OG90
Course Contents
Module 1: Casing and Cementing Fundamentals
Key Topics
- Role of casing and cementing in well construction
- Well objectives, design basis and construction sequence
- Conductor, surface, intermediate and production casing
- Liners, tiebacks and contingency casing applications
- Zonal isolation objectives and life-of-well integrity
- Formation pressure, fracture gradient and casing points
- Well barriers, integrity requirements and acceptance criteria
Module 2: Casing Design, Selection and Running Operations
Key Topics
- Casing size selection and hole section planning
- Burst, collapse, tension and triaxial design concepts
- Casing grades, weights, connections and design factors
- Casing wear, buckling, fatigue and thermal loading
- Material selection for corrosion, H2S and CO2 exposure
- Casing running, handling and make-up good practices
- Running risks, stuck casing and contingency planning
Module 3: Cementing Design and Job Planning
Key Topics
- Cementing objectives for support and zonal isolation
- Cement slurry properties and laboratory testing basics
- Spacer design, fluid compatibility and mud removal
- Centralisation, standoff and displacement efficiency
- Primary cementing methods and placement techniques
- Cement volumes, excess, returns and job calculations
- Gas migration prevention and cement sheath integrity
Module 4: Cement Evaluation and Zonal Isolation Assurance
Key Topics
- Cement bond logs and ultrasonic evaluation principles
- Interpreting bond quality, channels and cement coverage
- Micro-annuli, debonding and poor isolation indicators
- Pressure testing, negative testing and barrier verification
- Integrating cement logs with well and formation data
- Sustained casing pressure and annular communication risks
- Decision criteria for accepting cementing results
Module 5: Remedial Cementing, QA/QC and Lessons Learned
Key Topics
- Common casing and cementing failure mechanisms
- Remedial cementing, squeeze jobs and isolation repairs
- Plug cementing, abandonment and long-term barriers
- Cementing job monitoring, reporting and post-job review
- QA/QC for materials, equipment and operational execution
- Management of change during casing and cementing operations