RESERVOIR CHARACTERISTIC LOWER OLIGOCENE INTERVAL OF TARAKAN BASIN, NORTH KALIMANTAN
<p align="justify">Tarakan Basin is potentially containing hydrocarbon, but not all areas of this basin containing hydrocarbon. In this research area has been conducted exploration activity. From the data of LATIH-1 and BUNYUT-1 wells in area research are found oil and gas show at Lo...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/30638 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | <p align="justify">Tarakan Basin is potentially containing hydrocarbon, but not all areas of this basin containing hydrocarbon. In this research area has been conducted exploration activity. From the data of LATIH-1 and BUNYUT-1 wells in area research are found oil and gas show at Lower Oligocene interval. therefore conducted research about reservoir characteristic Lower Oligocene interval of Tarakan Basin, North Kalimantan. <br />
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Research workflow begin with well seismic tie, faults and horizons interpretation, electrofacies analysis, wells correlation, petrophysic analysis, gross depotional environment map and distribution of porosity quality. The purposes of this research are to identifed of structure pattern from the available data, Analyze reservoir characteristic Lower Oligocene interval from subsurface data, and to identified paleogeography of Lower Oligocene interval. <br />
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Based on the results of the Gross Depotional Environment map at the Lower Oligocene Interval there are three deposition environment namely distal barrier reef, deep shelf and slope. The wells in the study area only penetrated two facies that is distal barrier reef by Latih-1 well and NW Berau-1 well, and slope by Bunyut-1. <br />
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Reservoir in the research area based on reservoir quality order and facies, as follows: (1) Reservoir in the Deep shelf environment; (a) Reservoir 1 has a porosity value of 10-26% and a thickness of 500-1000 m, (b) Reservoir 2 has a porosity value of 9-22% and thickness of 600-900 m, (c) Reservoir 3 has a porosity value of 7-18% and thick 500-900 m, (d) Reservoir 5 has a porosity value of 5-16% and a thickness of 500-1000 m. (2) Reservoir in Distal barrier reef environment; Reservoir 4 has a porosity value of 4-23% and 400-1500 m thick. (3) Reservoir in Slope environment; Reservoir 6 has a porosity value of 4-17% and a thickness of 100-400 m.<p align="justify"> |
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