Details
Synopsis:
Cementing plays an important role in an oil well construction. Cementing provides zonal isolation, protection of casing from corrosive formation fluids, drilling shocks, burst and collapse. This is why it is important to ensure that the right cementing techniques are used to provide the best value to your well.
The course focuses on primary cementing and remedial cementing. As well as understanding the theory of well design, practical considerations are also included such
as volumes, sacks of cement, pressure to pump the plug, displacement, burst pressure of pipe, upward/downward forces and buoyancy. Cement additives selection, lab testing, annular gas migration and best practices for cementing operations are introduced to enable
the participant to make a more economical choosing of a cement design.
Outline
Day 1
Introduction- meet the class!
Introduction to Cementing
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Classification of cement
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Cement hydration
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Cement additives
Primary Cementing Calculations
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Conductor Pipe o Volumes including excess
▪ Lead and Tail sacksof cement required
▪ Displacement
▪ Upward/Downward Forces
▪ Critical Circulation Pressure -
Surface Casing
▪ Volumes including excess ▪ Lead and Tail sacks ofcement required
▪ Displacement
▪ Pressure to land the plug
▪ Upward/Downward Forces
▪ Critical Circulating Pressure
Day 2
Review of what we discussed on Day 1
Basic Slurry Design
■ Slurry Design as a liquid ▪ Slurry density
▪ Thickening Time
Primary Cementing Calculations
-
Intermediate Casing o Volumes including excess
▪ Lead and Tail sacks of cementrequired
▪ Displacement
▪ Upward/Downward Forces -
Production Cementing
▪ Volumes including excess ▪ Lead and Tail sacks ofcement required
▪ Pressure required to land plug ▪ Displacement
▪ Upward/Downward Forces -
Absolute Volume Calculations oWater Requirement
▪ Yield
▪ Density
Day 3
Review
Preparing the well for cement
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Mud removal
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Mud channeling
Primary Cementing Calculations
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Bulk
▪ Introduction to the bulk plant ▪ Bulk plant terminology
▪ Loading Procedures
▪ Calculations for bulk -
Liners
▪ Volumes▪ Displacement
▪ Pressure to land the plug ▪ TOC Drill Pipe out
▪ TOC Drill Pipe inDay 4
Review
Plug Cementing
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Reasons for setting cement plugs
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Placement methods
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Slurry design considerations
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Cement plug aids
▪ Height of cement ▪ Displacement
▪ Pump Schedule
Squeeze Cementing
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Squeeze techniques
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Squeeze Applications
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Squeeze tools
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Slurries
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Squeeze job execution procedures
Squeeze Calculations
■ Volumes
■ Pressure to reverse one barrelof cement from work string
■ Minimum water requirements ■ Displacement volume to spotcement 1 bbl. above packer
■ Pressure to reverse cement whenspotted
■ Pressure to reverse cement fromwork string when cement reaches
top perforations
■ Pressure to reverse cement from workstring when cement reaches bottom
perforations
■ Pressure to reverse out from workstring when job is completed
■ Amount of cement in perforationsDay 5
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Review
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Test for Conductor, Surface,
Intermediate and Production
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