Pressure equalizer in an electric submersible pump arrangement with pressure chamber, which has two pressure barriers

摘要

Borehole pumps arrangement witha rotary pump (15),an electric motor (21) for rotating the rotary pump (15), wherein the motor (21) has a motor chamber (89), in the engine lubricant (75) is contained,a between the motor (21) and the rotary pump (15) mounted to the pressure chamber (19), wherein the pressure chamber (19) a pressure chamber contains lubricant (58),a in the pressure chamber (19) mounted to the thrust bearing (27) for absorbing a pressure, by the operation of the rotary pump (15) is imposed on,at least one seal (49) for the prevention of the entry of pressure chamber lubricant (58) in the motor chamber (89),a housing (101), which at the motor (21), and a pressure chamber lubricant channel (77) for an ingress of lubricant pressure chamber (58) from the pressure chamber (19), an engine lubricant channel (125) for an ingress of engine lubricant (75) of the motor (21), and a drilling fluid inlet (105) for an ingress of has borehole fluid,a first barrier (105) in the housing (101), whose one side with pressure chamber lubricant..