Hidayah Nurul Hasanah Zen, Laila Wahyu Trimartanti, Zaenal Abidin, Agus Maman Abadi
Hydrocarbon prospective zone is a certain layer in a reservoir which is estimated producing oil. The geologists use the qualitative analysis method to find the prospect layers. The research used five variables modeled by three fuzzy membership functions and eight rules of fuzzy logic. The rules cause insensitiveness in the working system. This study therefore was conducted by modeling each of input variables into different models using 36 rules. It aims to determine the existence of hydrocarbon prospective zone through a qualitative analysis in a reservoir using fuzzy inference system with Mamdani method. The data were taken from well log data in reservoir “X”. There were some steps in doing this study, including fuzzification, inference system, and defuzzification. The result showed 99 prospect layers from 3000 layers in reservoir “X” with 97.7% of accuracy. © 2017, Systems Engineering Society of China and Springer-Verlag Berlin Heidelberg.
Department of Mathematics, Yogyakarta State University, Yogyakarta, Indonesia; STTN-BATAN, Yogyakarta, Indonesia
