Figure 28-5. Geochemical log of the Danzig No. 1 well, Rosenberg field, Fort Bend County, 

 Texas. This well is producing high gravity oil from 7736-43 feet (Horvitz). 



Mogilevski (1940) showed that certain strains of bacteria are able to 

 utilize gaseous hydrocarbons as their sole source of carbon and energy and are 

 particularly abundant where they overlie oil and gas fields. Some successes 

 have been reported by Subbota (1953), with this approach. In a review 

 of a book by Mogilevski, he states that out of 20 microbiological anomalies, 16 

 fields were proved by subsequent drilling. Successful application also has been 

 reported by Schwartz and Mueller (1948). 



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