1876,] ^^^ [Lesley. 



9 639 to 657 = 



3dS. 8 46 " 703 — 



? pocket. 13 " 715 = 



Drilled dry. Cased at 240 feet. 



3d 8. S. good to the depth of 32 feet, below that, finer and not so white. 



Oil came in near top of the sand and salt water 4 feet below the top. 



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

 day. 



June 6th. Torpedoed and increased the production to 150 barrels of oil 

 daily. Declined in fourteen days to 36 barrels daily. 



June 28th, 1875. Torpedoed 6 feet below top of 3d S. S. Result 3| barrels 

 per day. 



Potter Well, JVo. 7. 



July 11th, 1S73. 

 Colorado District. 



Level of well mouth above ocean 



Wooden conductor to rock 16 feet. 16 = 



? 629 to 645 = 



3dS. S 46 " 691 = 



? pocket. 13 " 704 = 



Drilled dry. Cased at 229 feet. 



3d S. S. very soft the first 12 feet, soft the next 14 feet and then harder 

 and not so good as the drill approached the bottom. The well filled up 

 with oil very fast after the sand was struck and while the first "bit " was 

 being run in it. 



Natural production 8 barrels per day. 



Jvily 14. Torpedoed (3 pint shell) 6^ feet below top of 3d S. S. Result, 

 a production of 100 barrels of oil per day. 



Nov. 20th, 1874. Production down to | of a barrel per day. Torpedoed 

 (giant powder) 7^ feet below top of sand. No increase in gas and very 

 little in oil. 



From July, 1876, until the 11th of October following, this Well produced 

 2 barrels per day, and then, without any treatment whatever, began to in- 

 crease. On Oct. 25th it was producing 5^ barrels, Nov. 10th, 6| barrels, 

 and Nov. 25th, 5j barrels. 



Fatter Well, JSfo. 8. 

 April 27th, 1876. 



Colorado District. 



Level of well mouth above ocean 



Wooden conductor to rock 15 feet. 15 ^ 



? 616 to 631 = 



3dS. S 47 " 678 = 



? pocket. 10 " 688 = 



Drilled dry. Cased at 225 feet. 



PROC. AMER. PHILOS. SOC. XVI. 98. 2t 



