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Assessment
1. The rotational speed of the spinner flowmeter is recorded in feet/seconds.
A .True
B .False ✔
2. In typical wells, unlike oil-water flow, gas-liquid flow is:
A .Steady-state
B .Transient
C .Turbulent and violent ✔
D .Laminar
3. The slippage velocity is defined as:
A .The velocity of the light phase relative to the heavy phase ✔
B .The velocity of the heavy phase relative to the light phase
C .The velocity of the total liquid phase relative to the gas
D .The true vertical velocity of the gas phase in the wellbore
4. In an oxygen activation measurement, a neutron generator emits a burst of neutrons which causes oxygen (present in water molecules) in the borehole to become activated. What type of radiation is emitted as the oxygen atoms return to their normal state?
A .Alpha rays
B .Beta rays
C .Gamma rays ✔
D .Positron particles
E .A, B, C and D
5. Which of the following techniques is used to estimate the velocity in an injection well using radioactive tracers?
A .Caliper
B .Velocity-shot ✔
C .Capillary tube
D .Downhole rotor
6. When the oil enters a deviated wellbore, it gravitates to the low side of the pipe and moves uphole along the pipe’s low side, carrying some water with it.
A .True
B .False ✔
7. In producing wells, volumetric flowrates downhole generally do not match those at the surface because of:
A .Reduction of pressure
B .Reduction of temperature
C .Gas present in the solution
D .A and C ✔
E .A, B and C
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