NUMERICAL MODELLING OF GEOTHERMAL RESERVOIR IN GUNUNG TALANG, WEST SUMATERA, INDONESIA

Lia Putriyana, Hari Soekarno

Abstract


Gunung Talang geothermal field is a part of Gunung Talang – Bukit Kili geothermal working area, which is located in Solok Regency, West Sumatera, Indonesia, about 54 km to the northeast of Padang city. A numerical model consisting of 1,680 grid blocks, covering an area of 17 km2 was developed for reservoir simulation. Two development strategies scenarios were constructed by considering various aspects such as reservoir behaviour, power plant’s lifetime, environmental effects, resources, and prospect area. The power plant’s power generation capacity and production lifetime of the scenarios are respectively 41,83 MW with 106 years production lifetime from the first scenario and 79,53 MW with 54 years production lifetime from the second scenario. Nowadays, the Gunung Talang – Bukit Kili geothermal working area is being auctioned with a potential power generation of 65 MW.

ABSTRAK – Pemodelan numerik reservoir panasbumi di Gunung Talang, Sumatera Barat, Indonesia.

Lapangan panas bumi Gunung Talang merupakan bagian dari Wilayah Kerja Panasbumi Gunung Talang – Bukit Kili yang terletak di Kabupaten Solok, Sumatera Barat, Indonesia, sekitar 54 km arah timurlaut Kota Padang. Model numerik yang terdiri dari 1.680 blok grid untuk area seluas 17 km2 dibuat untuk mensimulasikan reservoir. Dua skenario strategi pengembangan dibangun dengan mempertimbangkan beberapa aspek seperti perilaku reservoir, umur pembangkit, pengaruh terhadap lingkungan, sumber daya, dan area prospek. Kapasitas pembangkitan daya pembangkit listrik hasil skenario pertama adalah 41,83 MW dengan umur produksi 106 tahun, sedangkan skenario kedua menunjukkan kapasitas 79,53 MW dengan umur produksi 54 tahun. Saat ini, WKP Gunung Talang – Bukit Kili sedang dalam proses lelang dengan potensi pembangkitan listrik sebesar 65 MW. 

 


Keywords


numerical modeling, development scenario, geothermal reservoir, Gunung Talang

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References


Diaz, Alexandre Rivera, Kaya, E., and Zarrouk, S. J., 2016. Reinjection in Geothermal Fields - A Worldwide Review Update. Renewable and Sustainable Energy Reviews 105-162.

Grant, A. Malcolm, 2000. Geothermal Resource Proving Criteria. World Geothermal Congress. Kyushu-Tohoku, Japan. 2581-2584.

Idral, Alanda, 2011. Effects of Subsurface Topography and Hydrogeology on Gunung Talang Hot Water Systems, Sumatra, Indonesia: An Analysis Based on Gravity Data. Thirty-Sixth Workshop on Geothermal Reservoir Engineering. Stanford, California.

Kholid, Muhammad, and Marpaung, Harapan, 2011. Survei Magnetotellurik Daerah Panas Bumi Bukit Kili - Gunung Talang, Kabupaten Solok, Sumatra Barat. Prosiding Hasil Kegiatan Pusat Sumber Daya Geologi . Bandung, Indonesia: Geological Agency of Indonesia.

Lawless, Jim, 2000. Geothermal Lexicon for Resources and Reserves Definition and Reporting. Adelaide, Australia: Australian Geothermal Reporting Code Committee.

Munandar, A., Suhanto, E., Kusnadi, D., Idral, A., and Solaviah, M., 2003. Penyelidikan Terpadu Daerah Panas Bumi Gunung Talang Kabupaten Solok - Sumatra Barat. Kolokium Hasil Kegiatan Inventarisasi Sumber Daya Mineral. Bandung, Indonesia: Geological Agency of Indonesia.

Pusat Sumber Daya Geologi, 2013. Daerah Panas Bumi Gunung Talang - Bukit Kili, Kabupaten Solok, Provinsi Sumatra Barat. Usulan Wilayah Kerja Pertambangan (WKP). Bandung, Indonesia: Geological Agency of Indonesia.

Rezky, Y., Munandar, A., and Djukardi, D., 2013. Prosiding Hasil Kegiatan Lapangan Pusat Sumber Daya Geologi. Bandung, Indonesia: Geological Agency of Indonesia.

Rohaendi, N., and Agustine, F., 2016. Geological and Mineralogical Studies on Long-Term Development of Geothermal Area: Case Study of Fault Fracture Density Analysis of Remotely Sensed Lineaments of Gunung Talang Geothermal Fields. PIT IAGI Ke-45. Bandung, Indonesia.

Santoso, D., Suparka, M. E., Sudarman, S., and Suari, S., 1995. The Geothermal Fields in Central Part of the Sumatra Fault Zone as Derived from Geophysical Data. World Geothermal Congress. Florence, Italy. 1363-1366.

Sarmiento, Z. F., and Bjornsson, G., 2007. Geothermal Resource Assessment - Volumetric Reserves Estimation and Numerical Modelling. Reykjavik, Iceland: United Nations University - Geothermal Training Programme and La Geo.

Sigurdsson, O., Arason, P., and Stefansson, V., 1995. Reinjection Strategy for Geothermal System. World Geothermal Congress. Florence, Italy. 1967-1971.

Utami, Z. D., and Putra, A., 2018. Penentuan Karakteristik Fluida dan Estimasi Temperatur Reservoir Panas Bumi di Sekitar Gunung Talang. Jurnal Fisika Unand Vol. 7, No. 2, April: 130-137.




DOI: http://dx.doi.org/10.14203/risetgeotam2020.v30.1058

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