Geostock Sandia provides world class services in underground storage, subsurface injection, and associated surface facilities, team with our EPC partners, offering comprehensive engineering support for Class I–VI injection wells—including CO₂ sequestration well design—while delivering specialized expertise in carbon dioxide geological sequestration, Class VI permit preparation, and innovative subsurface engineering injection solutions; supported by four decades of experience, the company has completed hundreds of injection well projects (drilling, sidetrack, workover) and prepared more than 20 Class VI CO₂ sequestration permit applications, installed the third class VI injection project in the US, all delivered through a phased project methodology that enhances regulatory compliance, reduces risk, and creates long term project value.