1. What is the only function of a diverter?

2. What effect will an expanding gas bubble have on ECD as it is circulated out of a well?

3. What pressure is held constant during the first circulation of the Driller's Method?

4. The formation pressure at 12,000 TVD/13,300 MD is 7,500 psi. The mud weight in the hole is 11 ppg. How much back pressure is enough to bring the BHP up to control formation pressure?

5. An open well is full of clean fluid and you are not circulating. What is the Bottom Hole Pressure (BHP)?

6. While drilling ahead, a long flowback happened, the driller stopped drilling and closed the BOP. After checking the SIDPP & SICP, there was 150 psi in both. What should be the next action?

7. If the Rotating Control Device is leaking drilling fluid in a hydrostatically overbalanced well, what is the first course of action the driller should take?

8. What is the main function of the choke in the overall BOP system?

9. You are drilling a section of well with a kick tolerance window indicating a maximum allowable kick volume of less than the rig has shown they can successfully detect and shut in. What action could be taken?

10. How do you know that a self-fill float is plugged?

11. A well is shut in and a gas kick migrates 1000 feet with no expansion in the annulus. Well Information:
Gas Volume = 20 bbl
Total Depth = 6,000ʹ MD and TVD
Casing Shoe = 2,200ʹ MD and TVD
Open Hole = 8.5ʺ
Mud Weight = 8.33 ppg
What is the increase in bottom hole pressure due to gas migration? Assume no losses to the formation.

12. You are pulling out of the hole when a kick is swabbed in. The shut-in pressures indicate that the gas is migrating. What well control method can be used to manage the gas migration?

13. On a surface stack rig, a salt-water kick with no associated gas was encountered and the well was shut in. If drill string has drill pipe and drill collars, when will the surface casing pressure be maximum during the well kill ?

14. The Driller has successfully shut-in on a kick. Which one of the following would you delegate to a crewmember?

15. Where is the best place to put a heavy pill?

16. Why is the Mud Weight measured at the Shakers at regular intervals?

17. An influx has been circulated out of the well with the well control choke using the driller method's first circulation. The well is balanced with a Final Circulating Pressure of 600 psi @ 200 GPM. To continue drilling ahead with the same MW through an MPD manifold, what surface pressure will be needed with the pump rate 450 GPM?

18. After successfully shutting-in on a kick, which of the following is a crucial responsibility of the Supervisor?

19. How does the expansion rate of gas in the horizontal section compare to the vertical section as it is circulated out of the well?

20. A 30.0 bbls 14.5 ppg slug is pumped prior to tripping out of the hole. Mud Weight is 12.3 ppg. What mud volume, in addition to the slug volume, should we expect returned due to the slug  u-tubing into position?

21. What is the definition of fracture pressure?

22. While maintaining FCP (Final Circulating Pressure) you make an adjustment to the choke. The amount of time it takes to see the pressure change on the drill pipe gauge is called

23. Which are not main components of an RCD system?

24. In a well with the Bit to Shoe volume greater than drill string volume, which of the following kill methods will minimize the risk of losses?

25. What is the main function of the Trip Tank?

26. During a well kill on a surface BOP installation, the pump rate is increased while holding drill pipe pressure constant. How will this affect Bottom-hole Pressure (BHP}?

27. Before cutting the drilling line, with the bit at the casing shoe, which item of equipment must be installed to improve well control capability ?

28. A weighted pill is pumped into the well. As the pipe is pulled out of the pill, what will happen to bottom hole pressure?

29. What is the percentage of void space in a formation?

30. You shut in a kick but do not know the slow circulating rate pressure. What procedure should you use to obtain the correct initial circulating pressure (ICP)?

31. What will happen to friction pressure as the drilling fluid moves from around the bottom hole assembly to around the drillpipe?

32. What is the correct definition of Porosity?

33. Which of the following situations will create the highest surge pressures when tripping in the hole?

34. When using the Wait and Weight method to circulate kill mud down to the bit, the drill pipe pressure should:

35. A trip sheet was prepared while a tripping out operation, a record for the trip tank volume was taken every 5 stands, by checking the trip sheet, at which record was the first evidence that abnormal pressure occurred?

(5 stands = 3.78 bbl’s)

36. When should you recalculate the Maximum Allowable Annular Surface Pressure (MAASP)?

37. During a well kill operation what pressure do we want to keep the bottom hole pressure at least equal to?

38. The rig team has just calculated Kick Tolerance for a range of Kick Intensities, and the operational Kick Tolerance Window is provided below.
From the graph, determine the maximum volume of gas that can be swabbed into the well (0 ppg Kick Intensity), shut-in and circulated out without breaking down the shoe?

39. What is the generally accepted minimum number of barriers that must be in place and tested for most drilling operations?

40. Why is MD used to calculate ECD instead of in the well?

41. Why must you leave spare capacity in the active pit system when circulating out a kick?

42. You are drilling ahead with a 12.25-inch Bit with an average ROP of 95 feet/hour. For the last 60 minutes there has been no change to the pit level. What action would you take?

43. You are circulating a gas kick out of the well using the Driller's method. What would normally happen to active pit level during the circulation?

44. The results of a flow check are inconclusive due to the small volume of returns from the well. Which of the following is the most accurate way to determine if the well is flowing?

45. During the 2nd Circulation of the Driller's Method, kill weight mud is returning at the shakers. The well is shut in correctly. What should the pressure gauges read assuming no trapped pressure in the well?

46. What should happen while making stripping through annular?

47. In a well with the Bit to Shoe volume greater than drill string volume, which of the following kill methods will minimize the risk of losses?

48. A mud system consists of 4 tanks (9 ft length, 12 ft width, 8 ft height), if the fluid depth in the tanks is 6 ft, how many barrel can be added to the system?

49. When running in the hole with casing what is a benefit of routine fill-ups?

50. You are circulating a gas kick out of the well using the Driller's method. What would normally happen to active pit level during the circulation?

51. You shut in a kick but do not know the slow circulating rate pressure. What procedure should you use to obtain the correct initial circulating pressure (ICP)?

52. What is the correct definition of Permeability?

53. During the first circulation of the Driller's method, casing pressure starts to increase and after the lag time the drill pipe pressure starts to increase. What could be the problem?

54. During the 2nd Circulation of the Driller's Method, kill weight mud is returning at the shakers. The well is shut in correctly. What should the pressure gauges read assuming no trapped pressure in the well?

55. During a well kill operation what pressure do we want to keep the bottom hole pressure at least equal to?

56. You run back to the shoe and carry out a slip-and-cut on the drilling line. The operation normally takes 60 minutes. What is the best way to monitor the well?

57. What is the main function of the choke in the overall BOP system?

58. The Mud Engineer starts the degasser and the desilter. What will happen to flow rate from the well?

59. You close a ram preventer using the remote BOP panel the ram open light goes out and the close light illuminates but you notice that the accumulator pressure has remained static. What has happened?

60. What is the main reason for a trip drill ?

61. What is the purpose of a flame arrester in the flare stack (end of the vent line on a separator?

62. On a surface stack rig, a salt-water kick with no associated gas was encountered and the well was shut in. If drill string has drill pipe and drill collars, when will the surface casing pressure be maximum during the well kill?

63. What is the purpose for having the flow line capable of venting to the Mud Gas separator?

64. What increases the risk of surging when running casing in the hole?

65. How does increasing wellbore temperature affect non-aqueous (oil-based) mud density?

66. You close a ram preventer using the remote BOP panel the ram open light goes out and the close light illuminates but you notice that the accumulator pressure has remained static. What has happened?

67. A well 9,850 feet (TVD) is filled with 9.2 ppg brine. The plan is to run in the hole to 6,200 feet TVD (6,600 feet measured depth) and displace with drill water of 8.4 ppg. Calculate the hydrostatic pressure at 9,850 feet when the drill water has been circulated back to the surface?

68. A well is shut in on a kick and the shut-in pressures on the gauges have stabilized. The SIDPP reads 350 psi and the SICP reads 900 psi. What is happening in the well?

69. You shut in a kick but do not know the slow circulating rate pressure. What procedure should you use to obtain the correct initial circulating pressure (ICP)?

70. You run back to the shoe and carry out a slip-and-cut on the drilling line. The operation normally takes 60 minutes. What is the best way to monitor the well?

71. What gauge is used to record the Slow Circulating Rate (SCR) pressure?

72. What action should a Driller take if a sudden increase m mud gas level is recorded?

73. You have shut-in on a well and are planning a kill operation. The Mud Engineer estimates it will take 3200 sacks of barite to weight up the fluid system to kill weight. The rig has 2500 sacks of barite onsite and more will not arrive for 3 days. Shut in pressures have increased since the well was shut in indicating gas migration. The shoe strength is a concern if pressures continue to build. Which Kill Method would be the best to implement

74. What term means "an undesired influx of formation fluids into the wellbore"?

75. What is the correct definition of Porosity?i

76. Reduced mud weight causes kick, how could mud weight be accidentally reduced?

77. What is the equivalent mud weight at 10,000 ft TVD with 10.0 ppg and 260 psi of surface pressure?

78. What measures can be taken to prevent "blow-through" .in a mud gas separator?

79. Which are not main components of an RCD system?

80. A well is shut-in with stabilized SICP = 500 psi. The Driller pumped at 5 SPM until float was bumped and pump shut down. The Casing pressure gauge now reads 575 psi and the drill pipe gauge = 380 psi. What is the SIDPP?