Produced fluids separation using a coalescer column

Produced fluids separation using a coalescer column

2007-05-01

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A coalescer column-a simple, inexpensive and environmentally friendly technology-successfully removed water from produced heavy oil emulsions. The laboratory study tested the use of the column and the effects of column length, column packing size, temperature, flow rate, demulsifier concentration and water addition. The use of the column improved basic sediment and water (BS&W) values after 4 hours of settling time by an average of 38%. Flowing the emulsions through the column at lower temperatures and much lower demulsifier concentrations matched the results of conventional treating. The results indicated that incorporating a coalescer column into a treatment facility allowed the reduction of demulsifier concentration from 250 ppm to 70 ppm, translating to an annual cost savings of $320,000 to $1,100,000 per battery. The column also promoted faster treating. Water droplets grew by as much as 34%, suggesting that treating time could be sped up by an average of 21% and as high as 80%.

Produced fluids separation using a coalescer column

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