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Welcome to Well Control Practice Quiz One. Before you start en
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This quiz contains 25 questions on Basic Well Control which willWell Control School.
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CORRECT - WELL DO
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E
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QUESTION ONE
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
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WRONG - SORRY NOT COpsi/ft = ppg x .052
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RECT
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QUESTION TWO
A larger pit gain will give higher SIDPP & SICP.
A: True
B: False
C: Sometimes
D: Not enough information to tell
E:
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WRONG - SORRY NOT COThe bigger the pit gain the higher SICP is likely to be
SIDPP is not affected by the size of the influx.
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RECT
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QUESTION THREE
When killing a well using the Drillers Method what should happen
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
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to the mud pit
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WRONG - SORRY NOT COThe pit volume should remain constant during the se
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RECTcond circulation.
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QUESTION FOUR
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
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WRONG - SORRY NOT COWe tend to keep the hole full these days - whether or
correct amount in for the steel removed is another m
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RECT not we put the
atter.
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QUESTION FIVE
Circulating pressure of several thousand psi at the pump leaves t
i.e. at the shakers, with little or no pressure. Which part of the pr
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
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he circulating system
ssure lost acts on
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WRONG - SORRY NOT COAPL acts on the bottom of the hole.
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RECT
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QUESTION SIX
What two variables are considered when calculating hydrostatic
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
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ressure?
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WRONG - SORRY NOT COHydrostatic Pressure is affected by the length of the
and the weight of the column of fluid.
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RECTolumn of fluid
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QUESTION SEVEN
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
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WRONG - SORRY NOT COThey aer all good drilling practices.
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RECT
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d every tour using:
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WRONG - SORRY NOT COYou kill the well using the gauge on the remote chok
this is what you should use for recording slow circul
presuure losses.
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RECTpanel so
ting rate
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at rest.
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WRONG - SORRY NOT COTrue.
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RECT
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QUESTION TEN
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 &
D: Hold approximately 200 psi back pressure on the cho
E: Have slow circulating rate pressure losses to hand at
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trokes
e
ll times
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WRONG - SORRY NOT COThe smaller the pit gain, the lower pressures are like
quicker you close it in the smaller the pit gain.
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RECTy to be. The
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QUESTION ELEVEN
Which method of well control has only one circulation and you pu
mud weight right from the start.
A: Drillers
B: Wait & Weight
C: Volumetric
D: Company Man's
E: Bullheading
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p kill
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WRONG - SORRY NOT COThe correct answer is Wait & Weight Method.
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RECT
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QUESTION TWELVE
With which method of well control do you circulate the influx out o
before you circulate kill mud round the system?
A: Drillers
B: Wait & Weight
C: Volumetric
D: Company Man's
E: Bullheading
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WRONG - SORRY NOT COThe correct answer is Drillers Method.
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RECT
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QUESTION THIRTEEN
Which method of well control would you use if you could not pum
migration was suspected?
A: Drillers
B: Wait & Weight
C: Volumetric
D: Company Man's
E: Bullheading
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and gas
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WRONG - SORRY NOT COThe correct answer is Volumetric Method.
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QUESTION FOURTEEN
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
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RECTn of fluid
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QUESTION FIFTEEN
The secondary method of controlling a blowout if primary control
has been lost would be to:
A: Pump a barite slug
B: Close the BOP's
C: Pump a kill weight mud
D: Prepare a kill sheet
E: Investigate why primary control was lost
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RECTent.
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QUESTION SIXTEEN
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
D: A & B are correct
E: A & C are correct
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RECTigration with
onstant.
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ill operation then
losses.
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WRONG - SORRY NOT COTrue.
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RECT
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QUESTION EIGHTEEN
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
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WRONG - SORRY NOT COpsi/ft = pressure/feet
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RECT
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QUESTION NINETEEN
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 surfa
D: A combination of hydrostatic pressure and formation p
E: An exhalation of cigarette smoke
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e
ressure
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WRONG - SORRY NOT COFormation fluid entering the wellbore is a kick.
Formation fluid leaving the wellbore at surface is a b
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RECT
owout.
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QUESTION TWENTY
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
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RECT
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QUESTION TWENTY ONE
The slow circulating rate pressure loss is the pressure required to
round the system at a selected speed.
A: True
B: False
C: Only in vertical wells
D: Only in horizontal wells
E:
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circulate mud
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RECT
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QUESTION TWENTY TWO
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
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WRONG - SORRY NOT COThey are all correct.
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RECT
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QUESTION TWENTY THR
The U-Tube is balanced when the well is shut in and pressures h
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
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E
ve stabilised
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WRONG - SORRY NOT COTrue.
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RECT
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QUESTION TWENTY FOU
The choke is used to adjust casing pressure but to adjust drillpip
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
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pressure you
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WRONG - SORRY NOT COFalse. The main purpose of the choke is to control b
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QUESTION TWENTY FIVE
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
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WRONG - SORRY NOT COIf bottom hole pressure was affected when you pum
would not be allowed to pump slugs.
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RECTa slug you
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