Advanced Casing Design

Advanced Casing Design

OBJECTIVES

• Conduct casing design calculations for different load cases via different methods
• Understand how buckling affects casing design limitations and show an appreciation for mitigating its effects
• Appreciate the effects of temperature and wear on casing design
• Understand how corrosion can reduce casing life / performance, recognize signs of corrosion

WHO SHOULD ATTEND?

• Drilling Supervisor
• Site Drilling Engineers
• Project Engineers
• Operation Engineers

COURSE OUTLINE

DAY 1

• Casing Profile and Casing Setting
• Introduction
• Purpose of Casing
• Casing Profiles and Drilling Scenarios
• Casing Profiles, Onshore Wells, Offshore Wells – Surface Wellhead, Offshore Wells – Surface Wellhead & Mudline Suspension
• Offshore Wells – Subsea Wellhead; Drive, Structural & Conductor Casing, Surface Casing, Intermediate Casing, Production Casing, Liner
• Design Requirements
• Selection of Casing Seats
• Conductor Casing, Surface Casing, Intermediate Casing, Drilling Liner, Production Casing
• Differential Sticking, Geologic Factors
• Casing and Relative Hole Sizes, Standard Casing and Hole Sizes
• Pipe Mechanics
• Pipe Designation Size, Weight, Grade, H2S and CO2 Service
• Tubular Range Lengths & Colour Coding
• Range Lengths
• API Tubular Marking and Color Coding
• Markings
• Color Coding
• Mechanical Properties of Steel
• General
• Stress-Strain Diagram
• Heat Treatment of Alloy Steels

DAY 2

• Material Aspects and Performance Properties
• Connections, API, Proprietary
• Tension, Compression, Internal Yield Pressure
• Collapse, Yield Strength and Threshold
• Fundamental Design Principles
• Burst, Collapse, Tension / Compression
• Triaxial, Buoyancy and Buoyancy Force
• Buckling

DAY 3

• Casing Loading and Design Considerations
•  Tubular Selection – Costs, Service Load Cases
• Standard Load Cases
• Service Life Design Load Equations
• Calculating Procedures, Summary of Equations
• Burst, Collapse, Axial Force (Tension / Compression)
• Triaxial Equivalent Stress Intensity, Example String Design (Hand Calculation, Class Exercise)
• Production Casing and Tubing
• Load Capacity Diagrams
• Load vs. Depth, Design Factor vs. Depth
• Triaxial Load Capacity
• Introduction to TDAS / EXP
• The Well Plan, Design / Analysis

DAY 4

• Special Design Condition
• Casing Wear, Landing Considerations for Long Strings to Prevent Buckling
• Liner Buckling Due to Set Down (Compression)
• Compression and Burst, String to String Load Transfers, Multi String Affairs, Shock Rebound Loads, Trapped annulus pressure build up, and other trapped fluid concepts
• Well Head Growth
• Kick Tolerance
• Torque and Drag, Casing Floatation, ERD Applications
• API Standards Overview
• Quality Providers / Users
• Documents for P.O. Generation
• API Standards
• Specifications, Recommended Practices, Bulletins
• Using API Specifications
• Basic Handling and Running
• Running Procedures, Running Equipment
• Make-up, Thread Compounds
• Special Running Procedures for CRA Products

DAY 5

• Casing Design Workshops
• Solving Examples
• Surface Casing
• Intermediate Casing
• Production Casing
• Liner