Sera Afifah, Rohima (2013) PENGARUH PERKEMBANGAN FASIES PENGENDAPAN TERUMBU TERHADAP POTENSI RESERVOIR KARBONAT: STUDI KASUS RESERVOIR BATURAJA DI LAPANGAN KETALING BARAT. Masters thesis, UPN ''VETERAN'' YOGYAKARTA.
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Abstract
Geologi Regional Lapangan Ketaling Barat merupakan bagian Sub Cekungan
Jambi, Cekungan Sumatera Selatan. Salah satu elemen susunan stratigrafi yakni
Formasi Baturaja Miocene litologi dominan Batugamping Terumbu (Karbonat)
terendapakan langsung diatas Basement, terdapat dua jenis reservoir: Talang Akar
Reservoir Batupasir Klastik dan Baturaja Reservoir Terumbu (Karbonatan).
Menurut PT. Pertamina UBEP Jambi reservoir terbagi, yakni Platform, Phase 1
sebagai Isolated Platform dan Phase 2 sebagai Terumbu reservoir minyakbumi
yang dominan serta Struktur KBS. Permasalahan mengapa Phase 2 dapat berperan
sebagai reservoir minyakbumi yang dominan?. Apakah ada keterkaitan antara
perkembangan fasies pengendapan terumbu dan potensinya sebagai reservoir
karbonat. Keterkaitan ini akan dikaji dalam penelitian ini.
Tujuan mengetahui perkembangan fasies pengendapan terumbu Reservoir
Karbonat dari identifikasi pendekatan sekuen stratigrafi secara vertikal maupun
lateral, Model Reservoir Karbonat dan pengaruh Perkembangan Fasies
Pengendapan Terumbu terhadap Potensi Reservoir Karbonat. Indikasi Fasies
Pengendapan Terumbu pendekatan Sekuen Stratigrafi: Batas Sekuen, Maximum
Flooding Surface (MFS), Pasokan Sedimen (Secara Vertikal) dan Korelasi Waktu
Batugamping (secara Horizontal) dan Indikasi Akumulasi minyakbumi
perpotongan log Log Densitas dan Neutron.
Model Reservoir Karbonat Baturaja berkembang keep up (transgresive) berawal
patch reef satu kesatuan Batugamping Baturaja kemudian Terumbu Tiang
(Pinnacle), letak Terumbu pada Slope. Indikasi Fasies penentuan batas sekuen dan
maximum flooding surface (MFS). SB-1 sebagai base batugamping interval 1342,
SB-2 sebagai top batugamping interval 1075, sehingga didapat ketebalan
batugamping mencapai + 268 m. Indikasi keterdapatan minyak hasil indikasi
fasies dengan indikasi perpotongan log densitas dan neutron dibagi beberapa
bagian, yakni Res BRJ - A, Res BRJ- B dan Res BRJ – C. Res BRJ C sebagai Top
Batugamping interval 1070 mD dan Res BRJ A sebagai Base Batugamping
interval 1336 mD Ketebalan Batugamping mencapai + 266 m.
Fasies Pengendapan Terumbu memiliki Potensi sebagai Reservoir minyakbumi.
Keterkaitan pengaruh terhadap kondisi porositas yang berkembang sebagai
reservoir karbonat yang baik serta kondisi hidrodinamik kedudukan perangkap
stratigrafi Formasi Baturaja.
Kata Kunci: Fasies, Terumbu, Log, Sekuen Stratigrafi
Regional Geology of Ketaling Barat Field is part of Jambi Sub Basin, South
Sumatra Basin. One element of the stratigraphic arrangement Miocene Baturaja
Formation with lithology reef limestone dominant (carbonate) unconformity
deposition on basement, there are two types of reservoir : Talang Akar of
Sandstone Clastic Reservoir and Baturaja of Reef (carbonate). According to PT .
Pertamina UBEP Jambi, reservoir is divided: The Platform, Phase-1 as Isolated
Platform and Phase 2 as the dominant reef reservoirs and KBS Structure.
Problems why Phase 2 can act as a reservoir of that dominant petroleum?. Is there
a link between the development of depositional facies and its potential as a reef
carbonate reservoir. This linkage will be examined in this study.
Objectives determine the development of depositional facies of carbonate reef
reservoir identification approach to sequence stratigraphy vertically and laterally,
Carbonate Reservoir Model and influence the development of reef facies
deposition potential Carbonate Reservoir. Indications Reef facies deposition
sequence stratigraphy approach: Sequences Boundary, Maximum Flooding
Surface (MFS), Sediment Supply (Vertically) and Correlation Time Limestone
(Horizontally) and indications of petroleum accumulation intersection of Log
Density and Neutron logs .
Carbonate Reservoir models developed keep up ( transgresive ) begins with a unit
patch reef limestone Baturaja then Column reefs ( Pinnacle ), the reef slope.
Indication sequence facies and maximum flooding surface (MFS). SB - 1 as a
base of limestone interval in 1342 , SB - 2 as the top limestone interval 1075, in
order to get the thickness of the limestone reaches 268 + m . Indications of oil
accumulations: indication facies with indication intersection density and neutron
logs split several parts, namely Res BRJ - A , B and Res - Res BRJ - C. Res BRJ
C as Top Limestone interval mD and Res 1070 BRJ A as the Base Limestone
Limestone interval thickness reaches 1336 mD + 266 m.
The deposition of reef facies has potential as a reservoir of petroleum. Linkage
effect on porosity condition that develops as a carbonate reservoir as well as
hydrodynamic conditions Baturaja Formation stratigraphic traps .
Keyword: Facies, Reef, Logging, Sequence Boundary
| Item Type: | Thesis (Masters) |
|---|---|
| Subjek: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Erny Azyanti |
| Date Deposited: | 19 May 2016 07:46 |
| Last Modified: | 19 May 2016 07:46 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/1722 |
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