Cincinnati, Cleves, Heath (Newark), Lima, Oregon, and Toledo (three plants).

 Several legislative and regulatory changes affecting the State's. oil and
gas industry were enacted during the year. The Ohio Legislature passed laws
strengthening control of plugging of wells and modifying the bonding requirements
for Ohio-based operators. The State also enacted specific legislation governing
the subsurface disposal of industrial liquid waste. Permits were granted
to two steel companies and one oil refinery-chemical company for industrial
liquid-waste wells. Two of the wells were drilled but will not be operative
until the middle of 1968. Since March 1965, wells drilled below the 
top of the Clinton sandstone or an equivalent stratigraphic zone have been
required to be on 10-acre drilling units with specified minimum distances
from unit boundaries. Rules and regulations adopted on November 1, 1967,
specified spacing of all new wells with minimum distances from unit boundaries.
The size of the drilling units and the spacing vary with the depths of the
wells. Thus, Ohio now has spacing rules and regulations for every new well
drilled for oil and gas within the State. Other rules and regulations were
adopted to govern secondary-recovery operations.4 
 
 ~ American Association of Petroleum Geologists, Bulletin. V. 52, June 6,
1968, pp. 959-964. 
Table 12.—Oil and gas well drilling in 1967, by counties 
 
Proved 
County 
Oil 
field 
wells 
 
Exploratory 
wells — 
Total 
 
Gas 
Dry 
Oil 
Gas 
Dry Wells Footage 
 
 Source:American Association of Petroleum Geologists (AAPG).THE MINERAL INDUSTRY
OF OHIO 
637 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Adams 
Ashtabula 
Athens 
Belmont 
Carroll 
Champaign                     
Columbiana                     
Coshocton 
Crawford                       
Delaware                       
Erie_________________________ 
Fairfield                       
Fulton                         
Gallia                         
Guernsey                       
Hardin                        
Hocking                       
Holmes                        
Huron                         
Jefferson                       
Knox                         
Lawrence                       
Licking                        
Logan                         
Lorain                         
Mahoning                      
Marion                        
Medina                        
Meigs                         
Mercer                        
Monroe                        
Morgan                        
Muskingum                     
Noble                         
Ottawa                        
Perry                         
Portage                        
Putnam                        
Richland                       
Scioto                         
Seneca                         
Shelby                         
Stark                         
Summit                        
Tuscarawas                     
Vinton                        
Warren                        
Washington                     
Wayne -. 
Wyandot                      Total                    
  1 
 9 4 
 2 
 26 2 
 2 19 
 53 12 
  
2 
 4 1 
2 
 2 1 
 42 18 
  8 
 3 2 
7      
 25 27 
  8 
 91 29 
 1 7 
 1 4 
 2 
 6 8 
  
 6 9 
 26 13 
 26 20 
 3 1 
 94 33 
 2 29 
 2 
1       
 132 58 
  3 
 11 21 
 6 1 
 12 16 
 5 8 
 
6 
 
 
1 
1 
3 
 
 
23 
1 
- - - - 
2 
 
1 
 
5 
1 
---- 
1 
 
3 
 
 
1 
 
 
 
2 
 
 
 
 
 
 
 
1 
6 
 
 
 
 
 
 
8 
4 
 
 
 
14 
 
 
1 
1 
 
 
 
1~t 
 
 
1 
 
1 
 
2 
21 
 
1 
 
2 
 
 
1 
3 
-_-_ 
1 
 
61 
2 
1 
4 
4 
 
 
 
2 
1 
--_- 
 
13 
 
 
1 
 
1 
 
 
 
1 
 
 
1 
 
 
4 
1 
1 
 
 
1 
5 
2 
1 
2 
 
  
10 
1 
1 
---_ 
3 
1 
2 
1 
1 
 
---- 
 
 
 612 365 202 19 10 53 
 1 2,039 
 2 7,313 
 20 33,577 
 2 3,840 
 32 168,047 
 1 1,963 
 21 111,617 
 91 193,008 
 7 21,167 
 2 5,347 
 10 39,103 
 9 24,253 
 2 6,146 
 3 5,273 
 5 15,852 
 1 1,921 
 66 191,904 
 9 23,650 
 14 54,962 
 11 13,063 
 67 177,612 
 9 31,861 
 135 348,398 
 1 1,860 
 11 29,041 
 5 26,527 
 2 5,780 
 36 97,346 
 7 11,792 
 1 1,224 
 19 32,351 
 107 311,979 
 50 150,678 
 8 25,098 
 1 2,284 
 141 428,249 
 32 143,431 
 2 3,255 
 5 20,797 
 2 650 
 1 2,573 
 3 4,107 
 199 1,000,423 
 3 13,361 
 35 150065 
 9 15,311 
 2 4,891 
 43 72,454 
 14 47,413 
 2 2,905 
 1,261 4,087,761