Interference Tests at Ohaaki - a Search for a Linear Boundary

Abstract

In this paper an interference test conducted in April1984 at Ohaaki is analysed, and the presence of a single linear no-flow boundary is investigated. Three wells gave clear responses to the opening and closing of the source well. When each of these three responding wells is dealt with in isolation, and a fit of the infinite reservoir line-source solution is compared 'with a fit that includes a linear no-flow boundary, it is apparent that the fit with a linear boundary is closer. However, there is no location for the linear boundary that is consistent with all three responses. A compromise location for a linear boundary is found by fitting to all three responses at once. When this fit is compared with a compromise fit of the infinite reservoir line-source solution to all three responses, the fit with the boundary included is closer.