RICHARDSON: DIFFUSION IN OIL-FIELD WATERS 



73 



GEOLOGY. — Note on the diffusion of sodium chloride in Appa- 

 lachian oil-field waters. 1 G. B. Richardson, Geological 

 Survey. 



During the summer of 1915, while working in the oil fields 

 of Butler County, Pennsylvania, I became interested in the 

 common occurrence of brines in oil wells. Samples of salt water 

 were collected and an analysis (A) of one was made in the Geo- 

 logical Survey laboratory. This analysis is compared with an- 

 other analysis (B) of deep-seated water from Washington County, 

 Pennsylvania, made by Steiger (see table 1). The wells from 



TABLE 1 



Analyses of Water from Deep Wells in Western Pennsylvania 



A. Water from "hundred-foot sand" at depth of 1359 feet, in well on farm of 

 Charles Hoffman, 5 miles northeast of Butler, Pennsylvania. Analysis by W. 

 B. Hicks and R. K. Bailey, U. S. Geological Survey. 



B. Water from Oriskany sandstone at depth of "6300" (6260?) feet, in well 

 of Peoples Natural Gas Company, 5 miles northwest of McDonald, Pennsylvania. 

 Analysis by George Steiger, U. S. Geological Survey. See U. S. Geol. Survey 

 Water-Supply Paper 364, p. 9, 1914. 



1 Published by permission of the Director, U. S. Geological Survey. 



