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DRILLING ENGINEERING 1 > Reviewer 3 for MT > Flashcards

Reviewer 3 for MT Flashcards

1
Q
  1. In a normally pressured formation, which
    of the following is typically true?

a. Pore pressure is greater than
hydrostatic pressure exerted by the
normal gradient

b. Pore pressure is less than
hydrostatic pressure exerted by the
normal gradient

c. Pore pressure equals hydrostatic
pressure exerted by the normal
gradient

d. Pore pressure varies randomly
exerted by the normal gradient

A

c. Pore pressure equals hydrostatic
pressure exerted by the normal
gradient

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2
Q
  1. What is the drilling mud window?

a. A transparent window on the drilling
rig

b. The range of mud weights where
drilling is safe and effective

c. A special tool for mud measurement

d. The depth of the drilling hole

A

b. The range of mud weights where
drilling is safe and effective

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3
Q
  1. What is the risk if the mud weight is
    below the lower limit of the drilling mud
    window?

a. Wellbore collapse
b. Loss of circulation
c. Kick
d. None of the above

A

c. Kick

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4
Q
  1. What is the Maximum Mud Weight
    (MMW)?

a. The heaviest drilling mud available
b. The mud weight required for drilling
in deep formations
c. The maximum allowable mud weight to prevent fracturing
d. The minimum mud weight for drilling
shale formations

A

c. The maximum allowable mud
weight to prevent fracturing

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5
Q
  1. What does MAASP stand for?

a. Maximum Annular Allowable Surface Pressure
b. Minimum Allowable Annular Surface Pressure
c. Maximum Allowable Annular
Surface Pressure
d. Minimum Annular Allowable Surface Pressure

A

c. Maximum Allowable Annular
Surface Pressure

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6
Q
  1. What is the purpose of conducting a leak
    off test during drilling operations?

a. To estimate the fracture initiation
pressure
b. To determine the drilling mud weight
c. To identify lost circulation zones
d. To calculate wellbore stability

A

a. To estimate the fracture initiation
pressure

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7
Q
  1. What happens if the mud weight exceeds
    the upper limit of the drilling mud window?

a. Increased risk of wellbore damage
b. Enhanced drilling efficiency
c. Improved drilling rate
d. None of the above

A

a. Increased risk of wellbore damage

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8
Q
  1. What is the primary function of the drilling mud in the drilling process?

a. Lubrication of the drill bit
b. Cooling the drill be
c. Transporting cuttings to the
surface
d. Maintaining wellbore stability

A

c. Transporting cuttings to the
surface

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9
Q
  1. How is the Maximum Mud Weight (MMW) typically estimated?

a. By trial and error during drilling
b. Using the Leak off Test
c. Using the Equivalent Circulating
Density (ECD) equation
d. MMW is a constant value for all
formations

A

b. Using the Leak off Test

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10
Q
  1. What is the primary objective of determining the Maximum Allowable
    Annular Surface Pressure (MAASP)?

a. To optimize drilling speed
b. To avoid stuck pipe situations
c. To prevent formation damage
d. To ensure well control during
drilling

A

d. To ensure well control during
drilling

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11
Q
  1. In which type of formation can the pore pressure be abnormally high?

a. Overpressured formation
b. Underpressured formation
c. Unconsolidated formation
d. Shale formation

A

a. Overpressured formation

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12
Q
  1. Which parameters directly affect the
    lower limit of the drilling mud window?

a. Formation pressure
b. Wellbore diameter
c. Drill be type
d. Mud viscosity

A

a. Formation pressure

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13
Q
  1. What is the consequence of exceeding
    the Maximum Mud Weight (MMW) in a
    formation?

a. Increased drilling speed
b. Formation fracturing
c. Decreased wellbore stability
d. Improved hole cleaning

A

b. Formation fracturing

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14
Q
  1. How does the ECD change as drilling
    fluid is pumped downhole during
    circulation?

a. ECD decreases
b. ECD remains constant
c. ECD increases
d. ECD depends on well depth

A

c. ECD increases

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15
Q
  1. What is the significance of the Maximum Allowable Annular Surface Pressure
    (MAASP) during well drilling?

a. To control wellbore temperature
b. To maintain hole cleaning efficiency
c. To prevent formation damage
d. To avoid wellbore collapse

A

d. To avoid wellbore collapse

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16
Q
  1. In an underpressured formation, what is the relationship between formation pore pressure and hydrostatic pressure?

a. Pore pressure equals hydrostatic
pressure (ito ata yung tama)

b. Pore pressure is less than
hydrostatic pressure

c. Pore pressure is greater than
hydrostatic pressure

d. No relationship exists

A

a. Pore pressure equals hydrostatic
pressure (ito ata yung tama)

or

b. Pore pressure is less than
hydrostatic pressure (not sure)

17
Q
  1. What is the primary mechanism
    responsible for overpressured formations?

a. Hydrocarbon degeneration
b. Temperature is too low
c. Undercompaction
d. Sandstone collapse

A

c. Undercompaction

18
Q
  1. What is an unexpected entry of
    formation fluids into the wellbore called?

a. Punch
b. Kick
c. Tension
d. None of the above

A

b. Kick

19
Q
  1. What technology is used to control the
    fluid invasion and to maintain a balance
    between borehole pressure and formation
    pressure?

a. Well control system
b. Reservoir management system
c. Well engineering system
d. None of the above

A

a. Well control system

20
Q
  1. What is the first line of defense in well control to ensure sufficient pressure in the wellbore?

a. Drilling fluid
b. Formation pressure
c. Abnormal pressure
d. None of the above

A

a. Drilling fluid

21
Q
  1. Which of the following causes pressure
    imbalance?

a. Low mud density
b. Low fluid level
c. Lost circulation
d. All of the above

A

d. All of the above

22
Q
  1. What normal industry value is used to maintain the overbalance pressure?

a. 200-300 psi
b. 100-200 psi
c. 100-500 psi
d. 300-500 psi

A

c. 100-500 psi

23
Q
  1. What occurs when a fractured formation
    is drilled?

a. Lost circulation
b. Kick
c. Influx
d. None of the above

A

a. Lost circulation

DRILLING ENGINEERING 1 (9 decks)

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