Drilling Engineering – MCQs – Practices Test .com

50 Score: 0 Attempted: 0/50

1. The primary purpose of drilling engineering is:
(A) Refining crude oil
(B) Designing and implementing well drilling operations
(C) Transporting petroleum
(D) Managing oil marketing

2. The most commonly used drilling method in petroleum engineering is:
(A) Cable tool drilling
(B) Rotary drilling
(C) Auger drilling
(D) Jet drilling

3. The main function of drilling mud is:
(A) To lubricate drill bit
(B) To cool drill bit
(C) To carry cuttings to the surface
(D) All of the above

4. Which of the following is NOT a function of drilling fluid?
(A) Wellbore stabilization
(B) Formation damage
(C) Pressure control
(D) Cuttings transport

5. The drill bit commonly used in rotary drilling is:
(A) Roller cone bit
(B) Diamond bit
(C) PDC bit
(D) All of the above

6. The drill string includes:
(A) Drill bit only
(B) Drill pipe, drill collars, and bit
(C) Casing and tubing
(D) Mud pumps

7. Blowout preventers (BOPs) are used to:
(A) Increase drilling speed
(B) Prevent uncontrolled flow of formation fluids
(C) Lubricate the drill pipe
(D) Remove cuttings

8. A “kick” in drilling refers to:
(A) Drill pipe bending
(B) Unexpected influx of formation fluids into the wellbore
(C) Drill bit damage
(D) Mud pump failure

9. Which of the following prevents well blowouts?
(A) Drill bit
(B) Drill collars
(C) Blowout preventer
(D) Casing

10. Casing is run in wells to:
(A) Prevent borehole collapse
(B) Isolate formation fluids
(C) Provide structural integrity
(D) All of the above

11. Cementing in drilling is performed to:
(A) Seal the casing to the formation
(B) Strengthen borehole
(C) Isolate different zones
(D) All of the above

12. The annulus in drilling refers to:
(A) The drill bit cutting edge
(B) Space between drill string and wellbore/casing
(C) Drill pipe connections
(D) A type of mud pump

13. Mud weight is usually measured in:
(A) psi
(B) ppg (pounds per gallon)
(C) cP (centipoise)
(D) ft/s

14. The main cause of lost circulation is:
(A) Excessive mud pressure
(B) Drill bit wear
(C) Pump failure
(D) Blowout preventer malfunction

15. Directional drilling is primarily used to:
(A) Reduce costs of drilling
(B) Reach targets not accessible by vertical wells
(C) Increase reservoir contact
(D) All of the above

16. MWD stands for:
(A) Measurement While Drilling
(B) Mud Weight Density
(C) Mechanical Well Depth
(D) Managed Well Drilling

17. The “kick tolerance” in drilling relates to:
(A) Maximum safe influx before blowout
(B) Drill bit wear rate
(C) Pump pressure limits
(D) Mud viscosity range

18. Which of the following is a drilling hazard?
(A) Stuck pipe
(B) Lost circulation
(C) Blowouts
(D) All of the above

19. The rotary table is used to:
(A) Rotate the drill string
(B) Pump drilling mud
(C) Control blowouts
(D) Measure mud weight

20. Top drive systems replace:
(A) Mud pumps
(B) Rotary table and kelly drive
(C) Blowout preventers
(D) Casing

21. Drill collars are used to:
(A) Add weight on bit
(B) Prevent pipe buckling
(C) Keep the drill string in tension
(D) All of the above

22. Which of the following increases drilling rate?
(A) Higher weight on bit (WOB)
(B) Increased rotary speed (RPM)
(C) Adequate mud circulation
(D) All of the above

23. A fishing operation in drilling refers to:
(A) Catching marine organisms
(B) Retrieving stuck or lost equipment from wellbore
(C) Cleaning the mud tanks
(D) Cementing operation

24. The main cause of stuck pipe is:
(A) Differential sticking
(B) Key seating
(C) Hole collapse
(D) All of the above

25. Which logging tool provides real-time drilling data?
(A) Wireline logging
(B) MWD/LWD tools
(C) Seismic surveys
(D) Gravimetric tools

26. A deviated well has an inclination angle of:
(A) 0°
(B) Between 0° and 90°
(C) Exactly 90°
(D) More than 90°

27. Horizontal wells have an inclination of about:
(A) 0°
(B) 45°
(C) 90°
(D) 180°

28. Which of the following is a drilling fluid additive for increasing density?
(A) Barite
(B) Bentonite
(C) Lime
(D) Soda ash

29. Which is used as a viscosifier in drilling mud?
(A) Barite
(B) Bentonite
(C) Gypsum
(D) Silica sand

30. A mud cake on borehole walls is important for:
(A) Preventing fluid loss
(B) Reducing borehole collapse
(C) Stabilizing formation
(D) All of the above

31. Kick detection is often based on:
(A) Increase in mud pit volume
(B) Decrease in pump pressure
(C) Change in flow rate
(D) All of the above

32. A core barrel is used to:
(A) Circulate mud
(B) Take rock samples from the wellbore
(C) Remove stuck pipe
(D) Cement the well

33. The term “trip” in drilling means:
(A) Pulling out or running in the drill string
(B) Sudden increase in mud weight
(C) Drilling through shale
(D) Installing casing

34. A drill bit’s efficiency is measured by:
(A) Weight on bit (WOB)
(B) Rate of penetration (ROP)
(C) Mud circulation
(D) Drill pipe length

35. Which type of BOP can shear drill pipe?
(A) Annular preventer
(B) Pipe ram preventer
(C) Shear ram preventer
(D) None of the above

36. Underbalanced drilling means:
(A) Mud pressure is higher than formation pressure
(B) Mud pressure is lower than formation pressure
(C) Hydrostatic pressure equals formation pressure
(D) No mud is used

37. Overbalanced drilling means:
38. A Christmas tree in drilling refers to:
(A) Drill string component
(B) Surface wellhead equipment used for production
(C) Mud circulation device
(D) Casing head

39. Drill cuttings are separated from mud using:
(A) Shale shakers
(B) Degassers
(C) Desanders
(D) Desilters

40. The primary cause of bit wear is:
(A) Abrasive rock formations
(B) Mud additives
(C) Drill collars
(D) High ROP

41. Which parameter is most important in controlling wellbore pressure?
(A) Casing
(B) Mud weight
(C) Rotary speed
(D) Drill bit type

42. The kick intensity is measured in:
(A) psi
(B) ppg
(C) barrels
(D) ft

43. The derrick is used in drilling to:
(A) Rotate the drill bit
(B) Support the drill string
(C) Pump drilling mud
(D) Prevent kicks

44. Kelly is a component of:
(A) Rotary drilling system
(B) Casing head
(C) BOP stack
(D) Cementing unit

45. A dogleg in drilling refers to:
(A) Sudden change in wellbore trajectory
(B) Deviation correction tool
(C) Drill bit type
(D) Mud loss zone

46. Reaming in drilling is done to:
(A) Enlarge or smoothen borehole
(B) Retrieve stuck pipe
(C) Collect core samples
(D) Remove mud cake

47. Drilling break usually indicates:
(A) Formation pressure change
(B) Bit wear-out
(C) Mud circulation loss
(D) Pump failure

48. Riser is mainly used in:
(A) Onshore drilling
(B) Offshore drilling
(C) Coal mining
(D) Seismic surveying

49. Which drilling technique reduces formation damage?
(A) Overbalanced drilling
(B) Underbalanced drilling
(C) Cable tool drilling
(D) Jet drilling

50. The ultimate goal of drilling engineering is:
(A) Safe, efficient, and economic drilling of wells
(B) Refining crude oil
(C) Transporting hydrocarbons
(D) Seismic data interpretation

Drilling Engineering – MCQs

FOUNDATIONAL SUBJECTS (Year 1 – Year 2)

CORE PETROLEUM ENGINEERING SUBJECTS (Year 2 – Year 4)

LABORATORIES & PRACTICALS (Theory-based MCQs can be made from these)

ELECTIVES (Optional/Advanced)