HYDROCARBON POTENTIAL OF TOLO BAY MOROWALI REGENCY: QUALITATIVE ANALYSIS

Suliantara Suliantara; Tri Muji Susantoro

doi:10.29017/SCOG.38.1.536

HYDROCARBON POTENTIAL OF TOLO BAY MOROWALI REGENCY: QUALITATIVE ANALYSIS

Suliantara Suliantara, Tri Muji Susantoro

Abstract

Tolo Bay is located between East Arm and Southeast Arm Sulawesi, reaching a water depth of up to 3500 meters below sea level. Regionally, this block is situated within Banggai Basin where some gas and oil fi elds are already in production. The closest fi eld is Tiaka Oil Field located about 125 kilometers northwest of the study area. A geo-science review has been conducted to clarify the potential existence of hydrocarbon in this block. Based on previous reports, papers, and subsurface data from the Directorate General of Oil and Gas, the study area is located within the collision area between Banggai-Sula Microcontinent and Sulawesi. This collision occurred during Late Creataceous and Middle Miocene periods. During drifting phase a sedimentation process occurred at the front of the Banggai-Sula Microcontinent. This sediment is potentially source rock and reservoir rock. Meanwhile, during the drifting phase the study area is interpreted as located at the southern part of Banggai-Sula Microcontinent. This different tectonic setting will impact on the type of sedimentary rock, hence source rock and reservoir rock occurrence in the study area is still unclear. As source rock and reservoir rock within the study area are unclear, hydrocarbon explorations will be very risky. In order to reduce exploration risk, it is proposed to conduct geological and geophysical studies using the latest seismic data that was surveyed by PT. TGS – NOPEC and PT. ECI – PGS.

Keywords

morowali, banggai, risk exploration, drifting, collision

Full Text:

PDF

References

Ferdian F., 2010, Evolution and Hydrocarbon Prospect of The North Banggai-Sula Area : Application of Sea Seeps TM The Technology For Hydrocarbone Exploration in Unexplored Areas, , Proc. Indon. Petrol. Assoc., 34th Annual Convention & Exhibition, Jakarta.

Ferdian F., Hall R., & Watkinson I., 2010, A Structural Re-Evaluation Of The North Banggai-Sula Area, Eastern Indonesia,, Proc. Indon. Petrol.Assoc., 34th Annual Convention & Exhibition, Jakarta.

Garrard R.A., Supandjono J.B., & Surono, 1988, The Geology of The Banggai-Sula Microcontinent, Eastern Indonesia, Proc. Indon. Petrol.Assoc., 17th Annual Convention & Exhibition, Jakarta.

Hamilton, W., 1979, Tectonics of the Indonesian Region, United States Geological Survey Professional Paper, 1078. http://topex.ucsd.edu/cgi-bin/get_data.cgi http://www.marine.csiro.au/eez_data/doc/bathy/gebco_08.pdf

LEMIGAS, 2007, Kuantifi kasi Sumberdaya Hidrokarbon Indonesia, Riset Internal LEMIGAS, Jakarta.

Livsey A.R., Duxbury N. & Richard F., 1992, The Geochemistry of Tertiary and Pre-Tertiary Source Rocks and Associated Oil in Eastern Indonesia, Proc. Indon. Petrol. Assoc., 21st Annual Convention & Exhibition, Jakarta

Pertamina – Unocal Indonesia Company, 1997. Total Sedimen Thickness Map of The Indonesia Region. Jakarta

Pigram C. J. dan Panggabean H., 1984, Rifting of the northern margin of the Australian continent and the origin of some microcontinents in eastern Indonesia. Tectonophysics 107, pp.331-353. see also Pigram C. J., Discussion, in Tectonophysics 121, pp.345-350

Rudyawan A. & Hall R., 2012, Structural Reassessment of The South Banggai-Sula Area : No Sorong Fault Zone, Proc. Indon. Petrol.Assoc., 36th Annual Convention & Exhibition, Jakarta.

Satyana A.H., 2006, Docking and Post-Docking Tectonic Escape of Eastern Sulawesi : Collisional Convergence and Their Implication to Petroleum Habitat, Proc. Indon. Petrol.Assoc., 34th Annual Convention & Exhibition, Jakarta.

Smith, W. H. F., & D. T. Sandwell, 1997. Global seafloor topography from satellite altimetry and ship depth soundings, Science, v. 277, pp. 1957-1962.

DOI: https://doi.org/10.29017/SCOG.38.1.536