Oil Industries Engineering and Construction Company
Oil Industries Engineering and Construction Company, known as OIEC, is a Tehran-based engineering and construction group focused on oil, gas, refining, petrochemical, and energy-sector infrastructure. Its relevance comes from EPC and general-contractor capability in complex industrial projects where procurement, engineering coordination, sanctions exposure, and technical execution are central. For Hormuz Group, OIEC is a major contractor node for understanding Iran’s energy-infrastructure execution capacity.
Market position
OIEC holds a Grade 1 EPC competency certificate from Iran’s Planning and Budget Organization and a Grade 1 Exploration and Production (E&;P) company classification, according to its corporate profile. It also states that it received the Petroleum Ministry’s highest technical evaluation score in 2022.
Operations & footprint
Products and services
Oil Industries Engineering and Construction Company provides engineering, procurement, construction, project management, refinery renovation, oil and gas facilities development, petrochemical infrastructure delivery, construction management, drilling-related support, and industrial plant implementation. Its activity is tied to Iran’s oil, gas, refining, petrochemical, and energy-infrastructure project ecosystem.
Operations and assets
The company reports involvement in South Pars onshore and offshore development, crude-oil and natural-gas pipeline projects, and refinery and petrochemical construction and expansion. It reports completion of more than 140 projects, representing approximately 450 million man-hours; the timing and project-level scope of these figures were not independently detailed in the reviewed evidence.
Geographic footprint
OIEC is predominantly active in Iran and states an ambition to expand into regional markets. No verified operating locations outside Iran were identified.
Ownership & group structure
Ownership
Private company. Detailed ownership structure and ultimate beneficial ownership were not established in the reviewed evidence.
Reported scale
Employees: Staffing exceeds 2,000 qualified personnel; another source cites more than 2,500 personnel. The reporting dates and basis of these figures were not specified. Scale note: An industry-association profile estimates project load at more than US$6 billion, but does not specify the date, methodology or whether this represents current backlog, cumulative value or another measure.
Commercial and investment relevance
In the Hormuz investment graph, OIEC connects oil and gas project execution, refinery and petrochemical infrastructure, EPC services, procurement channels, engineering management, contractor ecosystems, and sanctions-sensitive industrial delivery. It is useful for screening project partners, assessing energy-sector execution risk, mapping procurement bottlenecks, and understanding how large industrial assets are built or upgraded in Iran. Foreign-facing analysis should verify current ownership, active projects, sanctions exposure, financial capacity, procurement history, legal disputes, technical credentials, and counterparty reliability before commercial reliance. For suppliers and project counterparties, OIEC is a potential EPC interface for energy-sector engineering, procurement, construction, commissioning and refinery-renovation work in Iran.
Constraints, risk & compliance
Key risks and constraints
Project counterparties should assess project-specific delivery, procurement, financing, contractual and compliance risks. The reviewed evidence does not provide a current project-by-project performance record or detailed financial information.
Sanctions and compliance considerations
No specific sanctions listing for OIEC or its executives was established in the reviewed evidence. As an Iranian oil and gas-sector contractor, engagement may involve sanctions, banking, technology-export and procurement compliance considerations. Counterparties should conduct sanctions screening and legal due diligence under applicable regimes.
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Connected Intelligence
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Frequently asked questions
Direct answers to the questions most likely to arise when reviewing this profile.
What does Oil Industries Engineering and Construction Company (OIEC) do?
OIEC provides EPC and project-management services for oil, gas and petrochemical projects, covering design, procurement, drilling, construction, commissioning and operation across onshore and offshore work.
Where is OIEC headquartered?
OIEC is headquartered at 2 Pirooz St., South Kamranieh, Tehran 1937956751, Iran.
Is OIEC a public company?
The reviewed industry-association information identifies OIEC as a private company. Detailed ownership and beneficial-ownership information were not established in the evidence pack.
What due diligence is relevant before working with OIEC?
Counterparties should confirm current projects, financial capacity, ownership, contractual performance, technical qualifications and compliance with applicable sanctions, banking and export-control requirements.