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THE ROYAL SOCIETY OF CANi^^J^T 



resulted in a value of 0-62. These determinations were made from 

 comparative measurements of the rates of efïusion through a small 

 orifice of the gas and air under the same conditions of temperature 

 and pressure. 



The results for the seven days' blow-off test are given in Table I 

 below. They are computed for a temperature of 40°F (4-4°C), 

 which was the average temperature of the flowing gas, and an at- 

 mospheric pressure of 13-5 pounds per square inch (70 cms. Hg.) The 

 rates of flow per 24 hours are computed to the third significant figure. 



Table I. 



The above rates of flow are represented in the form of a curve 

 in Figure 2. The curve shows at a glance the rate of decrease in the 

 delivery of the well. The end portion of the curve gives an indication 

 that after flowing for seven days the well was gradually approaching 

 the state of a steady rate of flow. 



It was noticed during the seven days' blow-ofif test, that, after the 

 well had been flowing for about a day, salt water was delivered with 

 the gas. The occurrence of salt water in natural gas wells is not at 

 all exceptional, and the quantity in the present case was never very 

 considerable. 



To obtain some information on the rate at which the gas could 

 accumulate at the well on its being closed, the well, after blowing for 

 seven days, was kept shut for the following 14 days, with the excep- 

 tion of a few minutes at the end of each successive 24 hours in order 

 to allow measurements to be taken on the rate of flow. Also the 

 accumulated rock, or closed, pressure at the end of each 24 hours was 

 measured. 



The results of this series of measurements are given in Table II, 

 where the flows again are referred to a temperature of 40°F. and pres- 

 sure of 13-5 pounds per square inch. To obtain these rates of flow 

 the well was opened at a regular time for ten minutes each day. 

 During these periods there were slight, unsystematic, variations of 

 flow; the results given here are the average of all the measurements 

 taken within the ten-minute periods. 



