1887

Abstract

Summary

Gamma spectral logging is a radioactive logging method that can measure the constituents of formation. This method of measuring the constituents of formation can be used not only for evaluation of unconventional reservoirs but also for evaluating the changes in water quality of groundwater and the interaction of aquifers with contaminated fluid and formation. In this study, two kinds of neutron source, three kinds of detectors and MCNP numerical modeling were used as basic studies for the equipment development of gamma spectrum. Gamma ray measurements were made using commercial products and self-developed systems. MCNP numerical modeling was applied to the design and performance prediction of sonde, and various rock blocks were used for the field test. Gamma spectra were measured in the neutron-capture gamma mode and some measured peaks included the effects of cylindrical pipes. Although the discrimination of the energy peaks of constituent elements in the measured gamma spectrum is not as easy as expected but the apparent components such as hydrogen in the water tank were well identified. It is expected that performance will be improved if it is continuously updated based on the test result up to the present.

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/content/papers/10.3997/2214-4609.201802651
2018-09-09
2024-04-18
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References

  1. Baker, P. E.
    [1957] Neutron capture gamma-ray spectra of earth formation, SPE-723 General, 210, 97–101.
    [Google Scholar]
  2. Muench, N. L., and Osoba, J.
    [1957] Identification of earth materials by induced gamma-ray spectral analysis, SPE-748 General, 210, 89–92.
    [Google Scholar]
  3. Lock, G. A., and Hoyer, W.
    [1974] Carbon-oxygen log: Use and interpretation, J. Pet. Tech., 1044–1054.
    [Google Scholar]
  4. Pemper, R., Sommer, A., Guo, P., Jacobi, D., Longo, J., Bliven, S., Rodriguez, E., Mendez, F., and Han, X.
    [2006] A new pulsed neutron sonde for derivation of formation lithology and mineralogy, 24th European Meeting of Environmental and Engineering Geophysics.
    [Google Scholar]
  5. Radtke, R. J., Lorente, M., Adolph, B., Berheide, M., Fricke, S., Grau, J., Herron, S., Horkowitz, J., Jorion, B., Madio, D., May, D., Miles, J., Perkins, L., Philip, O., Roscoe, B., Rose, D., and StollerC.
    [2012] A new capture and inelastic spectroscopy tool takes geochemical logging to the next level, 24th European Meeting of Environmental and Engineering Geophysics.
    [Google Scholar]
  6. Roscoe, B. A., and Grau, J.
    [1985] Response of the carbon/oxygen measurement for an inelastic gamma ray spectroscopy tool, 24th European Meeting of Environmental and Engineering Geophysics.
    [Google Scholar]
  7. Won, B., Hwnag, S., and Shin, K.
    , Park, C. J., Kim, J., and Hamm, S. [2014] Response characterization of slim-hole density sonde using Monte Carlo method, Geophysics and Geophysical Exploration, 17, 155–162.
    [Google Scholar]
  8. [2017] An analysis on response characteristics of a dual neutron logging using Monte Carlo simulation, J. Engineering Geology, 27, 429–438.
    [Google Scholar]
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