The Interpretation of Interference Tests in a Reservoir With Sealing and Partially Communicating Faults

Abstract

ABSTRACT The interference test has been extensively used in North Sea reservoirs to assess communication between wells and in this paper the effect of fault planes on interference test response is analysed. In the first part simple systems of intersecting and parallel sealing faults are analysed using the method of images. The matching of observed and model response to give the reservoir parameters kh/μ and ϕμct is best carried out using a method based on implicit function theory originally proposed by Cannon and Dogru. In the second part the effect of a partially sealing fault between the active well and the observation well is analysed using a two-dimensional single-phase numerical simulator. A set of log-log type curves giving pD as a function of td for various values of a fault transmissibility parameter is given.