View
205
Download
14
Category
Preview:
DESCRIPTION
Geology
Citation preview
4/8/2014
1
PETROLEUM PLAY DAN ANALISA
CEKUNGAN ASEM-ASEM TERHADAP
POTENSI HIDROKARBONDiponegoro Ariwibowo
Geby Rezky
Vengky Cristo
STT Migas Balikpapan
Jurusan S1 Teknik Perminyakan
Konsentrasi Teknik Geologi
Pengantar Cekungan Asem-asem
Cekungan Asem-asemSecara Geologi, Berada di Sisi Tenggara Kerak Benua Sundaland
Dan berada di bagian selatan cekungan Kutai
Secara Demografi , berada di Provinsi Kalimantan Selatan dan
Sebagian masuk wilayah Kalimantan Timur
Cekungan Asem-asem
Cekungan Barito
Geologi Regional
Gambar Element Tektonik Cekungan Asem-asem
Mengapa Demikian ???
Tatanan Tektonik Apa Buktinya ???
Bukti Zona Subduksi pada zaman
Kapur
Melance Deposit
Melance Deposit
Geologi Regional
Basement
• Berdasarkan Kolom Stratigrafi Formasi
mana yang potensial Kandungan
Hidrokarbon ?
Formasi Warukin
Formasi Berai
Formasi Tanjung
Atau endapan Aluvial
4/8/2014
2
Petroleum Play “Berhasil Menemukan minyak”
Rig Alpha 1
Kisah Sukses : Blok SebukuFour (4) phases of exploration history:
Phase I: 1966 to 1978
- Awarded to Refining Associates
(Canada) Ltd (70,826 sqkm)
- Kyushu acquired the latter’s interest;
subsequently BP and UCPI held the
interest (UCPI as Operator)
- UCPI drilled 4 wells in 1970 and shot
4288 km 2D seismic (1966-1973)
- 1974 Ashland farmed-in and drilled
Makassar Straits-1 gas discovery (tested 9.2 mmscfd)
- 1975 Elf Aquitaine farmed-in and
drilled 2 wells in 1976 and PSC
terminated in Dec 1978
Phase II: 1978 – 1997
- No exploration activity
Four (4) phase of exploration
history:
Phase III: 1997 – 2003
-Gulf Indonesia signed the
Sebuku Block in 1997
- Reprocessed and shot 2D
seismic (1998 – 1999)
- Drilled Pangkat-1 oil discovery
in Dec 2000 (tested 100 bopd)
Phase IV: 2003 up to now- PEARL took over in June 2003
- Reprocessed and shot 2D
seismic (2003 – 2004)
- Re-interpret the area prior to
drilling an exploratory well in
2005
Ringkasan Sumur
Data Seismik SGF98-38A (Taka Talu-1)SW NE
Data Seismik SGF98-13 (Taka Talu-2)SW NE
4/8/2014
3
Data Log sumur Taka Talu 2Line SGF98-19 (Pangkat-1 & Makassar
Straits-1)
Well Makassar Straits-1
9.22 MMSCFGD
8 BCPD
3945-4275
Gross 330 ft
Net Pay 283 ft
Avg Pay Por 17.1%
Sw 15-30%
N/G 0.86
Sebuku PSC: Makassar Straits-1 Petrophysical
Analysis
Sebuku PSC: Makassar Gas Field – Hydrostatic
Analysis
40 0
0.
00
4
0 0 0 . 0 0
42 5
0.
00
42
50 .
0 0
4 2 5 0 . 0 0
45
00
.0
0
45
00
.0
0
45
00 . 0 0
4 5 0 0 . 0 0
45
00
.0
0
4 5 0 0 . 0 0
45
00
.0
0
4
500 . 0 0
45
00
.0
0
47
50
.0
0
4 7 5 0 . 0 0
4 75
0.
00
47
50
.0
0
4
75
0.
00
47
50
.0
0
4 7 50 .
0 0
47
50
.0
0
4 7 5 0 . 0 0
47
50
.0
0
4 7 5 0 . 0 0
50
00
.0
0
50
00
.0
0
50
00
.0
0
5 0 0 0 . 0 0
5 0 0 0 .0
0
50
00
.0
0
50
00
.0
0
5 0 0 0 . 0 0
50
00
.0
0
52
50
.0
0
52
50
.0
0
52
50
.0
0
5 2 5 0 . 0 0
52
50
.0
0
52
50
.0
0
52
50
.0
0
5 2 5 0 . 0 0
52
50
.0
0
55
00
.0
0
5 5 0 0 . 0 0
55
00
.0
0
5
5 00
.0
0
5 5 00
. 0 0
5 50
0.
00
5 5 0 0 . 0 0
55
00
.0
0
55
00
.0
0MAKASSAR ST RAITS-1
LKG - 4220.0’
POS S GDT 4615.0’
Reserve Estimate (BCF)
P90 P50P50 P10
PEARL 222 356356 524
NSAI 120 327327 556
Makassar Gas Field
4/8/2014
4
� Rifting occurred in Paleocene/early Eocene time
and rifts were infilled mostly by lacustrine and fluvio-deltaic sediments later becoming marine;
post-rift is dominated by marine influence as indicated by widespread carbonate and marine
shale deposition.
� Main reservoirs are Eocene SS of Lower Tanjung
Fm equivalent and E. Oligocene – E. Miocene Berai Limestone; secondary reservoir is Mid-Late
Miocene Warukin SS & Carbonates and Tertiary/Pre-Tertiary Basement rocks.
� Main source rock is Eocene shales and coals
deposited in lacustrine and fluvio-deltaic
environments.
� Shales of Tanjung, Berai, Warukin and Dahor Fms act as seals.
� Trapping mechanism mostly structural closures,
some bounded by faults, as well as reefs.
� Hydrocarbon migration probably began in
Oligo/Miocene time.
Generalized Stratigraphy & Petroleum System
SW-NE Schematic Structural Cross
Section SWSWSWSW NENENENE
Biostratigraphy Correlation
Traverse - Index Map
Martaban-1Martaban-1
Makassar St-1Makassar St-1Pangkat-1Pangkat-1 Taka Talu-1Taka Talu-1
Traverse - 1 & 2
4/8/2014
5
Taka Talu-2Taka Talu-2
Lari Larian-1Lari Larian-1
Traverse - 3 & 4
Lari Larian-1Lari Larian-1 Makassar St-1Makassar St-1
Traverse - 5 & 6
Top Basement - TWT Map (C.I. 20ms) Top Lower Tanjung - TWT Map (C.I. 20ms)
Top Berai - TWT Map (C.I. 20ms)
BERLIAN
1 Gas 1 Gas Makassar StraitsMakassar Straits--1 Gas 1 Gas
Discovery Discovery
CI: 20 msecCI: 20 msecCI: 20 msecCI: 20 msec
MUTIARA
Top Berai TWT Map
4/8/2014
6
Makassar Straits-1
Makassar Straits-1
Gross pay: 330 feet
Net pay: 283 feet
N/G: 0.86
Avg por: 17%
Avg Sw: 15%
Perf 35 feet interval :
Flowed 9.22 mmscfd w/
Some condensate (3/8”chk)
Gross pay: 330 feet
Net pay: 283 feet
N/G: 0.86
Avg por: 17%
Avg Sw: 15%
Perf 35 feet interval :
Flowed 9.22 mmscfd w/
Some condensate (3/8”chk)
Petrophysical Analysis - Makassar Straits-1 Berai Carbonate Paleogeography
Hydrocarbon Kitchen
Lower Tanjung to Basement Lake Deposit to Basement
Isochron Maps
Maturity Modelling – Makassar
GrabenPlay Concepts & Hydrocarbon Potential
4/8/2014
7
Kesimpulan
• Petroleum sistem pada cekungan asem-asem yaitu:� Source Rock : Source Rock Utama Formasi Tanjung pada
Batulempung dengan jenis kerogen didominasi oleh gas rawaninertinit vitrinit.
� Reservoir Rock : Reservior rock utamanya adalah FormasiTanjung dengan Porositas 20 % hingga lebih besar 30 % danpermeabilitas 105 milidarcy sampai 212 milidarcy
� Caps Rock : Batulempung Formasi Tanjung atas
� Trap : Perangkap Hidrokarbon didominasi strukutur sesar
• Berdasarakan Hasil pemaparan makalah, maka Cekungan Asem-asem memiliki potensi Hidrokarbon yang potensial untuk terus di explorasi.
Terima Kasih
Kami berterima kasih Kepada :
1. Bpk. Adi gunawan Selaku Dosen Geologi Minyak
dan Gas Bumi
2. Rekan-rekan mahasiswa Tenkik Geologi STT Migas
3. Kedua Orang Tua atas Doanya
Recommended