Fig. 2From: Microbial enhanced heavy crude oil recovery through biodegradation using bacterial isolates from an Omani oil fieldThe clearance zones during well-assays for 10 days, for all the isolates after a 20, b 50 and c 70 h. The bacterial strains AS1–AS10 were grown in medium M2, strains AS11–AS13 in medium M4 and strains AS14–AS15 in medium M5Back to article page