Assignment Squeeze Cementing
Cement Job Design:
After evaluating the casing, you have determined that a microannulus has formed, and a perforation squeeze must be performed.
About this job:
- The casing is perforated from 7314′ to 7350′.
- A bridge plug is set at 7356′.
- A packer is set at 7200′.
- Neat Class G cement is used (15.8 ppg) to squeeze into the perforations.
- The casing is 7″ 20 ppf J-55 ( 0.0405
). - The packer is run on 2-7/8 6.5 ppf tubing (0.00579 ).
- Assume a 50% excess in volume.
).Calculate:
- The volume of cement needed.
- Assuming the cement was displaced by 39 bbl of displacement fluid, what was the total amount of cement placed behind the casing?
Solution
- Using the table, 7″ 20 ppf casing is 0.0405 . The top packer is at 7200, and the bottom bridge plug is at 7356, for a total of
of cement. - The tubing has a volume of
, of which 38 bbl was displacement fluid. Therefore, there was 
of cement in the tubing.The casing itself contained 6.32 bbl of cement, for a total of 
of cement not in the formation. The total pumped was 10.1 bbl, so 
of cement was placed behind the casing.
of cement.
, of which 38 bbl was displacement fluid. Therefore, there was 
of cement in the tubing.The casing itself contained 6.32 bbl of cement, for a total of 
of cement not in the formation. The total pumped was 10.1 bbl, so 
of cement was placed behind the casing.Assessment Squeeze Cementing
1. Identify the most common and definitive tests for evaluating a squeeze job. (Select all that apply.)
A .Negative pressure test Correct
B .Positive pressure test Correct
C .Acoustic log test
D .Temperature log test
A high-pressure squeeze is used for what purpose?
A .If the speed of the cement job must be increased
B .If perforations or cracks are too small Correct
C .If a packer cannot be used
What parameters must be monitored during a cement squeeze? (Select all that apply.)
A .Density and remaining volume of fluids as they are pumped Correct
B .Density and volume of fluids returned through the annulus Correct
C .Pressure and pump rate Correct
D .Hydraulic bonding
E .Circulating temperature
What is the purpose of an injection test?
A .Identify which perforations are open.
B .Determine proper pump rate and pressure for the squeeze. Correct
C .Determine the likely length of a fracture created during the squeeze job.
What are the most common reasons for a squeeze job failure? (Select all that apply.)
A .Improper packer location Correct
B .Inaccurate volume calculations
C .Mud contamination
D .Plugged perforations Correct
E .Improper slurry selection Correct
F .Improper cement density
G .Excessive squeeze pressure Correct
A squeeze cement job __.
A .pumps cement slurry through a drill pipe into a liner
B .uses pump pressure to squeeze cement slurry through an opening to fill a void Correct
C .places cement within the casing
In designing a slurry for squeeze cementing, which of these two parameters are most important in ensuring that a competent filter cake can form within a reasonable time period? (Select all that apply.)
A .Viscosity
B .Permeability Correct
C .Long term acid resistance
D .Setting time
E .Fluid loss Correct
What are common reasons for squeeze cementing? (Select all that apply.)
A .Repairing primary cementing jobs Correct
B .Permanently abandoning a well
C .Repairing casing leaks from split or corroded casing Correct
D .Abandoning non-productive or depleted perforated intervals Correct
E .Cementing a horizontal lateral interval
Recommended for You
Introduction to Well Cementing
Chemistry and Classification of Oil well Cements
Cement Slurry Flow Properties and Mud Displacement
