Lesley.] 3G4 [Dec. 15. 



day. Punipcil in tliia way for some time and then gniduully increased in 

 oil until it produced 8 barrels per day. A decline then commenced both 

 in oil and salt water. On June 24th, 1873, it had settled back to 5 barrels 

 of oil per daj', and on August 6th, to 8 barrels per day. At this time it 

 was torpedoed again, and the next day was pumping at tlie rate of 8 barrels 

 of oil per daj'. 



On the 21st of August it had run down to 4 barrels per day, with aslight 

 increase in the volume of gas. From this time it gradually declined to 1 

 barrel per day where it remained for two or three mouths. 



Jan. 22. 1874. Flooded sandrock with benzine with no improvement either 

 to oil or gas. 



.Ian 28th. Put in one of Quick & Fertig's Injectors.* After the first two 

 injections the production rose to 2^ barrels, increasing to 5 barrels by the 

 end of one week from the time the injector was put in. Benzine was used 

 in the injector; and a gradual increase in production occurred until on July 

 34th, 1874, the well was pumping 17 barrels of oil per day. 



Potter Well. No. 5. 



April 4th, 1873. 

 Colorado District. . 



Level of well mouth above ocean 



Wooden conductor to rock 16 feet. 16 =^ 



? ' 655 to 671 = 



3dS. S 46 " 717 = 



? pocket. 11 " 728 = 



Drilled dry. Cased at 



3d S. S. good. Upper 35 feet white and soft, then 5 feet of gray and the 

 remaining 6 feet while but hard. 



Natural production 2 barrels of oil and 8 to 10 barrels of salt water per 

 day. 



April 8th. Torpedoed and brought the production up to 140 barrels of oil 

 per day, but it rapidly declined to 16 barrels, and on June 24th had still 

 further declined to 12 barrels per day. It never pumped much salt water. 



Potter Well, No. 6. 



June 4th, 1873. 

 Colorado District. 



Level of well mouth above ocean 



Wooden conductor to rock 18 feet. 18 == 



* The " injector" Is a patented device by which perforations made in tlie tub- 

 ing just aV)ove tlie pump chamber can be opened and closed at pleasure by tlie 

 ■'sucker rods." Benzine Is poured In at the top of the well and the pump kept 

 in motion until the oil in the well and tuhlnfi; is pumped out and benzine begins 

 to show at the delivery pipe. The tnbing is now full of benzine and the well Is 

 empty, or nearly so. On opening the apparatus in the injector, the 5(H) or 1000 

 feet of benzine in the tubing forces out strong Jets in all directions against the 

 walls of the well washing them down with force and giving more satisfactory 

 results than can be obtained by a simple "flooding" witli benzine. The pro- 

 cess may be repeated again and again until the desired effect is produced. 



