Operator Assessment Exam

113 Questions | Total Attempts: 1285

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Operator Assessment Exam

Assess informational knowledge of operators


Questions and Answers
  • 1. 
    Downhole Equipment1.        As per 30 CFR 250, what is the interval for testing SCSSV’s?
    • A. 

      Not to exceed one month

    • B. 

      Not to exceed 6 months

    • C. 

      Not to exceed 1 year

  • 2. 
    Downhole Equipment2. A SCSSV has an allowable leakage rate?
    • A. 

      True

    • B. 

      False

  • 3. 
    Downhole Equipment3. What must be done when pressure is first observed on any of the casing strings?
    • A. 

      Notify MMS

    • B. 

      Perform a diagnostic test

    • C. 

      Monitor Monthly

    • D. 

      All of the above

  • 4. 
        Downhole Equipment    4.     All wells capable of natural flow need to have a ________ or ________installed in the tubing at least 100 feet below the mud line.    
    • A. 

      SCSSV or Plug

    • B. 

      GLV or SSV

    • C. 

      SCSSV or SSCSSV

    • D. 

      All of the Above

  • 5. 
    Downhole Equipment 5.   When a well will no longer flow on it’s own, gas lift gas is the most common source of lift available to continue production offshore.
    • A. 

      True

    • B. 

      False

  • 6. 
    Downhole Equipment6. Under what conditions may a well be flowed with the SCSSV locked out or the SSCSV removed?
    • A. 

      During routine wireline operations

    • B. 

      No flow wells

    • C. 

      Both 1 & 2

  • 7. 
    Downhole Equipment 7.        As wells age, their flowing characteristics change. When this happens oil and gas rates usually go down and water rates increase.  Which of the following explains what causes good wells to become loaded up.
    • A. 

      Water drive well, water increases.

    • B. 

      BHP is unable to overcome the hydrostatic head when heavier fluids enter the well bore.

    • C. 

      Good wells will always flow no matter how much water enters well bore.

    • D. 

      Bottom hole pressure continues to increase as the well gets older.

  • 8. 
    Downhole Equipment 8.        Name three noticeable changes that can be seen to warrant an operator to check a positive choke that may be cut out?
    • A. 

      Decrease flowing tubing psi, increase water production, increase gas production.

    • B. 

      Decrease flowing tubing psi, lower gas production, lower total fluid production.

    • C. 

      Increase flowing tubing psi, increase gas production, lower total fluid production.

    • D. 

      Increase flowing tubing psi, increase BHP, increase casing pressure.

  • 9. 
    Downhole Equipment 9.       Problem, a gas lift well has had a history of making C O 2 and now has holes in the tubing.  The holes have been sealed with pack-offs.   You are unable to maintain gas lift pressure to lift the well, gases around.  What do you believe has started to happen to this well? 
    • A. 

      Pack offs are leaking.

    • B. 

      More holes have developed in the tubing above the liquid level

    • C. 

      There is a problem with one of the gas lift valves.

    • D. 

      More than likely, All of the above.

  • 10. 
    Downhole Equipment 10.        Under what circumstances may the MMS district supervisor grant permission to lock out a SCSSV and install a SSCSV?
    • A. 

      The SCSSV is leaking and is a tubing retrievable safety valve.

    • B. 

      The well has been depleted and will no longer produce oil & gas.

    • C. 

      During hurricane season.

  • 11. 
    Downhole Equipment 11.        Problem, you have a flowing gas well that flows cold enough in the winter to cause hydrates in the choke body.  Methanol has been injected through the colder winter months to keep the choke body from freezing up.  You have been asked to increase the size of the choke in this well. About an hour after increasing the choke size the well has shut in on a PSH on the flow line pilot.  What could have caused the high pilot to shut in this well?
    • A. 

      Increased choke size raised pressure in the flowline above the pilot set point.

    • B. 

      Methanol injection rate was not increased and hydrates have formed in the line.

    • C. 

      Both 1 and 2.

    • D. 

      Neither 1 or 2.

  • 12. 
    Downhole Equipment 12.        A gas flow chart recorder is used to measure the volume of gas lift gas and also indicates the performance of the gas lift valves.  Describe how the chart can indicate gas lift valve performance.
    • A. 

      Static pen indicates flow rate and differential pen indicates valve operation.

    • B. 

      Differential pen indicates flow rate and static pen indicates valve operation.

    • C. 

      Doesn’t matter which pen you use.

  • 13. 
    Downhole Equipment 13.        What is the maximum time allowed as per 30 CFR for the SCSSV to close after the ESD has been activated?
    • A. 

      2 min 45 sec

    • B. 

      1 min 15 sec

    • C. 

      2 min

    • D. 

      1 min 45 sec

  • 14. 
    Downhole Equipment 14.        Gas lift gas is used to do what?
    • A. 

      Used to lift heavy equipment

    • B. 

      Used to increase gas production.

    • C. 

      Used to produce an oil well with low bottom hole pressure

    • D. 

      Used to produce water on wells with high bottom hole pressures.

  • 15. 
    WELLHEADS 1.        What is the most probable cause of a well having abnormally high tubing pressure?
    • A. 

      Down hole valve shut in.

    • B. 

      Valve downstream of the well has shut in

    • C. 

      Choke body has been cut out.

    • D. 

      Well is more than likely loaded up.

  • 16. 
    WELLHEADS2. The upper master valve, (SSV) is the only safety valve on the tree the MMS requires to close within _______ seconds of ESD activation.
    • A. 

      10 sec

    • B. 

      30 sec

    • C. 

      45 sec

    • D. 

      90 sec

  • 17. 
    WELLHEADS 3.        If you have a wellhead rated for 5,000# and the well flows at 2,500# FTP, and you found 6,000# on the wellhead panel to hold the SCSSV open, it is ok to keep this pressure on the safety valve.
    • A. 

      True

    • B. 

      False

  • 18. 
    WELLHEADS 4.        It is OK to remove the well head after you close the SCSSV and bleed the tubing to zero for a rig job.  
    • A. 

      True

    • B. 

      False

  • 19. 
    WELLHEADS 5. Wellheads are not required to have the OCS lease number on them.
    • A. 

      True

    • B. 

      False

  • 20. 
    WELLHEADS 6.        Problem, you have a well on a satellite structure that can only be viewed during the day, yet it has cut out 2 flow lines and made a slick in the past.  What device would you install in the flow line to help prevent the sand from cutting out another flow line in the future?
    • A. 

      A PSH

    • B. 

      A Sand Probe

    • C. 

      A PSL

    • D. 

      A titanium flow line

  • 21. 
    WELLHEADS 7.        When greasing tree valves only that valve manufacture’s recommended grease should be used.
    • A. 

      True

    • B. 

      False

  • 22. 
    WELLHEADS 8.        Flow line-check valves are allowed to leakage rates of 5 standard cubic feet of gas or 200 c.c.’s of liquid per minute.
    • A. 

      True

    • B. 

      False

  • 23. 
    WELLHEADS 9.        The bottom manual master valve should be used to isolate the flow only as a last resort due to any down stream failures.
    • A. 

      True

    • B. 

      False

  • 24. 
    WELLHEADS 10.        What device is required over each well head?
    • A. 

      A light fixture

    • B. 

      A TSE

    • C. 

      A Deluge system

    • D. 

      A pressure gauge

  • 25. 
    WELLHEADS 11.        What is the most probable cause of a well having abnormally Low tubing pressure?
    • A. 

      Down hole valve shut in.

    • B. 

      Valve downstream of the well has shut in.

    • C. 

      High gas sales pressure.

    • D. 

      Well has probably been gas lifted and no longer can flow.

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