The Specialist

We've got the experience to get the job done right.

  • 52Years in Underground Storage
  • 32Years in Subsurface Injection
  • >400Years of Engineering Experience
About Geostock Sandia

Geostock Sandia.

Bringing the best together to provide superior underground storage and subsurface injection services in North America and Mexico.


A preeminent supplier of underground storage and subsurface injection services, Geostock Sandia combines industry leadership in the design, construction, operation, and maintenance of underground storage facilities with proven, innovative permitting, engineering, and field services in subsurface injection of liquid and gaseous fluids.


We work with you, for you.

We understand that each challenge is unique and work closely with our clients to develop the right solution for their specific project. As a company with owner-operator roots, we also share your need to solve geologic and energy infrastructure problems safely, efficiently, and cost effectively. To that point, we focus on solving challenges using a phased project structure that reduces cost exposure, mitigates risk and creates lasting value.


Learn More About Our Expertise

Injection and Storage Services

Services as comprehensive as our expertise. Safety above all.

Client centric and solution oriented, we offer a comprehensive range of technical services, expertly delivered for our clients. Around the world, wherever we work, we also put our proactive HSE philosophy to work. We believe that zero injuries is an attainable goal and are faithful to our Safety First culture, every day, on every project.


Geostock Sandia is part of the Underground Infrastructure group of Entrepose, an international engineering and contracting firm owned by Vinci – a Global 500 Company and worldwide developer, contractor and operator of public and private infrastructure projects.