Insights

Strategic Partnership Geostock is a Vinci Construction Grands Projets subsidiary with international reach and a focus on underground storage facilities. Opportunity: leverage parent company relationships and cross-sell integrated engineering and construction services to expanded energy storage projects and energy transition initiatives.

Underground Storage Leadership Core competency in salt caverns, mined caverns, and porous reservoirs across the lifecycle of storage facilities. Opportunity: upsell consulting, design, and operations support for new storage developments, expand services to both new and existing clients pursuing storage modernization or capacity expansion.

Recent Collaborations Recent partnerships with Vallourec, Fluxys, and Air Liquide indicate active collaboration with major industry players and utilities. Opportunity: target similar energy players and midstream/industrial customers for joint projects, leveraging credibility and case studies from these alliances.

Tech Enablement Utilizes Power BI, SAP, Office 365, Teams and other enterprise tools. Opportunity: offer data analytics, digital twin, and maintenance optimization solutions that integrate with clients’ ERP/BI ecosystems to improve efficiency, risk management, and lifecycle cost control.

Financial Reach Revenue in the $10M–$25M range with 201–500 employees; established international footprint and proximity service model. Opportunity: position as a scalable engineering partner for mid-sized to large underground storage programs, including expansions, retrofits, and long-term O&M contracts.

Similar companies to Geostock

Geostock Tech Stack

Geostock uses 8 technology products and services including Power BI, WordPress, SAP, and more. Explore Geostock's tech stack below.

Geostock's Email Address Formats

Geostock uses at least 4 email formats:
Geostock Email FormatsExamplePercentage
First.Last@geostock.frJohn.Doe@geostock.fr
89%
FL@geostock.frJD@geostock.fr
4%
Last.First@geostock.frDoe.John@geostock.fr
3%
First.Middle@geostock.frJohn.Michael@geostock.fr
4%

Frequently Asked Questions

What is Geostock's phone number?

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You can contact Geostock's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Geostock's official website and social media links?

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Geostock's official website is geostockgroup.com and has social profiles on LinkedIn.

How much revenue does Geostock generate?

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As of August 2026, Geostock's annual revenue is estimated to be $10M - $25M.

What is Geostock's SIC code and NAICS code?

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Geostock's SIC code is 7299 - Miscellaneous Personal Services, Not Elsewhere Classified and NAICS code is 211 - Oil and Gas Extraction.

How many employees does Geostock have currently?

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As of August 2026, Geostock has approximately 260 employees across 4 continents, including Europe, North America and Asia. Key team members include Chief Executive Officer Of Geostock: P. B., President & Ceo: J. N. and Head Of Drilling And Well Intervention Department: J. L. Explore Geostock's employee directory with LeadIQ.

What industry does Geostock belong to?

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Geostock operates in the Oil and Gas industry.

What technology does Geostock use?

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Geostock's tech stack includes Power BI, WordPress, SAP, Shopify, Sage, Microsoft Active Directory, Office 365 and Microsoft Teams.

What is Geostock's email format?

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Geostock's email format typically follows the pattern of First.Last@geostock.fr. Find more Geostock email formats with LeadIQ.

When was Geostock founded?

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Geostock was founded in 1965.
Geostock logo

Geostock

Oil and GasÎle-de-France, France201-500 Employees

Geostock is an international firm based in Rueil-Malmaison, Île-de-France, specializing in underground energy storage. With around five decades of experience, it delivers services across the full lifecycle of storage facilities—from concept and design to construction management, operation and maintenance—regardless of storage method or product. Its multi-skilled staff work with salt caverns, mined caverns and porous reservoirs, and the company operates globally as a subsidiary of Vinci Construction Grands Projets.

The company serves clients in the oil and gas sector by addressing technical and operational challenges throughout a storage project's life. A recent development is a January 2026 partnership with Vallourec to develop infrastructure solutions for the energy transition, underscoring its role in the evolving energy landscape.

Section iconCompany Overview

Phone number
SIC Code
7299 - Miscellaneous Personal Services, Not Elsewhere Classified
NAICS Code
211 - Oil and Gas Extraction
Founded
1965
Employees
201-500

Section iconFunding & Financials

  • $10M - $25M

    Geostock's revenue is estimated to be in the range of $10M - $25M

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