2Committee on Radiation Source and Replacement. Radiation Source Use and Replacement[M]. Abbreviated Version. Washington: National Academies Press, 2008.
3Richard C Odom, et al. Pulsed Neutron Density Measurements: Modeling the Depth of Investigation and Cased- Hole Wellbore Uncertainties [C]// SPWLA 40th Annual Symp. ,1999, Paper JJ.
4Richard C Odom, et al. Improvements in a Through- Casing Pulsed-Neutron Density Log[C]// SPE 71742, SPE Annual Conferrence & Exhibition, New Orleans, Louisiana, 2000.
5M Evans, et al. A Sourceless Alternative to Conventional LWD Nuclear Logging[C]//SPE 62982, SPE Annual Conferrence & Exhibition, Dallas, TX, 2000.
6Badruzzaman A, et al. Multi-Sensor Through-Casing Density and Saturation Measurement Concepts with a Pulsed Neutron Source:A Modeling Assessment[C]// SPE 89884, SPE International Petroleum Conference in Mexico, Puebla, Mexico, 8-9 November, 2004.
7Jacobson L, et al. An Improved Formation Density Measurement Using PNC Tools[C]// SPE 90708, SPE International Petroleum Conference in Houston, Texas, U. S. A. , 2004.
8Weller G, Griffiths R, Stoller C, et al. A New Integrated LWD Platform Brings Next-generation Formation Evaluation Services[C]//the SPWLA 46th Annual Logging Symposium, New Orleans, Louisiana,June 26-29, 2005.
9Briesmeister J F. MCNPA General Monte Carlo N- Particle Transport Code [R]. Los Alamos: Los Alamos National Laboratory, 2000.
10Richard C Odom, et al. Log Examples with a Prototype Three-Detector Pulsed-Neutron SYstem for Measurement of Cased-Hole Neutron and Density Porosities [C]// SPE 71042, SPE International Petroleum Conference in Keystone, Colorado, 2001.
