Lesley.] ^>±o [Dec. 15, 



The third tiiii- f> burners were used, same results, leaving the well at the 

 end ot tiie treatment with an appreciable increase of gas, but no improve- 

 ment in the supply of oil. 

 A " scratcher " was also used in this well once, but with no benefit.* 

 By a series of e.xperiments in ca.sing and pumping, the salt water is sup- 

 jicsed to come into the well with the oil near the top of the 3d S. S. 



Colorado Well, No. 2. 



Located on Colorado Oil Tract, 15 rods south of No. 1, and at the 

 same altitude. 



Dry cased liole. Salt water in second sand. Cased below second sand. 

 Produced no oil and only about a quarter of a barrel of salt water per day. 



Sand rocks about the same thickness as in well No. 1, but the third sand 

 was of inferior quality, very little of it being white. 



Colorado Well, No. 3. 



August 20th, 1870. 



Located 13 rods, N. 780E., from No. 1. 



Level of well mouth above ocean level in feetf 1404 



Casing to rock 



? 



1st a. s 



? 



2d S. S 



? 



3d 8. S 



? pocket. 



Mud rein in 3d S. S. at 566 feet. 

 Cased at 475 feet. 



top 6' gray, with but little white. 



next 2' white and soft (good). 



next 20' white, but close. 



bottom 17' mixed gray and white. 



When first pumped it yielded only one barrel of oil per day and con- 

 tinued thus until a "scratcher" was used, which brought the production 

 up to 15 barrels for a few days. It then declined to 4 barrels when a three 

 pint nitro-glycerine torpedo was inserted 6 feet from tlie top of the third 

 S. 8. After this it produced 100 barrels per day for a short time. 



•A " scratcher'' is a round brush, about three feet long, made of .steel wire. 

 When it is to be used the tubing is drawn from the well, a few barrels of ben- 

 r.lneare poured in and the scratcher is attached to the sucker rods and run 

 Jown to the oil rock, where it is worked up and down for some time to scratch 

 or scrub the walls of the well and assist the benzine in the dislodgment of what- 

 ever may have accumulated there. 



t Oil City Depot provisionally 995 + P. R. R. datum. 



3d 8. S. 



