0% 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980 The test starts the moment you click on the Start button. You may work on your test until the time allotted for it ends. Duration: 3 hours Your time is up! Your test is submitted automatically whether you’re finished or not. Well Control Drilling Well Control Supervisory The number of attempts remaining is 5 Please fill your information FULL NAMEEmailPhone Number 1 / 80 1. How does increasing wellbore temperature affect non-aqueous (oil-based) mud density? a. No effect on density b. Increases density c. Decreases density 2 / 80 2. What is the main function of the Trip Tank? a. To dump mud into the well for a Pit drill. b. To monitor for gains when circulating bottoms-up. c. To keep the hole full when tripping in the hole. d. To detect swabbing or surging. 3 / 80 3. What is the main function of the choke in the overall BOP system? a. To hold back pressure while circulating out a kick b. To shut the well in softly c. To direct wellbore fluids to the mud/gas separator d. To direct hydrocarbons to the flare 4 / 80 4. What is the correct definition of Permeability? a. The density of the formation fluids b. The pressure of the fluid in the pore space c. The ability of formation fluids to move through the rock d. The amount of solid rock in the formation 5 / 80 5. 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? a. Choke was out b. Plugged bit nozzle c. Choke plugging d. Drill string washout 6 / 80 6. 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? a. Shut the Diverter and monitor for flow from the vent line b. Pull 5 stands and watch the well to see if it fills up c. Close in the well and line up through the mud-gas separator and monitor for flow at the Shakers d. Line up to the trip tank and monitor for gains or losses 7 / 80 7. 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? a. More than 600 psi b. Less than 600 psi. c. 600 psi 8 / 80 8. Before cutting the drilling line, with the bit at the casing shoe, which item of equipment must be installed to improve well control capability ? a. Drop in check valve b. Inside blowout preventer c. Circulating head d. Full opening safety valve 9 / 80 9. 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? a. Volumetric Method b. Driller’s Method c. Wait and Weigh Method d. Bullheading Method 10 / 80 10. While drilling the top-hole section on a surface stack rig, a shallow gas flow is encountered. What is the safest action to secure the safety of the rig and personnel on the rig? a. Shut-in the well and prepare for kill operations immediately b. Line the diverter up to the choke manifold, activate the diverter system, and remove non-essential personnel from the rig floor c. Keep pumping mud into the well at the same SPM and circulate bottoms up d. Activate the diverter system and follow rig-specific shallow gas plan 11 / 80 11. 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? a. The well is balanced; pressures at the bottom are balanced on both sides of the well b. The well is not balanced; bottom hole pressure on the annulus side is lower due to contamination by formation fluids c. The well is not balanced; bottom hole pressure (BHP) on the annular side is higher than on the drill pipe side of the U-tube d. The well is not completely full of mud and there is more bottom hole pressure on the drill pipe side of the well 12 / 80 12. 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? a. Plugged bit nozzle b. Choke plugging c. Choke was out d. Drill string washout 13 / 80 13. If you cannot confirm that trip displacements are correct when pulling out of the hole, what should you do? a. Empty the trip tank to correct for the fluid displacement b. Check your trip data from the previous well and if it is only a few barrels different, then keep pulling c. Pump a heavy slug and return to bottom d. Notify supervisor, prepare to run back to bottom and circulate bottoms up 14 / 80 14. 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? a. 154 bbl’s b. 205 bbl’s c. 148 bbl’s d. 137 bbl’s 15 / 80 15. During a well kill operation what pressure do we want to keep the bottom hole pressure at least equal to? a. At least equal to Drill Pipe pressure b. At least equal to formation fluid pressure c. At least equal to slow circulating rate d. At least equal to Shut in Casing pressure 16 / 80 16. What is the only function of a diverter? a. To direct formation fluids away from the rig floor b. To shut in a shallow kick. c. To act as a backup system if the annular preventer fails. d. To create a back pressure sufficient to stop formation fluids entering the wellbore. 17 / 80 17. 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? a. Wait and Weigh Method b. Bullheading Method c. Volumetric Method d. Driller’s Method 18 / 80 18. When running in the hole with casing what is a benefit of routine fill-ups? a. To provide hydrostatic support to the casing and related components b. To minimize surge pressure when running in c. To prevent casing burst due to high internal pressure d. To reduce Hook Load and wear on the drilling line 19 / 80 19. Why is it important to calculate the number of strokes from the bit to casing shoe? a. It’s a part of calculations b. To know the maximum casing pressure c. To know when the gas expansion occurs d. To know when the influx is in the casing 20 / 80 20. What are the benefits of using MPD while drilling a well ? a. It aids in mitigating pressure-related non productive time events. b. All choices c. It enables a Well to be drilled within tight Window between pore pressure and fracture pressure. d. It enables well to be drilled with more consistent BHP. 21 / 80 21. 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? a. Driller's Method b. The Volumetric Method c. Wait and Weight Method d. Reverse Circulation Method 22 / 80 22. What is the function of vent/ bleed/ straight through line in the choke manifold? a. To bleed high volume of formation fluid by-passing the choke b. To facilitate easy handling of choke c. To apply back pressure while controlling a kick 23 / 80 23. 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? a. Consider setting casing/liner b. Set cement plug and sidetrack c. Continue drilling carefully, kick tolerance will improve with depth d. Pull bit into casing shoe as quickly as possible 24 / 80 24. 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}? a. BHP will increase b. BHP will stay constant c. BHP will decrease d. There is no way to know what will happen to BHP 25 / 80 25. After successfully shutting-in on a kick, which of the following is a crucial responsibility of the Supervisor? a. Measure Mud Weight in and out b. Communicate plan to crew c. Mix Kill Weight Mud d. Check Pit Levels and lineups 26 / 80 26. While tripping out of the hole, the Assistant Driller (AD) has noted improper hole fill: After pulling five stands, the hole has taken no fluid from the trip tank. It should have taken three barrels. The AD informs the Driller of the problem. What is the action should the Driller take? a. Connect Kelly or Top Drive and circulate bottoms-up b. Close the diverter and line up to the degasser c. Pull five more stands and re-evaluate the situation d. Perform a flow check immediately and shut in if required 27 / 80 27. 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? a. Prepare to mix LCM as you may be losing some mud to the formation b. Continue drilling al is good c. Make a flow check w check why pit volume is stable d. Increase WOB now that ROP is stable 28 / 80 28. Why is MD used to calculate ECD instead of in the well? a. Because of the water in open formation. b. Because the friction of the mud solids and cuttings impact the entire annulus. c. Changes in hydrostatic pressure. d. Does not matter. 29 / 80 29. Which are not main components of an RCD system? a. Flow line and the orbit valve in the flow line b. Bowl/bogy c. Bearing assembly d. Pipe sealing elements 30 / 80 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)? a. Follow correct start-up procedure. Read the pressure on the drill pipe gauge, subtracting any overbalance/safety margin pressure. This is the ICP b. Choose the kill rate circulating pressure you took with the last BHA in the hole nearest to the depth where the kick took place. Add 100 psi to this value as a safety margin. c. Contact the Mud Logger and request the best possible calculation of the Initial Circulating Pressure to use during the well kill d. Use the SIDPP as the circulating pressure. 31 / 80 31. 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? a. 14 bbls b. 19 bbls c. 25 bbls d. 22 bbls 32 / 80 32. 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? a. Pit level would decrease due to gas expansion then stay constant as gas exits the choke b. Pit level would decrease due to gas expansion then increase as gas exits the choke c. Pit level would increase due to gas expansion then stay constant as gas exits the choke d. Pit level would increase due to gas expansion then decrease as gas exits the choke 33 / 80 33. What measures can be taken to prevent "blow-through" .in a mud gas separator? a. Allow the hydrostatic head to be reduced in the separator before the influx arrives to the separator. b. Restrict the vent line ID. c. Limit the flow rate -into the separator when the influx is entering the separator. d. Use the minimum TVD on the mud seal. 34 / 80 34. Why must you leave spare capacity in the active pit system when circulating out a kick? a. To store the kick fluid as it is circulated from the well b. If the kick is oil, it will expand, and pit level will increase c. If the kick is gas it will expand and pit level will increase d. If the kick is salt water, it will expand, and pit level will increase 35 / 80 35. What are the key elements of Bullheading? a. Pumping fluid into the top of a well and bleeding gas in a step by step fashion b. Forcing pipe into a hole under pressure using hydraulic jacks c. Pumping into a shut-in well to force formation fluids back into the formation d. Circulating formation fluids out of a well using a choke and circulating system 36 / 80 36. What should happen while making stripping through annular? a. Open choke to reduce well pressure b. Regulate annular closing pressure to minimum pressure that control well bore pressure c. Increase annular closing pressure to reduce leakage d. Close pipe ram and open annular till tool joint passes 37 / 80 37. 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? a. 380 psi b. 305 psi c. 75 psi d. 200 psi 38 / 80 38. 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? a. SICP will be higher than the SIDPP b. SICP and SIDPP will be equal to the well's original SIDPP c. SICP and SIDPP gauges will both read 0 psi d. SICP will be lower than the SIDPP 39 / 80 39. The Driller has successfully shut-in on a kick. Which one of the following would you delegate to a crewmember? a. Checking kill-sheet for accuracy b. Checking for leaks at the pumps, pipework and pit areas c. Communicating kill plan to crewmembers d. Instructions to crew if you get Gas Migration 40 / 80 40. 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? a. Lines up to mud pits and inform Mud Logger to monitor for gains b. Shut in well and record pressure every 15 minutes c. Install a safety valve in the drill string. Line up to the Trip Tank and set the alarm d. Line up to trip tank and set Trip Tank alarm 41 / 80 41. An open well is full of clean fluid and you are not circulating. What is the Bottom Hole Pressure (BHP)? a. BHP equals hydrostatic pressure minus Annular Pressure Loss b. BHP equals hydrostatic pressure c. BHP equals hydrostatic pressure plus Annular Pressure Loss equals 42 / 80 42. What is the main reason for a trip drill ? a. To ensure the crew is able to effectively recognize and react to a kick while tripping pipe b. To test the pit, flow and trip tank alarms c. To see how fast the Driller can line up on the choke manifold d. To ensure the crew is trained to kill the well 43 / 80 43. What is the purpose of a flame arrester in the flare stack (end of the vent line on a separator? a. To allow your vent line to light up the rig location when circulating out a kick b. To allow gas to bring a fire back into the separator c. All choices d. A passive device that allows gas to pass through it but stops the propagation of a flame 44 / 80 44. Which of the following situations will create the highest surge pressures when tripping in the hole? a. Fast trip speed and low gel strength fluid in the well bore b. Slow trip speed and high gel strength fluid in the wellbore c. Slow trip speed and low gel strength fluid in the well bore d. Fast trip speed and high gel strength fluid in the well bore 45 / 80 45. You are running a non-shearable tool in the hole on a surface stack rig. What option is available to the Driller if the well flows when the tool is across the BOP stack? a. Make up a safety valve in string and close the annular b. Circulate to create an ECD effect on the bottom of the hole c. Close the Diverter and pump kill mud d. Continue running in hole and use surging effect to stop the kick 46 / 80 46. 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) a. 4 b. 1 c. 6 d. 5 e. 2 47 / 80 47. A 500-foot long cement plug is set inside the casing shoe. The mud in the hole is to be displaced to a new mud density. Mud density below the cement plug = 11.8 ppg New mud density = 12.8 ppg Top of cement plug= 8200 feet I f the plug failed and allowed pressure to pass between the top and the bottom of the plug, what would happen to the bottom hole pressure? a. BHP would stay the same b. BHP would decrease c. BHP would increase 48 / 80 48. If a well is shut in with 0 psi SICP and 435 psi SIDPP, what is the reason for zero SICP? a. Fractured format on at the casing shoe b. Drill string failure c. Hole packed off around the BHA d. Well was swabbed in 49 / 80 49. What gauge is used to record the Slow Circulating Rate (SCR) pressure? a. The casing pressure gauge on the Choke Control panel b. The drill pipe pressure gauge on the Choke Control panel c. The pump pressure gauge at the mud pump d. The casing pressure gauge at the Standpipe Manifold 50 / 80 50. What will happen to friction pressure as the drilling fluid moves from around the bottom hole assembly to around the drillpipe? a. Stays the same b. Increases c. Depends if it's a mud or a brine fluid d. Deceases 51 / 80 51. What pressure is held constant during the first circulation of the Driller's Method? a. Shut in Casing Pressure b. Shut in Drill Pipe Pressure c. Initial Circulating Pressure d. Final Circulating Pressure 52 / 80 52. What action should a Driller take if a sudden increase m mud gas level is recorded? a. Check for flow and call Supervisor b. Request Mud Engineer to increase mud weight by 0.3 ppg c. Increase rate of penetration to minimize the warning signs d. Stop drilling. Circulate bottoms-up, record gas levels and inform your supervisor 53 / 80 53. When should you recalculate the Maximum Allowable Annular Surface Pressure (MAASP)? a. After a bit change b. Every tour c. After every 300 to 500 feet drilled d. After a mud weight change 54 / 80 54. 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 a. Driller's Method of Well Control b. Begin to Lubricate and Bleed c. Wait and Weight Method of Well Control d. Kill the well with Reverse Circulation 55 / 80 55. What is the definition of fracture pressure? a. The maximum BHP during a kill operation b. The surface pressure that will cause mud losses c. The maximum pressure on drill pipe during a kill operation d. The pressure at which the formation will fail 56 / 80 56. Why do we pressure test a cement job? a. To make sure casing does not collapse b. To test the integrity of the cement c. To increase the hardness of the cement d. To reduce the effect of wet cement on the drill Bit 57 / 80 57. Where is the best place to put a heavy pill? a. In the reserve pit. b. At the end of the horizontal section. c. In the vertical part of the well. d. At the beginning of the h Horizontal section. 58 / 80 58. Select the correct definition of the "closing ratio" of a ram preventer. a. Operating pressure required to close the ram against maximum anticipated wellbore Pressure b. Operating pressure required to open the ram at BOP Rated Working Pressure c. Operating pressure required to close the ram against the formation pressure d. Ratio of the packer area against the piston rod area 59 / 80 59. What is the purpose for having the flow line capable of venting to the Mud Gas separator? a. It can increase pressure on the flow line on a connection. b. If gas levels reach a high level in the flow line then you can vent to the Mud Gas separator. c. If mud flow is too excessive then you can dump the excess mud into the separator d. All choices 60 / 80 60. 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? a. Reduce pressure on the head and continue drilling. b. If you have shear rams, close them. c. Pickup off bottom, shut down the pumps, and close the annular preventer d. Increase pressure on the head and continue drilling. 61 / 80 61. What is the correct definition of Porosity? a. The percentage of solid rock in the formation b. The pressure of the fluid in the pore space c. The ability of formation fluids to move through the rock d. The amount of void space in the rock expressed as a percent 62 / 80 62. 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? a. Lines up to mud pits and inform Mud Logger to monitor for gains b. Shut in well and record pressure every 15 minutes c. Line up to trip tank and set Trip Tank alarm d. Install a safety valve in the drill string. Line up to the Trip Tank and set the alarm 63 / 80 63. 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 a. Gas Migration time b. Lag time c. Annular velocity time d. Bottoms-Up time 64 / 80 64. The Mud Engineer starts the degasser and the desilter. What will happen to flow rate from the well? a. Flow rate will decrease after two to three minutes b. Flow rate will increase after two to three minutes c. Flow Rate will stay the same 65 / 80 65. 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? a. When kick is just below the shoe. b. When the kick is in the portion of the annulus that maximizes its height c. When kill mud reaches bit. d. When kick reaches the surface. 66 / 80 66. What is the equivalent mud weight at 10,000 ft TVD with 10.0 ppg and 260 psi of surface pressure? a. 11 ppg b. 10.5 ppg c. 10.9 ppg d. 12 ppg 67 / 80 67. What is the correct definition of Porosity?i a. The percentage of solid rock in the formation b. The ability of formation fluids to move through the rock c. The amount of void space in the rock expressed as a percent d. The pressure of the fluid in the pore space 68 / 80 68. A weighted pill is pumped into the well. As the pipe is pulled out of the pill, what will happen to bottom hole pressure? a. Increase b. Stay the same c. Decrease 69 / 80 69. 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? a. 7.35 bbls b. 6.35 bbls c. 5.36 bbls d. 5.96 bbls 70 / 80 70. 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? a. No air pressure at the panel b. Master valve not held down for 5seconds c. Possible blockage in the line between the accumulator unit and BOP stack d. The 3-position Ram valve on the accumulator has not moved 71 / 80 71. When using the Wait and Weight method to circulate kill mud down to the bit, the drill pipe pressure should: a. Stay the same b. Slowly increase c. Slowly decrease 72 / 80 72. Which are not main components of an RCD system? a. Bowl/body. b. Bearing assembly. c. Pipe sealing elements. d. Flow line and the orbit valve in the flow line. 73 / 80 73. What is the main function of the choke in the overall BOP system? a. To shut the well in softly b. To direct hydrocarbons to the flare c. To direct wellbore fluids to the mud/gas separator d. To hold back pressure while circulating out a kick 74 / 80 74. How do you know that a self-fill float is plugged? a. Hook load increases b. Trip monitoring returns will decrease to closed end displacement c. Running time increases d. Trip monitoring returns will increase to closed end displacement 75 / 80 75. What is the percentage of void space in a formation? a. Porosity b. Permeability c. Low Pressure Formation d. Shale Density 76 / 80 76. 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 a. Driller's Method of Well Control b. Wait and Weight Method of Well Control c. Kill the well with Reverse Circulation d. Begin to Lubricate and Bleed 77 / 80 77. Why is the Mud Weight measured at the Shakers at regular intervals? a. To weigh the volume of cuttings in the mud b. To record on the Mud Engineer daily report c. To check for contamination of the mud returns d. To measure the gas content in the mud 78 / 80 78. 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)? a. Follow correct start-up procedure. Read the pressure on the drill pipe gauge, subtracting any overbalance/safety margin pressure. This is the ICP b. Use the SIDPP as the circulating pressure c. Contact the Mud Logger and request the best possible calculation of the Initial Circulating Pressure to use during the well kill d. Choose the kill rate circulating pressure you took with the last BHA in the hole nearest to the depth where the kick took place. Add 100 psi to this value as a safety margin 79 / 80 79. 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? a. 624 psi b. Zero c. 686 psi 80 / 80 80. During a well kill operation what pressure do we want to keep the bottom hole pressure at least equal to? a. At least equal to formation fluid pressure b. At least equal to Drill Pipe pressure c. At least equal to slow circulating rate d. At least equal to Shut in Casing pressure Your score is 0% Restart quiz Rate it! Send feedback
