Abstrak 
Well log and Seismic Application in Delineating CBM Sweet Spot in Berau Basin, East Kalimantan
Ahmad Helman Hamdani, Diana Putri Hamdiana, Welly Ahmad Ramadhan
Universitas Padjadjaran, Padjadjaran International Physics Symposium 2013 (PIPS-2013) AIP Conf. Proc. 1554, 253-256 (2013); doi: 10.1063/1.4820333
Bahasa Inggris
Universitas Padjadjaran, Padjadjaran International Physics Symposium 2013 (PIPS-2013) AIP Conf. Proc. 1554, 253-256 (2013); doi: 10.1063/1.4820333
Berau Basin, Coalbed Methane, seismic, sweet spot, well log
The study area is situated in the northern part of Berau Basin Northeast of Kalimantan. In the area Sajau Formation is the main coal bearing formation. The Sajau Coal were range from Lignite to sub bituminous, low ash content, and low to high cleated coal. Different with the conventional reservoir, coalbed methane reservoirs have sweet spot that are a function of structural/cleat and stratigraphy of the coal seam. The seismic data provides excellent image of faults and stratigraphy of coal seams are very much essential in CBM exploration as delineating the CBM sweet spot. Well log and acoustic impedance inversion can be applied in such a way to provide added insight to the coal distribution and cleat directions in coalbed-methane reservoirs. In this technique the property of acoustic impedance is of much importance in identifying different rock formations, which are associated with coal, and it has been successfully implemented.