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Artificial Lift Methods

Competency Statement:

Determine need for artificial lift. Evaluate and design system.

Learning Objective:

Upon completion of this module, the participant should be able to
  • Distinguish among the common methods of artificial lift and understand their advantages and limitations.
  • Select the most appropriate artificial lift method for a given set of well and economic conditions.
  • Perform basic surface and subsurface design calculations for gas lift and pump-assisted systems.
  • Monitor artificial lift performance .

Assignment Instruction:

Artificial lift is a means of reducing the backpressure on a well so that it can be produced at some desired rate. This may be accomplished by reducing the density of the wellbore fluid column, as is done in gas lift, or by using a pump to physically displace the fluids to the surface. In this Assignment, you will consider both types of artificial lift as you evaluate three scenarios: (1) a flowing well that has experienced a significant decline in production rate as reservoir pressure has decreased, (2) a well that is to be incorporated into an existing gas lift system, and (3) the installation of an Electrical Submersible Pump (ESP) at a water source well. Although these scenarios do not cover all of the artificial lift systems and combinations of methods that are currently available, they will give you a good idea of the issues that you must consider in designing such a system.