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Investigating The Impact Of Extended Shut-In Periods On Microbiological Activity During Secondary Oil Recovery

Meet us at ISMOS, June 18th – 21st, Halifax, Nova Scotia.

We’re looking forward to attending ISMOS, the 7th International Symposium on Applied Microbiology and Molecular Biology in Oil Systems. Taking place from June 18th – 21st, in Halifax, Nova Scotia, ISMOS will focus on the emerging tools to help address the challenges presented by microbiological activity during secondary oil recovery.

Oilfield Souring The accurate forecasting of an oilfield’s propensity to sour due to microbiological activity is essential for cost-effective treatment. It is also something that Rawwater excels at, through the use of pressurised bioreactors and the DynamicTVS© souring forecasting model.

At ISMOS, we will be showcasing the findings of our recent study into the impact of extended shut-in periods in relation to microbiological sulphide production and nitrate reduction, in order to improve nitrate treatment calculations within a souring forecasting model.

Using pressurised, oil-saturated, sand-packed bioreactors, our study commenced with daily batch injection. After recording either stable microbiological sulphide production or nitrate reduction, the shut-in period of each of the test bioreactors was then doubled to two, four, eight, 16 and finally 32 days, to mimic the effect of real-world injection shutdowns.

Throughout the project, the rate of microbiological sulphide production and nitrate reduction was monitored to determine to what extent shut-in periods stimulated microbiological utilisation of sulfate and nitrate. Highly insightful, the findings have been used to further improve the nitrate treatment calculator for DynamicTVS©.

Meet us at ISMOS to discover more. Or email info@rawwater.com.