Engineering the
Future of Energy
Infrastructure

Design, implementation and consulting for modern crude oil refineries. Producing all petroleum derivatives to Euro 5 & Euro 6 standards, with 25+ years of proven excellence.

Get in Touch Our Services
About I.O.G.

A Trusted Partner in Energy Infrastructure

International Office Group (I.O.G. Company) has been at the forefront of oil refinery engineering since 2004. Headquartered in Istanbul, Turkey, we specialize in the design, implementation and commissioning of modern crude oil refineries capable of producing the full spectrum of petroleum derivatives.

Our methodology combines cutting-edge technical engineering with rigorous compliance. Every facility we build meets Euro 5 and Euro 6 environmental and quality standards. From feasibility assessment to final commissioning, we serve as a single accountable partner across the entire project lifecycle.

With 276+ completed engagements and 15+ regional offices, I.O.G. brings both global reach and local expertise to every project we undertake.

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Eng. Abulkader Assi, Founder and Consultant Engineer at International Office Group

Eng. Abulkader Assi

Founder & Consultant Engineer

What We Do

Our Core Services

From initial design through full commissioning, we offer end-to-end capabilities across the energy infrastructure spectrum.

Refinery Design & Implementation

Full-cycle engineering, procurement and construction of modern crude oil refineries, designed to produce all petroleum derivatives using the latest technical methods, compliant with Euro 5 and Euro 6 standards.

Oil Logistics Services

End-to-end logistics and supply chain management for crude oil and petroleum products, optimizing transportation, storage and distribution across the entire value chain.

Refinery Sales & Acquisition

Expert brokerage and transaction advisory for the sale, purchase and transfer of operational oil refinery facilities, with full technical due diligence support from our engineering team.

Strategic Planning

Long-range strategic advisory to help energy companies navigate market dynamics, regulatory environments and capital allocation decisions with clarity and precision.

Market Analysis

In-depth market research, competitive intelligence and investment opportunity assessment, providing the data foundation for sound energy sector decisions.

HR & Organizational Structure

Talent acquisition strategy, team structuring and organizational design tailored to energy sector operations, ensuring the right people power every project.

Our Track Record

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Regional Offices
Why I.O.G.

Our Commitment to Excellence

25+ Years of Proven Expertise

From design to commissioning, we have delivered refinery projects across multiple countries with a consistent record of technical quality, budget discipline and on-time delivery. Our track record speaks before we do.

Euro 5 & Euro 6 Compliance

Every refinery we design and implement meets European environmental and quality standards, ensuring regulatory longevity, operational efficiency and access to markets that demand premium compliance.

Full Lifecycle Partnership

We are with you from initial concept through commissioning and beyond. One trusted partner for the entire project journey, eliminating the coordination risk that comes with fragmented project teams.

Get in Touch

Let's Build Something Significant

Whether you are planning a new refinery, exploring an acquisition, or need strategic guidance, we are ready to listen. Reach out through any channel below or use the form.

Phone

+90 552 308 88 45 +90 536 690 48 20

Email

info@iogtr.com abdulkaderassi@iogtr.net

Facebook

facebook.com/iogturkey

WhatsApp

+90 552 308 88 45

Send Us a Message

We respond to all inquiries within 24 hours.