| Abstract |
Interference tests conducted at Ngawha geothermal field in New Zealand in October and November 1983 show that, as was apparent in previous tests, the field is rather poorly modelled by an infinite homogeneous reservoir. A bounded double porosity model is found to more successfully fit the observed pressure responses. Extensive interference testing of the highly permeable rhyolite formations overlying the western Broadlands geothermal field has indicated a previously unconfirmed division of the rhyolites into two groups, which are not in good communication with each other. |