MAGNETIC BASEMENT RELIEF MODELING USING THE MAGB_INV PROGRAM IN THE PASIR BASIN AREA, KALIMANTAN
Comprehensive interpretation for hydrocarbon exploration must begin with an understanding of the deep basement and proceed to the sediment section. A basin will have more potential for hydrocarbons if it has thick sediments. To find out the thickness of the sediment in a basin, it is necessary to...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/75106 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Comprehensive interpretation for hydrocarbon exploration must begin with an
understanding of the deep basement and proceed to the sediment section. A basin
will have more potential for hydrocarbons if it has thick sediments. To find out the
thickness of the sediment in a basin, it is necessary to find information on the
depth of the magnetic basement. Therefore, a geophysical survey is needed that
can provide information about the subsurface structure to identify the basin. One
of the geophysical surveys can be carried out using the magnetic method. This
method can provide information regarding the depth of the magnetic basement in
the basin, which is then useful when calculating sediment thickness to provide
additional information when conducting further exploration. The research area is
located southwest of the Makassar Strait and southeast of Kalimantan Island. This
area includes the Pasir Basin and the lower part of the Kutai Basin, which are
separated by the Paternoster Fault. The Pasir Basin is a sedimentary basin that is
also on the Paternoster Platform, which is a carbonate plain. This final project
research was carried out by processing magnetic anomaly data using magnetic
anomaly inversion modeling iteratively with the MATLAB-based MagB_Inv
program to obtain a magnetic basement relief model for the Pasir Basin area,
which will then be identified. In addition, bathymetry data for the Pasir Basin
area are also used as supporting data for calculating sediment thickness. The
depth of the magnetic basement relief in the Pasir Basin is in the range of 4.25 km
to 9.93 km, with an average depth of 6.99 km, and the model is in accordance with
existing geological and geophysical data. The results of the magnetic basement
relief modeling in the study area show that the Pasir Basin has two deep basins
that are good for further exploration because they have thicknesses of ±9.8 km
and ±9 km, respectively |
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