MEOR pilot sees encouraging results in Chinese oil field

Click here to enlarge imageMicrobial enhanced oil recovery (MEOR) tests in two wells indicated that the process could improve oil recovery from the Qinghai Seven Springs oil field in China (Fig. 1).Other EOR attempts had previously failed to increase production from the field that has relatively high-salinity formation water. Well Zhong 19, in the Qinghai oil field, was one well in which a microbial treatment improved oil production (Fig. 2).Click here to enlarge imageThe huff-and-puff pilot test involved two wells: Well Zhong 19 (Fig. 2) and Well 5-8. After the wells were shut in for 7 days, daily oil production from Well Zhong 19 increased from 2.5 to 4.1 tonnes/day (18-30 b/d). This...

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