Detection of impurities in fluid flowing in refinery pipeline or oil production operations using nuclear techniques
 Fluid in a pipeline or container at a refinery or at any of various petroleum producing operations is bombarded with neutrons, and high energy gamma rays resulting from capture of thermal neutrons are detected. The spectra of the detected gamma rays are then analyzed to determine the concentration of the element chlorine, which gives an indication of the presence and concentration of salt water in the fluid. The concentration of sulfur and the percentage gas in the fluid may be determined simultaneously with the concentration of chlorine. 
Texaco Inc.
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Irwin R. Hans J. Obie M. Harold E. Dan M.
Supernaw Paap Langford Peelman Arnold