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    Build Trust, Build a Better Tomorrow

    OIEC is perfectly capable of implementing projects from conceptual design through engineering, procurement, construction, commissioning and operation…

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    A Group of Experts;
    A Chain of Value

    OIEC has organized professional subsidiaries each a leading expert in their own field…

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    Team Building Is
    Part of Our DNA

    One of the reasons for success of OIEC, is concentrating on the development and promotion of human assets...

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    Safety Is Not Just a Priority, It Is a Value

    At OIEC it is recognized that excellence in HSE is essential to the success of business…

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    From Bottom of the Seas to Refineries

    OIEC is now capable to render a wide range of upstream and downstream services…

About OIEC

OIEC Group is a leading general contractor (GC) in Engineering, Procurement, and Construction (EPC) projects, with a particular focus in Iran’s Oil and Gas industry. OIEC has been operating nationwide for over three decades with a committed workforce to the success of our clients.


  • Downstream

    Projects Management, Engineering, Procurement, Construction, Commissioning, Start-up and Operation of:
    Oil and Gas Refineries
    NGL Plants
    Petrochemical Plants
    Oil and Gas Pipelines
    Terminal and Storage Facilities

  • Upstream

    Developing Onshore and Offshore fields by providing Upstream Services including:
    Exploration Studies such as MDP Preparation
    Geology, Petro-Physics and Geophysics Services
    Drilling Completion & Well Services
    Commissioning and Startup

Social Responsibility

OIEC Group is focusing its responsibilities on environment, people and society as a critical factor to be able to continue operating effectively. We believe that communicating with the people who are affected by our operations is greatly important. To achieve this, we were able to deliver what we promised such as building schools in Assaluyeh and Shoush.

OIEC Subsidiaries

  • Energy Industries Engineering and Design (EIED), founded in 1996, was initially formed as the engineering arm of OIEC to promote the knowledge and technology for design and engineering. Since then, the company has also obtained a leading role in execution of projects in oil, gas and petrochemical industries and is known as one of the most capable EPC contractors especially in downstream projects.

  • Oil and Energy Industries Development (OEID) was established in 1997 as a subsidiary of OIEC. The company’s core area of expertise is in upstream projects, including oil and gas exploration, field development and related upstream engineering services.

  • Kish Petroleum Engineering (KPE), was incorporated in 1999 as a subsidiary of OIEC Group to provide upstream engineering services. Relying on two decades of experience in Iranian oil and gas industry, with remarkable technical expertise and know-how, the company is now capable of rendering a wide range of upstream consultancy and operational services including geoscience studies, reservoir engineering, drilling engineering and operation, production and completion engineering, surface facilities design, field studies and preparation of Master Development Plans (MDP).

  • Oil Industries Commissioning and Operation (OICO) was incorporated in 2011 as the arm of OIEC to meet the increasing needs for an up-to-date, systematic and professional approach to lead pre-commissioning, commissioning and operation stages of a noticeable number of projects in the local and regional markets.

  • Sarvak Azar Engineering and Development Co. was founded in partnership with Ahdaf Investment Company and OIEC in March of 2012 to implement Azar Oil Field Project as an entirely Iranian company relying on local experience and knowledge of oil and gas development.

  • Oil Exploration Operations Company (OEOC) is one of the most reputable private companies in the upstream sector of Iranian oil and gas industry. OEOC has obtained latest technical knowhow and vast experiences in the upstream of oil and gas projects. The company commenced its operation in two different fields of exploration operations and integrated drilling services.

  • Qeshm Oil Investment Company (QOIC) (Private Joint Stock) has been registered in 2004 in Qeshm free zone. QOIC strategically invests on oil and gas upstream and midstream sectors. As an investment company, it can define many cooperative ways to develop investment projects such as BOO, BOT, EPCF.

  • Oil Design & Construction Company (ODCC) was founded in 1991. The Company has since taken major steps to become capable of rendering a complete range of EPC services in the energy sector. ODCC is a comprehensive service provider from conceptual designs, to turnkey mega projects within the energy industry. Today ODCC is considered as one of the most capable companies to be involved in EPCM activities within the energy industry in Iran.


International Partners, Clients and Contractors

Development of Soroush & Nowrooz Oil fields

Darkhovin Oil field

Shah Deniz Gas Filed

Conceptual study of Kian Petrochemical Complex

Shah Deniz Gas Filed

Khorasan Petrochemical Complex

Shah Deniz Gas Filed

Shah Deniz Gas Filed

Torkmanbashi Gasoline Plant

Shah Deniz Gas Filed

AmirKabir 6th Olefin Plant Detail/Field Engineering and Procurement
Maroun 7th Olefin Plant Detail/Field Engineering and Procurement

Zagros Mega Methanol Project

Basic Design of South Pars Gas Field Development phase 1 (Onshore)

Front End Engineering and Design of South Pars Project Phases 17&18

Shah Deniz Gas Filed

South Pars Project, Phases 9 & 10
Acetic Acid Plant Detail Engineering

Siraf SRIC Basic Project

Nowrooz Oil Field Master Development Plan