The Application Of Fuzzy
Logic In Exploring For A Geothermal Resource (Philippine
Setting)
W.
P.C. Pioquinto, L.F. Bayrante and N.D. Salonga
PNOC-Energy Development Corporation, Merritt Road, Ft.
Bonifacio, Metro Manila 1201, Philippines
Abstract
Fuzzy
logic technique is applied in pre-evaluating the North Davao
Geothermal Prospect in the Philippines. A decision support
system is developed where sets of classes are collated and
compared using the assigned fuzzy membership values. Specific
grid points are evaluated using established knowledge-based
criteria. Based on qualitative and subjective judgement, fuzzy
membership values for each point are assigned to reflect its
degree of membership. These values are then processed using a
variety of operators like Fuzzy AND, Fuzzy OR, Fuzzy Algebraic
SUM/PRODUCT, and Fuzzy Gamma operation). The outputs of these
operators are the likely locations of prospective geothermal
areas. The technique is applied to an area of about 476 km.2
within the North Davao Geothermal Prospect (NDGP) located in
Compostela Valley province in southeastern Mindanao,
Philippines. The case study delineated an arbitrary high
potential area of about 50 km.2 where additional
geoscientific studies are recommended. This area of interest
includes the vicinities of Mt. Dasuran, Amacan-Gopod, NW to
Teresa-Mainit, Lake Leonard, Paloc and further north to
Kinasing-Tandic. |