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Total questions: 114

Worksheet time: 1hrs 2mins

Name
Class
Date
1.
a)

single stage separator

b)

two stage separator

c)

three stage separator

2.

Initial Separation Pressure is too high

a)

gas flashes

b)

light hydrocarbons from liquid oil become gas

c)

light components will stay in the
liquid

d)

gas doesnt separate, stay dissolved in oil

3.
a)

one stage separator

b)

two stage separator

c)

three stage separator

4.

Discharge pressure

a)

pressure at the outlet of a piece of equipment — such as a pump, compressor, or separator — where fluid is being discharged into the next stage of the process.

b)

rate of pressure change over distance — how pressure drops or changes along the flow path of a fluid

c)

pressure difference

5.

FWKO

a)

allow the
oil to be dumped to a treater or tank and the water to be dumped to
the water treating system

b)

designed to separate the
free water from the oil and emulsion, as well as separate gas from liquid

c)

compress the flash gas to sales

6.
a)

vertical FWKO

b)

Horizontal bulk treater

c)

Gunbarrel” with an internal “Gas Boot.

7.
a)

Three-stage compressor

b)

Water treating system

c)

Typical frame arrestor

8.
a)

Pressure valve

b)

Typical pressure/vacuum valve

c)

“Gunbarrel” with an internal “Gas Boot.”

9.
a)

Gunbarrel” with an internal “Gas Boot

b)

Horizontal bulk treater

c)

typical flame arrestor

10.
a)

Water treating system

b)

Three-stage compressor

c)

Gas Dehydration

11.
a)

Well test system

b)

Typical glycol reconcentrator

c)

Gas lift system

12.
a)

typical vertical two phase separator

b)

typical horizontal separator on an offshore platform

c)

Turbine-driven centrifugal compressor package

13.
a)

typical horizontal separator on an offshore platform showing the inlet side

b)

two phase separator at a land location

c)

Engine-driven

14.
a)

Turbine-driven centrifugal compressor package

b)

Engine-driven reciprocating compressor package

c)

A typical vertical two phase separator at a land location

15.
a)

Turbine-driven centrifugal compressor package

b)

Engine-driven reciprocating compressor package

16.
a)

A small glycol gas dehydration system

b)

A 5500-Bhp integral reciprocating compressor

c)

Turbine-driven centrifugal compressor package

17.
a)

A small glycol gas dehydration system

b)

The sixteen power cylinders

c)

box-like cooler

18.
a)

A typical vertical two phase separator at a land location

b)

A vertical heater-treater

c)

A horizontal heater-treater with two burners.

19.
a)

A typical horizontal separator on an offshore platform showing the inlet side

b)

A 5500-Bhp integral reciprocating compressor.

c)

A horizontal heater-treater with two burners

20.

A gunbarrel tank for treating oil.

a)

The emulsion enters the “gas boot” on top where gas is liberated and then drops into the tank through a specially designed “downcomer” and spreader system. The interface between oil and water is maintained by the external water leg attached to the right side of the tank. Gas from the tank goes through the inclined pipe to a vapor recovery compressor to be salvaged for fuel use.

b)

unit for custody transfer of oil. In the vertical loop on left are BS&W
probe and a sampler unit. The flow comes through a strainer with a gas eliminator on top
before passing through the meter. The meter contains devices for making temperature and
gravity corrections, for driving the sampler, and for integrating the meter output with that of
a meter prover (not shown).

c)

corrugated plate interceptor (CPI) used for treating water. Note that the top
plates are removable so that maintenance can be performed on the plates located internally
to the unit.

21.

A horizontal skimmer vessel

a)

for primary separation of oil from water with a
gas flotation unit for secondary treatment located in the foreground

b)

contains devices for making temperature and
gravity corrections, for driving the sampler, and for integrating the meter output with that of
a meter prover

c)

maintained by the
external water leg attached to the right side of the tank

22.

two-phase separators

a)

separate the liquid
stream into its crude oil and water components

b)

separate gas from
the total liquid stream

c)

gases evolve from the liquids and the well stream changes in
character

23.
a)

Two-Phase Oil and Gas Separation

b)

Three-Phase Oil and Gas Separation

c)

One-Phase Oil and Gas Separation

24.
a)

Double-barrel horizontal separator

b)

Cylindrical cyclone separator

c)

Spherical separator schematic

25.
a)

Cylindrical cyclone separator

b)

Cylindrical cyclone separator

c)

Cutaway view of a vertical two-phase separator

26.
a)

Single-barrel horizontal separator with a liquid “boot.”

b)

Horizontal double-barrel separator fitted with a baffle-type
mist extractor in the gravity settling section.

c)

Double-barrel horizontal separator

27.

Scrubber

a)

two-phase separator that is designed to recover liquids
carried over from the gas outlets of production separators or to catch
liquids condensed due to cooling or pressure drops.

b)

special
case of a two-phase gas-liquid separator that is designed to handle large
gas capacities and liquid slugs on a regular basis.

c)

prevents migration of fiberglass
fibers into the gas stream

28.

Slug Catchers

a)

special
case of a two-phase gas-liquid separator that is designed to handle large
gas capacities and liquid slugs on a regular basis

b)

dehydration equipment that would
lose efficiency, be damaged, or be destroyed if contaminated with liquid
hydrocarbons; and upstream of a vent or flare outlet

c)

fiberglass cylinder to the center
of the perforated metal tube

29.

Wave Breakers

a)

at low
velocities they will not work properly

b)

result from surges
of liquids entering the vessel

c)

use centrifugal force, rather than mechanical
agitation, to disengage the oil and gas

30.

How recources separated?

a)

Resources are separated by difference in specific gravity

b)
Resources are separated by type, function, or ownership.
c)
Resources are combined into a single category.
d)
Resources are separated by geographical location.
31.
a)

2 phase separator

b)

3 phase separator

c)

1 phase separator

32.
a)

1 phase separator

b)

2 phase separator

c)

3 phase separator

33.

phase equillibrium

a)

liquids and vapors reached P and T at which they can separate

b)

separate from the emulsion

34.
a)

Diverter plates

Mist extraction

Wave breakers

Weirs

b)

Wave breakers

Weirs

Diverter plates

Mist extraction

c)

Mist extraction

Wave breakers

Weirs

Diverter plates

35.

inlet diverter

a)

changes the direction of flow by
absorbing the momentum of the
liquid and allowing the liquid
and gas to separate

b)

operating and design pressures and temperatures

c)

simply stated, phase
equilibrium is a condition
where the liquids and vapors
have reached certain pressure
and temperature conditions at
which they can separate

36.

gravity settling section

a)

coalescing elements that
provide a large amount of
surface area used to coalesce
and remove the small droplets
of liquid

b)

velocity drops and small liquid
droplets that were entrained in
the gas and not separated by
the inlet diverter are separated
out by gravity and fall to the
gas-liquid interface.

c)

liquid collection section,
located at the bottom of the
vessel, provides the required
retention time necessary for any
entrained gas in the liquid to
escape to the gravity settling
section

37.

mist extractor

a)

section uses
coalescing elements that
provide a large amount of
surface area used to coalesce
and remove the small droplets
of liq

b)

small liquid
droplets that were entrained in
the gas and not separated by
the inlet diverter are separated
out by gravity and fall to the
gas-liq

c)

provides the required
retention time necessary for any
entrained gas in the liquid to
escape to the gravity settling
section

38.

Spherical Separators

a)

advantages in pressure
containment, their limited liquid surge
capacity and fabrication challenges make
them difficult to size and operate
effectively.

b)

The major benefits : no moving parts; low maintenance; compact, in terms of space
and weight; insensitive to motion; and low
cost when compared to conventional
separator technology.

c)

improve upon single-barrel designs
by separating gas and liquid chambers,
allowing better liquid surge capacity.
Liquids drain into the lower barrel while
gas flows through the upper chamber

39.

Centrifugal separators

a)


advantages in pressure containment, their limited liquid surge capacity and fabrication challenges make
them difficult to size and operate
effectively.

b)

major benefits: no moving parts; low maintenance; compact, in terms of space
and weight; insensitive to motion; and low
cost when compared to conventional
separator technology

c)

improve upon single-barrel designs by separating gas and liquid chambers, allowing better liquid surge capacity. Liquids drain into the lower barrel while
gas flows through the upper chamber

40.

What are the main functions of a heater treater in surface production? 3 answers

a)

Reducing H₂S levels in gas streams

b)

Dehydrating the crude oil

c)

Separation of oil, gas, and water

d)

Removal of salts from crude oil

e)

Raising the temperature to prevent wax formation

41.

Compare and contrast the use of vertical and horizontal two-phase separators. Which of the following are true statements?

a)

Horizontal separators provide better performance with foaming crude.

b)

Vertical separators handle sand and solids more effectively.

c)

Vertical separators are more compact and cost-effective.

d)

Vertical separators are better for high gas-liquid ratios.

e)

Horizontal separators are suitable for facilities with limited installation height.

42.

Vertical separator is recommended if the well stream contains sand

a)

True

b)

False

43.

What is the main benefit of increasing the number of separation stages after the initial separation?

a)

Reducing the amount of gas captured

b)

Stabilizing more light components into the liquid phase

c)

Increasing the temperature of the intermediate hydrocarbons

d)

Increasing the volume of the gas phase

e)

Decreasing the pressure of light components

44.

Density, specific volume and compressibility factor are extensive parameters

a)

True

b)

False

45.

At the inlet diverter section of the separator liquid and gas are separated due to ... /2 correct answers/

a)

Momentum reduction

b)

Agitation

c)

Coalescence

d)

Demulsification

e)

Density difference

46.

Which of two models used to describe reservoir fluid assume two components: stock tank oil and solution gas.

a)

Ideal oil

b)

Black oil

c)

Compressible oil

d)

Complex oil

e)

Compositional oil

47.

What mechanism of separation acts at the mist extractor section?

a)

Density difference

b)

Agitation

c)

Heating

d)

Coalescence

e)

Momentum reduction

48.
a)

Wet gas

b)

Black oil

c)

Retrograde gas condensate

d)

Volatile oil

49.
a)

Dry gas

b)

Wet gas

c)

Retrograde gas condensate

d)

Volatile oil

50.
a)

Cricodenbar

b)

Dew point line

c)

Cricodentherm

d)

Bubble point line

51.

type of reservoir fluid

a)

black oil

b)

volatile oil

c)

dry gas

d)

wet gas

52.

type of reservoir fluid

a)

volatile oil

b)

black oil

c)

retrograde gas

d)

wet gas

53.

type of reservoir fluid

a)

retrograde gas

b)

black oil

c)

volatile oil

d)

wet gas

54.

type of reservoir fluid

a)

black oil

b)

wet gas

c)

dry gas

d)

retrograde gas

55.

type of reservoir fluid

a)

dry gas

b)

wet gas

c)

retrograde gas

d)

volatile oil

56.

Identification of each of the five fluid types:

a)

GOR, gravity of the stock-tank liquid, color

b)

heavy, nonvolatile molecules

c)

gravity and pressure difference

d)

final settling and water

57.

Steps

a)

Separation

Stabilization

Gas treatment

Oil treatment

Water treatment

b)

Gas treatment

Oil treatment

Water treatment

Separation

Stabilization

c)

Separation

Stabilization

Gas treatment

Water treatment

Oil treatment

d)

Separation

Stabilization

Oil treatment

Water treatment

Gas treatment

58.

Remove sand and solids

a)

Corrugated Plate Interceptor (CPI)

b)

Flotation Units

c)

Hydrocyclones (Desanders)

d)

LACT Unit

59.

Removes oil by coalescing droplets

a)

Corrugated Plate Interceptor (CPI)

b)

Flotation Units

c)

Hydrocyclones (Desanders)

d)

Offshore platforms

60.

Inject gas bubbles that lift oil to the surface

a)

Corrugated Plate Interceptor (CPI)

b)

Flotation Units

c)

Hydrocyclones (Desanders)

d)

Artificial islands

61.

Uses floats or sensors

a)

Pressure control

b)

Level control

c)

Temperature control

d)

Instrument air systems

62.

Engine-driven compressor that uses pistons

a)

Reciprocating compressor

b)

Centrifugal compressor

c)

Sweetening equipment

d)

Stabilizator

63.

Turbine-driven compressor that uses spinning blades

a)

Reciprocating compressor

b)

Centrifugal compressor

c)

Sweetening equipment

d)

Heater-treater

64.

  • Heated by fire tubes, separates oil (top) and water (bottom), low flow rates

a)

Vertical heater-treater

b)

Horizontal heater-treater

c)

Gunbarrel Tanks

d)

Glycol Dehydrator

65.

LACT Unit

a)

Low Absorbing Crevice Tube

b)

Lease Automatic Custody Transfer

c)

Low Affected Cooling Tube

66.

Onshore facilities

a)

separators, heater-treaters, tank

b)

insulated vessels or enclosed buildings

c)

movable facilities

d)

facilities on barges

67.

Marsh/shallow areas

a)

insulated vessels or enclosed buildings

b)

facilities on barges

c)

integrated systems for oil, gas, and water

d)

custom designs for special conditions

68.

Artificial islands

a)

custom designs for special conditions

b)

insulated vessels or enclosed buildings

c)

): integrated systems for oil, gas, and water

d)

movable facilities

69.

Which sector in the oil and gas supply chain is primarily responsible for transforming crude oil into usable products like gasoline and diesel?

a)

Upstream

b)

Midstream

c)

Downstream

d)

Exploration

70.

Which of the following activities is part of the midstream sector in the oil and gas supply chain?

a)

Drilling wells

b)

Transporting crude oil and natural gas

c)

Refining petroleum products

d)

Marketing gasoline to consumers

71.

Double-barrel horizontal separators can handle high gas flow rates, but not large liquid slugs

a)

True

b)

False

72.

What are the two main gas liberation mechanisms in reservoir fluids? /2 correct answers/

a)

Hyrdaulic liberation

b)

Compressional liberation

c)

Thermal liberation

d)

Flash liberation

e)

Differential liberation

73.

At the mist extractor section of the separator following separation mechanism is activated

a)

Heating

b)

Agitation

c)

Demulsification

d)

Coalescense

e)

Momentum reduction

74.

What are the main functions of LACT unit in surface production? /2 correct answers/

a)

Measuring and sampling of crude to meet standards

b)

Separation of oil gas and water

c)

Monitor BS and W

d)

Dehydrating the crudde oil

e)

Rdeucing H2S in gas streams

75.

In what conditions would a vertical separator be preferred over a horizontal separator? /3 correct answers/

a)

Low gas-liquid ratio

b)

Low cost is a priority

c)

High gas oil ratio

d)

High sand and sediment content

e)

When space is limited

76.

Which of the following statements correctly describe oil behavior above the bubble point?

a)

Gas remains dissolved in oil

b)

Oil remains in single phase

c)

Oil shrinks as gas comes out of solution

d)

Oil is undersaturated

e)

Oil slightly expands as pressure drops

77.

What are the disadvantages of using spherical separators in oil field facilities? 3 correct answers/

a)

Too large for most applications

b)

Expensive to fabricate

c)

Difficult to size and operate

d)

Poor liquid-surge capacity

78.

What mechanisms of separation act at the liquid collection section? / 2 correct answers/

a)

Density difference

b)

Agitation

c)

Coalescense

d)

Momentum reduction

e)

Retention time

79.

_ properties are independent of the quantity of the material present . Density, specific volume, and compressibility factor are examples.

a)

Intensive

b)

Extensive

80.

Determine the type of displacement considering the composition of injected gas and reservoir fluid on the terniary diagram provided

a)

Immiscible

b)

Miscible - Oil stripping

c)

Miscible - Oil swelling

d)

Miscible

81.

Which operational issues aree associated with the mist extractor in 2 phase separators? 3 correct answers

a)

Gas leakage

b)

Temperature control failure

c)

Ineffective droplet capture at high flow rates

d)

Corrosion from acidic components

e)

Blockages due to solid components

82.

Give the definition for dew point pressure

a)

pressure when small liquid drop on euillibrium with gas

b)

formation pressure before oil development

c)

rock pressure

d)

normal pressure

83.
a)

2 stage 3 phase

b)

1 stage 3 phase

c)

1 stage 3 phase

d)

2 stage 2 phase

84.

Choose the correct definition to triple point

a)

The point at which all extensive properties of the gas and liquid are equal

b)

The point at which all intensive properties of the gas and liquid are equal

c)

The point at which solid, liquid and vapour co-exist under equilibrium conditions

d)

The point at which solid exists from the area where liquid exists

e)

The point at which solid exists from the area where vapour exists

85.

For a pure substance, the pressure at the bubble point and dew point is equal to the vapor pressure of the substance at the temperature of interest.

a)

True

b)

False

86.

The quanity of gas dissolved in an oil at reservoir conditions is called solution gas-oil ratio. Solution gas-oil ratio is the amount of gas that evolves from the oil as the oil is transported from the reservoir to surface conditions.

a)

True

b)

False

87.

The two-component mixture has a broad region in which two phases coexist and this region is called

a)

Saturation envelope

b)

Phase envelope

c)

Two phase envelope

d)

All of above

88.
a)

Pressure / Concentratiom

b)

Pressure/ Temperature

c)

Temperature / Pressure

89.

The term phase defines any homogeneous and physically distinct part of a system which is separated from other parts of the system by definite bounding surfaces

a)

True

b)

False

90.
a)

b)

c)

91.

A black oil is said to be undersaturated when a slight decrease in pressure will allow release of some gas.

a)

True

b)

False

92.

A sample of the reservoir liquid is placed in a laboratory cell. Pressure is adjusted to a value equal to or greater than initial reservoir pressure. Temperature is set at reservoir temperature. Pressure is reduced by increasing the volume in increments.

a)

Separator test

b)

Flash Vaporization

c)

Differential Vaporization

93.

This point represents the pressure and temperature at which solid, liquid, and gas coexist under

equilibrium conditions.

a)

Triple point

b)

Critical point

c)

Melting point

94.

The reduction in reservoir pressure below bubble- point pressure results in the evolution of gas in the pore spaces of the reservoir.

a)

True

b)

False

95.

The volume of oil that enters the stock tank at the surface is more than the volume of oil which flows into the wellbore from the reservoir.

a)

True

b)

False

96.

The pressure in a black oil reservoir at discovery will be either higher than the bubble-point pressure of the oil or equal to the bubble-point pressure. Discovery pressure is also known as initial reservoir pressure.

a)

True

b)

False

97.
a)

True

b)

False

98.
a)

b)

c)

d)

e)

Dehydrating the crude oil

99.
a)

True

b)

False

100.

In the PT diagram of a petroleum mixture, specify the marked item 2 correct answers

a)

Cricondenbar

b)

Dew point line

c)

Cricondentherm

d)

Bubble point line

101.

Unit of FVF of dry gas?

a)

rcf/STB

b)

scf/STB

c)

rcf/scf

d)

scf/rcf

102.

Initial separation

a)

Stabilizing more light components into the liquid phase

b)

Decreasing the pressure of light components

c)

Reducting the amount of gas captured

d)

Increasing the volume of the gas phase

103.

In inlet diverter liquid and gas separated due to

a)

Agitation

b)

Momentum reduction

c)

Density difference

d)

Coalescense

e)

Heating

104.

Vertical separator better for sand

a)

True

b)

False

105.

Advantages of horizontal separators 3 correct answers

a)

Better liquid settling

b)

Higher gas handling capacity

c)

Better for high solid content fluids

d)

Easier to transport

e)

More efficient in limited space

106.

control liquid levels in 2 phase separator

a)

liquid dump valve

b)

float mechanism

c)

control panel system

d)

level gauge

e)

pressure relief valve

107.

Sublimation line

a)

point at which solid exists from the area where vapour exists

b)

point at which all intensive properties of the gas and liquid are equal

c)

point at which all extensive properties of the gas and liquid are equal

d)

point at which solid exists from the area there liquid exists

108.

critical point

a)

intensive properties are equal

b)

extensive properties are equal

c)

equllibrium conditions

109.

horizontal separator-> failing in handling large liquid surges effectively, what design changes solve the problem?

a)

switching to double-barrel configuration

b)

using a vertical separator to handle surge volume more efficiently

c)

increasing the length of the separator

d)

installing additional sand jets to remove accumulated solids

110.

advantages of horixontal over vertical separator

a)

better liquid settling

b)

higher gas handling capacity

c)

easier to transport

d)

more efficient in limited space

e)

better for high solid content fluid

111.

when the P of a black oil reservoir drops below bubble point -> ?

a)

GOR increase

b)

oil viscosity increase

c)

oil FVF decrease

d)

API decrease

e)

GOR decrease

112.

phase diagram

a)

pressure x temperature

b)

pressure x volume

c)

pressure x saturation

d)

pressure x production

113.

phase diagram is graph of pressure plotted agains concentration showing the consitions under which the various phases will be present

a)

true

b)

false

114.

"saturated" used to mean "critical point"

a)

true

b)

false

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