This system is best applied when the full production potential of a well is otherwise restricted because the well has very high productivity index (PI) and the high horsepower required to maximise production is beyond the range of available ESP motors or voltage supply.
Although ESP technology has improved dramatically over recent years and high horsepower ESP motors are available, limitations to using high horsepower single ESPs include:
- shaft torque
- Voltage and power availability limitations
- down-hole power concerns
- well bore restrictions
- equipment availability
By using standard medium horsepower ESPs in either parallel (dual Y-Tools) or series (dual can system), the operator can utilise standard off-the-shelf ESPs without upsizing topside switchboards, drives and transformers.
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