ESP Health Check

Fig. 2 Health Check · gas across ESP stages Hover the stages · arrows pick a group —

Gas lock risk0%

Normal—

NormalWatchPre-lockGas lock

impellers stable near the gas limit head loss diffusers cut plane free gas liquid required discharge pressure

Gas fraction β by stageβ crit —

Health Check verdict

Stages at risk0/240—

Pump head——

Gas margin——

Gas lock forecast——

β at intake · 30 d actual + forecastd

Well conditionsinput

Gas fraction at intake β

Intake pressure Pin

Motor frequency

Gas growth rate from telemetry over the last 30 d

Demonstration model: a nominal stage of 0.42 atm at 50 Hz, a stage stability limit of 25 % free gas (rising with frequency), and a required discharge pressure of 95 atm. Gas is compressed stage by stage, so its fraction falls towards the discharge. In the product, these characteristics come from the pump datasheet and the bench database of performance curves under gas.