FATHIA, Dini (2019) Delineasi Potensi Hidrokarbon Nonkonvensional pada Cekungan Kutai, Kalimantan Timur Menggunakan Metode Magnetotellurik. Skripsi thesis, Universitas Jenderal Soedirman.

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Abstract

Data processing of magnetotelluric (MT) method is carried out to determine the potential of unconventional hydrocarbon regions in the Kutai basin, East Kalimantan. The potential for unconventional hydrocarbons in the form of shale gas is thought to come from black shale. Data processing aims to determine the type of rock based on the resistivity, and obtain a subsurface model. MT data processing has several processes which consist of fourier transform, robust processing, time series analysis, and crosspower selection (XPR). Meanwhile, 1D and 2D inversion is carried out to obtain the true resistivity and the profile of the resistivity distribution below the surface. In this research, the results of 2D MT inversion were also integrated with gravity method to determine the presence of black shale as a potential of unconventional hydrocarbon. Based on the data processing that has been carried out, the study area consists of four rock layers, that is sandstone, claystone, black shale, and slate. Black shale has a resistivity less than 4,6 Ωm. Meanwhile, sandstone and claystone have resistivity ranges from 3 Ωm to 36,4 Ωm. Based on the results of delineation, the potential for unconventional hydrocarbons or the presence of black shale began to be found at a depth of 2000 meters

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