14949858
Description
Mind Map by Valdir Silva, updated more than 1 year ago
|
Created by Valdir Silva
over 5 years ago
|
|
Well control when Running casing
- After running casing we are going to job cementing
- In this case many
kicks result
because reducing
hydrostatic
pressure during
the operation.
- Stuck pipe migration
- Differential sticking
- Occurs when the mud
pressure on the outside
of wall of the drill pipe is
greater than formation
pressure
- Key seating
- A smaller diameter
channel worn in to the
side of the larger
diameter wellbore
- Balloning formations
- Phenomenon that occurs
when the formations takes
mud When the pumps are on,
then given it back when the
pumps are of.
- mechanical failures
- Washout in string
- Pump failure
- Washout in choke
- Loss of seal on choke
- Shears not separating pipe
- BOP failing to operate
- Loss of accumulator fluid or pressure
- Alarm not work properly
- Human failures
- Lack of training
- Poor planning
- Complacency
- Questions
- 1 - What is suabbing
- A - Mechanical reduction
of hydrostatic pressure
- 2 - When drilling into a
transition zone, what
two change would you
expect to see in the
mud.
- A - Increase salinity
and Increase in gas
content
- 3 - Which of the following
is not a warning sign of
an increasing formation
pressure
- A - Increase in shale density
- 4 - What is the proper things to
do before continuing the
operation after ballooning has
been confirmed the first time?
- A - Circulate bottom up
through a full open
choke at a reduced rate.
- 5 - You are drilling ahead at constant ROP, The
shale shakers cannot handle the amount of
cutting returning from the well. What is the
safest thing to do?
- A - Check for flow - if there is none,
circulate bottom up at a reduced rate so
the shakers can handle the cutting
volume.
- 6 - While making a connection, the driller closing the well due to an
abnormally long flowback time. The stabilized surface pressure were
equal at 150 psi on bolth gauges. You suspect the well is ballooning. after
bleeding the pressure to zero in increment of 50 psi, the pressure stay at
0 psi, Oil based mud is in the hole.
- A - Open the choke and flow
check, if negative, circulate
bottoms up through the
choke.
- A - Open the choke and flow
check, if negative, circulate
bottoms up through the
choke.
- 6 - While making a connection, the driller closing the well due to an
abnormally long flowback time. The stabilized surface pressure were
equal at 150 psi on bolth gauges. You suspect the well is ballooning. after
bleeding the pressure to zero in increment of 50 psi, the pressure stay at
0 psi, Oil based mud is in the hole.
- A - Check for flow - if there is none,
circulate bottom up at a reduced rate so
the shakers can handle the cutting
volume.
- 5 - You are drilling ahead at constant ROP, The
shale shakers cannot handle the amount of
cutting returning from the well. What is the
safest thing to do?
- A - Circulate bottom up
through a full open
choke at a reduced rate.
- 4 - What is the proper things to
do before continuing the
operation after ballooning has
been confirmed the first time?
- A - Increase in shale density
- 3 - Which of the following
is not a warning sign of
an increasing formation
pressure
- A - Increase salinity
and Increase in gas
content
- 2 - When drilling into a
transition zone, what
two change would you
expect to see in the
mud.
- A - Mechanical reduction
of hydrostatic pressure
- 1 - What is suabbing
- Questions
- Complacency
- Poor planning
- Lack of training
- Human failures
- Alarm not work properly
- Loss of accumulator fluid or pressure
- BOP failing to operate
- Shears not separating pipe
- Loss of seal on choke
- Washout in choke
- Pump failure
- Washout in string
- mechanical failures
- Phenomenon that occurs
when the formations takes
mud When the pumps are on,
then given it back when the
pumps are of.
- Balloning formations
- A smaller diameter
channel worn in to the
side of the larger
diameter wellbore
- Key seating
- Occurs when the mud
pressure on the outside
of wall of the drill pipe is
greater than formation
pressure
- Differential sticking
- Stuck pipe migration
- In this case many
kicks result
because reducing
hydrostatic
pressure during
the operation.
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