Evaluasi Formasi dan Penentuan Kualitas Reservoir Formasi Tuban, Berdasarkan Data Well Logging, Lapangan ADITYA, Cekungan Jawa Timur Utara.
DAFTAR ISI
Halaman
ABSTRAK ..................................................................................................... i
ABSTRACT ..................................................................................................... ii
KATA PENGANTAR ................................................................................... iii
DAFTAR ISI ..................................................................................................vi
DAFTAR TABEL .......................................................................................... x
DAFTAR GAMBAR .................................................................................... xi
DAFTAR LAMPIRAN ................................................................................ xiv
BAB I PENDAHULUAN ............................................................................ 1
1.1. Latar Belakang Penelitian .................................................................. 1
1.2. Identifikasi Masalah .......................................................................... 3
1.3. Maksud dan Tujuan Penelitian .......................................................... 3
1.4. Kegunaan Penelitian .......................................................................... 4
1.5. Waktu dan Lokasi Penelitian ............................................................. 4
1.6. Hasil Penelitian ................................................................................. 5
BAB II TINJAUAN PUSTAKA ................................................................... 6
2.1. Geologi Regional .............................................................................. 6
2.1.1. Geologi Regional Cekungan Jawa Timur .............................. 6
2.1.2. Stratigrafi Regional Cekungan Jawa Timur .......................... 8
2.2. Stratigrafi Daerah Penelitian (Lapangan “ADITYA”) ...................... 11
2.3. Teori Dasar ...................................................................................... 15
vi
2.3.1. Kondisi Lubang Bor ............................................................ 15
2.3.1.1. Profil Rembesan dan Resistivitas ............................... 16
2.3.2. Wireline Log........................................................................ 17
2.3.2.1. Jenis dan Prinsip Pembacaan pada Log ...................... 18
2.3.3. Perhitungan Properti Petrofisika .......................................... 23
2.3.2.1. Penentuan Temperatur Formasi.................................. 23
2.3.2.2. Volume Lempung (Vshale) ........................................ 24
2.3.2.3. Porositas .................................................................... 25
2.3.2.4. Resistivitas Air .......................................................... 27
2.3.2.4. Saturasi Air ............................................................... 28
BAB III METODE PENELITIAN ............................................................... 32
3.1. Objek Penelitian .............................................................................. 32
3.1.1. Data Primer .......................................................................... 32
3.1.2. Data Sekunder ...................................................................... 32
3.2. Perlengkapan Penelitian ................................................................... 32
3.3. Langkah - Langkah Penelitian .......................................................... 33
3.3.1. Tahap Persiapan ................................................................... 33
3.3.2. Tahap Interpretasi Data ........................................................ 33
3.3.3. Tahap Integrasi dan Analisis Data ........................................ 34
3.3.4. Penyusunan Laporan ............................................................ 34
BAB IV HASIL PENELITIAN DAN PEMBAHASAN ............................... 37
4.1. Lokasi Penelitian ............................................................................. 37
4.2. Interpretasi Well log ....................................................................... 38
vii
4.2.1. Menentukan Top formasi pada interval daerah penelitian .... 40
4.2.2. Zonasi ................................................................................. 40
4.2.2.1. Zonasi Sumur JOB#10 .............................................. 41
4.2.2.2. Zonasi Sumur JOB#12 .............................................. 42
4.2.2.3. Zonasi Sumur JOB#14 .............................................. 44
4.2.2.4. Zonasi Sumur JOB#15 .............................................. 46
4.2.2.5. Zonasi Sumur JOB#16 .............................................. 48
4.2.2.6. Zonasi Sumur JOB#21 .............................................. 50
4.2.3. Penarikan Lintasan Sumur daerah penilitian ......................... 52
4.2.3.1. Korelasi 1 ................................................................... 53
4.2.3.2. Korelasi 2 ................................................................... 55
4.3. Analisis Petrofisika ......................................................................... 58
4.3.1. Volume Lempung (Vshale) .................................................. 58
4.3.2. Porositas .............................................................................. 59
4.3.3. Resistivitas Air .................................................................... 61
4.3.4. Saturasi Air ......................................................................... 63
4.3.5. Zonasi Sumur JOB#10......................................................... 64
4.3.6. Zonasi Sumur JOB#12......................................................... 65
4.3.7. Zonasi Sumur JOB#14......................................................... 66
4.3.8. Zonasi Sumur JOB#15......................................................... 67
4.3.9. Zonasi Sumur JOB#16......................................................... 68
4.3.10. Zonasi Sumur JOB#21 ....................................................... 69
4.4. Kualitas Reservoir ........................................................................... 70
viii
4.5.Peta persebaran zona minyak bumi berdasarkan korelasi sumur dan
diintegrasikan dengan depth structure map ....................................... 74
BAB V KESIMPULAN ............................................................................... 77
DAFTAR PUSTAKA .................................................................................. 79
LAMPIRAN .................................................................................................. 80
ix
DAFTAR TABEL
Tabel 2.1
Fungsi Log (Rider, 2000) ............................................................ 19
Tabel 2.2
Harga beberapa koefisien litologi dan koefisien sementasi
beberapa litologi ......................................................................... 30
x
DAFTAR GAMBAR
Gambar 1.1 Lokasi Daerah Penelitian .............................................................. 4
Gambar 2.1 Lokasi Cekungan Jawa Timur Utara (Koesoemadinata dan
Pulonggono, 1971) . ...................................................................... 6
Gambar 2.2 Zona Tektonostratigrafi Lapangan Aditya (Modified after Toni
Simo et.al. (2005) ......................................................................... 9
Gambar 2.3 Formasi Penampang bawah permukaan dari Cekungan Jawa Timur
(Koesoemadinata dan Pulonggono, 1971) . ................................... 11
Gambar 2.4 Stratigrafi Lapangan “ADITYA” (Haq et. al, 1987) .................... 14
Gambar 2.5 Penampang Lubang Bor (Harsono, 1997) ...................................... 15
Gambar 2.6 Pola respon dari log gamma ray (GR) (Kendall, 2003 modifikasi
dari Emery 1996) ......................................................................... 22
Gambar 3.1 Bagan Alir Penelitian .................................................................... 36
Gambar 4.1 Lokasi Lapangan Aditya ................................................................ 37
Gambar 4.2 Lokasi Sumur pada Lapangan Aditya ............................................ 39
Gambar 4.3 Kalibrasi Wireline Log dan Mud Log sumur JOB#10 .................... 41
Gambar 4.4 Kalibrasi Wireline Log dan Mud Log sumur JOB#12 .................... 43
Gambar 4.5 Kalibrasi Wireline Log dan Mud Log sumur JOB#14 .................... 45
Gambar 4.6 Kalibrasi Wireline Log dan Mud Log sumur JOB#15 .................... 47
Gambar 4.7 Wireline Log sumur JOB#16 ......................................................... 49
Gambar 4.8 Kalibrasi Wireline Log dan Mud Log sumur JOB#21 .................... 50
Gambar 4.9 Lintasan Sumur Daerah Penelitian .............................................. 52
xi
Gambar 4.10 Interpretasi Korelasi 1 (Barat – Timur) ...................................... 53
Gambar 4.11 Interpretasi Korelasi 2 (Utara – Selatan) .................................... 56
Gambar 4.12 Zonasi Log sumur JOB#10 ........................................................ 64
Gambar 4.13 Zonasi Log sumur JOB#12 ........................................................ 65
Gambar 4.14 Zonasi Log sumur JOB#14 ........................................................ 66
Gambar 4.15 Zonasi Log sumur JOB#15 ........................................................ 67
Gambar 4.16 Zonasi Log sumur JOB#16 ........................................................ 98
Gambar 4.17 Zonasi Log sumur JOB#21 ........................................................ 69
Gambar 4.18 Kualitas reservoir korelasi 1 (Barat – Timur) ............................. 72
Gambar 4.19 Kualitas reservoir korelasi 2 (Utara – Selatan) ........................... 72
Gambar 4.20 Zona potensi hidrokarbon korelasi 1 (Barat – Timur) ................ 73
Gambar 4.21 Zona potensi hidrokarbon korelasi 2 (Utara – Selatan) .............. 73
Gambar 4.22 Zona reservoir D daerah Pepenelitian ....................................... 74
xii
DAFTAR LAMPIRAN
LAMPIRAN 1 KORELASI LOG ...........................................................
91
LAMPIRAN 2 Gen 6. Grafik Perhitungan Temperatur Formasi ..............
95
Gen 9. Resistivity of NaCl Solutions................................
96
LAMPIRAN 3 Tabel Pay Summary pada Reservoar Batupasir “X”,
Lapangan “Y”, Cekungan Kutai, Kalimantan Timur ....... 97
xiii
Halaman
ABSTRAK ..................................................................................................... i
ABSTRACT ..................................................................................................... ii
KATA PENGANTAR ................................................................................... iii
DAFTAR ISI ..................................................................................................vi
DAFTAR TABEL .......................................................................................... x
DAFTAR GAMBAR .................................................................................... xi
DAFTAR LAMPIRAN ................................................................................ xiv
BAB I PENDAHULUAN ............................................................................ 1
1.1. Latar Belakang Penelitian .................................................................. 1
1.2. Identifikasi Masalah .......................................................................... 3
1.3. Maksud dan Tujuan Penelitian .......................................................... 3
1.4. Kegunaan Penelitian .......................................................................... 4
1.5. Waktu dan Lokasi Penelitian ............................................................. 4
1.6. Hasil Penelitian ................................................................................. 5
BAB II TINJAUAN PUSTAKA ................................................................... 6
2.1. Geologi Regional .............................................................................. 6
2.1.1. Geologi Regional Cekungan Jawa Timur .............................. 6
2.1.2. Stratigrafi Regional Cekungan Jawa Timur .......................... 8
2.2. Stratigrafi Daerah Penelitian (Lapangan “ADITYA”) ...................... 11
2.3. Teori Dasar ...................................................................................... 15
vi
2.3.1. Kondisi Lubang Bor ............................................................ 15
2.3.1.1. Profil Rembesan dan Resistivitas ............................... 16
2.3.2. Wireline Log........................................................................ 17
2.3.2.1. Jenis dan Prinsip Pembacaan pada Log ...................... 18
2.3.3. Perhitungan Properti Petrofisika .......................................... 23
2.3.2.1. Penentuan Temperatur Formasi.................................. 23
2.3.2.2. Volume Lempung (Vshale) ........................................ 24
2.3.2.3. Porositas .................................................................... 25
2.3.2.4. Resistivitas Air .......................................................... 27
2.3.2.4. Saturasi Air ............................................................... 28
BAB III METODE PENELITIAN ............................................................... 32
3.1. Objek Penelitian .............................................................................. 32
3.1.1. Data Primer .......................................................................... 32
3.1.2. Data Sekunder ...................................................................... 32
3.2. Perlengkapan Penelitian ................................................................... 32
3.3. Langkah - Langkah Penelitian .......................................................... 33
3.3.1. Tahap Persiapan ................................................................... 33
3.3.2. Tahap Interpretasi Data ........................................................ 33
3.3.3. Tahap Integrasi dan Analisis Data ........................................ 34
3.3.4. Penyusunan Laporan ............................................................ 34
BAB IV HASIL PENELITIAN DAN PEMBAHASAN ............................... 37
4.1. Lokasi Penelitian ............................................................................. 37
4.2. Interpretasi Well log ....................................................................... 38
vii
4.2.1. Menentukan Top formasi pada interval daerah penelitian .... 40
4.2.2. Zonasi ................................................................................. 40
4.2.2.1. Zonasi Sumur JOB#10 .............................................. 41
4.2.2.2. Zonasi Sumur JOB#12 .............................................. 42
4.2.2.3. Zonasi Sumur JOB#14 .............................................. 44
4.2.2.4. Zonasi Sumur JOB#15 .............................................. 46
4.2.2.5. Zonasi Sumur JOB#16 .............................................. 48
4.2.2.6. Zonasi Sumur JOB#21 .............................................. 50
4.2.3. Penarikan Lintasan Sumur daerah penilitian ......................... 52
4.2.3.1. Korelasi 1 ................................................................... 53
4.2.3.2. Korelasi 2 ................................................................... 55
4.3. Analisis Petrofisika ......................................................................... 58
4.3.1. Volume Lempung (Vshale) .................................................. 58
4.3.2. Porositas .............................................................................. 59
4.3.3. Resistivitas Air .................................................................... 61
4.3.4. Saturasi Air ......................................................................... 63
4.3.5. Zonasi Sumur JOB#10......................................................... 64
4.3.6. Zonasi Sumur JOB#12......................................................... 65
4.3.7. Zonasi Sumur JOB#14......................................................... 66
4.3.8. Zonasi Sumur JOB#15......................................................... 67
4.3.9. Zonasi Sumur JOB#16......................................................... 68
4.3.10. Zonasi Sumur JOB#21 ....................................................... 69
4.4. Kualitas Reservoir ........................................................................... 70
viii
4.5.Peta persebaran zona minyak bumi berdasarkan korelasi sumur dan
diintegrasikan dengan depth structure map ....................................... 74
BAB V KESIMPULAN ............................................................................... 77
DAFTAR PUSTAKA .................................................................................. 79
LAMPIRAN .................................................................................................. 80
ix
DAFTAR TABEL
Tabel 2.1
Fungsi Log (Rider, 2000) ............................................................ 19
Tabel 2.2
Harga beberapa koefisien litologi dan koefisien sementasi
beberapa litologi ......................................................................... 30
x
DAFTAR GAMBAR
Gambar 1.1 Lokasi Daerah Penelitian .............................................................. 4
Gambar 2.1 Lokasi Cekungan Jawa Timur Utara (Koesoemadinata dan
Pulonggono, 1971) . ...................................................................... 6
Gambar 2.2 Zona Tektonostratigrafi Lapangan Aditya (Modified after Toni
Simo et.al. (2005) ......................................................................... 9
Gambar 2.3 Formasi Penampang bawah permukaan dari Cekungan Jawa Timur
(Koesoemadinata dan Pulonggono, 1971) . ................................... 11
Gambar 2.4 Stratigrafi Lapangan “ADITYA” (Haq et. al, 1987) .................... 14
Gambar 2.5 Penampang Lubang Bor (Harsono, 1997) ...................................... 15
Gambar 2.6 Pola respon dari log gamma ray (GR) (Kendall, 2003 modifikasi
dari Emery 1996) ......................................................................... 22
Gambar 3.1 Bagan Alir Penelitian .................................................................... 36
Gambar 4.1 Lokasi Lapangan Aditya ................................................................ 37
Gambar 4.2 Lokasi Sumur pada Lapangan Aditya ............................................ 39
Gambar 4.3 Kalibrasi Wireline Log dan Mud Log sumur JOB#10 .................... 41
Gambar 4.4 Kalibrasi Wireline Log dan Mud Log sumur JOB#12 .................... 43
Gambar 4.5 Kalibrasi Wireline Log dan Mud Log sumur JOB#14 .................... 45
Gambar 4.6 Kalibrasi Wireline Log dan Mud Log sumur JOB#15 .................... 47
Gambar 4.7 Wireline Log sumur JOB#16 ......................................................... 49
Gambar 4.8 Kalibrasi Wireline Log dan Mud Log sumur JOB#21 .................... 50
Gambar 4.9 Lintasan Sumur Daerah Penelitian .............................................. 52
xi
Gambar 4.10 Interpretasi Korelasi 1 (Barat – Timur) ...................................... 53
Gambar 4.11 Interpretasi Korelasi 2 (Utara – Selatan) .................................... 56
Gambar 4.12 Zonasi Log sumur JOB#10 ........................................................ 64
Gambar 4.13 Zonasi Log sumur JOB#12 ........................................................ 65
Gambar 4.14 Zonasi Log sumur JOB#14 ........................................................ 66
Gambar 4.15 Zonasi Log sumur JOB#15 ........................................................ 67
Gambar 4.16 Zonasi Log sumur JOB#16 ........................................................ 98
Gambar 4.17 Zonasi Log sumur JOB#21 ........................................................ 69
Gambar 4.18 Kualitas reservoir korelasi 1 (Barat – Timur) ............................. 72
Gambar 4.19 Kualitas reservoir korelasi 2 (Utara – Selatan) ........................... 72
Gambar 4.20 Zona potensi hidrokarbon korelasi 1 (Barat – Timur) ................ 73
Gambar 4.21 Zona potensi hidrokarbon korelasi 2 (Utara – Selatan) .............. 73
Gambar 4.22 Zona reservoir D daerah Pepenelitian ....................................... 74
xii
DAFTAR LAMPIRAN
LAMPIRAN 1 KORELASI LOG ...........................................................
91
LAMPIRAN 2 Gen 6. Grafik Perhitungan Temperatur Formasi ..............
95
Gen 9. Resistivity of NaCl Solutions................................
96
LAMPIRAN 3 Tabel Pay Summary pada Reservoar Batupasir “X”,
Lapangan “Y”, Cekungan Kutai, Kalimantan Timur ....... 97
xiii