Elektromotorsystem für ein elektrisches tauchpumpensystem, schutzsystem für ein elektrisches tauchpumpensystem und elektrisches tauchpumpensystem

Abstract

An electric motor system (100) for an electric submersible pump system (300) is disclosed. The electric motor system (100) comprises an electric motor (102) configured to operate an electric submersible pump of the electric submersible pump system (300), and a motor oil. The electric motor (102) comprises a base portion (104) defining a base space (106), a head portion (108) defining a head space (110), an interior space (112), a first line (114), a first port (116), a second port (118), a first valve (120), a first vent port (122) and a second vent port (124). The first line (114) is connected to an outside of the electric motor (102) through the first port (116). The first line (114) is connected to the interior space (112) through the second port (118). The interior space (112) is filled with the motor oil. The first valve (120) is configured to selectively block and unblock the first line (114). The first vent port (122) is configured to vent air from the interior space (112) to the outside of the electric motor (102). The second vent port (124) is configured to vent air from the head space (110) to the outside of the electric motor (102). The second vent port (124) is configured to be releasably connected to a compensator chamber (128). The compensator chamber (128) comprises a first chamber portion (130) filled with pressurized gas, a second chamber portion (132) filled with the motor oil, a piston (134) separating the first and second chamber portions (130, 132), a compensator chamber vent port (136), and a motor oil line (138). The compensator chamber vent port (136) is configured to vent air from the second chamber portion (132). The second chamber portion (132) is releasably connected to the second vent port (124) by means of the motor oil line (138). Further, a protector system (200) for an electric submersible pump system (300) and an electric submersible pump system (300) are disclosed.