Two ESP-systems installed during upgrading project

Oil Dynamics just recently installed and started-up two new Electric Submersible Pumps (ESP) systems near Hannover, Germany.
The oilfield operator decided to renew und upgrade its pumping equipment including 10 production wells.
Oil Dynamics said its modular technical concept will be able to cope with wide variations of reservoir pressure.
The tailor-designed equipment has been commissioned by Oil Dynamic’s Field Service, which also established a data connection to the client’s control system.
The first two of ten wells were upgraded from Progressing Cavity Pumps (PCP) to ESP.
“Comparing the same sizes, ESPs can deliver higher flowrates and heads, are more energy efficient and longer lasting than PCPs,” said Adam Waniek, the firms’ sales manager.
ESP installations have smaller footprints on surface and emit no noise, he added.
Unlike PCPs, an ESP does not need any drive shaft going through the wellhead nor mechanical seal, which makes ESP completions safer.
Both ESP-systems commissioned to the customer were equipped with pump sensors.
Those downhole sensors constantly deliver important values to the surface such as downhole pressure and temperature.
To power and control the ESPs, Oil Dynamics also built and commissioned new Variable Frequency Drives (VFD).
Also, the delivered VFDs were equipped with DC-link chokes for the intermediate circuit and du/dt sinusoidal wave filters on the output side.
These additional components improve the power quality on both sides of the VFD, extending the service life of the pump motor and neighbouring electrical systems.

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