1876.] ^^1 fLesley, 



Third torpedo, Maj 8th, 1872, 7 feet lower than the second. Slight in- 

 crease in oil. 



Fourth torpedo, July 13th, 1872. 5 feet below top of 3d S. S., and 2 feet 

 above the point at which the first was exploded. Increased production 

 but did not pay for cost of torpedoing. 



Abandoned August 2, 1872. 



Colorado Well No. 7. 



Struck August 8th, 1871. 



Level of well mouth above ocean 



Drive pipe to rods 75 feet. 75 = 



? 190 to 265 = 



IstS. S 25 " 290 ^ 



? 79 " 369 = 



2dS. S 15 " 384 = 



? 96 " 470 = 



3dS. S 43 " 513 = 



? pocket. 8 " 521 = 



Wet hole. Cased at 386. 



Mud vein 12 feet below top of 3d S. S. Natural production 7 barrels per 

 day for a few days. 



Third sand poor. From marks of oil on the tubing while the well was 

 being pumped, it was inferred that the oil came in at a point in the sand- 

 rock just under the '" mud vein," say from 12 to 15 feet below the top of 

 the sand. 



A three pint nitro-glycerine torpedo was discharged at the point in the 

 sandrock where the oil appeared to come in. The production rose at once 

 to 40 barrels per day, but declined rapidly to 20 barrels and then slowly to 

 17 barrels, at which figures it remained for more than three months, when 

 it was flooded with water from well No. 10, then drilling wi'.hin 15 rods of 

 No. 7. When No. 10 was completed and tubed, and the water in it par- 

 tially exhausted, this well, No. 7, began to recover its oil, but not in so large 

 quantities as before it was flooded. From the time No. 10 began to pump 

 oil, in January 1872, until July of the same year. No. 7 slowly declined 

 in production and at the latter date was pumping only 2 barrels per day. 



It was then torpedoed again at the same ])oint as at first, after which 

 it yielded, for a short time, 25 barrels per day and then declined rapidly to 

 4 barrels. 



During the great "shut down movement of October, 1872," wlien all the 

 walking-beams in the Oil Regions were stopt for 30 days, this well lay idle. 

 But on starting up again in November, it produced 40 barrels pr-r day for 

 three days. Seven daj^s later it was producing 8 barrels, and at the end of 

 one month had settled to its old production before the "shut down," say 4 

 barrels. 



