Aristho N. S, Deiva (2012) KARAKTERISASI BATUAN RESERVOAR MENGGUNAKAN SEISMIK INVERSI DAN MULTI ATRIBUT NEURAL NETWORK DI LAPANGAN DEANDRA_DIVINA FORMASI TALANGAKAR, CEKUNGAN ASRI. Other thesis, UPN "Veteran" Yogyakarta.
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Abstract
ABSTRAK
Daerah lapangan “Deandra_Divina” Cekungan Asri mempunyai
reservoir berupa channel batupasir yang terletak pada Gita Member dari
Formasi Talang Akar. Penelitian melakukan analisa inversi AI dan EI untuk
mengkarakterisasi batuan reservoir lapangan Deandra_Divina, Formasi Talang
Akar, Cekungan ASRI yang difokuskan pada horizon Gita dan Gita_Bottom.
Analisa lebih lanjut digunakan untuk mengetahui sebaran reservoir secara lateral
pada zona target.
Dari hasil cross plot AI vs Gamma Ray pada sumur dZ_A-11, dZ_B-11, dZ_C-01 dan dZ_D-02 terdapat ketidaksensitifan (tidak dapat dipisahkan)
pada sumur dZ_A-11 dan dZ_D-02 sementara pada cross plot EI-Far vs Gamma
Ray, keempat sumur tersebut sangat sensitif (dapat dipisahkan). Dengan
melihat hubungan antara Akustik Impedansi dan Elastik Impedansi yang telah
dilakukan dalam proses inversi metode soft constraintmaka dapat ditentukan
sebaran zona reservoir, ketebalan dan menghitung porositas efektifnya yang
pada akhirnya dapat digunakan untuk menentukan lokasi sumur
pengembangan di lapangan tersebut.
Karakterisasi batuan reservoir pada zona target secara porositas memiliki
nilai porositas sebesar 15%-34% dengan nilai Akustik Impedansi sebesar
15000 ((ft/s)*(g/cc)) –18000 ((ft/s)*(g/cc)), impedansi elastis sebesar
1320 ((ft/s)*(g/cc)) –1598 ((ft/s)*(g/cc)), porositas 15% -34% dan berdasarkan
proses slicing seismic inversion section, sebaran zona target merupakan
meandering channel.
Kata kunci : Seismik Inversi, Soft Constrain, Akustik Impedansi (AI),
Elastik Impedansi (EI)
ABSTRACT
“Deandra_Divina” field of Asri Basin has sandstone reservoir which
located in Gita Member of Talang AkarFormation. The research has done
analysis of inversion AI and EI to characterize of the reservoir rock in
Deandra_Divina Field, Talang Akar Formation, ASRI Basin. Further analysis is
used to determine the lateral reservoir distribution in the target zone.
From the result of Cross plot AI vs Gamma Ray at dZ_A-11, dZ_B-11,
dZ_C-01 and dZ_D-02 well’s, have an insensitivity (not separable) at dZ_A-11
and dZ_D-02 wells while on EI-Far the cross plot result from four wells
are very sensitive (can be separable). By looking at the relationship between the
Acoustic Impedance and Elastic Impedance with soft constraint inversion method
it can be determined the target zone distribution, the thickness and calculating the
effective porosity and can determine the development wells in this field.
The reservoir rock characterization in the target zone, the value of porosity
is 15% -34%, the Acoustic Impedance value of 15000 ((ft/s)*(g/cc)) -18000
((ft/s)*(g/cc)), the Elastic Impedance value of 1320 ((ft/s)*(g/cc)) -1598
((ft/s)*(g/cc)), the porosity value of 15% -34%and based on the slicing of seismic
inversion, the distribution of target zone is the meandering channel.
Key words : Seismic Inversion, Soft Constrain, Acoustic Impedance (AI),
Elastic Impedance (EI)
| Item Type: | Thesis (Other) |
|---|---|
| Subjek: | Q Science > QC Physics |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Ratna Sufiatin |
| Date Deposited: | 09 Jun 2016 06:28 |
| Last Modified: | 09 Jun 2016 06:28 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/3452 |
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