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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

  • Classification of cement

  • Cement hydration

  • Cement additives

    Primary Cementing Calculations

  • Conductor Pipe o Volumes including excess
    ▪ Lead and Tail sacks

    of cement required
    ▪ Displacement
    ▪ Upward/Downward Forces
    ▪ Critical Circulation Pressure

  • Surface Casing
    ▪ Volumes including excess ▪ Lead and Tail sacks of

    cement 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 cement

    required
    ▪ Displacement
    ▪ Upward/Downward Forces

  • Production Cementing
    ▪ Volumes including excess ▪ Lead and Tail sacks of

    cement 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

  • Mud removal

  • Mud channeling

    Primary Cementing Calculations

  • 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 in

    Day 4

    Review

    Plug Cementing

  • Reasons for setting cement plugs

  • Placement methods

  • Slurry design considerations

  • Cement plug aids

▪ Height of cement ▪ Displacement
▪ Pump Schedule

Squeeze Cementing

  • Squeeze techniques

  • Squeeze Applications

  • Squeeze tools

  • Slurries

  • Squeeze job execution procedures

    Squeeze Calculations

    ■ Volumes
    ■ Pressure to reverse one barrel

    of cement from work string
    ■ Minimum water requirements ■ Displacement volume to spot

    cement 1 bbl. above packer
    ■ Pressure to reverse cement when

    spotted
    ■ Pressure to reverse cement from

    work string when cement reaches

    top perforations
    ■ Pressure to reverse cement from work

    string when cement reaches bottom

    perforations
    ■ Pressure to reverse out from work

    string when job is completed
    ■ Amount of cement in perforations

    Day 5

  • Review

  • Test for Conductor, Surface,

    Intermediate and Production

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Citadel for Technological and Engineering Dev. (CITED), a leading organisation in rendering quality service in Corporate Training, Manpower Development and Continued Professional Development (CPD) of Engineers, Technologist and Technicians have been in existence for over twenty years bringing quality service to Nigerians and Nigerian Engineers. Our portfolio of programs is renowned for its breadth and depth of focus, the caliber of its speakers, its interactive, practical and result-orientated nature, and the diverse and national range of participants. It is an excellent networking opportunity.

CITED programs also offer concrete toolkits of effective and practical techniques, strategies and skills to take away. The content continually evolves in response to new business. Our workshops are designed specially for individuals interested in or currently using engineering/technical expertise/skills and technologies to solve their organisation challenges.

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