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these mechanically simple systems and can operate them
efficiently. Inexperienced personnel also can operate rod pumps
more effectively than other types of artificial lift. Most of these
systems have a high salvage value.

Figure 5.6 – Rod Pump

Because of its long history of successfully lifting well
fluids, the sucker-rod lift method is normally considered the first
choice for most onshore, and even some offshore, installations all
over the world. This method is limited by:
 Size of the casing, tubing, and downhole pump
 Strength and size of the various rods
 Speed with which they can be reciprocated
The largest downhole gravity separator is normally the
casing/tubing annulus. This area provides a maximum down

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