Listriyanto, Listriyanto (2016) POTENSI GAS SERPIH FORMASI TALANG AKAR CEKUNGAN SUMATRA SELATAN STUDI KASUS: AREA “MB” DI KABUPATEN BATANGHARI PROPINSI JAMBI. Masters thesis, UPN Veteran Yogyakarta.
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Abstract
v
SARI
Tujuan penelitian ini adalah untuk mengetahui potensi gas serpih
formasi Talang Akar berdasarkan analisis data permukaan dan data bawah
permukaan.
Area MB terletak di dalam Sub Cekungan Jambi yang merupakan bagian
dari Cekungan Sumatera Selatan. Luas wilayah sekitar 758 km2, secara
administratif terletak di Kabupaten Batanghari Propinsi Jambi.
Sub Cekungan Jambi dialasi oleh batuan dasar berumur Pra Tersier,
sedimentasi tersier dinilai dengan sedimen sedimen syn-rift dari Formasi Lahat
berumur Eosen, kemudian Formasi Talang Akar diendapkan secara tidak selaras
di atas Formasi Lahat. Formasi tersebut diendapkan selama Oligo-Miosen di
dominasi endapan fase-sag.
Selanjutnya Formasi Gumai berumur Miosen Tengah-Akhir diendapkan
Fomasi Air Banakat dan Muara Enim
Struktur geologi yang berkembang adalah sesar turun arah timur laut barat
daya sesar naik dan lipatan dengan arah barat laut-tenggara.
Hasil analisis geokimia menunjukkan bahwa Serpih Talang akar memiliki
potensi sebagai batuan induk yang dapat menghasilkan gas bila telah mencapai
tingkat kematangan Brittleness Index diperoleh dari analisis X-ray diffraction
menunjukkan sifat getas dengan kandungan kuarsa 46%.
Sifat sifat fisik reservoar yang digunakan untuk memperlirakan
sumberdaya gas serpih dalam formasi Talang Akar adalah porositas (0,04);
saturasi air rata-rata (0,35); bulk volume adalah 6,38 X 10 m2, TOC 1,6%;
vitrinite Reflectance / Ro (1,3%) dan sifat-sifat fisik gas adalah; kandungan free
gas = 78,625 scf/ton, adsorbed gas = 49 scf/ton.
Estimasi perhitungan free gas adalah 1,72 TCF dan perhitungan adsorbed
gas adalah sekitar 1,07 TCF. Kemudian total GIP di area MB adalah 2,79 TCF.
Kata kunci: data lapangan, data bawah permukaan, potensi
vi
ABSTRACT
The purpose of this study was to determine the potential of shale gas in the
Talang Akar Formation based on surface and subsurface data analysis.
The MB area is located in the Jambi Sub-Basin which is part of the South
Sumatra Basin. The area is approximately 758 km2, administratively located in
Batanghari Regency, Jambi Province.
The Jambi sub-basin is underlain by Pre-Tertiary Basement, tertiary
sedimentation is assessed by syn-rift sediments from the Eocene Lahat Formation,
then the Talang Akar Formation was deposited unconformably above the Lahat
formation. The formation was deposited during the oligo-Miocene dominated by
sag-phase deposits.
Furthermore, the Gumai formation aged mid-late Miocene was deposited
by the Banakat and Muara Enim water formations
The geological structure that developed was a northeast-southwest
downward fault, an upward fault and a northwest-southeast fold.
The results of geochemical analysis show that Talang Akar Shale has the
potential as a source rock that can produce gas when it reaches the Brittleness
Index maturity level obtained from X-ray diffraction analysis shows brittle
properties with a quartz content of 46%.
The physical properties of the reservoir used to estimate shale gas
resources in the Talang Akar formation are porosity (0.04); average water
saturation (0.35); bulk volume is 6.38 X 10 m2, TOC 1.6%; vitrinite Reflectance /
Ro (1.3%) and the physical properties of the gas are; free gas content = 78.625
scf / ton, adsorbed gas = 49 scf / ton.
The estimated free gas calculation is 1.72 TCF and the adsorbed gas
calculation is around 1.07 TCF. Then the total GIP in the MB area is 2.79 TCF.
Keywords: field data, subsurface data, potential
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | data lapangan, data bawah permukaan, potensi |
| Subjects: | Q Science > QE Geology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Eko Yuli |
| Date Deposited: | 30 Sep 2024 08:42 |
| Last Modified: | 30 Sep 2024 08:42 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/41348 |
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