SPE Artificial Lift Systems 2

Question 1

In a sucker rod pumping system, what does the term 'fluid pound' refer to?

Accepted Answer

The pump plunger striking liquid with incomplete barrel fill

Answer

Fluid pound occurs when the pump barrel is not fully filled with liquid, causing the plunger to impact the fluid surface violently on the downstroke.

Question 2

Which artificial lift method is most suitable for high gas-liquid ratio (GLR) wells with deviated wellbores?

Accepted Answer

Plunger lift

Answer

Plunger lift is well-suited for high-GLR deviated wells because it uses the natural gas energy to lift a plunger slug of liquid to surface.

Question 3

What is the primary advantage of a gas-lift mandrel with a side-pocket configuration?

Accepted Answer

Ability to retrieve and replace valves without pulling the tubing string

Answer

Side-pocket mandrels allow gas-lift valves to be kicked over and retrieved by wireline without pulling the tubing, enabling workover-free valve changes.

Question 4

In ESP design, what does the term 'pump intake pressure' (PIP) represent?

Accepted Answer

Bottomhole flowing pressure at the pump suction inlet

Answer

Pump intake pressure (PIP) is the flowing bottomhole pressure measured at the ESP pump suction, which determines the available net positive suction head.

Question 5

For a progressive cavity pump (PCP), what determines the volumetric displacement per revolution?

Accepted Answer

Rotor eccentricity and stator pitch length

Answer

PCP displacement per revolution is determined by rotor eccentricity and stator pitch length, which define the cavity volume swept per turn.

(SPE) Society of Petroleum Engineers Certification Practice Test

(SPE) Society of Petroleum Engineers Certification Practice Test

SPE Artificial Lift Systems 2