292 KECOKD OF DEEP-WELL DRILLING FOR 1905. 
180G. Well near Farmington, Marion County. 
[Well begun July 11, 1905; completed September 13, 1905. Authority, Fayette County Gas Company, 
owner. No samples. Geologic correlations by R. W. Stone.] 
This skeleton log of a big gas well in the Mannington pool shows the depths to the various 
sands. The well started in the Permian (?) series of the Carboniferous and the pay sandsj 
are in the "Catskill" formation of the Devonian. The well consequently penetrated the 
Permian, Monongahela, Conemaugh, and Allegheny formations (Pennsylvanian) and 
Maunch Chunk and Pocono formations (Mississippian) of the Carboniferous and entered 
the Devonian. 
Record oj well No. 1 on Sarah A. Town farm, 2 miles north of Farmington. 
Feet. J 
Conductor 16 
Pennsylvanian : 
Mapletown (Sewickley) coal 371- 378 
Pittsburg coal 488- 499 
Dunkard sand '. 1, 115-1, 150 
Gas sand 1, 302-1, 345 
Salt sand 1, 420-1, 520 
Maunch Chunk: 
Pencil Cave 1, 730-1, 738 
Big Lime , 1, 738-1, 814 
Pocono : 
Big Injun sand; gas at 1,890 and 1,915 feet 1, 814-1, 93f. jj 
Sand 2, 250-2, 26Sii 
Fifty-foot sand; gas at 2,340 feet 2, 33,5-2, 35fo| 
Pocono or Catskill ( ?) : 
Gantz sand (?) 2, 378-2, 44*1 
Sand 2, 466-2, fl 
Stray sand 2, 480-2, m 
Gordon sand (?) 2, 495-2, 51 
Catskill: 
Fourth sand (?) 2, 698-2, 74 
Fifth sand; gas 2, 857-2, 87- 
Casing used, 515 feet of 10-inch; 1.478 feet of 8|-inch; 1,820 feet of 6f-inch; 2,8, c 
feet of 4-inch tubing. The big pay was in the Fif*Ai sand at 2,858 feet. When shut in 1: 
the 4-inch tubing it showed good, after blowing open four days, for a little more thf 
16,000,000 cubic feet in twenty-four hours. Initial rock pressure, 760 pounds per squa 
inch; minute pressure, 575 pounds. The other pays showed good for about 2,000,000 fe< 
"The Dunkard sand seems to be near the horizon of the Freeport, while the Fifty-foe 
Gantz, Gordon, and Fourth arc all misnamed, although the Fifth sand seems to be at : 
proper horizon These intervals do not fall in the proper place, as determined by t 
averages of many records in Pennsylvania. Furthermore, the Gantz has been describj 
as above the Fifty-foot rather than below it." — R. W. Stone. , 
1810. Well in Monongalia County. 
[W( 11 -completed in 1905. Authority, South Penn Oil Company, owner. No samples. Geologic corn Jj 
lions by R. W. Stone.] 
Oil has been found at greater depth in this well than in any other of which the Survey 1 
record. It is believed to be the deepest producing oil well in the world. The log gi 
little more than the depth and thickness of the various sands. The formations penetra 
range in age from Permian (?) to Devonian and should include those: Dunkard gr< i 
(Permian), Monongahela, Conemaugh, Allegheny, and Pottsville formations (IVnnsvl ' 
nian), Mauch Chunk, and Pocono, including Big Injun (Mississippian), and oil-beai ] 
sands, including those below the Fifty-foot, of "Catskill" age (Devonian). 
