Drilling & Completions

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1. 3 characteristics of oil used in 1) low flammability 7. Big Rigs are used to drill: B) Deep Holes
OBMs: 2) free of aromatic A) Shallow Holes
compounds B) Deep Holes
3) acceptable viscosity C) Exploration in remote areas
D) None of the above
2. The advantage of a B) Operate over a wide
reciprocating mud pump is its range of pressures and flow 8. Block and tackle is comprised of: E) All of the above
ability to: rates by changing the A) Crown block
A) Remove cutting suspended diameters of liners and B) Traveling block
in the mud pistons C) Drilling line (cable)
B) Operate over a wide range D) A and B
of pressures and flow rates E) All of the above
by changing the diameters of
9. Causes of a Kick Drilling in an over-
liners and pistons
pressured formation
C) Remove contaminates
Not keeping hole full
from the mud
of mud
D) A and C
Swabbing
E) All of the above
Mud gradient reduces
3. All tubulars are specified by: D) Range, Weight per foot, due to contamination
A) Range, weight per foot, outside diameter, steel grade
10. Cement Permeameter determines
outside diameter, steel
PERMEABILITY of the
composition
set cement
B) Range, weight per foot,
inner diameter, steel grade 11. The choice of a particular drilling E) None of the above
C) Manufacturers name, fluid does not depend on:
weight per foot, outside A) Formation type
diameter, steel grade B) Formation pressure and
D) Range, Weight per foot, temperature
outside diameter, steel grade C) Environmental concerns
E)All of the above D) Drilling technique applied
E) None of the above
4. Autoclave determines the SOUNDNESS
of the cement 12. Conditions necessary for the E) A and C
development of abnormal
5. The average drilling cost A) Only a rough project cost
pressure in the formation are:
estimate provides: prediction
A) Mechanism causing formation
A) Only a rough project cost
pressure to change
prediction
B) The presence of permeable
B) Exact project cost
formation layer
prediction
C) The presence of impermeable
C) Both exact and rough cost
barrier
predictions
D) A and B
D) The expected rate of
E) A and C
penetration
E) None of the above 13. Consistometer determines
THICKENING RATE
6. Benefits of OBM: 1) Can drill through reactive
CHARACTERISTICS of
shale formations
slurry
2) Cools and lubricates the
bit
3) Effective against
corrosion
14. Conventional (overbalanced) A) The borehole pressure is 19. Filter Press determines
drilling means: greater than the formation FILTRATION RATE of
A) The borehole pressure is pressure slurry
greater than the formation
20. Four types of BOPs are: Pipe Ram
pressure
Shear Ram
B) The borehole pressure is
Blind Ram
lower than the formation
Annular Preventer
pressure
C) At the surface, the annulus 21. The hoisting system does not C) Rotary table
is closed during normal include:
drilling operation A) Draw works
D) All of the above B) Block and tackle
E) None of the above C) Rotary table
D) Derrick and substructure
15. The depth of the well C) A and B
E) None of the above
governs:
A) The lithology that must be 22. Hydrocyclones cannot be used A) Their cut off point
penetrated alone with weighted mud systems falls in the particle-size
B)The time required to because: range of barite
complete the well A) Their cut off point falls in the
C) A and B particle-size range of barite
D) None of the above B) They are very expensive
C) They are not effective in
16. Derrick legs experience C) Some of the loads
removing coarse particles
different levels of force carried by the derrick are
D) Their operating cost is very
because: not equally distributed to all
high
A) One of the legs is shorter the legs
E) None of the above
than the other legs
B) One of the legs is made of 23. Ideal mixture V2 = V1+Vb
special steel 24. Ideal mixture means: B) Mixture volume is
C) Some of the loads carried A) It is a mixture of ideal gases simply the sum of
by the derrick are not and liquids volumes of its
equally distributed to all the B) Mixture volume is simply the components
legs sum of volumes of its components
D) A and B C) Mixture volume is different of
E) All of the above volumes of its components
17. Duplex mud pumps: E)None of the above D) Mixture volume is lower than
A) are single-acting triplex the sum of volumes of its
B) Have constant horsepower components
regardless of the mud flow E) None of the above
rate 25. If the formation pressure is B) Abnormal pressure
C) are non-reciprocating greater than the normal pressure
type at a given depth, then it is called:
D) are denoted by the stroke A) Normal pressure
only B) Abnormal pressure
E)None of the above C) Subnormal pressure
18. Duplex pumps: E) None of the above D) All of the above
A) Are non-reciprocating E) None of the above
type
B) Are single-acting triplex
C) Are denoted by the stroke
only
D) Have constant horse
power
E) None of the above
26. In offshore drilling, the BOP is: B) Installed on 35. Mud density is measured using a: C) Mud
A) Installed on the wellhead located on the wellhead A) Rotational viscosimeter balance
the top of the riser pipe located on the B) Marsh funnel
B) Installed on the wellhead located on top of the casing C) Mud balance
the top of the casing at the sea bed at the sea bed D) Filter press
C) Not necessary E) None of the above
D) All of the above
36. Mud viscosity/rheology is measured using: B) Rotational
E) None of the above
A) Marsh funnel viscosimeter
27. A kick has been received while the bit C) Annular B) Rotational viscosimeter
was off the bottom. Which preventer Preventer C) Mud balance
can be used to lower the bit to the D) Filter press
bottom of the hole to perform kill E) None of the above
operation?
37. Name two mud filtration additives: 1)
A) Pipe Ram
Deflocculates
B) Shear Ram
2) Polymers
C) Annular Preventer
D) Blind Ram 38. One of the following equipment uses C)
E) None of the above centrifugal force to separate solids from Hydrocyclone
liquid:
28. Kick Volume is normally determined c)Pit gain
A) Shale shaker
from:
B) Settling pit
a)Shut in drill pipe pressure
C) Hydrocyclone
b)Density of the kick
D) Degasser
c)Pit gain
E) None of the above
d)Shut in casing Pressure
e)None of the above 39. One of the following is FALSE about e)None of the
different size nozzles installed on a drill above
29. List four major components of the 1) Swivel
bit:
Rotary System 2)Kelly
a)the pressure drops across the nozzle are
3)Kelly Bushing
the same
4)Rotary Table
b)the flow rates of the nozzles are the
30. List two examples of mud 1) Magnesium same
contaminating ions tested in chemical 2) Calcium c)the nozzle velocities are the same
analysis: d)A and C
e)None of the above
31. List two mud weighting agents: 1) Barite
2) Hematite 40. One of the following is not a function of E) None of
the drill collar: the above
32. The location of a well determines: E) All of the
A) Providing weight on the bit
A) Site preparing costs above
B) Preventing buckling
B) Rig moving cost
C) Providing pendulum effects
C) Daily operating cost of the drilling
D) Stabilizing the bit
operation
E) None of the above
D) A and C
E) All of the above 41. One of the following is not a function of E)None of the
the well control system: above
33. Measurement while drilling (MWD) E) All of the
A) Detecting a kick
systems provide real-time: above
B) Closing well at surface
A) Drillbit information
C) Allowing mud and kick fluid circulation
B) Bottom hole pressure
under pressure
C) Borehole inclination
D) Allowing pipe movement under
D) Azimuth
pressure
E) All of the above
E)None of the Above
34. Mud Balance determines slurry
DENSITY
42. One of the following is NOT common B) 48. One of the following is not the rig fluid C) Kelly
design criteria used for selecting a proper Manufacturer circulating system bushing
marine rig: name A) Mud pump
A) Water depth rating B) Mud pit
B) Manufacturer name C) Kelly bushing
C) Derrick and substructure capacity D) Shale shaker
D) Physical rig size and weight E) None of the above
E) Deck load capacity
49. One of the following items is not a E) None of the
43. One of the following is NOT contaminant D) Swivel component of the well control system: above
removal equipment used for reconditioning A) Mud flow indicator
return mud: B) Pit volume indicator
A) Shale shaker C) Hole fill-up indicator
B) Hydrocyclone D) Trip tanks
C) Decanting centrifuge E) None of the above
D) Swivel
50. One of the following materials is NOT a A) Barite
E) Degasser
viscosifier?
44. One of the following is NOT one of the E) None of A) Barite
principle components of the rig fluid the above B) Clay
circulating system: C) Bentonite
A) Mud pump D) Montmorillonite
B) Mud tank E) Xanthan gum
C) shale shaker
51. One of the followings fluids requires a c)bingham
D) Hydrocyclone
certain level of pressure gradient to plastic fluid
E) None of the above
induce flow in a pipe:
45. One of the following is NOT optimization a)Bit Nozzle a)power law fluid
parameters used for selecting bit nozzle Velocity b)newtonian fluid
size: c)bingham plastic fluid
a)Bit Nozzle Velocity d)all of the above
b)Bit hydraulics horse power e)none of the above
c)Turbulence occurs when the flow
52. One of the followings is not basic drilling E) None of the
becomes stable
rig components: above
d)All of the above
A) Power system
e)None of the above
B) Hoisting system
46. One of the following is NOT the function of B) Increase C) Fluid-circulating system
drilling fluid: the oil in D) Rotary system
A) Transport rock cuttings to the surface place E) None of the above
B) Increase the oil in place
53. One of the followings is true about b)Turbulence
C) Control formation pressure and prevent
turbulence increases
walls from caving
a)turbulence decreases pressure loss pressure loss
D) Transmit hydraulic power to drill motor,
b)Turbulence increases pressure loss
tools and bit
c)Turbulence occurs when the flow
E) None of the above
becomes stable
47. One of the following is not the function of b)Increase d)All of the above
drilling fluid: the reservoir e)None of the above
a)transport rock cuttings to the surface pressure
b)increase the reservoir pressure
c)control the formation pressure and
prevent walls from caving
d)transmit hydraulic power to drill motor,
tools, and bit
e)None of the above
54. The power efficiency of the A) Output power 60. Specimen molds & strength determines TENSILE and
block and tackle is: divided by input power testing machines COMPRESSIVE STRENGTH of
A) Output power divided by the cement
input power
61. Stabilizers run within the B) Minimize dynamic buckling
B) Output power multiplied by
bottom hole assembly to:
input power
A) Agitate the mud
C) Input power divided by output
B) Minimize dynamic
power
buckling
D) Input power multiplied by
C) To reduce buoyancy
output power
force
E) None of the above
D) All of the above
55. The principle function of the B) To provide a E) None of the above
block and tackle is: mechanical advantage
62. Standard API mud filtration 100 psi for 30 minutes
A) To rotate drillstring and permit easier
tests are carried out at:
B) To provide a mechanical handling of large loads
advantage and permit easier 63. Surface casing is installed D)B and C
handling of large loads to:
C) To circulate drilling mud in A) Prevent the bit from
wellbore formation fluid
D) To Prevent gas kick from B) Protect the integrity of
entering into the wellbore the hole
E)None of the above C) Protect deep fresh
ground water zone
56. The rate of shaft work provided B) The weight of the
D) B and C
by the rig power system is NOT engine
E) A and B
a function of:
A) Shaft rotational speed 64. Surge chamber is used after A) Dampen pressure surges
B) The weight of the engine the mud pump to: and flow pulsations
C) Torque provided by the A) Dampen pressure surges
system and flow pulsations
D) All of the above B) Remove solid particles
E)None of the above C) Prevent barite settling
D) Stabilize the draw works
57. Rock cutting mechanisms of drag A) Scraping and grinding
E) All of the above
bits are primarily by: actions
A) Scraping and grinding actions 65. 'tendency of differential C) Both overbalance pressure
B) Crushing action pressure sticking is high and mud cake thickness are
C) Wedging action when: high
D) Twisting action A) Overbalance pressure is
E) None of the above low
B) Mud cake thickness is low
58. Rotational Viscometer determines
C) Both overbalance
RHEOLOGICAL
pressure and mud cake
PROPERTIES of slurry
thickness are high
59. A short piece of pipe which is C) Crossover D) Annular diameter ratio is
used to connect two different low
diameter drillstring components E) None of the above
is called:
A) Centralizer
B) Jar
C) Crossover
D) Bottom hole assembly
E) None of the above
66. The tension in the fast line must be A)Below the nominal 75. Viscous properties of oil-based B) Oil-water ratio
kept: breaking strength mud is primarily controlled by:
A) Below the nominal breaking A) Viscosifier content
strength B) Oil-water ratio
B) Above the nominal breaking C) Barite content
strength D) The expected rate of
C) Exactly at the nominal breaking penetration
strength E) None of the above
D) All of the Above
76. Which of the following bits are D) Diamond bit
E)None of the above
recommended for drilling hard
67. Three factors for selecting drilling 1) Temperature formations in the deep section
fluids: 2) Pressure of the well?
3) Formation A) Roller bit with tungsten
carbide insert
68. Three major components of Water- 1) Clays
B) Roller bit with mill tooth
Based Muds: 2) Water
C) PDC bit
3) Chemical
D) Diamond bit
Additives
E) None of the above
69. The trip time primarily depends on: E) All of the above
77. Which of the following causes d)Replacement of some
A) Depth of the well
the montmorillonite structure to aluminum ions by the
B) Rig type and capabilities
have an excess of electron? magnesium ions in the
C) Drilling method
a)dehydration of clay particles crystal structure
D) A and C
b)Contamination of
E) All of the above
montmorillonite with illite
70. Turbidimeter determines the c)Mixing of montmorillonite with
FINENESS of the chlorite
cement d)Replacement of some of the
71. Two common drilling fluid 1) Clays aluminum ions by magnesium
viscosifiers: 2) Polymers ions in the crystal structure
e)Mixing of montmorillonite with
72. Two warning signs of a kick: 1) Mud flow at the
kaolinite
surface
2) Pit Volume 78. Which of the following fluid is B) Oil-based mud
increase recommended to drill reactive
shale zones?
73. Typical drilling organization doesn't D) Government
A) Water-based mud
include: agency
B) Oil-based mud
A) Drilling contractor
C) A and B
B) Operator
D) All of the above
C) Service companies
E) None of the above
D) Government agency
E) None of the above 79. Which of the following fluids is B) Oil-based mud
recommended to drill reactive
74. Unintentional flow of formation B) Kick
shale zones?
fluid into the wellbore is called:
A) Water-based mud
A) Kill fluid
B) Oil-based mud
B) Kick
C) A and B
C) Light mud
D) All of the above
D) A and C
E) None of the above
E) All of the above
80. Which of the following fluids is C) Foam 85. Which of the following is FALSE D)It can close off a tool
suitable for drilling low-pressure regarding the pipe ram? joint
depleted formations? A) It should have semi-circular
A) Water-based mud openings
B) Oil-based mud B) It must match the size of
C) Foam pipe currently in use
D) All of the above C) It cannot be used when the
E) None of the above drillstring is out of the hole
D) It can close of a tool-joint
81. Which of the following is FALSE B) Clay particles
E) None of the above
about clay? have very small
A) Clay particles are very small specific surface 86. Which of the following is NOT a C) Rotate the drillstring
B) Clay particles have very small function of the drum used in
specific surface drawworks?
C) Clay particles swell when mixed A) Transmit the torque required
with aqueous fluids for hoisting and braking
D) Good clays provide high viscosity B) Store the drilling line
and superior filtration control C) Rotate the drillstring
E) None of the above D) All of the above
E) None of the above
82. Which of the following is false about D) Bit for hard
diamond bits? formations should 87. Which of the following is not E) None of the above
A) They set in a tungsten carbide have many large the objective of drilling
matrix stones operations?
B) Under proper bit operation only A) Minimize the total well cost
the diamond contact the hole B) Drill a useable hole
bottom C) Minimize non-productive rig
C) Size and number of diamond downtime
used depends on the hardness of D) Drill well in a safe and
the formation to be drilled environmentally sound manner
D) Bit for hard formations should E) None of the above
have many large stones
88. Which of the following is TRUE B) It provides hoisting and
E)None of the above
about drawworks? braking power required to
83. Which of the following is FALSE A) They are always A) It helps the mud pump to raise and lower the
about drillships? anchored circulate the fluid in the drillstring
A) They are always anchored wellbore
B) They often use dynamic B) It provides hoisting and
positioning braking power required to raise
C) They are usually self-propelled and lower the drillstring
for rig moves C) It provides mechanical
D) They have high storage capacity power to the rotary table
E) None of the above D) A and C
E) None of the above
84. Which of the following is FALSE C) They can be used
about jack up rigs? to drill in deep 89. Which of the following items is C) Kelly Bushing
A) Usually they have 3 legs which waters (> 5000ft) an adapter that serves to
stand on the seabed connect the rotary table to the
B) Hull is lowered and legs raised Kelly?
for rig moves A) Swivel
C) They can be used to drill in deep B) Surge Chamber
waters (> 5000ft ) C) Kelly Bushing
D) BOP's are below the derrick D) Drawworks
cantilever E) None of the above
E) None of the above
90. Which of the following shows the C) Suction tank->mud 94. Which of the following A) Test duration is 15
correct mud circulation path during pump->drillstring- statements is FALSE about minutes
conventional drilling? >drillbit->annular standard fluid loss test?
A) Suction tank ->drillstring->mud space->shale shaker A) Test duration is 15 minutes
pump->annular space->Shale shaker B) Mud sample is pressurized
B) Suction tank->shale shaker->mud against 7.1 in^2 filter paper
pump->drillstring->drill bit->annular C) The test is conducted at
space 100 psi
C) Suction tank->mud pump- D) B and C
>drillstring->drillbit->annular space- E) None of the above
>shale shaker
95. Which of the following E) None of the above
D) Suction tank->drill bit->mud
statements is FALSE about
pump->drillstring->annular space-
the top-drive rotary system?
>shale shaker
A) It has built-in tongs to
E)None of the above
make and breakout pipes
91. Which of the following shows the C) Shale shaker > B) It uses a hydraulic motor to
correct order of solid removal desander > desilter > achieve rotation
equipment used when unweighted centrifuge C) It saves time as
mud is reconditioned? connections are made very
A) Centrifuge > shale shaker > fast and safer
desander > desilter D) Safer and easier for crew
B) Desilter > centrifuge > shale members to handle the drill
shaker > desander pipe
C) Shale shaker > desander > E) None of the above
desilter > centrifuge
96. Which of the following B) Short taper bits are
D) Desander > desilter > centrifuge
statements is false regarding difficult to clean
> shale shaker >
the shape of a diamond bit?
E) None of the above
A) Long taper diamond bits
92. Which of the following statements C) Water is are used to drill straight hole
is FALSE about oil-based mud? continuous phase with higher bit weight
A) Basic components are oil, water B) Short taper bits are difficult
and emulsifier to clean
B) Barite is added to increase its C) A more concave bit design
density is used for directional drilling
C) Water is continuous phase application
D) Viscosity is mainly controlled by D) All of the above
oil-water ratio E) None
E) None of the above
97. Which of the following C) They can stop the flow
93. Which of the following statements D) They can close on statements is incorrect about from the well if used when
is false about pipe ram? a kelly blind rams? drill string is in the hole
A) It has semicircular openings, A) They are designed to close
which match the diameter of the when no pipe is in the hole.
sizes for which they are designed B) They flatten drill pipe if
B) It size must match the size of accidentally used
pipe currently in use C) They can stop the flow
C) If more that one size of drill pipe from the well if used when
is in the hole, additional ram drill string is in the hole
preventers must be used in the BOP D) A and C
stack E) None of the above
D) They can close on a kelly
E)None of the above
98. Which of the following C)They can stop the flow 102. Which type of BOP is capable D) Annular preventer
statements is incorrect about from the well if used when closing on any piece of
blind rams? the drill string is in the equipment?
A) They are designed to close hole A) Pipe ram
when no pipe is in the hole B) Blind ram
B) They flatten drill pipe if C) Shear ram
accidentally used D) Annular preventer
C) They can stop the flow E) None of the above
from the well if used when the
103. Why is it important to control 1) To prevent blowouts
drill string is in the hole
drilling mud viscosity? 2) Carry cutting to the
D) A and C
surface
E)None of the Above
104. Why we use a rotating head? B) To close the well at the
99. Which of the following B) It is used in both
A) To apply torque of the drill surface while drilling under
statements is wrong regarding compressible and
pipe pressure
the mud telemetry system: incompressible fluids
B) To close the well at the
A) It transmits mud pulses
surface while drilling under
through the mud column
pressure
B) It is used in both
C) To pump mud
compressible and
D) To hoist the drillstring
incompressible fluids
E) None of the above
C) It requires clean mud
circulation without fiber
D) It's data transmission rate is
limited
E) None of the above
100. Which one of the following is D) It increases
correct about drilling cost? exponentially with well
A) It doesn't vary with well depth
depth
B) It decreases exponentially
with well depth
C) It is independent of the
well depth
D) It increases exponentially
with well depth
E) None of the above
101. Which one of the following is C) As the slip velocity
false regarding cuttings increases, the transport
transport ratio? ratio increases
A) For good hole cleaning, the
cuttings transport ratio must
be more than unity
B) When the particle slip-
velocity of zero, the cutting
transport ratio is unity
C) As the slip velocity
increases, the transport ratio
increases
D) As the slip velocity
decreases the concentration
of cuttings in the annulus
decreases
E) None of the above