Elemental logging with a germanium spectrometer in the Continental Deep Drilling Project

Author

Schweitzer, J.S. ; Peterson, C.A. ; Draxler, J.K.

Author_Institution

Schlumberger-Doll Res., Ridgefield, CT, USA

Volume

40

Issue

4

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

920

Lastpage

923

Abstract

A gamma-ray spectrometer based on a germanium detector is used to obtain elemental concentration logs in three zones of the German Continental Deep Drilling Project pilot hole, with a primary goal of obtaining logs of elements that could not be obtained by commercial logging measurements. Delayed activation measurements provide elemental logs of Na, Mg, Mn, and V. The accuracy of the elemental concentrations is confirmed through comparisons with laboratory XRF (X-ray fluorescence) elemental analyses of cuttings and core samples from the well. These logging measurements provide reliable elemental concentrations that can contribute to the detailed analysis of rock mineral composition

Keywords

X-ray fluorescence analysis; gamma-ray spectrometers; geophysical prospecting; germanium; Continental Deep Drilling Project; Ge spectrometer; Mg; Mn; Na; V; X-ray fluorescence; commercial logging; core samples; cuttings; elemental concentration logs; gamma-ray spectrometer; laboratory XRF; pilot hole; rock mineral composition; Chemical elements; Delay; Drilling; Gamma ray detection; Gamma ray detectors; Geologic measurements; Geophysical measurements; Germanium; Neutrons; Spectroscopy;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.256685

Filename

256685