Horizontal Derivative from Gravity Data as a Tool for Drilling Target Guide in Wayang Windu Geothermal Field, Indonesia
- Key words
- horizontal derivative, gravity, permeability, fracture, gradient, intrusion, drilling
- Location
- Wayang Windu, Indonesia; Java
- Conference
- World Geothermal Congress
- Year
- 2010
- Session
- 13. Geophysics
- Language
- English
- Paper number
- 1330
Full text
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Abstract
The density of the gravity survey points allows “horizontal derivative” filtering to be applied to the complete Bouguer anomaly (CBA) data. The horizontal derivative process produces maximum ridges over the contacts between different density body blocks. The image produced by the horizontal derivative algorithm shows some agreement to the known productive area which lies in the vicinity of the maxima of the horizontal derivative. The horizontal derivative maximum does not correspond well to the known fault pattern. It may possibly indicate the location of the margins of intrusive bodies or major volcanic facies changes.
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