Energy Transition | Carbon Capture, Storage and Utilisation
This course covers the design specifics of CO2 injection wells. Such wells may be existing or new wells which need to be designed with the challenges of CO2 injection in mind. The design includes the casing, cement, completion and all associated equipment. The challenges covered included potentially highly corrosive (to metals and cements) fluids, large temperature changes associated with potential phase changes and the long-term integrity requirements. In addition to casing design and cement design, equipment selection (such as packers with their associated elastomers) and tubular connections will be examined for their suitability for CO2 injection. Legacy offset wells will be examined for potential leak paths over the long-term. Examples from existing and planned schemes will be reviewed throughout.
Duration and Training Method
This is a classroom or virtual classroom course comprising a mixture of lectures, discussions, and case studies. Exercises include hand calculations that will be used along with a demonstration of software (Oliasoft WellDesign). This course includes e-learning elements that provide background content on Carbon Capture and Storage that serves to provide an introduction to the subject matter:
- EC003 Fundamentals of CCS
- EC005 Behaviour of CO2 in Reservoirs
- EC006 Monitoring CO2 Storage
Participants will learn to:
- Evaluate well integrity with respect to CO2.
- Consider the challenges that CO2 gas versus dense phases present and undertake PVT calculations.
- Assess the corrosive impacts of CO2 including the impact of stress corrosion at low temperatures.
- Formulate stress calculations for the liner, production casing and tubing.
- Analyse the issues of cement design for CO2 wells, including both legacy and new well designs.
- Examine the issues involved in repurposing existing wells with reference to existing casing designs and cement evaluation.
- Construct risk assessments and understand monitoring technology and regulatory frameworks.
The self-paced e-learning elements of this course are
- Fundamentals of CCS
- Behaviour of CO2 in Reservoirs
- Monitoring CO2 Storage
- Overview, global and subsurface perspective
- Well integrity perspective with respect to CCS - Short vs. long-term and existing vs. new design
- The volume challenge with CO2 and facilities challenges, including calculations – gas vs. dense phase
- PVT Properties of CO2 with phase envelope and enthalpy
- Associated thermal calculations for CCS - the potential for large cooling
- Worked Example using PVT and enthalpy calculations
- Example using demo software (Oliasoft WellDesign)
- Corrosion and material selection with specific reference to CO2
- Wet vs. dry CO2
- Stress corrosion cracking at low temperatures
- Worked example using partial pressures and corrosion experimental data
- Tubular material properties and asymmetry/ anisotropy as well as temperature dependent yield and coefficient of thermal expansion
- Working stress calculations and well design
- Formulate hand calculations and software input
- Simple hand calculations using Session 2 temperatures for the liner, production casing and tubing
- Worked Example demo using software of tubing, liner and production casing
- The specific difficulties with the VME / Design limit plot
- Well design with reference to the cap rock and cap rock fracturing and cap rock strength reduction
- Equipment and tubular connections. CAL III and CAL IV ISO testing and connection envelopes
- Cement design for CCS – legacy vs. new well designs
- Repurposing existing wells with reference to existing casing designs and cement evaluation
- Managing offset to injection legacy suspended and abandoned wells
- Example from Goldeneye
- Risk assessments, monitoring technology and regulatory framework
Who Should Attend and Prerequisites
Attendees should be capable well engineers (completions or drilling) or technical specialists such as chemists, geomechanics, or material specialists.
A first-class degree in geophysics and a masters degree in Petroleum Engineering were a prelude to 6 years with BP as a petroleum engineer. Jonathan left BP and, following a short spell in Camco, jointly founded ICE Energy. After 6 years of completions and petroleum engineering consultancy and training, ICE Energy merged with TRACS International, which has now been acquired by AGR, where Jonathan continues with petroleum and completion engineering studies, leading integrated teams, and developing / delivering training courses in diverse world-wide locations. He is the author of the respected “Well Completion Design” book, published in 2009 by Elsevier.
Affiliations and Accreditation
MEng Petroleum Engineering, Heriot-Watt University
BSc Geophysics, University of Edinburgh
N592: Well Engineering for CO2 Storage Applications
N940: Modern Completion & Production Enhancement Techniques
N998: Well Completion Design