Published April 10, 1979 | Version v1
Patent Metadata-only

Behind casing water volume flow rate measurement using gamma ray spectral degradation

Creators

Description

This invention describes an apparatus for detecting undesired flow of water in voids behind the casing of a producing well. High energy neutrons are used to activate oxygen 16 in the water and produce nitrogen 16 which decays with a half-life of 7.1 seconds. Gamma ray detectors are used to monitor the gamma rays (6 MeV) from decay of nitrogen 16 and hence establish the flow rate of water behind the casing. (OT)

Availability note (English)

Available from Micromedia Ltd., 165 Hotel de Ville, Hull, Quebec, Canada J8X 3X2.

Additional details

Publishing Information

Imprint Pagination
62 p.
IPC:
Int. Cl. G01V 5/00.
IPC
Int. Cl. G01V 5/00.
Patent number
CA patent document 1052478/A/

INIS

Country of Publication
Canada
Country of Input or Organization
Canada
INIS RN
12587833
Subject category
S58: GEOSCIENCES;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
BOREHOLES; CEMENTS; GAMMA SPECTRA; NEUTRON ACTIVATION ANALYSIS; NEUTRON-GAMMA LOGGING; OXYGEN; VOIDS; WATER
Descriptors DEC
ACTIVATION ANALYSIS; BUILDING MATERIALS; CAVITIES; CHEMICAL ANALYSIS; ELEMENTS; HYDROGEN COMPOUNDS; NEUTRON LOGGING; NONMETALS; OXYGEN COMPOUNDS; RADIOACTIVITY LOGGING; SPECTRA; WELL LOGGING