PRASTYA, KEVIN (2022) MODEL GEOMETRI LAPISAN BATUBARA BERBASIS GEOFISIKA WELL LOGGING DI FORMASI BALIKPAPAN DAN KAMPUNGBARU, KEC. LOA JANAN, KAB. KUTAI KARTANEGARA. Other thesis, UPN 'Veteran" Yogyakarta.
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Abstract
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ABSTRAK
Ahli eksplorasi bergantung pada sampel batuan untuk mengidentifikasi
kondisi fisik batuan untuk menjelaskan perubahan yang dialami batuan khususnya
batubara sejak diendapkan. Pengukuran logging dapat memberikan informasi
tersebut mulai dari keberadaan, kontinuitas, ketebalan, dan korelasi lapisan
batubara yang dangkal hingga dalam di daerah yang diketahui mengandung
batubara yang belum sepenuhnya dieksplorasi. Formasi Balikpapan dan Formasi
Kampungbaru berada di Cekungan Kutai yang merupakan salah satu contoh suatu
cekungan marginal rift dimana batubara derajat sedang tersingkap di permukaan
daratan saat ini. Daerah penelitian dikendalikan oleh Antiklin Palaran asimetri yang
menunjam arah Timurlaut-Baratdaya dengan kisaran kedudukan bidang perlapisan
di sayap landai bagian Barat N190-240°E/26-41°. Dari model geometri lapisan
batubara di Formasi Balikpapan dan Formasi Kampungbaru terlihat variasi
ketebalan dikendalikan oleh kondisi morfologi cekungan saat pengendapan lapisan
batubara. Kecenderungan penebalan mengarah ke selatan yang menunjukan arah
aliran saat pengendapan. Selanjutnya faktor pengontrol utama terhadap kemiringan
lapisan batubara yang ditemui pada lokasi penelitian berupa pergerakan tektonik di
Cekungan kutai yang membentuk Antiklin Palaran. Berdasarkan data logging,
kedua formasi termasuk upper delta plain dengan ciri ciri yaitu tebal lokal, terputus
secara lateral ditandai dengan ditemukanya beberapa washout pada lapisan
batubara. Geometri lapisan batubara berpengaruh terhadap cadangan ekonomis,
arah penambangan, sistem penambangan, rencana produksi, dan stripping ratio.
Kata kunci : Geometri Lapisan Batubara, Well Logging, Formasi Balikpapan,
Formasi Kampungbaru,
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ABSTRACT
Explorationist rely on rock samples to identify the physical condition of the
rock to explain the changes that rock has experienced since it was deposited.
Logging measurements can provide such information on the presence, continuity,
thickness, and correlation of shallow to deep coal seams in areas known to contain
unexplored coal. The Balikpapan Formation and the Kampungbaru Formation are
located in the Kutai Basin which is an example of a marginal rift basin where
medium grade coal is exposed on the surface nowadays. The study area is
controlled by the asymmetrical Palaran Anticline which subducts in a northeast�southwest direction with range of strike/dip on the western sloping limb N190-
240°E/26-41°. From the geometry model of the coal seam at the contact of the
Balikpapan Formation and the Kampungbaru Formation, it can be seen that the
variation in thickness is controlled by the morphological conditions of the basin
during the deposition of the coal seam. The tendency of thickening is towards the
south which indicates the direction of flow during deposition. Furthermore, the
main controlling factor for the slope of the coal seam found at the research site is
the tectonic movement in the Kutai Basin which forms the Palaran Anticline. Based
on the geophysical logging data, the two formations are upper delta plain with the
characteristics of local thickness, laterally disconnected, marked by the discovery
of several washouts in the coal seam. The geometry of the coal seam affects the
economic reserves, the direction of mining, the mining system, the production plan,
and the stripping ratio.
Keywords : Coal Seam Geometry, Well Logging, Balikpapan Formation,
Kampungbaru Formation
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Geometri Lapisan Batubara, Well Logging, Formasi Balikpapan, Formasi Kampungbaru |
| Subjects: | Q Science > QE Geology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Geography |
| Depositing User: | Eko Yuli |
| Date Deposited: | 04 Jul 2022 01:44 |
| Last Modified: | 04 Jul 2022 01:58 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/30225 |
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