COAL BED METHANE POTENCYOF TANJUNG FORMATION IN TANAH BUMBU SOUTH KALIMANTAN

  • David P Simatupang Pusat Sumber Daya Geologi
  • Deddy Amarullah Pusat Sumber Daya Geologi
DOI: https://doi.org/10.47599/bsdg.v5i2.256
Kata Kunci: anjung Formation, Tanah Bumbu, CBM, methane content.

Abstrak

Coal deposits distributes widely in Indonesia, mainly in Sumatera and Kalimantan. These deposits become an indication for a huge quantity of coal-bed methane (CBM) potency. As an environmentally friendly source of energy, CBM could be one of Indonesia's future energy sources. Centre for Geological Resources (CGR) started the exploration for this energy since 2005, while the study was conducted in 2008 at Tanjung Formation in Tanah Bumbu Area, South Kalimantan.

CSAT-1 well was drilled to provide CBM resources and deep coal mine potency data for Tanjung Formation (Eocene) in Asem-asem Basin. This well went through 10 coal seams with three main seam, which is E seam at 212.34-213.30 m depth, I seam at 261.93-264.20 m, and J seam at 270.20-275.35 m depth. Calorific value from this three main seam categorized as high rank coal, vary from 6197-6745 cal/gram (adb), with total moisture between 4.51-7.11 %, adb.

Total coal resources used for CBM resources quantification is 112,733,226 tons (between 300 to 1000 meters depth). Based on desorption test and gas chromatograph measurement from samples at various depth from three main seams, those coal gives methane resources estimation about 430 MSCF, with methane content vary between 1.2 - 6.6 cu-ft/ton of coal.

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Referensi

Rustandi, E., Nila, E. S., Sanyoto, P. & Margono, U. 1995. Peta Geologi Lembar Kotabaru Kalimantan, P3G.

Satyana, A. H & Silitonga, P. D. 1994. Tectonic Reversal in East Barito Basin, South Kalimantan: Consideration of the Type of Inversion Structures and Petroleum System Significance. Proceedings of the Indonesian 22nd Annual Convention.

Sikumbang N. 1986. Geology and Tectonics of Pre Tertiary Rocks in Meratus Mountains, South East Kalimantan, Indonesia. Ph.D Thesis University of London.

Sikumbang, N. & Heryanto, R. 1994. Peta Geologi Lembar Banjarmasin, Kalimantan, P3G.

Tim Pemboran Tanah Bumbu. 2008. Laporan Pemboran Dalam dan Pengukuran Gas dalam Lapisan Batubara Daerah Tanah Bumbu Provinsi Kalimantan Selatan, Pusat Sumber Daya Geologi

Diterbitkan
2010-08-31
Terbitan
Vol 5 No 2 (2010): Buletin Sumber Daya Geologi
Bagian
Buletin Sumber Daya Geologi

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