A Novel and Fast Simulation Strategy and Response Characteristics of Array Dielectric Dispersion Tool

Abstract

Summary Dielectric dispersion logging has been widely used in carbonate and tight oil or gas reservoir, new generations of dielectric logging tool has utilized wideband frequencies and multi-sensors to obtain formation parameters like resistivity, permittivity and water saturation. These measurements are rich in formation information with lots of logging curves generated, inversion and data processing of these measurements are complicated and time consuming. And we have studied the tool physics and spatial sensitivity of dielectric scanner which is developed at 2008 by Schlumberger. Since downhole environment of dielectric logging tool is a complicated three dimensional formation model, we have employed a novel and efficient simulation strategy based on formation model simplification method, a pseudo analytical method is applied to tackle this simplified problem. Response signal are calibrated into attenuation and phase shift, multiple response charts under different tool and formation conditions are simulated via this algorithm, and we have analysis the response characteristics of dielectric logging at different frequencies and different spacing through these charts. The simulation strategy is proved to be feasible and efficient, and it is a crucial for inversion and data processing of dielectric scanner measurements.