APRILLA, FAUZI HUSNI (2022) KARAKTERISASI RESERVOIR BATUPASIR MENGGUNAKAN METODE INVERSI STOKASTIK, INVERSI DETERMINISTIK MODEL BASED, DAN SEISMIC ATTRIBUTE DI LAPANGAN “NAKAMA”, CEKUNGAN SUMATERA TENGAH. Other thesis, UPN 'Veteran" Yogyakarta.
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Abstract
KARAKTERISASI RESERVOIR BATUPASIR
MENGGUNAKAN METODE INVERSI STOKASTIK, INVERSI
DETERMINISTIK MODEL BASED, DAN SEISMIC
ATTRIBUTE DI LAPANGAN “NAKAMA”, CEKUNGAN
SUMATERA TENGAH
Fauzi Husni Aprilla
Jurusan Teknik Geofisika, Fakultas Teknologi Mineral,
Universitas Pembangunan Nasional “Veteran” Yogyakarta
fauzihusni05@gmail.com
ABSTRAK
Cekungan Sumatra Tengah termasuk kedalam cekungan belakang busur dengan
sedimentasi tersier penghasil hidrokarbon terbesar di Indonesia. Hal tersebut akibat
sejarah geologi yang membentuk struktur dan stratigrafi cekungan memenuhi
sebuah konsep play hidrokarbon yang terbentuk dengan baik. Itulah yang
menyebabkan pada cekungan ini terus dilakukan studi dan evaluasi secara geologi
maupun geofisika seperti halnya karakterisasi reservoir. Penelitian ini difokuskan
untuk karakterisasi reservoir batupasir dan persebarannya. Penelitian ini
menggunakan Metode Inversi Deterministik untuk melihat sebaran reservoir
batupasir dan melihat karakterisasinya, Inversi Stokastik digunakan untuk melihat
sebaran reservoir batupasir secara lebih mendetail khususnya untuk lapisan tipis
dibawah tunning thickness dan persebaran sifat fisik batuan secara presisi. Seismic
Attribute merupakan metode yang menggunakan beberapa atribut pada data seismik
untuk memperoleh gambaran bawah permukaan. Hasil dari proses Inversi dan
Seismic Attribute dapat diintegrasikan untuk mengetahui lokasi zona prospek
hidrokarbon. Persebaran dari reservoir batupasir pada daerah penelitian pada setiap
zona didominasi oleh reservoir batupasir yang diselingi oleh shale. Reservoir sand
porous mempunyai karakteristik acoustic impedance berkisar dibawah 12.000-
16.120 (ft/s)*(g/cc) dan nilai density 1,7-2,2 g/cm3 tersebar dominan pada zona Top
Telisa dan T_TE1450. Sedangkan reservoir sand tight mempunyai karakteristik
acoustic impedance berkisar dibawah 16.120-25.000 (ft/s)*(g/cc) dan nilai density
1,7-3,1 g/cm3. Penyebaran reservoir sand tight dominan pada zona T_D1600 dan
T_D1800. Area pengembangan sumur berada di sebelah utara daerah penelitian
dengan koordinat UTM X 712500 m dan Y 188000 m. Rencana pengeboran pada
kedalaman 1250-1850 feet dari zona Top Telisa sampai zona T_D1800. Berada
pada tinggian struktur patahan naik maka memungkinkan adanya hidrokarbon pada
area tersebut.
Kata Kunci: Cekungan Sumatera Tengah, Karakterisasi, Inversi Deterministik,
Inversi Stokastik, Atribut Seismik, Sumur Pengembangan
ABSTRACT
The Central Sumatra Basin is a back-arc basin with the largest producing
tertiary sedimentation in Indonesia. This is due to the geological history that forms
the structure and stratigraphy of the basin following the concept of good
hydrocarbon play. This is the reason why geological and geophysical studies and
evaluations are carried out in this basin as well as reservoir characterization. This
research will focus to characterization of the sandstone reservoir and its
distribution. This research uses the Deterministic Inversion Method to see the
distribution of the sandstone reservoir and to see its characterization, the
Stochastic Inversion is used to see the distribution of the sandstone reservoir in
more detail, especially for thin layers under while tunning thickness value, and the
physical properties of the rock preciselly. Seismic Attribute uses several attributes
in seismic data to obtain an image of the subsurface. The results of the Inversion
and Seismic Attribute processes can be integrated to determine the location of
potential prospects. The distribution of sandstone reservoirs in the research area
in each zone is dominated by sandstone reservoirs interspersed with shale. The sand
porous reservoir has acoustic impedance characteristics ranging from 12,000 to
16120 (ft/s)*(g/cc) and a density value is about 1.7 to 2.2 g/cm3 which is dominantly
distributed in the Top Telisa and T_TE1450 zones. Meanwhile, sand tight reservoirs
have acoustic impedance characteristics ranging from 16,120 to 25,000
(ft/s)*(g/cc) and a density value is about 1.7-3.1 g/cm3. The distribution of the sand
tight reservoir is dominant in the T_D1600 and T_D1800 zones. The well
development area is located in the north of the research located area with UTM
coordinates X 712500 m and Y 188000 m. The drilling plan is at a depth between
1250 to 1850 feet from the Top Telisa zone to the T_D1800 zone, located at the
height of the thrust fault, it is possible for the presence of hydrocarbons in the area.
Keywords: Central Sumatra Basin, Characterization, Deterministic Inversion,
Stochastic Inversion, Seismic Attributes, Development Well
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Central Sumatra Basin, Characterization, Deterministic Inversion, Stochastic Inversion, Seismic Attributes, Development Well |
| Subjects: | T Technology > T Technology (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 28 Sep 2022 03:04 |
| Last Modified: | 28 Sep 2022 03:04 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/31101 |
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