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Title: WRRCTR No.80 Determining Porosity with Neutron Logs from Hawaiian Basaltic Aquifiers 
Author: Peterson, Frank L.; Sehgal, Man Mohan
Date: 1974-08
Publisher: Water Resources Research Center, University of Hawaii at Manoa
Citation: Peterson FL, Sehgal MM. 1974. Determinig porosity with neutron logs from Hawaiian basaltic aquifiers. Honolulu (HI): Water Resources Research Center, University of Hawaii at Manoa. WRRC technical report, 24.
Abstract: Neutron count data for calibration purposes were collected by neutron logging in 4 boreholes, and porosity data were determined from photo logs run on the same 4 boreholes. A neutron count-porosity calibration curve was constructed and was found to take the form of the logarithm of neutron count versus porosity. The calibration curve was calculated by linear regression analysis, utilizing empirical field data. The calibration curve is valid within the expressed 95 percent confidence intervals only for neutron logs from (1) basaltic formations, (2) uncased hole8, and (3) borehole diameters from 20.32 to 30.48 cm (8 to 12 in.).
Series/Report No.: WRRC Technical Reports
Sponsorship: OWRT Project No. A-034-HI, Grant Agreement No. 14-31-0001-3811 Supported in part by funds provided by the United States Department of the Interior as authorized under the Water Resources Act of 1964, Public Law 88-379.
Pages/Duration: viii + 38 pages
LC Subject Headings: Aquifers -- Hawaii.
Basalt -- Hawaii.
Radiation well logging.

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