1876.] dbd [Lesley. 



The 3d S. S. was good all the way through. Uncommonly so, for the 

 first 20 feet, at which depth there was a good show of oil and gas. Below 

 25 feet the sand was somewhat harder and finer. 



Natural production less than one barrel of oil and 8 or 9 barrels of salt 

 water per day. 



Feb. 13th. Torpedoed 20 feet below top of 3d S. S. The well filled up 

 with sand 5 feet. Results, good. An increase both in oil and salt water. 

 After several days' delay in getting the well to work, it pumped when first 

 started up 16 barrels of oil and 100 barrels of salt water per day. 



March 18th. Treated it with 10 volcanics. Results, an increase of gas 

 and slight increase of oil. 



June 20th, 1873, it was pumping 9 barrels of oil and 18 barrels of salt 



water. 



Potter Well, No. 3. 



March 21st, 1873. 

 Colorado District. 



Well mouth above ocean* 1549 



Wooden conductor to rock 16 feet. 16 = 1533 



? 661 to 677 = 872 



3dS. S 50 " 727 = 822 



? pocket. 8 " 735 = 814 



Drilled dry. Cased at 270 feet. 



The 3d S. S. was good throughout its entire thickness, soft for the first 

 24 feet, then somewhat harder, but not very hard in any part. 



Natural production 2 barrels of oil and 6 or 8 barrels of salt water per 

 day. 



April 9th. Torpedoed (3 pint shell), production increased to 15 barrels ot 

 oil per day. Sustained the yield at this point for soma time and then 

 slowly declined to 8 barrels by the 20th of June following. . 



Potter Well No. 4. 



March 21st, 1873. 

 Colorado District. 



Level of well mouth above ocean 



Wooden conductor to rock 19 feet. 19 



? 637 to 656 ^ 



3dS. S 47 " 703 =r; 



9 pocket. lOi " 713^=: 



Drilled dry. Cased at 255 feet. 



3d S. S. very uneven. Upper 13 feet soft, next 3 feet very hard, then 3 

 or 4 feet of soft sand. Below this finer and more even in composition. 



Natural production 1 barrel of oil and 15 or 20 barrels of salt water per 

 day. 



March 26th. Torpedoed ^3 pint shell) 16 feet below top of 3d S. S. Re- 

 sults, an increase to 4 or 5 barrels of oil and lOJ barrels of salt water per 



* Oil City Depot provisionally 995' + P. R. R. datum. 



