Published 1986 | Version v1
Book Metadata-only

High resolution prompt (n γ) spectroscopy uring a down hole logging tool

Creators

  • 1. Nuclear Geophysics Section, BP Research Centre, Middlesex, England

Description

A down-hole logging tool is described utilising a 5 Ci 241Am-Be neutron source and intrinsic germanium gamma-ray detector. The tool was used to measure the prompt gamma-ray response from the irradiation of 4 well characterised coal samples. The correlation between the count-rate into the 2380 keV line arising from sulphur concentration as determined by 'chemical analysis' is described. A depression in the count rate into the sulphur peak of interest is modelled using the neutron transport code ANISN and compares well with measurement. The influence of borehole diameter and the presence of borehole fuild upon logging performance is assessed. (author)

Additional details

Publishing Information

Publisher
Risoe National Laboratory.
Imprint Place
Roskilde (Denmark)
ISBN
87-550-1218-3
Imprint Title
Papers accepted for presentation at the 7. international conference MTAA. Pt. 2
Imprint Pagination
748 p.
Journal Page Range
p. 1283-1289.

Conference

Title
7. international conference on modern trends in activation analysis.
Dates
23-27 Jun 1986.
Place
Copenhagen (Denmark).

INIS

Country of Publication
Denmark
Country of Input or Organization
Denmark
INIS RN
18006409
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
COAL; GAMMA SPECTROSCOPY; HIGH-PURITY GE DETECTORS; NEUTRON SOURCES; NEUTRON-GAMMA LOGGING; PROMPT GAMMA RADIATION; SULFUR; WELL LOGGING EQUIPMENT
Descriptors DEC
CARBONACEOUS MATERIALS; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY SOURCES; EQUIPMENT; FOSSIL FUELS; FUELS; GAMMA RADIATION; GE SEMICONDUCTOR DETECTORS; IONIZING RADIATIONS; MATERIALS; MEASURING INSTRUMENTS; NEUTRON LOGGING; NONMETALS; PARTICLE SOURCES; RADIATION DETECTORS; RADIATION SOURCES; RADIATIONS; RADIOACTIVITY LOGGING; SEMICONDUCTOR DETECTORS; SPECTROSCOPY; WELL LOGGING