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equipment

Total questions: 128

Worksheet time: 1hrs 4mins

Name
Class
Date
1.

Which parameter determines the efficiency of heat exchangers?

a)

Liquid color

b)

Heat transfer coefficient

c)

Viscosity only

d)

Pipeline diameter

e)

Ambient temperature

2.

What parameter defines pump head? 

a)

Cable length

b)

Sand concentration

c)

Pressure difference created by pump

d)

Temperature

e)

Sulfur content

3.


Which device is used to heat crude oil at field facilities?

a)

Venturi tube

b)

Plate filter

c)

Heater (furnace)

d)

Cyclone

e)

Absorber

4.


Which law is used in hydrostatics calculations?

a)

Newton’s cooling law

b)

Pascal’s law

c)

Ideal gas law

d)

Hooke’s law

e)

Coulomb’s law

5.


What is the primary purpose of a three-phase separator? 

a)

Separate oil and sand only

b)

Separate gas and water only

c)

Separate oil, gas, and water

d)

Remove H₂S

e)

Measure viscosity

6.


Settling rate of water droplets depends primarily on: 

a)

Oil color

b)

Tank material

c)

Droplet size

d)

Temperature of air

e)

Pipeline route

7.


What type of separator is most commonly used for gas separation at fields? 

a)

Plate

b)

Membrane

c)

Gravity separator

d)

Adsorption

e)

Vacuum

8.


What causes formation of oil–water emulsions in wells?

a)

High temperature only

b)

Chemical reactions

c)

Mechanical mixing and natural surfactants

d)

Water hardness

e)

Gas solubility

9.

Which safety requirement applies during ESP installation?

a)

Dry tubing only

b)

Work without grounding

c)

Avoid cable damage

d)

Open transformer covers

e)

Increase voltage manually

10.


What should be ensured before ESP startup? 

a)

No water in the well

b)

Excess gas supply

c)

Proper filling of protector and motor with oil

d)

Open tubing string

e)

Motor heating

11.


Which of the following is part of ESP surface equipment? 

a)

Gas separator

b)

Motor

c)

Control station

d)

Pump intake

e)

Diffuser

12.


Which parameter of oil affects separation efficiency most strongly?

a)

Color

b)

Odor

c)

Viscosity

d)

Sulfur smell

e)

Age of reservoir

13.


What is the main principle of hydrocyclone operation?

a)

Magnetic separation

b)

Centrifugal force

c)

Heat expansion

d)

Adsorption

e)

Vacuum filtration

14.


Which ESP component transfers torque to the pump? 

a)

Cable

b)

Tubing

c)

Shaft

d)

Protector housing

e)

Clamp

15.

Which parameter limits ESP motor operation?

a)

Sand size only

b)

Water pH only

c)

Maximum allowable temperature

d)

Gas density

e)

Tubing length

16.

What is the purpose of crude oil desalting?

a)

Increase density

b)

Remove hydrogen sulfide

c)

Reduce corrosion and protect equipment

d)

Cool the oil

e)

Raise viscosity

17.

What is the purpose of a demulsifier?

a)

To dissolve salts

b)

To reduce pressure

c)

To break oil–water emulsion

d)

To remove gas

e)

To heat crude oil

18.

What is the primary purpose of gas separation at wellhead facilities?

a)

Increase pressure in pipeline

b)

Improve pump efficiency

c)

Reduce pH

d)

Increase viscosity

e)

Add chemicals

19.


Which factor increases emulsion stability? 

a)

Low viscosity

b)

High temperature

c)

Natural surfactants in crude

d)

High salinity

e)

Decreased pressure

20.


What is the function of the ESP motor protector (hydroprotection)? 

a)

Increase pump speed

b)

Cool the cable

c)

Equalize pressures and protect motor

d)

Replace tubing

e)

Remove solids

21.


What does a gas separator in an ESP system prevent? 

a)

Motor overheating

b)

Excessive cable tension

c)

Gas lock in the pump

d)

Overpressure in tubing

e)

Sand deposition

22.


Before running ESP into the well, the motor is filled with: 

a)

Diesel

b)

Crude oil

c)

Dielectric oil

d)

Water

e)

Gasoline

23.


What is the main purpose of oil dehydration at field facilities?

a)

Increase oil viscosity

b)

Improve pipeline corrosion

c)

Meet commercial oil requirements

d)

Reduce gas–oil ratio

e)

Increase reservoir pressure

24.

Which force is responsible for separation of water droplets during settling?

a)

Magnetic force

b)

Friction force

c)

Gravity

d)

Elastic force

e)

Capillary force

25.


During ESP running, cable is attached to tubing using: 

a)

Welding

b)

Clamps and bands

c)

Adhesive tape

d)

Plastic glue

e)

Bolts

26.


Which geometric factor affects settling tank design?

a)

Roof shape

b)

Diameter and length

c)

Wall thickness only

d)

Color of coating

e)

Bolt size

27.

What is the maximum free gas content at ESP pump intake (without gas separator)?

a)

5%

b)

10%

c)

25%

d)

50%

e)

60%

28.

What type of pump is used in ESP installations?

a)

Reciprocating

b)

Jet

c)

Centrifugal

d)

Rotary screw

e)

Diaphragm

29.


What is the main function of an oil heater? 

a)

Reduce pressure

b)

Increase gas solubility

c)

Reduce viscosity for better separation

d)

Add surfactants

e)

Remove sulfur

30.

What method is used to remove salts during oil washing? 

a)

Dry cleaning

b)

Magnetic separation

c)

Dissolving salt in fresh water

d)

Centrifugal cracking

e)

Oxidation

31.


One technical atmosphere (at) approximately corresponds to what water column height? 

a)

1 m

b)

5 m

c)

10 m

d)

100 m

32.

After deep dehydration in the settling tank, the water content in oil is usually reduced to: 

a)

3–5 %

b)

1–2 %

c)

0.1–0.3 %

d)

0

33.


At the initial stage of field development, what is the main production from an oil well? 

a)

Oil and mineralized water.

b)

Oil and associated (petroleum) gas. 

c)

Only oil. 

d)

Only gas.

34.

Which statement correctly describes a water–oil emulsion (WOE) in this textbook?

a)

Mixture of gas and oil. 

b)

Mixture of gas and water. 

c)

Liquid phase of well production: mixture of oil, formation water and solids. 

d)

Only formation water.

35.


For produced water injected into the reservoir pressure maintenance system, the content of oil products and mechanical impurities must not exceed: 

a)

10 mg/dm³ each. 

b)

25 mg/dm³ each. 

c)

50 mg/dm³ each. 

d)

100 mg/dm³ each.

36.

Which unit is used in the scheme as the final device for oil desalting and additional dehydration using an electric field?

a)

Hydrocyclone.

b)

Centrifugal separator.

c)

Electrodehydrator. 

d)

Atmospheric heater. 

37.


According to the scheme on Figure 1.1 (Chapter 1), what is the purpose of drain (produced) water tanks before injection into the reservoir?

a)

Heating the water. 

b)

Settling to remove oil products and solids before injection. 

c)

Mixing with fresh water for drinking. 

d)

Increasing gas factor.

38.


According to GOST R 51858-2002, into how many classes is oil divided by mass fraction of sulfur?

a)

Two

b)

Three

c)

Four

d)

Five

39.


What is the gas factor of oil?

a)

Mass of oil per cubic meter of gas.

b)

Mass of gas dissolved in one cubic meter of oil. 

c)

Volume of gas dissolved in one tonne of oil. 

d)

Ratio of oil density to gas density. 

40.


What sulfur content corresponds to high-sulfur oil (class 3)?

a)

Up to 0.60 %.

b)

0.61–1.80 %.

c)

1.81–3.50 %. 

d)

Above 3.50 %.

41.


What is the typical water content in highly watered crude from late-stage Udmurtian fields before treatment? 

a)

Less than 1 %

b)

10–20 %

c)

40–50 %

d)

82–87 %

42.


In hydraulics, the relation between specific weight γ and density ρ of a fluid is:

a)

γ = ρ / g

b)

γ = ρ · g

c)

γ = 1/ρ

d)

γ = ρ · g²

43.

By density and fraction yield, oil is divided into types 0–4. Which type corresponds to heavy oil? 

a)

Type 0

b)

Type 1

c)

Type 2

d)

Type 3

44.

Which impurities most often accompany produced oil and negatively influence field preparation processes?

a)

Nitrogen and oxygen.

b)

Mechanical impurities and chlorides, H₂S, mercaptans. 

c)

Only carbon dioxide. 

d)

Only dissolved salts. 

45.


In the principal process scheme, what is the main purpose of preliminary dehydration of oil at the booster pump station (DNS)?

a)

Remove all salts.

b)

Reduce water content of oil before transportation to the central processing facility.

c)

Cool the oil. 

d)

Separate hydrogen sulfide only. 

46.


The compensator in ESP serves to:

a)

Cooling the motor

b)

Pressure equalization and oil volume compensation

c)

Gas separation

d)

Electric insulation

47.

What is the main purpose of the transformer in an ESP system?

a)

Increase the well flow

b)

Convert voltage for the motor

c)

Separate gas

d)

Measure current

48.


The stator of a screw pump is made of:

a)

Metal only

b)

Elastic polymer inside a steel tube

c)

Ceramic

d)

Glass

49.


The electric diaphragm pump uses what to move the diaphragm?

a)

Hydraulic drive

b)

Electric drive

c)

Mechanical rod

d)

Magnetic coupling

50.

The main function of the plunger pump in a rod installation is:

a)

Compress gas

b)

Lift liquid to the surface

c)

Measure well pressure

d)

Stabilize voltage

51.

Gas separators in ESP installations are used to:

a)

Increasing pump pressure

b)

Removing gas before it enters the pump

c)

Cooling the oil

d)

Cleaning the fluid from solids

52.


The plunger-diaphragm pump combines:

a)

Plunger and gear

b)

Plunger and diaphragm

c)

Screw and valve

d)

Piston and turbine

53.


The rod column in a sucker rod pump is designed for:

a)

Transmitting reciprocating motion

b)

Electric power transmission

c)

Separating gas

d)

Cooling fluid

54.


The ESP installation consists of:

a)

Surface transformer only

b)

Submersible pump, cable line, and transformer substation

c)

Only motor and separator

d)

Cables and sensors

55.


The rod pumping unit transfers motion from:

a)

Compressor to pump

b)

Pump to motor

c)

Balancer of the pumpjack to the plunger

d)

Motor to transformer

56.


The main advantage of jet pumps is:

a)

No moving parts

b)

High cost

c)

Large surface equipment

d)

High energy consumption

57.

What is the main purpose of ESP (Electric Submersible Pump) installations?

a)

For low-yield wells

b)

For high-yield, deep, and watered wells

c)

For gas lift wells

d)

For horizontal drilling

58.

What protects the electric motor from well fluid entry?

a)

Separator

b)

Compensator

c)

Protector

d)

Transformer

59.


Screw (progressive cavity) pumps are ideal for:

a)

Low-viscosity oil

b)

High-viscosity oil

c)

Gas wells

d)

Dry wells

60.


The working element of the centrifugal pump is:

a)

Rotor

b)

Impeller

c)

Valve

d)

Gear

61.


The purpose of the check valve in fountain equipment is:

a)

Pressure measurement.

b)

Sampling of liquid. 

c)

Allowing fluid flow in one direction only

d)

Temperature control

62.

Which main components are included in the fountain wellhead assembly?

a)

Tubing head and casing head.

b)

Pump and packer.

c)

Gas-lift valve and chamber.

d)

Compressor and separator.

63.

What is the energy source in gas-lift well operation?

a)

Oil energy

b)

Water energy

c)

Compressed gas energy

d)

Electric pump energy

64.

What is used to supply gas to the well in a compressorless gas-lift system? 

a)

Low-pressure gas

b)

High-pressure gas from gas fields

c)

Air from a compressor

d)

Steam-air mixture

65.


What is the main principle of the flowing (fountain) well operation method? 

a)

Lifting oil using a pump.

b)

Lifting oil with compressed gas energy.

c)

Natural flow due to reservoir pressure. 

d)

Lifting oil by hydraulic pressure. 

66.

Which equipment belongs to the underground part of a gas-lift installation?

a)

Gas-lift valves, well chambers, packer

b)

Compressor station and manifold

c)

Wellhead and master valve

d)

Gas distribution booth and separator

67.

What pressure must the gas-lift valve bellows chamber withstand during testing? 

a)

At least 6.0 MPa

b)

At least 10.0 MPa

c)

At least 12.5 MPa

d)

At least 25.0 MPa

68.

Who is allowed to work with gas-lift equipment?

a)

Only welding engineers

b)

Any personnel trained in occupational safety

c)

Persons familiar with the operating manual and safety instructions

d)

Workers with more than 5 years of experience

69.


Which test is mandatory for all well chambers before commissioning? 

a)

Radiographic inspection

b)

Hydraulic test

c)

Acoustic inspection

d)

Electrical test

70.


What is the maximum valve opening pressure allowed by the standard? 

a)

12.5 kPa

b)

34.5 kPa

c)

3.45 MPa

d)

345 kPa

71.

To which equipment does GOST 30767–2002 apply? 

a)

Surface equipment only

b)

Drilling rigs only

c)

Downhole equipment for gas lift operation

d)

Compressors and pumping stations

72.


What is the maximum valve actuation time according to the standard? 

a)

Not more than 10 s

b)

Not more than 20 s

c)

Not more than 30 s

d)

Not more than 60 s

73.


What does “ОТТМ-1” mean in the pipe designation?

a)

Casing pipe with triangular thread

b)

Casing pipe with trapezoidal thread and coupling

c)

Seamless smooth casing

d)

High-pressure welded pipe

74.


What does “ОТТГ-1” represent?

a)

Casing pipe with extended triangular thread

b)

Casing pipe with high-tightness trapezoidal thread and coupling

c)

Coupling-less smooth pipe

d)

Welded casing

75.


Which parameter is NOT included in the standard casing pipe designation?

a)

Type of connection

b)

Wall thickness

c)

Manufacturer’s name

d)

Steel strength group

76.

What does the code “ПД” indicate for a packer?

a)

Upward pressure

b)

Downward pressure

c)

Double-acting packer

d)

Hydraulic activation

77.


What does the letter “Я” mean in the packer type “ПД-Я-Г”?

a)

With anchor fixation

b)

Hydraulic type

c)

Cold-resistant

d)

Normal design

78.


What is the function of a casing head (wellhead housing)?

a)

To seal tubing threads

b)

To connect casing strings and isolate annular spaces

c)

To filter formation fluids

d)

To support pumps

79.


What is the main advantage of a trapezoidal thread compared to a triangular thread?

a)

Lower cost

b)

Simpler manufacturing

c)

Greater strength and sealing

d)

Lighter weight

80.

According to GOST 633-80, which of the following is a tubing type?

a)

НКТ-В

b)

ОТТМ

c)

ТБО-5

d)

КАУ

81.

Which group of oilfield equipment includes casing strings?

a)

II — Flowing well equipment

b)

I — Well equipment

c)

V — Reservoir pressure maintenance equipment

d)

VII — Gathering and transportation equipment

82.


What is the main purpose of casing strings?

a)

To lift production from the well

b)

To isolate and support the wellbore

c)

To regulate pressure at the wellhead

d)

To filter formation fluids

83.

Which casing connection type uses a conical sealing surface for tightness?

a)

ОТТМ-1

b)

ОТТГ-1

c)

ОГ1м

d)

Triangular-thread pipe

84.

What information must be stamped on each casing pipe?

a)

Manufacturer’s logo only

b)

Diameter, steel grade, wall thickness, batch number

c)

Only GOST number

d)

Pressure rating

85.

What does “К1” mean in the packer specification?

a)

Thermal resistant

b)

CO₂-resistant

c)

H₂S-resistant

d)

Standard type

86.

What does the designation “245-10-D GOST 632-80” mean?

a)

Casing pipe, diameter 245 mm, wall 10 mm, steel grade D

b)

Tubing, diameter 245 mm, pressure 10 MPa

c)

Pipe length 245 cm, wall 10 cm

d)

Aluminium casing

87.

What does the symbol “В” mean in a packer designation?

a)

High-pressure design

b)

Released by rotation

c)

Two-channel packer

d)

Corrosion-resistant

88.


What is the main function of a packer?

a)

Pressure measurement

b)

Zonal isolation and sealing

c)

Sand filtration

d)

Flow regulation

89.

What is the maximum working pressure for a coupling-less tubing string?

a)

25 MPa

b)

35 MPa

c)

50 MPa

d)

70 MPa

90.

Where are subsurface safety valves usually installed?

a)

At the wellhead

b)

In the tubing string above the packer

c)

On the surface pipeline

d)

In the casing shoe

91.


Which of the following is NOT a cause of thread leakage?

a)

Improper lubricant

b)

Thread contamination

c)

Controlled tightening

d)

Over-tightening

92.


Which type of packer is actuated by hydraulic pressure difference?

a)

Mechanical packer

b)

Hydraulic packer

c)

Anchor packer

d)

Expandable packer

93.

What does “КАУ-89-35” mean?

a)

Automatic shut-off valve, diameter 89 mm, pressure 35 MPa

b)

Wellhead-controlled safety valve, diameter 89 mm, pressure 35 MPa

c)

Hydraulic packer

d)

Aluminium tubing

94.

Which connection type provides the highest gas-tight sealing?

a)

Triangular thread

b)

ОТТМ

c)

ОТТГ

d)

Welded

95.


Which material is used for lightweight experimental casing LOT-240/10?

a)

Titanium

b)

Aluminium alloy D16T

c)

Stainless steel

d)

Carbon steel

96.


According to GOST 632-80, what type of connection is used for casing strings with diameters from 114 to 508 mm?

a)

Welded

b)

Threaded

c)

Flanged

d)

Coupling-less

97.

What does “НКТ” stand for?

a)

Pump-compressor tubing

b)

Casing pipe

c)

Filter screen

d)

Packer

98.


What does “ТБО-5” stand for?

a)

Seamless casing with uniform wall thickness

b)

Coupled casing pipe

c)

Coupling-less casing pipe with one thickened end

d)

Pipe with triangular thread

99.


In separators, mist extractors are used for:

a)

To measure pressure

b)

To remove liquid droplets from gas stream

c)

To increase gas velocity

d)

To separate water from oil

100.


Why is water separation important before crude oil export?

a)

To reduce density

b)

To prevent corrosion and scaling in pipelines 

c)

To stabilize pressure

d)

To increase viscosity

101.


In a three-phase separator, the phases obtained are:

a)

Oil and water only

b)

Oil, gas, and water

c)

Gas and solids only

d)

Oil and gas only

102.

What is the main function of an oil–gas separator?

a)

To measure oil production

b)

To separate oil, gas, and water 

c)

To compress produced gas

d)

To heat crude oil

103.


Which type of separator can separate oil, gas, and water simultaneously?

a)

Two-phase separator

b)

Three-phase separator

c)

Gas scrubber

d)

Electrostatic desalter

104.

A heater-treater is used to:

a)

To increase crude oil temperature and improve separation 

b)

To measure flow rate

c)

To compress produced gas

d)

To filter solids

105.


What does “emulsion breaking” mean in oil treatment?

a)

Mixing oil and water

b)

Separation of water dispersed in oil

c)

Gas compression

d)

Oil stabilization

106.

Which device removes fine liquid mist from gas after separation?

a)

Demister

b)

FWKO

c)

Heater-treater

d)

Tubing hanger

107.


Which factor can negatively affect oil–water separation?

a)

High temperature

b)

High viscosity

c)

Low salinity

d)

Proper residence time

108.

What is the purpose of a gas scrubber?

a)

To clean solids from oil

b)

To remove liquids and impurities from gas

c)

To compress gas

d)

To heat gas

109.


A free water knockout (FWKO) is mainly used for:

a)

To reduce gas–oil ratio

b)

To separate large amounts of water from oil

c)

To heat crude oil

d)

To measure water cut

110.


Which separation mechanism is most important in gravity separators?

a)

Centrifugal force

b)

Gravity settling

c)

Electric field

d)

Filtration

111.

Which of the following is NOT a common separator orientation?

a)

Horizontal

b)

Vertical

c)

Spherical

d)

Conical

112.

What is the main parameter used to design a separator?

a)

Gas–oil ratio

b)

Residence time 

c)

Oil viscosity

d)

Well depth

113.


What is the function of an electrostatic desalter?

a)

To reduce crude oil viscosity

b)

To remove dissolved salts from crude oil

c)

To separate associated gas

d)

To stabilize crude oil temperature

114.


Which pressure is usually monitored at the wellhead?

a)

Reservoir pressure only

b)

Wellhead pressure (tubing and annulus)

c)

Pump intake pressure

d)

Separator pressure

115.

What is the main function of the wellhead?

a)

To separate oil, gas, and water

b)

To provide a safe pressure seal at the surface of the well 

c)

To lift fluids from the reservoir

d)

To measure production rates

116.


A manifold in a production facility is used to:

a)

Compress gas

b)

Distribute or combine flow from multiple wells 

c)

Control sand production

d)

Remove water from crude oil

117.

Why are wellhead seals important?

a)

They prevent corrosion

b)

They provide pressure integrity and prevent leaks

c)

They measure flow rates

d)

They increase oil viscosity

118.


Which valve type is most commonly used in wellheads due to its reliability in high-pressure service?

a)

Globe valve

b)

Ball valve

c)

Gate valve

d)

Butterfly valve

119.

The tubing head is designed to:

a)

Control production rate

b)

Support the tubing string

c)

Remove gas from crude oil

d)

Measure well pressure

120.


Which part of the wellhead connects directly to the surface casing?

a)

Tubing head

b)

Casing head

c)

Christmas tree

d)

Choke manifold

121.


What is the typical function of a tubing hanger?

a)

To suspend the tubing string in the tubing head

b)


To close the well in emergencies

c)

To measure oil production

d)

To remove gas

122.

Which component supports and seals the casing strings?

a)

Tubing head

b)

Casing head

c)

Choke

d)

Manifold

123.


What is the function of the master valve on a Christmas tree?

a)

To regulate flow rate gradually

b)

To provide full shut-off of well production

c)

To separate oil and water

d)

To reduce gas–oil ratio

124.

A kill wing valve on a Christmas tree is primarily used for:

a)

Measuring pressure

b)

Pumping kill fluids into the well 

c)

Supporting the tubing string

d)

Monitoring temperature

125.


Which statement about a Christmas tree is correct?

a)

It is always installed below the wellhead

b)

It controls the flow of hydrocarbons from the well 

c)

It is used only for gas wells

d)

It measures the bubble point pressure

126.


What is the role of a safety valve?

a)

To monitor flow conditions

b)

To provide emergency shut-off 

c)

To maintain fluid temperature

d)

To separate phases of production

127.


What is the purpose of a choke in a wellhead assembly?

a)

To support the tubing string

b)

To reduce or control flow rate

c)

To measure fluid composition

d)

To remove sand from the flow

128.

The equipment assembly installed on top of the wellhead to control the flow is called:

a)

Packer

b)

Christmas tree 

c)

Tubing hanger

d)

Separator