This five-day course covers the relevant subjects required to understand the structural mechanics of downhole tubulars. Material aspects, connection selection, performance properties, load cases, design factors, and buckling are just a few of the many topics that are covered. The course is designed to concentrate on the fundamentals, and on the last day, a 3 hour open book casing and tubing design exercise, aimed at consolidating and re-enforcing the principles and design techniques that have been covered during the week is carried out.

Upon successful completion of this course, the delegates will be able to:

ü  Understand the structural mechanics of downhole tubulars

ü  Understand material aspects, connection selection, performance properties, load cases, design factors, and buckling

ü  Apply casing and tubing design techniques

ü  Hand calculation

ü  Learn design Considerations

This course is intended for drilling and completion engineers, well engineers, petroleum, operations and production personnel and service company personnel with a basic knowledge of well design principles through to experienced drilling engineers who desire a more theoretical, detailed knowledge of the subject.

Day 1:

Introduction to Casing and Tubing Design 

·         Objectives

·         Method

Basic Concepts-Purpose of Tubular Strings - In this section the fundamental concepts of casing and tubing design are presented. These elements provide the foundation for the
remainder of the course.

·         Pipe Types

·         Loading Modes

·         Design Factors

·         Pipe Functions

·         Design Requirements

Material Aspects - This section takes an in depth look at the material aspects of design. Basic material science concepts are followed by a detailed look at API 5CT, 5B, and ISO15156.

·         Pipe Mechanics

·         Pipe Designation - Size, Weight, Tolerances

·         Grade

·         Lengths

·         Sour Service

Day 2:

Connections - The components of a connection and connection selection techniques are thoroughly discussed. Upon completion, participants should be able to select an appropriate API or proprietary connection.

·         API

·         Proprietary 

Performance Properties - Rating calculation methods for each of the five design factors are presented in this section. API 5C3 is discussed in detail.

·         Tension

·         Compression

·         Internal Yield Pressure

·         Collapse

·         Yield Strength and Threshold Stress

Fundamental Design Principles - Load calculation methods for each of the five design factors are presented in this section. A significant amount of the lecture is devoted to the correct method for calculating axial load. Buckling calculations are simple once the participants have mastered the above.

·         Conventional and Service Life Design Methods

o   Burst

o   Collapse

o   Tension/Compression

o   Triaxial w/ Class Exercise

·         Buoyancy and Buoyancy Factors

·         Free Body Diagrams w/ Class Exercise

·         Theory of tubular buckling w/ Class Exercise

Day 3:

Casing Loading and Design Considerations - Load cases from various operators are presented and the importance of Load Case rationalization is discussed.

·         Tubular Selection

·         Cost

·         Service Load Cases

Day 4:

Hand Calculation: A comprehensive casing design hand calculation summarizes the methods presented in the course.

1.    Service Life Design Load(s) Equations

a)    Calculation Procedures

b)    Summary of Equations

o   Burst

o   Collapse

o   Axial Load (Tension/Compression)

o   Triaxial Equivalent Stress Intensity

Example String Designs (Hand Calculation, Class Exercise)

a)    Production Casing 

Specialist Design Considerations - a discussion of the more specialist aspects of casing design, for those that are interested:

·         Multi-String Mechanics and Wellhead Growth.

·         Wellhead Lock Device Force Demand

·         Annulus Pressure Build-Up, APB, theory and discussion.

·         Torque and Drag considerations for the running of casing, both flooded casing and extended reach (ERD) floated casing, theory and discussion.

Day 5:

A 3 hour open book casing design exercise to consolidate and re-enforce the course principles and design techniques.

RECAP

A variety of methodologies will be used during the course that includes:

·         (30%) Based on Case Studies

·         (30%) Techniques 

·         (30%) Role Play

·         (10%) Concepts

·         Pre-test and Post-test

·         Variety of Learning Methods

·         Lectures

·         Case Studies and Self Questionaires

·         Group Work

·         Discussion

·         Presentation

This rate includes participant’s manual, Hand-Outs, buffet lunch, coffee/tea on arrival, morning & afternoon of each day.

Daily Course Timings:

    08:00 - 08:20       Morning Coffee / Tea

    08:20 - 10:00       First Session

    10:00 - 10:20       Coffee / Tea / Snacks

    10:20 - 12:20       Second Session

    12:20 - 13:30       Lunch Break & Prayer Break

    13:30 - 15:00       Last Session