1|Page
Texas Well Driller License EXAM||Verified Questions
and Correct Answers with EXPLANATIONS||NEWEST
EXAM!!
Pressure should be bled off the casing before
______________
a. The top plug ruptures.
b. The cement sets, so the pipe will not bulge.
c. The valve in the float collar closes.
d. None of the above. - Answer-B
Which of the following substances can be used as
displacement fluid?
a. Seawater
b. Fresh water
c. Drilling fluid
d. All of the above - Answer-d. all of the above
In determining the volume of an open hole with the
diameter-squared method, a slightly larger figure for
diameter should be used to allow for _______________
,2|Page
a. Larger casing ID.
b. Hole enlargement
c. Errors in calculation
d. An extra amount of cement slurry as a safety factor. -
Answer-B
An operator desiring to lower the density of cement slurry
may do so by adding all of the following except
__________________
a. Perlite
b. Bentonite
c. Barite
d. Salt - Answer-C & D
Squeeze cementing is considered a method of
____________________
a. Primary cementing
b. Plug-back cementing
c. Secondary cementing
d. None of the above. - Answer-C
,3|Page
The purpose of using a pre-flush in cementing operations
is ___________________
a. Accelerate the setting time.
b. Remove some of the wall cake.
c. Provide a spacer between the drilling mud and the
slurry.
d. Increase the density of the slurry. - Answer-B & C
The best temperature range for slurry is _____________
a. Below 60oF to prevent water loss from evaporation.
b. Between 60oF and 90oF as it goes into the well.
c. Between 90oF and 100oF as it goes into the well.
d. Higher than 100oF to ensure proper viscosity. - Answer-
B
Benefits derived from using a bottom plug in the
cementing operation include ____________
a. Wiping mud film from inside the casing.
b. Reducing slurry contamination.
c. Preventing entry of air into slurry.
d. All of the above - Answer-A & B
, 4|Page
List four different possible purposes (important reasons)
for using cement in a well. - Answer-a) Isolation of casing
shoe
b) Isolation of production zones - prevent cross-flow
between intervals at different pressures
c) Protection of water zones - prevent drilling fluid
contamination of aquifers
d) Isolation of problem interval - extreme losses, well
control, side-track
e) Protection of casing - from corrosive formation fluid
f) Casing support - support for surface casing, for
example.
List four types of cement jobs (applications) that were
discussed in class. - Answer-a) Cementing casing
b) Setting cement plugs
c) Squeezing cement at casing shoe
d) Repair casing leaks
e) Seal off perforations
f) Combat loss circulation problems, etc.
Texas Well Driller License EXAM||Verified Questions
and Correct Answers with EXPLANATIONS||NEWEST
EXAM!!
Pressure should be bled off the casing before
______________
a. The top plug ruptures.
b. The cement sets, so the pipe will not bulge.
c. The valve in the float collar closes.
d. None of the above. - Answer-B
Which of the following substances can be used as
displacement fluid?
a. Seawater
b. Fresh water
c. Drilling fluid
d. All of the above - Answer-d. all of the above
In determining the volume of an open hole with the
diameter-squared method, a slightly larger figure for
diameter should be used to allow for _______________
,2|Page
a. Larger casing ID.
b. Hole enlargement
c. Errors in calculation
d. An extra amount of cement slurry as a safety factor. -
Answer-B
An operator desiring to lower the density of cement slurry
may do so by adding all of the following except
__________________
a. Perlite
b. Bentonite
c. Barite
d. Salt - Answer-C & D
Squeeze cementing is considered a method of
____________________
a. Primary cementing
b. Plug-back cementing
c. Secondary cementing
d. None of the above. - Answer-C
,3|Page
The purpose of using a pre-flush in cementing operations
is ___________________
a. Accelerate the setting time.
b. Remove some of the wall cake.
c. Provide a spacer between the drilling mud and the
slurry.
d. Increase the density of the slurry. - Answer-B & C
The best temperature range for slurry is _____________
a. Below 60oF to prevent water loss from evaporation.
b. Between 60oF and 90oF as it goes into the well.
c. Between 90oF and 100oF as it goes into the well.
d. Higher than 100oF to ensure proper viscosity. - Answer-
B
Benefits derived from using a bottom plug in the
cementing operation include ____________
a. Wiping mud film from inside the casing.
b. Reducing slurry contamination.
c. Preventing entry of air into slurry.
d. All of the above - Answer-A & B
, 4|Page
List four different possible purposes (important reasons)
for using cement in a well. - Answer-a) Isolation of casing
shoe
b) Isolation of production zones - prevent cross-flow
between intervals at different pressures
c) Protection of water zones - prevent drilling fluid
contamination of aquifers
d) Isolation of problem interval - extreme losses, well
control, side-track
e) Protection of casing - from corrosive formation fluid
f) Casing support - support for surface casing, for
example.
List four types of cement jobs (applications) that were
discussed in class. - Answer-a) Cementing casing
b) Setting cement plugs
c) Squeezing cement at casing shoe
d) Repair casing leaks
e) Seal off perforations
f) Combat loss circulation problems, etc.
