CBM In Indonesia
Resource Potential: 453 Tcf
| Basin | Province |
Target Formation |
Completeable Coal Thickness (m) |
Coal Rank (Ro%) |
Average Depth (m) |
High Graded Area (km2) |
CBM Resources | ||
|
Completeable (Tcf) |
Concentration (Bcf/mi2) |
||||||||
| 1 | S. Sumatra | S. Sumatra | M.Enim | 37 | 0.47 | 762 | 7,350 | 183 | 25 |
| 2 | Barito | S. Kalimantan | Warukin | 28 | 0.45 | 915 | 6,330 | 102 | 16 |
| 3 | Kutei | E. Kalimantan | Prangat | 21 | 0.50 | 915 | 6,100 | 80 | 13 |
| 4 | C. Sumatra | Riau | Petani | 15 | 0.40 | 762 | 5,150 | 53 | 10 |
| 5 | N. Tarakan | E. Kalimantan | Tabul | 15 | 0.45 | 701 | 2,734 | 18 | 6 |
| 6 | Berau | E. Kalimantan | Latih | 24 | 0.45 | 671 | 780 | 8.4 | 11 |
| 7 | Ombilin | W. Sumatra | Sawaht | 24 | 0.80 | 762 | 47 | 0.5 | 11 |
| 8 | Pasir/Asem | S. Kalimantan | Warukin | 15 | 0.45 | 701 | 385 | 3.0 | 8 |
| 9 | NW Java | W. Java | T.Akar | 6 | 0.70 | 1,524 | 100 | 0.8 | 8 |
| 10 | Sulawesi | S. Sulawesi | Toraja | 6 | 0.55 | 610 | 500 | 2.0 | 4 |
| 11 | Bengkulu | Bengkulu | Lemau | 12 | 0.40 | 610 | 772 | 3.6 | 5 |
| Total | 30,248 | 453 | 15 | ||||||
Source: Stevens, S. "Indonesia Coalbed Methane Indicators and Basin Evaluation", presented at SPE Asia Pacific Oil and Gas Conference and Exhibit, Perth, Australia, 18-20 October, 2004, SPE 88630, Advanced Resources International, Inc. on behalf of Hadiyanto, Indonesian Ministry of Energy and Mineral Resources, Directorate General of Geology and Mineral Resources.
Indonesia has highly prospective CBM potential, with an estimated 453 Tcf of in-place resources located mainly in Sumatra and Kalimantan provinces. Relatively young in age (Miocene), the country’s coal deposits are extremely thick and low in ash content (<5%). Indonesia’s coal seams are of relatively low thermal rank (sub-bituminous) and have low-moderate gas content with reasonably high permeability. Geologic settings in the country are mostly favorably simple.
Many of the conventional oil & gas wells drilled in Indonesia encountered thick coals with strong gas kicks as they were drilled towards deep targets. Seismic data document thick coal deposits dipping toward CBM-optimal depths (0.3 to 1.5 km) within the deep onshore basins. Although these excellent indicators were overlooked for many years, today Indonesia is considered to have some of the world’s best undeveloped CBM potential.
CBM exploration and development has intensified in Indonesia in recent years, particularly since the first Production Sharing Contracts were awarded in 2008. At the same time gas prices have risen sharply, to $11/Mcf in Central Sumatra and $15/Mcf in East Kalimantan. (Note that gas prices are 5 to 10 times higher than in North America.)
In March 2011 BP and ENI (VICO) established the country’s first commercial CBM production, exporting liquefied natural gas from the under-utilized Bontang liquefaction facility to high-priced north Asia markets. This project established the world’s first export of CBM-to-LNG, several years ahead of the Australia plants under construction. ENI estimated CBM production could reach 420 MMcfd by 2020 from their 13-Tcf block. ExxonMobil, TOTAL, Dart Energy, and Santos also are testing CBM PSC’s, some quite close to CBM Asia’s interests.
CBM Basins Within Indonesia
