina BPPKA (1996)
Basin configuration
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Basin configurationof Tarakan Basin
Satyana et al. (1999)
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Pertamina BPPKA (1996)
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Structural cross section across Tarakan basin
Satyana et al. (1999)
Stratigraphy and Tectonic Setting
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Stratigraphy and Tectonic Settingof Tarakan Basin
TectonicEvents
PostRifting
SubsidencetotheEast
ContinentalMargin
Syn-Rift
EconomicBasement
SB /40 ?
SB /26 ?
SB-01/23.2
SB-02/17.2
SB-07/7.2
SB-08/5.6
Sequence
Unit (this study)
Depositional
Cycle (Zanial, 1984)
Cycle 5
Cycle 4
Cycle 3
Cycle 2
Cycle 1
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Netherwood (2000)
Tarakan basin
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Tarakan basintrapping model
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PLATFORM HALF GRABENTRANSVERSE
RIDGESLOPE DEEP/MAIN DEPOCENTRE
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Stratigraphy of Melawi and
Ketungau
Stratigraphy of
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Melawi and
Ketungau basin.
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