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Title of Journal: Environ Earth Sci

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Abbravation: Environmental Earth Sciences

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Springer-Verlag

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DOI

10.1007/s12206-014-0102-x

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1866-6299

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Sensitivity study of pulsed neutrongamma saturati

Authors: Gunther Baumann Jan Henninges
Publish Date: 2012/05/16
Volume: 67, Issue: 2, Pages: 463-471
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Abstract

The injection of CO2 into depleted natural gas reservoirs has been proposed as a promising new technology for combining enhanced gas recovery and geological storage of CO2 During the injection application of suitable techniques for monitoring of the induced changes in the subsurface is required Observing the movement and the changes in saturation of the fluids contained in the reservoir and the confining strata is among the primary aims here It is shown that under conditions similar to the Altmark site Germany pulsed neutrongamma logging can be applied with limitations The pulsed neutrongamma method can be applied for detection and quantification of changes in brine saturation and water content whereas changes in the gas composition are below the detection limit A method to account for the effects of salt precipitation resulting from evaporation of residual brine is presented

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