Scale Inhibitor Squeezes Reduced ESP Failures
Baker Hughes treatments generated over $20 MillionA major producer operating in Western Siberia used electrical submersible pumps (ESP) to produce fluids from a number of wells. The ESPs increased the production rates, but the average run time was severely compromised by the formation of calcium carbonate scale in the pumps (Fig. 1). While the actual run times were dependent on the severity of the scaling of produced water, they were typically on the order of weeks. In some extreme cases, pump failures occurred in a matter of days from replacement and start up. The producer was highly motivated to extend the pump run life, and asked Baker Hughes for a suitable chemical services option.
After reviewing the situation, Baker Hughes and the customer agreed that a scale inhibitor squeeze application treatment would be the most cost effective strategy to increase the pump run time. In general, the squeeze process and inhibitor application is very well understood. To ensure successful squeeze treatments in a given field requires adequate preliminary design work.
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