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oa The Approach to Processing the Data of Induction Logging in Horizontal Wells in the Presence of the Fault
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Geomodel 2017, Sep 2017, Volume 2017, p.1 - 5
Abstract
This paper proposes the approach to data processing, which allows quite a fast determination of the fault location using the induction logging data obtained in horizontal wells. The proposed approach is based on the use of the 1-D inversion and inversion based on the use of 2.5-D or 3-D finite element modeling. At the first stage, we determine a zone which is characterized by the dramatic change of the geoelectrical model parameters obtained as a result of the 1-D inversion in the adjacent points on the logging tool motion trajectory. Then, in this zone, we perform the multidimensional inversion which results in determining the point of intersection of the fault line and trajectory of the tool motion. The possibilities of the proposed approach are shown with the use of synthetic data obtained by 2.5-D modeling for the geoelectrical model which is specific for the problems of induction logging in horizontal wells. We show that the location of the point of intersection of the fault line and trajectory of the tool motion is determined quite accurately, and the computational time, which is required for the multidimensional processing in a separate zone, is about a minute when we use a personal computer.
