Measurement of flowing water salinity within or behind wellbore

Details Measurement of flowing water salinity within or behind wellbore Measurement of flowing water salinity within or behind wellbore

1980-03-03

1981-09-01

Willis, Davis L.

Radiant energy

Coded record and readers; invisible radiant energy type

G01V 500

Patent

active

042874157

ABSTRACT:
Water flowing within or behind a wellbore casing is irradiated with 14 MeV neutrons. Gamma radiation from the isotope nitrogen 16 induced from the O.sup.16 (n,p) N.sup.16 reaction and either the Na.sup.23 (n,.alpha.)F.sup.20 or the Cl.sup.37 (n,.alpha.)p.sup.34 reaction is measured in intensity and energy with detectors in a downhole sonde. From the gamma radiation measurements, the salinity of water flowing either within or behind wellbore casing may be determined.

REFERENCES:
patent: 3930154 (1975-12-01), Scott
patent: 4032778 (1977-06-01), Paap et al.
patent: 4032779 (1977-06-01), Arnold et al.
patent: 4032780 (1977-06-01), Paap et al.
patent: 4051368 (1977-09-01), Arnold et al.
patent: 4137452 (1979-01-01), Paap et al.
patent: 4151413 (1979-04-01), Arnold

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