2. SULA-1 OFFSHORE OIL & GAS FIELD
(EXECUTIVE SUMMARY)
The offshore Sula-1 Block in Banggai Sula Basin and
geographically this block is located in the central Sulawesi
with the total acreage of the area cover approximately
8,207,66 Square KM.
This data used in the evaluation is purchased from Patra Nusa
Data on package of Sula-1 Block consist of seismic 2D with
total length 2981,6 km and 2 wells.
Sula Basin, an east-west trending and triangle shaped of
passive margin basin, lies within Sula, Buru, Mangui,
Salabangka and Banggai islands.
Breaking up of Gondwana Land in Mesozoic time caused its
northern part split into several micro plates which drifted to
the north away from Australia Continental Plate and resulted
in frame work of passive margin basin (Pigram and
Panggabean, 1984). The northwest part of Australia plate
pushed away by Pacific Oceanic Plate in Pliocene time and
drifted to west along the Sorong Fault.
The stratigraphy of eastern Sulawesi is related to two distinct
depositional time period, the first representing a continental
margin rift / drift sequence prior to the collision and the
second representing a foreland basin fish-molasse
sedimentary sequence, deposited in front of an easterly
migrating thrust front after collision had occurred.
Result of spatial gravity analysis indicate that closures of
gravity highs and lows within the block are relatively well
defined by the gravity and residual orde I. this suggest that
principal basin structural grains within the block areas are
oriented E-W but dissected by a series of gravity crest and
through oriented N-S to NWW-SEE as indicated the
derivative maps.
BE-2
Post mortem analyses of well Loku-1 and Alpha-1A suggested
that Alpha-1Awas dry is due to migration pathway. The Alpha-1A
is a far from kitchen where the mature source rocks present and
there are lack of fault conduit that connect the reservoir to
kitchen, Whereas well Loku-1 suggested a well with gas
discovery having test 1.68 mmcf/day; it, then, proved the
presence of active petroleum systems in Sula I Block. The main
concern is lack of reservoir as well as oil seeps at Bobulut in
Selue Besar and at Lede in Taliabu Island. These facts suggest for
the presence of active petroleum systems of the area. Burial
history model shows possibly oil window at depth 1850 meter.
Base on seismic interpretation, there are 8 (eight) closure lead
with 3 (three) horizon target of each closure lead; They are Lead1,
Lead 2, Lead 3, Lead 4, Lead 5, Lead 6, Lead 7, and Lead 8.
The potential source rock based on geochemical analyses
indicated that the source rock rich the composed of Jurassic clays
tones of the upper Bobong Formation and the upper Buya
Formation. Whereas the Quartize sandstones of Bobong and Buya
Formation are the main reservoir targets for the basin.
Hydrocarbon may be trapped in the interfingered sandstone
bodies and in growth faults and anticlines of fault drag. The unit
of intercalation of siltstone, sandstone and clay stone is an
intraformational seal in the Buya Formation, as well as, marls are
seal for Pancoran Formation.
Three reservoirs and 22 (twenty two) leads have been defined in
the Sula I Block based on seismic mapping. There are L.
Cretaceous (6 leads), Mid Jurassic (8 leads), and Early Jurassic (8
leads).
3. LEAD
Volume (acre feet)
Min Most Likely Max
L1 12278.49 24556.99 49113.98
L2 6171.741 12343.48 24686.96
L3 111745.5 223490.9 446981.9
L4 47645.86 95291.72 190583.4
L5 4649.359 9298.718 18597.44
L6 13783.02 27566.03 55132.06
L7 6439.925 12879.85 25759.7
L8 38702.07 77404.14 154808.3
Early Jurassic Lead
LEAD
Volume (acre feet)
Min Most Likely Max
L1 60092.58 120185.2 240370.3
L2 1625.553 3251.106 6502.212
L3 70892.98 141786 283571.9
L4 15201.03 30402.07 60804.14
L5 13862.95 27725.9 55451.81
L6 13554.07 27108.14 54216.28
L7 5889.985 11779.97 23559.94
L8 32913.01 65826.02 131652
Mid Jurassic Lead
LEAD
Volume (acre feet)
Min Most Likely Max
L1 31938.13 63876.25 127752.5
L2 5240.069 10480.14 20960.28
L3 12055.14 24110.29 48220.57
L4 1819.67 3639.34 7278.68
L5 14927.99 29855.97 59711.95
L6 26028.84 52057.68 104115.4
Late Cretaceous Lead
BE-4
From the volumetric calculation, the total recoverable
reserve for P50 in Sula I block for un risked, oil case
is 179.889 MMBO and 858.50 BCF for gas case.
Geological risk assessment indicated the block as
high as risk area.
Economic analyses indicator of Sula I Block is
summarized as follows:
NPV @ 12% : 42.820.430 $
IRR : 24.40%
POT : 8.62 year
PI : 1.16
Offshore Sula I Block is located in deep-water area
(ranging from 0-3500M) therefore exploration
drilling programs due to deep water require large HC
accumulation to make operation profitable. Current
oil price, however, might still make the attractive.
4. SIARAN PERS
Penandatanganan Kontrak Kerjasama WK Migas dan Gas Metana Batubara Tahun 2009
SENIN, 30 NOVEMBER 2009 14:30 WIB
DEPARTEMEN ENERGI DAN SUMBER DAYA MINERALREPUBLIK INDONESIA
SIARAN PERSNOMOR : 80/HUMAS DESDM /2009 Tanggal: 30 November 2009
PENANDATANGANAN KONTRAK KERJA SAMA WILAYAH KERJA MIGAS DAN GAS METANA BATUBARA TAHUN 2009
Dalam rangka meningkatkan produksi Minyak dan Gas Bumi Nasional serta dalam rangka meningkatkan kegiatan eksplorasi dan eksploitasi, pada hari
Senin (30/11), Pemerintah dan Kontraktor melaksanakan penandatanganan 14 (empat belas) Kontrak Kerja Sama (KKS) Baru yang merupakan hasil
penawaran Wilayah Kerja Migas dan Wilayah Kerja Gas Metana Batubara periode berikut ini:
A. Lelang Reguler Wilayah Kerja Migas Tahap II Tahun 2008/2009, sebanyak 5 KKS.
B. Lelang Penawaran Langsung Wilayah Kerja Migas Tahap I Tahun 2009, sebanyak 2 KKS.
C. Lelang Reguler Tahap I Tahun 2009 sebanyak 1 KKS.
D. Lelang Penawaran Langsung Wilayah Kerja Gas Metana Batubara Tahun 2009 sebanyak 3 KKS.
E. Penawaran Langsung Wilayah Kerja GMB pada existing WK Migas sebanyak 1 KKS dan pada existing KP Batubara sebanyak 1 KKS.
F. Lelang Penawaran Langsung Wilyah Kerja Produksi sebanyak 1 KKS.
Kontrak Kerja Sama baru hasil Reguler Tahap II tahun 2008 sebagai berikut:
No WILAYAH KERJA PERUSAHAAN
1 ANDAMAN III TALISMAN ANDAMAN BV
2 WEST GLAGAH KAMBUNA KONSORSIUM PETRONAS CARIGALI (WEST GLAGAH KAMBUNA) LTD- PT PERTAMINA HULU ENERGI WEST
GLAGAH KAMBUNA
3 HALMAHERA-KOFIAU BLACK GOLD HALMAHERA KOFIAU LLC-NIKO RESOURCES (OVERSEAS XVI) LIMITED
4 EAST BULA BLACK GOLD HALMAHERA KOFIAU LLC-NIKO RESOURCES (OVERSEAS XVII) LIMITED
5 WEST PAPUA IV BLACK GOLD HALMAHERA KOFIAU LLC-NIKO RESOURCES (OVERSEAS XV) LIMITED
Kontrak Kerja Sama baru hasil lelang Penawaran Langsung Tahap I Tahun 2009 adalah sebagai berikut:
No WILAYAH KERJA PERUSAHAAN
1 BLORA PT SELE RAYA ENERGI
2 NORTH MAKASAR STRAIT KONSORSIUM BARUNA NUSANTARA ENERGY LTD. – NIKO RESOURCES (OVERSEAS XIV) LTD
Kontrak Kerja Sama baru hasil Lelang Reguler Tahap I Tahun 2009 adalah sebagai berikut:
No WILAYAH KERJA PERUSAHAAN
1 SULA I PT BRILLIANCE ENERGY
Komitmen pasti eksplorasi dari 8 (delapan) kontraktor baru tersebut untuk 3 (tiga) tahun masa eksplorasi berupa studi geologi dan geofisika sebesar
US$ 12,4 Juta, survei seismik 2D sepanjang 10.500 km sebesar US$ 9,5 juta, survei seismik 3D seluas 3.100 km2 sebesar US$ 28,75 juta dan
pemboran sumur eksplorasi sebanyak 6 sumur dengan nilai investasi sebesar US$ 75,5 juta, sehingga total investasi komitmen eksplorasi adalah
sebesar US$ 126,2 juta. Sedangkan bonus tandatangan (Signature Bonus) yang akan diterima langsung oleh pemerintah, sebesar US$ 23,25 juta.
