CCUS Well Integrity Success Using Fit-for-Purpose Cement Designs

Abstract

Defining long-term zonal isolation requirements for any carbon capture underground storage (CCUS) project life cycle is important to support well integrity success. The utility and scope of an underground storage project helps guide the isolation requirements for the well construction phase emphasizing the well design and cementing. Within the domain of cementing, a basis of design approach holistically can evaluate the corrosive risks, isolation requirements, cement installation, and degree of integrity for the anticipated well utility or load cases. The manuscript highlights the results of a field deployed and validated cement design being able to withstand CO2 corrosive exposure helping to achieve zonal isolation for CCUS well construction while managing the anticipated load conditions to ensure wellbore integrity. Several case histories, a 6-month corrosive study performance analysis, and cement integrity modeling support the fit-for-purpose designs helping to deliver well integrity success.