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http://dx.doi.org/10.7582/GGE.2012.15.4.227

A study on slim-hole density logging based on numerical simulation  

Ku, Bonjin (Department of Energy and Mineral Resources Engineering, Sejong University)
Nam, Myung Jin (Department of Energy and Mineral Resources Engineering, Sejong University)
Hwang, Seho (Geological Environmental Divion, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Geophysics and Geophysical Exploration / v.15, no.4, 2012 , pp. 227-234 More about this Journal
Abstract
In this study, we make simulation of density log using a Monte Carlo N-Particle (MCNP) algorithm to make an analysis on density logging under different borehole environments, since density logging is affected by various borehole conditions like borehole size, density of borehole fluid, thickness and type of casing, and so on. MCNP algorithm has been widely used for simulation of problems of nuclear particle transportation. In the simulation, we consider the specific configuration of a tool (Robertson Geologging Co. Ltd) that Korea institute of geoscience and mineral resources (KIGAM) has used. In order to measure accurate bulk density of a formation, it is essential to make a calibration and correction chart for the tool under considerations. Through numerical simulation, this study makes calibration plot of the density tool in material with several known bulk densities and with boreholes of several different diameters. In order to make correction charts for the density logging, we simulate and analyze measurements of density logging under different borehole conditions by considering borehole size, density of borehole fluid, and presence of casing.
Keywords
well logging; density logging; calibration chart; Monte Carlo N-Particle (MCNP) algorithm;
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Times Cited By KSCI : 1  (Citation Analysis)
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