L*8ley.J *^^^ [Dec. 15, 



Drilled dry. Cased at 378 feet. 



Strong flow of gas and oil when 3d S. S. was first struck, and the well 

 filled up nearly 300 feet with oil. 



Mud vein about 5 feet below top of 3d S. S. Sandrock rather ordinary 

 for the first 2o feet, below that point quite hard, and at the bottom gray 

 and dark. Softer than usual at 17 feet below the top. Salt water appeared 

 between 25 and 30 feet below the top of sand. 



Natural production, 75 barrels of oil and 100 barrels of salt water per 

 day. 



June 25th, 1873, the production was 25 barrels per day. 



Potter Well, No. \. 



February 3d, 1873. 

 Colorado District. 



Level of well mouth above ocean 



Wooden conductor to rock 25 feet. 25 



9 645^ to 670^ — 



3dS. S 47 " 717^ = 



? pocket. 12^" 730 = 



Drilled dry. Cased at 266 feet. 



3d S. S. good from top to bottom. Soft at 6 feet. Also from 12 to 15 

 feet, and extra quality at 42 feet. The lower part of the sand was softer 

 than the upper, which is not generally the case in this locality. 



The well filled up with fluid nearly 300 feet while drilling, but it was 

 mostly composed of salt water. 



Natural production, about 3 barrels of oil and 12 barrels of salt water 

 per day. 



Feb. 5th. Torpedoed 12 feet below top of 3d S. S. Bottom of hole filled 

 up one foot with sand. Result, 12 barrels of oil and 50 barrels of salt 

 water per day at first, declining to 6 barrels of oil in four days. 



Feb. 10th. Torpedoed 6 feet below top of sand. Well filled up with 

 sand 4 feet. Production slightly increased for a short time. 



March 12th. Treated the well with 10 volcanic burners. But slight im- 

 provement. 



April 2d. Torpedoed 21 feet below top of sand. No benefit. 



April 2l8t, 1873. Abandoned the well. 



Potter Well, No. 2. 



February 11th, 1873. 

 Colorado District. 



Well mouth above ocean.* 1550 



Wooden conductor 15 feet. 15 = 1535 



? 663 to 678 = 872 



3d8. S 50 " 728 — 822 



? pocket. 16 " 744 — 806 



Drilled dry. Cased at 264 feet. 

 • Oil City Depot provisionally 995' -f P. tl. R. datum. 



