SPE Production and Operations 2

Question 1

What is the primary purpose of a wellhead choke in oil and gas production?

Accepted Answer

To control flow rate and maintain backpressure on the reservoir

Answer

To inject chemicals into the wellbore

Answer

To separate gas from liquid at surface

Answer

To measure cumulative oil production

Question 2

In artificial lift operations, which method uses a downhole pump driven by a surface prime mover via a sucker rod string?

Accepted Answer

Beam pump (rod pump)

Answer

Electric Submersible Pump (ESP)

Answer

Gas lift

Answer

Hydraulic jet pump

Question 3

What does the term 'skin factor' represent in reservoir engineering?

Accepted Answer

A dimensionless measure of near-wellbore damage or stimulation

Answer

The outer boundary condition of a reservoir

Answer

The permeability of the pay zone

Answer

The thickness of the productive interval

Question 4

During a production test, a stabilized flow period is followed by a shut-in period. This sequence describes which well test type?

Accepted Answer

Pressure buildup test

Answer

Drill stem test (DST)

Answer

Interference test

Answer

Step-rate test

Question 5

Which chemical treatment is typically used to prevent paraffin wax deposition in production tubing?

Accepted Answer

Pour point depressant

Answer

Scale inhibitor

Answer

Corrosion inhibitor

Answer

H2S scavenger

Question 6

In a three-phase separator, what force is primarily responsible for separating water from oil?

Accepted Answer

Gravitational settling due to density difference

Answer

Centrifugal force

Answer

Coalescing membrane filtration

Answer

Electrostatic attraction

Question 7

What is the function of a gas lift mandrel installed in production tubing?

Accepted Answer

To provide a ported housing for gas lift valves that inject lift gas into the tubing

Answer

To anchor the tubing to the casing

Answer

To act as a safety valve in case of surface blowout

Answer

To measure downhole pressure and temperature