Chairs: Mark Clapp, Baker Hughes; Manuel Marya, SLB

The key chemical reactions involved with CCS material performance will be discussed in this session.  The important differences versus typical oil field environments, such as the presence of oxygen and contaminants will be addressed.   Downhole interactions in depleted O & G reservoirs or Saline zones will be considered.

Presentations:

Insights on Thermodynamics Acid Formation Impacting Material Performance              
Evin Harold, Vallourec            

The Importance of Water Phase Behavior and How it Affects Material Selection Processes in CO2 Wells               
Chris Harper, Baker Hughes

Alteration of Formation Fluids at the CO2 Saturation Front            
Julie O'Leary, Burns and McDonnell

Chairs: James Cron, Geostock Sandia; Russell Bentley, WSP

Topics to be covered are CCS well design, including how to plan for and mitigate low pH reservoir influences (external issues), borehole conditions (internal issues), and wellhead and Christmas Tree (surface issues). We will build off earlier discussions in Session 1 and begin to incorporate tangible design criteria that pertain to specific operational PVT conditions. For example, what are the operating ranges of pressures, volumes (rates), or temperatures expected, and how should those guide the design? How “pure” or “water-free” is the CO2 to be injected, and how do various contaminants, such as free oxygen in the injectate and the Cl⁻ content in the reservoir fluid, affect the choice of construction materials?  Finally, we'll address practical considerations for material selection, given concerns around availability, lead times, and cost, which may impact project viability.

Presentations:

Long Term CCS Completion - Design and Metallurgy Review        
Jose Iguaz, Baker Hughes     

Specification of Standard Materials for CCS Wellbore Completions       
Paul Maxwell, CRA 

CO₂-Resistant Cement Systems: Design Principles and Deployment in CCS Wells 
Geoff Landry , SLB     

Chairs: Jalal Jalali, Blue Sky Infrastructure; Manuel Marya, SLB

This session will give an overview of the construction materials currently in use and also in need of new testing and qualification.  Primarily covered are existing API 5CRA and proprietary grades for tubulars, wellhead and completion equipment.  Key questions include: (1) determining the right environmental parameters to properly set up test lab testing to replicate downhole conditions. (2) determining the types of lab and scaled-up tests in that need to be performed (e.g., corrosion and others), and of key importance (3) the outcome from the tests that deem the material suitable for use in tubulars, wellhead or completion equipment (including acceptance criteria).

Presentations:

Screening of Tubular Materials for CCUS: Chloride Ion, Impurity Levels
Atsushi Soma,  Nippon Steel North America       

Corrosion Behavior of Martensitic Stainless Steels in CO₂-Saturated NaCl Solutions Containing Multiple Impurities        
Ryosuke Tachi, JFE Steel        

Perspective on Material Selection and Testing for CCS Well Completions           
Khlefa Esaklul, OXY  

Chairs: Sarah Chan, U.S. DOE; Will Lamberth, Onium Engineering

This session will expand on specific test outcomes and the role of modeling in assessing corrosion evolution over longer-time. We will contemplate the potential as well as any challenges associated with new/proprietary material grades for application in CCS.  Coated/lined tubulars and other down-hole non-metallics will be discussed as well as the application/effectiveness of existing corrosion models for these materials.        

Presentations:

Progress and Challenges Associated with Modeling of CO2 Corrosion in Downhole CCS Applications                
Srdjan Nesic, Ohio University, Institute for Corrosion and Multiphase Technology         

Managing Corrosion in CCS Wells Through Proper Coating Selection and Evaluation
Michael Adams, NOV