PETEOLEUM 559 



marked the limit. At present about 2,500 barrels is the daily 

 production. This field is divided into six pools, viz. : 1. Andover ; 

 2. Alma P. O. ; 3. Alma ; 4. Bolivar, Richburg and Wirt ; 

 5. Waugh and Porter ; 0. Clarksville and Niles. 



1. Andover. — This is situated in Greenwood, Steuben county, 

 and Andover, Allegany county. It was originally drilled for gas 

 to supply the neighboring towns, and all drilling has been done 

 by the Mutual Gas Company, of Andover. In all, 15 wells have 

 been finished since the field was opened in 1 8S9. In depth the 

 wells run from 8u0 feet in the valley to 1,300 feet on the hills, 

 with oil sand from 15 to 95 feet thick. The field gives a good 

 yield of both gas and oil, the rock pressure being 350 feet on the 

 average and a yield of one to eight barrels of oil per well per day. 

 At present all the wells but three are shut in, as this number is 

 sufficient to furnish the gas needed. 



2. Alma P. O. — This really belongs to the Alma pool, but as 

 there is a dry streak between them it has been treated by itself. 

 It is very small, covering only five lots in the southwest corner 

 of the town of Alma. The wells are few and run from 800 to 

 1,500 feet deep, with only 10 to 20 feet of oil sand. The yield of 



oil and gas is very small. 



3. Alma. — This pool is a long narrow strip running northeast 



and southwest and covering about 30 lots in the town of Alma. 

 There are about 250 producing wells, yielding about 125 barrels 

 of oil daily. In depth they run from 1,100 to 1,200 feet, with 15 

 to 20 feet of producing oil sand. The southwest edge is good gas 

 territory. 



4. Bolivar, Richburg and Wirt. — This is the oldest and 

 largest part of the Allegany field. It is situated in the towns of 

 Alma, Scio, Bolivar, Wirt, Genesee and Clarksville. The first 

 wells drilled were at Richburg, in about the center of the field. 

 The wells are deep, ranging from 1.400 to 1,800 feet. The Rich- 

 burg sand is from 25 to 50 feet thick. The yield now is only 

 a little more than a half barrel a day, but at first ran as high as 

 100 barrels a day per well. 



5. Waugh and Porter. — This pool covers seven lots lying in the 

 southern part of the town of Bolivar. It was opened in 1 882, and 

 it was here that the fourth or Waugh and Porter sand was dis- 

 covered. There are in all 30 wells, yielding about 40 barrels of 

 oil daily. In depth they run from 1,350 to 1,700 feet. The oil 



