STATE GEOLOGIST. DIYS 
to the Ohio Oil Company, which drilled on the Busby farm and secured a 
to-barrel well. From that time there has been slow but steady develop- 
ment. In July, 1901, the number of producers was approximately 75, of 
which 8 were gas wells. The companies operating in the territory at the 
date mentioned were the Ohio Oil Company, the Scott Oil Company and 
IF’. N. Donaldson. 
The oil and gas are derived from the Berea sand, which has a thick- 
ness of about 40 feet. The pay-rock lies near the bottom of the formation 
and has a thickness of from 3 to 12 feet. The oil wells have commonly 
started at from 8 to To barrels, and so are regarded small, but the yield is 
maintained with persistence. The oil has a gravity of 45 degrees B. An 
important part of the field is the gas territory, of which there are two parts, 
one along the southeast border of the territory and the other along the 
northwest margin. The daily production of these had not been measured 
when the territory was visited, but the closed pressure on the northwest 
side of the field was reported at 450 pounds, and that on the southeast at 
from 250 0 300 pounds per square inch. The production of these wells is 
piped to Jewett, Cadiz and Scio. : 
The wells all produce some salt-water in the Berea, and usually 
much in the Salt sand and Big Injun. The casing extends through the 
latter formation. ‘The strata in the principal part of the field dip to the 
northwest, and so lie on the western slope of an anticline. The Bricker and 
Snyder pools lie on the eastern slope of the same anticline. The gas wells 
on the northwest side of the field indicate that the rock is rising north- 
westward in that region. 
THE SCIO POOL. 
Location and Area.—The pool lies principally in North township, in- 
— Cluching itn wlolle Wr im joie GeCHIOS 4, ©, 2, 22, 24, iy By Ad, 2a, 30, 0 
and 35; beyond this it extends east into Rumley, occupying parts of sec- 
tions 13, 18, 19 and 24; at the extreme north the pool crosses into Carroll 
county, but this tract is so small that it is of very little importance. The 
producing territory extends northwest and southeast, and is triangular in 
shape, the base lying to the south. The maximum length of the field is 
about 5 miles, and the maximum width three miles. 
Discovery and Development.—The search for oil in this locality began 
30 years ago. As early as 1872 a number of derricks were standing along 
the edge of the village. One of these was on the Spiker farm, and was 
drilled by the old-fashioned spring pole method, an entire summer having 
been consumed in the work. These wells did not go beyond the Big Injun 
and so nothing but salt-water was secured. It is interesting to note that 
one of these wells was drilled by H. A. Snyder, who more than 25 years 
later organized the Scio Oil and Gas Company, which opened the pool. 
Equally interesting is it to report that the Spiker farm on which one of 
