Tectonics, Stratigraphy and Geochemistry of the Makassar Straits: Recent Updates from Exploring Offshore West Sulawesi, Opportunities and Risks

Satyana_2012_ipa_156

This is a review paper on the tectonics, stratigraphy  and geochemistry of West Sulawesi Offshore, Indonesia. This paper is presented at the 36th IPA meeting. The increase of exploration activity in West Sulawesi Offshore has enhanced our understanding but, it cannot instantly build a thorough knowledge of the petroleum geology of the area. There have been surprising results, both positive and negative, that were unexpected when compared with the prognoses for the wells drilled recently. It therefore appears that assessing the risk of both plays and prospects in this area is still difficult.

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Welcome to our blog

Bumi_ino

Hi all! Welcome to our blog, Tektonesiana.

The name of Tektonesiana is derived from the word tectonics and Indonesia. Tektonesiana represents our ‘passion’ on tectonics of Indonesia.

We, Indonesian geologists who share the same interest, use this blog to post articles that represent our works. These articles have been presented in scientific meetings. Some of them also have been published in journals. We have many questions about tectonics of Indonesia, and we want to share them with you. Enjoy our blog!

View our list of publications

Trace of the translated subduction in Central Java and its role on the Paleogene basins and petroleum system development

Armandita_2011_jcm

This is a note about an abstract presented at the JCM MAKASSAR 2011, the 36th HAGI and 40th IAGI Annual Convention and Exhibition. A NW – SE trending Pamanukan Cilacap Fault Zone (PCFZ) has been interpreted to become barrier between Neogene deep water basins in western and central Java. The PCFZ is interpreted to have translated the eastern extension of SW-NE pre-Tertiary subduction zone ±200 km to the southeast. These tectonics models suggest that the prolific hydrocarbon zone associated with Sundaland, originally developed to the east of the Northwest Java Basin (NWJB) has been translated to the southeast along the PCFZ. This regional tectonic reconstruction can be a possible alternative model to explain the distribution of numerous hydrocarbon seep in the Neogene deep water North Serayu and Banyumas basins.

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Inverted intra arc transtensional deepwater basin in West – Central Java border: New interpretation of basin evolution and its implication to the petroleum system

This article, which has been presented AAPG Annual Conference and Exhibition, New Orleans, Louisiana, April 2010 explains about tectonics of a Tertiary deepwater intra‐arc basin that experienced inversion by thrust faults. Oil seeps along this area may indicate distribution of source rock. The expelled and migrated hydrocarbon could reach in to potential traps and accumulated in reservoirs in these basins. The tectonics and paleogeographic reconstructions of this basin are expected to reveal the characteristics of petroleum systems.

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Exploration Challenges and Opportunities in Deep Water Makassar Strait Basins, Indonesia : Review of Carbonate Play Based on Sequence Stratigraphy and Seismic Characterization

Armandita_makassar_seg2011

This work that has been presented SEG Annual Meeting, September 18 – 23, 2011 , San Antonio, Texas overviews the petroleum system model in deepwater Makassar Strait basins. Unsuccessful of six expensive exploration wells in this area is a bit much influence to the activities of exploration in the South Makassar Basin. The authors explained exploration opportunities and challenges in an effort to discover hydrocarbons in the deep water Makassar Strait Basins.

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Structural Reactivation and its Implication on Exploration Play: Case Study of JS-1 Ridge

Maulin_2012
This work has been presented at INDONESIAN PETROLEUM ASSOCIATION, Thirty-Sixth Annual Convention & Exhibition, May 2012. The authors of this article explained paleotectonic evaluation of the WMO area, and suggests another potential play other than Kujung Formation. Seismic interpretation with some attributes and also ant-track method are applied to strengthen the exploration concept. Another play that is quite interesting should be added to exploration in this area. Syn-rift play can be found in the western and eastern flank of JS-1 with Ngimbang Formation as the objective, whilst the post Kujung play can be emphasized on the flower structure pattern as an indication of wrench faulting. This wrench fault is responsible for tearing apart the Rancak and O.K. Formations during intra Miocene.

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