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Line 24:
Line 24: − An electric submersible pump (ESP) consists of a centrifugal pump coupled to an electric motor. The pump and motor combination is run in the well on the bottom of the tubing string and is set below the operating fluid level in the well (Figure 1).+ − +
→Electric submersible pumps
==Electric submersible pumps==
==Electric submersible pumps==
[[file:artificial-lift_fig1.png|thumb|left|{{figure number|1.}}Electric submersible pump.<ref name=pt09r5>Conoco, Inc., 1990, Beam Pumping Engineering and Operating Manual, July.</ref>]]
[[file:artificial-lift_fig1.png|thumb|{{figure number|1}}Electric submersible pump. (From <ref name=pt09r5>Conoco, Inc., 1990, Beam Pumping Engineering and Operating Manual, July.</ref>.)]]
An electric submersible pump (ESP) consists of a centrifugal pump coupled to an electric motor. The pump and motor combination is run in the well on the bottom of the tubing string and is set below the operating fluid level in the well ([[:file:artificial-lift_fig1.png|Figure 1]]).
The electric motor powers a centrifugal pump that forces fluid into the pump up through the tubing and out at the surface. The electric motor is powered by an electric cable strapped to the side of the tubing string. Lift capacity for each pump is adjusted by changing the number of stages in the centrifugal pump and/or by changing the horsepower of the electric motor.
The electric motor powers a centrifugal pump that forces fluid into the pump up through the tubing and out at the surface. The electric motor is powered by an electric cable strapped to the side of the tubing string. Lift capacity for each pump is adjusted by changing the number of stages in the centrifugal pump and/or by changing the horsepower of the electric motor.