tubing and casing design

Course Description

The course emphasizes the practical application of casing design principles and theory from a basic level through to advanced. It can be tailored for either level. It examines the nomenclature of casing design, the manufacturing processes, materials and properties, the theory of burst, collapse and axial loadings, design policies and procedures, API specifications with review of the theory behind these and their limitations, connections and special cases such as HP/HT and sour service. The course examines the non-API principles of tri-axial design and how this improves upon the limitations of API.

Kick tolerance and its impact on casing seat selection is considered in detail along with the processes of documentation and audit. Substantial emphasis is placed on worked examples beginning with basic practical problems and culminating in a full casing design for a typical well. This is approached from first principles and demands extensive use of mathematics.

Audience

• Drilling and completion engineers 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.

Prerequisites

• Basic knowledge of well design.
• The course requires a solid background in engineering and preferably an engineering degree.

Topics covered

• A full appreciation of the key API Specifications, their origin and their limitations to modern casing design
• Performance properties – definitions
• Casing manufacturing processes, material selection and properties
• Special requirements including HPHT and sour service
• Stress / strain theory and the application to thick-walled cylinders
• The objectives of casing design and the fundamental design principles
• Casing connections
• Mechanical design and design safety factors - burst, collapse and axial loading and integrated tri-axial stress analysis
• Casing seat selection and the importance of kick tolerance
• Pressure testing
• Documentation and audit of the casing design process
• Commercial principles of casing procurement and their impact on casing design
• Casing design examples and practice

Course Schedule

1	Introduction to casing design. Generic policies. Casing nomenclature, materials and properties, carbon and non-carbon steels API Specifications - their origin and limitations Non-API casing grades and specifications Engineering definitions - stress, strain, elasticity, yield etc. Metallurgy and the manufacturing process Inspection and NDT Exercises
2	Objectives of casing design - casing and well types Casing design concepts - stress analysis Tri-axial design principles Additional design factors - temperature, sour service, fatigue, buckling Casing connections - premium versus API Exercises
3	The design process - offset well data, hole size considerations, testing and completion factors, company policies Casing design - external, internal and axial loading Special load design considerations Casing seat selection - principal criteria and design factors Kick tolerance Leak-off tests Pressure testing Exercises
4	Computer modelling and the application to advanced casing design Casing procurement and the impact on the casing design process Tenders and contracts Specifications Inspection Casing transportation, storage and running procedures Exercises
5	Casing design project - designing a complete well casing programme Computer Aided Casing Design

Instructors

Mr. David Marshall, Mr. David Humphrey, Mr. Peter Erpelding, Mr. Steve Redgrave, Mr. John Magill, Mr. Denis Gaudet

Instructors may vary based on location and schedule.

Classes

No classes are currently scheduled for this course.

Add yourself to the waiting list

We will schedule a class for this course, when there are enough participants on the waiting list.