Dual Detector Neutron Logging in Air Filled Air Boreholes

$2.00

Charles Flaum, Schlumberger

SPWLA TWENTY-FOURTH ANNUAL LOGGING SYMPOSIUM, JUNE 27-30, 1983

1983

Abstract

Air drilled boreholes have for a long time presented problems in forma- tion evaluation. Many logging tools exhibit every different behaviour in an air environment than in liquid. Neutron porosity logging has been a parti cularly bothersome problem, as the extremely successful density/neutron combination could not be utilized in air filled welts, without resorting to the sequential suite using the single detector SNP* tool.

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