Geostock Sandia LLC

Pioneering Underground Energy Storage & Subsurface Injection

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About the firm

Geostock Sandia is a specialist engineering practice focused on underground injection control, carbon capture storage, and subsurface energy infrastructure. It delivers comprehensive Class I-VI injection well services and carbon capture storage solutions tailored to unique project requirements. Drawing on decades of technical experience, Geostock Sandia provides feasibility studies, permitting, well design, operations oversight, and advanced reservoir modeling for geological storage and fluid injection. It operates as a subsidiary of Geostock and is part of the VINCI group.

Firm type
Geotechnical Engineering · Petroleum Engineering · Environmental Engineering

Capabilities

Underground Injection & Well Engineering

Service website

Comprehensive design, permitting, and engineering services for all classifications of underground injection wells.

  • Class I Hazardous & Non-Hazardous Waste Disposal

    EPA-compliant injection well design, permitting for hazardous effluent, and municipal or industrial wastewater disposal engineering.

  • Class VI Carbon Dioxide Sequestration

    Specialized wellbore design, completion engineering, and monitoring system development for geological CO2 storage.

  • Class II & III Injection Wells

    Engineering for enhanced oil recovery (EOR), solution mining for mineral extraction, and salt cavern brine disposal.

  • Well Testing & Operational Support

    Mechanical integrity testing, problem diagnosis, pressure fall-off testing, and fluid injectivity testing.

Subsurface Characterization & Modeling

Service website

Advanced geological, geophysical, and reservoir engineering services to evaluate and simulate underground storage formations.

  • Geological Evaluation & Characterization

    Advanced characterization of subsurface formations to optimize site selection.

  • Reservoir Modeling & Injection Simulation

    Advanced modeling of fluid injection and withdrawal operations on target formations.

Regulatory Compliance & Permitting

Service website

Comprehensive regulatory support, compliance strategizing, and permit application preparation for state and federal agencies.

  • EPA No-Migration Petitions

    Preparation of UIC permits, EPA no-migration petitions, and agency coordination.

  • Class VI Permit Applications

    Strategic planning and preparation of Class VI permit applications for geological sequestration.

  • Regulatory Advocacy & Compliance Strategy

    Extensive underground injection control regulatory experience and established relationships to streamline approvals.

Project Lifecycle & Operations Support

Service website

A phased project methodology from site screening and feasibility through construction and long-term facility closure.

  • Site Screening & Feasibility Studies

    Subsurface surveys, geological characterization, and Front End Engineering Design (FEED) studies.

  • Detailed Engineering & Procurement

    Detailed technical design, well materials compatibility assessment, and equipment procurement.

  • Construction & Drilling Management

    Expert oversight of wellbore installations, facility construction, and drilling.

  • Asset Integrity Management & Operations

    Specialized asset integrity evaluation, mechanical integrity testing, and regulatory compliance maintenance.

Proprietary Subsurface Technologies

Service website

Innovative in-house software and monitoring systems designed to maintain asset integrity and mitigate risk.

  • Asset Integrity Management System (AIMS)

    Specialized tool evaluating and monitoring underground injection well and facility integrity.

  • Analysis and Mitigation of Induced Seismicity (A-MINDS)

    Advanced seismic monitoring technology analyzing and mitigating potential injection-induced seismic events.

  • Gas Underground Storage Thermodynamics (GUST)

    Specialized simulation software for thermodynamic exchanges in salt cavern gas storage.

  • GEOSCOPE Data Platform

    Comprehensive data management system for real-time monitoring of underground injection sites.

Industries

Carbon Capture · Energy Storage · Environmental & Remediation · Food & Beverage · Industrial · Mining · Oil & Gas · Petrochemical

Projects

Strategic Biofuels Class VI Well Permitting

Louisiana · Carbon Capture · 2026 · Client: Strategic Biofuels

Project details

Support for the Class VI injection well permit application for the Strategic Biofuels project, which successfully secured a draft permit from the Louisiana Department of Conservation and Energy.