Title :
A case study in modeling a nuclear formation evaluation sub
Author_Institution :
Teleco Oilfield Services Inc., Meriden, CT, USA
Abstract :
The modeling efforts for the Modular Neutron Porosity (MNP) are described in detail. Constructing an accurate Monte Carlo representation of a complex nuclear formation evaluation tool requires careful matching of computed values to the results of laboratory experiments. The availability of only finite computing resources forces restraint in the step-by-step addition of complexity to the model. Once confidence in the model has been established, it can be used to predict tool response to many situations not reproducible in a laboratory. High temperatures, high pressures, and pore fluids composed of liquid-gas mixtures are typical of conditions encountered in real oil wells that are difficult to reproduce in a laboratory. Tool design and the effects of design modifications can also be evaluated efficiently using the model.<>
Keywords :
Monte Carlo methods; geophysical equipment; neutron detection and measurement; porosity; rocks; Modular Neutron Porosity; Monte Carlo representation; geophysical equipment; liquid-gas mixtures; nuclear formation evaluation sub; oil wells; pore fluids; pressures; temperatures; tool response; Computer aided software engineering; Detectors; Laboratories; Magnetic materials; Mechanical sensors; Monte Carlo methods; Neutrons; Packaging; Petroleum; Temperature;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.259095
