Nuclear SIG

Spring Meeting May 11
Nuclear 2020 Survey Results: Click for Final results


Radioactive Sources: Applications and Alternative Technologies: Consensus Study published by  National Academies of Sciences, Engineering, and Medicine. Washington D.C, August 2021.


IAEA Safety Standard on Radiation Safety in Well logging: 
Specific Safety Guide- SSG-57:

IAEA Safety Standard on Radiation Safety in the Use of Nuclear Gauges:
Specific Safety Guide
-SSG 58 :


Nuclear Logging in two major US government reports:

(i) US DHS report
(ii) US DOE Office of Spence Workshop Workshop on Basic Research Needs (BRN)  on Compact Accelerators for Security and Medicine (CASM) and associated report.

The report on US Department of Energy's scoping study on alternatives to radioactive logging tools, LLNL-TR-679101, has been released.
It can be found on the following link.

SPWLA Nuclear Logging SIG: An Introduction

Objective:  The purpose of the Nuclear Logging SIG is to be a focal point to advance the science, technology and application of nuclear measurements utilized for subsurface characterization and monitoring. See the Nuclear SIG By-laws document for details.

A Brief History: The Nuclear Logging SIG was established in 2000 by a group of oil industry nuclear experts led by a Coordination Committee, under the Log Characterization Consortium (LCC).  In 2012, like all SIGS, it was brought under the umbrella of the SPWLA as a Chapter-at-Large with its own By-Laws and Executive Committee, after the LCC was disbanded.  

Activities: Over the years, the Nuclear Logging SIG dealt with the following areas:

  • Carbon/Oxygen (C/O) logging tools and their interpretation challenges in Complex geometries and compositions
  • Early interpretation challenges for Nuclear Logging-while-drilling (LWD) measurements.
  • Development of a technical position on alternatives to chemical radiative sources used in well logging
  • Input by individual SIG members on radioactive source challenges to the National Academy of Science panel asked by US Congress for a report on industrial sources and their replacement (2007) and an Interagency Task Force (2010)
  • Written input to a Congressional Subcommittee, on potential effect of a reduction in the He3 inventory worldwide; He3 is used in neutron detectors.
  • Input on future of API Test Pits on University of Houston Campus
  • Prepared drafts  on density/PE and Neutron Standards -under review
  • A Catalog of nuclear Logging tools is being prepared

Nuclear Logging SIG is federal tax exempt under Section 501 (c) (6) .

Technical Documents (to view click on document below)

       1.   Units, Nomenclature, and Environmental Corrections for Pe and Density Measurements


Questions: Please contact

R. J. Radtke, Schlumberger ([email protected]; +1 281 285 8402 office, +1 281 546 4710 cell)

Ahmed Badruzzaman ([email protected]; +1 510 889 9427 office)

Executive committee:

Chairman: Ahmed Badruzzaman, Pacific Consultants and Engineers and U C Berkeley

Vice-Chairman of Technology: R. J., Radtke, Schlumberger
Secretary Dale Fitz: ExxonMobil
Treasurer: Cornelius Huiszoon: Schlumberger Pathfinder
SIG Webmaster: Weijun Guo : Halliburton

Executive Members:
Feyzi Inanc: Baker Hughes
Gordon Moake: Halliburton
Anton Nikitin: Shell
Richard Pemper: Weatherford

Adrian Zett: BP


By Laws (click on By Laws)


Nuclear SIG Meeting NOTES: Click on  links below

Minutes 11-10-21
(Adobe PDF File)
Minutes 6-16-19
(Adobe PDF File)
Minutes 10-29-18
(Adobe PDF File)
Meeting 10-29-2018
(Adobe PDF File)
Meeting 10-09-2014
(Adobe PDF File)
Minutes 10/12/2016
(Adobe PDF File)