Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Pulsed neutron well logging apparatus having means for determining background radiation

Patent ·
OSTI ID:5974962
A neutron generator in a well logging instrument is periodically pulsed and has an off period between pulses of 1000 microseconds. A neutron detector is gated on at intervals of 400 to 500, 550 to 650, and 700 to 800 microseconds, respectively, following the termination of each burst of fast neutrons. Circuitry is provided for determining the background radiation and for determining the macroscopic absorption. 3 claims.
Assignee:
Dresser Industries, Inc.
Patent Number(s):
US 4157469
OSTI ID:
5974962
Country of Publication:
United States
Language:
English

Similar Records

Pulsed neutron well logging apparatus having means for determining background radiation
Patent · Tue Jun 05 00:00:00 EDT 1979 · OSTI ID:5546930
Background subtraction system for pulsed neutron logging of earth boreholes
Patent · Tue Aug 09 00:00:00 EDT 1977 · OSTI ID:6801892
Method and apparatus for neutron induced gamma ray well logging
Patent · Tue May 01 00:00:00 EDT 1984 · OSTI ID:6455458

Related Subjects

02 PETROLEUM
020200 -- Petroleum-- Reserves
Geology
& Exploration
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600 -- Radiation Chemistry
440400* -- Well Logging Instrumentation
47 OTHER INSTRUMENTATION
BACKGROUND RADIATION
BARYONS
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
HADRONS
NEUTRON LOGGING
NEUTRON-NEUTRON LOGGING
NEUTRONS
NUCLEONS
PULSED NEUTRON TECHNIQUES
RADIATIONS
RADIOACTIVITY LOGGING
THERMAL NEUTRONS
WELL LOGGING
WELL LOGGING EQUIPMENT