Well Control - Basic Knowledge 1

25 Questions | Total Attempts: 1600

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Well Control - Basic Knowledge 1

CaspianExplorer. Com Welcome to Well Control - Basic Knowledge quiz 1. This quiz contains 25 questions on Basic Well Control. Take your time answering as you only get one go at each question. To answer simply click on it. If you have answered correctly you will be told so and your score will be adjusted accordingly. If you have answered incorrectly you will get a brief explanation of how to tackle the question but will not get a second crack at it. Good Luck.


Questions and Answers
  • 1. 
    A mud weight of 8.9 ppg has a gradient of
    • A. 

      .463 psi/ft

    • B. 

      .833 psi/ft

    • C. 

      .465 psi/ft

    • D. 

      .433 psi/ft

    • E. 

      .013 psi/ft

  • 2. 
    A larger pit gain will give higher SIDPP & SICP
    • A. 

      True

    • B. 

      False

    • C. 

      Sometimes

    • D. 

      Not enough information to tell

  • 3. 
    When killing a well using the Drillers Method what should happen to the mud pit volume during the second circulation?
    • A. 

      The volume will increase considerably

    • B. 

      The volume will decrease considerably

    • C. 

      The volume will not change

    • D. 

      The volume will increase at first then fall away

    • E. 

      The volume will decrease at first then build back up

  • 4. 
    Most kicks are caused by drill crews failing to
    • A. 

      Properly install & test BOP equipment

    • B. 

      Pump a slug prior to pulling out the hole

    • C. 

      Keep the hole full of drilling mud

    • D. 

      Ensure the hole takes the correct fill on trips

    • E. 

      All the above are correct

  • 5. 
    Circulating pressure of several thousand psi at the pump leaves the circulating system i.e. at the shakers, with little or no pressure.  Which part of the pressure lost acts on the bottom of the hole?
    • A. 

      Surface line pressure loss

    • B. 

      Drill string pressure loss

    • C. 

      Bit nozzle pressure loss

    • D. 

      Annular pressure loss

    • E. 

      All of the above

  • 6. 
    What two variables are considered when calculating hydrostatic pressure?
    • A. 

      Depth & shape of the hole

    • B. 

      Volume & weight of the mud

    • C. 

      APL & mud weight

    • D. 

      Hole depth & viscosity of the drilling mud

    • E. 

      Column length & density of the fluid

  • 7. 
    It is a good drilling practice to keep:
    • A. 

      Trip records

    • B. 

      Pump output figures

    • C. 

      Slow criculating rate pressure losses

    • D. 

      Crews trained up & well control concious

    • E. 

      All of the above

  • 8. 
    Slow circulating rate pressure losses should be taken and recorded every tour using:  
    • A. 

      The drillpipe gauge on the remote choke panel

    • B. 

      The drillpipe gauge on the driller's console

    • C. 

      The gauge on the choke manifold

    • D. 

      The pump gauge

    • E. 

      The reading obtained from the mud loggers

  • 9. 
    Hydrostatic pressure is the pressure exerted by a column of fluid at rest.
    • A. 

      True

    • B. 

      False

  • 10. 
    One of the most important rules in well control is to:
    • A. 

      Know how to get SIDPP with a float in the string

    • B. 

      Shut the well in quickly with the least amount of gain

    • C. 

      Circulate out a kick with constant drillpipe pressure & strokes

    • D. 

      Hold approximately 200 psi back pressure on the choke

    • E. 

      Have slow circulating rate pressure losses to hand at all times

  • 11. 
    Which method of well control has only one circulation and you pump kill mud weight right from the start.
    • A. 

      Drillers

    • B. 

      Wait & Weight

    • C. 

      Volumetric

    • D. 

      Company Man's

    • E. 

      Bullheading

  • 12. 
    With which method of well control do you circulate the influx out of the well before you circulate kill mud round the system?
    • A. 

      Drillers

    • B. 

      Wait & Weight

    • C. 

      Volumetric

    • D. 

      Company Man's

    • E. 

      Bullheading

  • 13. 
    Which method of well control would you use if you could not pump and gas migration was suspected?
    • A. 

      Drillers

    • B. 

      Wait & Weight

    • C. 

      Volumetric

    • D. 

      Company Man's

    • E. 

      Bullheading

  • 14. 
    The primary method for the prevention of blowouts is..
    • A. 

      Highly trained drillers

    • B. 

      Closing the BOP's

    • C. 

      Correct mud weight in the hole

    • D. 

      A good company man

    • E. 

      A good leak off test

  • 15. 
    The secondary method of controlling a blowout if primary control has been lost would be..
    • A. 

      Highly trained drillers

    • B. 

      Closing the BOP's

    • C. 

      Correct mud weight in the hole

    • D. 

      A good company man

    • E. 

      A good leak off test

  • 16. 
    If the proper drillpipe pressure schedule is not followed during a kill operation then BHP could either be too high or too low causing another influx or losses.
    • A. 

      True

    • B. 

      False

    • C. 

      Sometimes

    • D. 

      Only in vertical wells

    • E. 

      Only in horizontal wells

  • 17. 
    As gas migrates up a wellbore during shut in conditions then.. Note: there is no float in the drill string  
    • A. 

      Casing pressure will increase

    • B. 

      Drillpipe pressure will increase

    • C. 

      Bubble pressure will increase

  • 18. 
    The formation pressure at 7500 ft TVD is 3488 psi. What is the approximate formation gradient?
    • A. 

      .349 psi/ft

    • B. 

      .465 psi/ft

    • C. 

      .521 psi/ft

    • D. 

      .722 psi/ft

    • E. 

      1.00 psi/ft

  • 19. 
    A blowout can be described as..
    • A. 

      A flow of fluid from the formation into the wellbore

    • B. 

      An abnormally pressured formation

    • C. 

      An uncontrolled flow of fluid from the wellbore at surface

    • D. 

      A combination of hydrostatic pressure and formation pressure

    • E. 

      An exhalation of cigarette smoke

  • 20. 
    Which of the following are possible indicators of a kick?
    • A. 

      Increase in flow

    • B. 

      Drilling break

    • C. 

      Increase in pit volume

    • D. 

      Gas cut mud

    • E. 

      All of the above

  • 21. 
    The slow circulating rate pressure loss is the pressure required to circulate mud round the system at a selected speed.
    • A. 

      True

    • B. 

      False

    • C. 

      Sometimes

    • D. 

      Only in vertical wells

    • E. 

      Only in horizontal wells

  • 22. 
    When should slow circulating rate pressure losses be taken?
    • A. 

      As soon as practical after coming on tour

    • B. 

      When the mud weight changes

    • C. 

      After drilling a large footage (up to 1000')

    • D. 

      BHA or bit nozzle changes

    • E. 

      All of the above

  • 23. 
    The U-Tube is balanced when the well is shut in and pressures have stabilized regardless of the difference between SIDPP & SICP.
    • A. 

      True

    • B. 

      False

    • C. 

      Only in vertical wells

    • D. 

      Only in horizontal wells

    • E. 

      Only with surface stacks

  • 24. 
    The choke is used to adjust casing pressure but to adjust drillpipe pressure you need to change the pump speed.
    • A. 

      True

    • B. 

      False

    • C. 

      Only in vertical wells

    • D. 

      Only in horizontal wells

    • E. 

      Only with surface stacks

  • 25. 
    Bottom hole pressure is not affected when you pump a slug?
    • A. 

      True

    • B. 

      False

    • C. 

      Only in vertical wells

    • D. 

      Only in horizontal wells

    • E. 

      Only with surface stacks