Company lists · Data refreshed September 2026

Top 10 Oil and gas processing companies based in Iran

RevenueBase identified 203 company matches for oil and gas processing companies associated with Iran as of September 2026 and tracks 9,285 professional contacts across them, including 22 with verified work emails. Tehran is the largest hub.

This list covers company matches for oil and gas processing companies associated with Iran, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built
203Companies
9,285Contacts tracked
22Verified emails
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The 10 largest oil and gas processing companies based in Iran

Ranked by team size
Top 10 of 203 company matches for oil and gas processing companies based in Iran, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchTehran, IranHQ recorded Sep 17, 20261,001-5,000869 contacts →

Exact match

“Oil Industries’ Commissioning and Operation Company (OICO) is incorporated to manage and execute commissioning and start-up, operation, maintenance and professional training for…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2Exact matchTehran, IranHQ recorded Sep 17, 20261,001-5,000191 contacts →

Exact match

“We are proud to present over a half century of our history, beginning with formation of the Ofogh Consulting Engineers Company in 1961.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3Exact matchTehran, IranHQ recorded Sep 17, 2026201-500186 contacts →

Exact match

“SeaLand Engineering & Well Services is established through multinational investment.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4Exact matchTehran, IranHQ recorded Sep 17, 2026201-500101 contacts →

Exact match

“Oil and gas production is one of the world’s most exciting and demanding industries.”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5Exact matchMashhad-sarakhs, IranHQ recorded Sep 17, 2026501-1,00097 contacts →

Exact match

“Gas Refinery”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6Exact matchTehran, IranHQ recorded Sep 17, 2026501-1,00094 contacts →

Exact match

“Pars Energy Gostar Drilling and Exploration Company (PEDEX) was established in 1981 as a construction company and a subsidiary of Mostazafan Foundation, and it started its…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7Exact matchTehran, IranHQ recorded Sep 17, 2026201-50086 contacts →

Exact match

“HOW WE ARE ** Palayesh Parsian sepehr is a oil and gas company as subsidiary of Tadbir energy foundation which runs Ethan recovery program including 7 major (2Processing projects…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8Exact matchTehran, IranHQ recorded Sep 17, 2026n/a85 contacts →

Exact match

“Bakhtar Group was established with a development-oriented and knowledge-based and production approach as one of the largest parent companies (refining and petrochemical) with the…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9Exact matchTehran, IranHQ recorded Sep 17, 2026501-1,00070 contacts →

Exact match

“Daniel Petro Company has started its activities since 2010 with the aim of conducting study activities and providing technical and engineering services inside and outside of the…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10Exact matchTehran, IranHQ recorded Sep 17, 2026201-50055 contacts →

Exact match

“SHARGAN was established in 1994 to build an indigenous technological base for design, engineering as well as project management and technical services required by Oil, Gas &…”

Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

Showing 10 of 203 oil and gas processing companies based in Iran

See the full list, filter by size, metro and specialty, and access 22 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas processing companies based in Iran at a glance

As of Sep 17, 2026
0.2%Verified-email coverage
45.7Average contacts per company
51-200Median size (employees)
75.4%Largest-city concentration · Tehran
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
24
11-50
60
51-200
50
201-500
30
501-1,000
11
1,001-5,000
19
5,001-10,000
2
10001+
7

Email recency for this list is measured worldwide rather than for Iran, so it is reported there. Company counts and contact totals on this page are exact for Iran, over 203 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Iran whose business descriptions match “oil and gas processing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 22 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “oil and gas processing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas processing companies are there based in Iran?

RevenueBase identified 203 company matches for oil and gas processing companies associated with Iran as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

OIL Industries Commissioning And Operation Company Oico tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most oil and gas processing companies?

Tehran leads with 153 company records, followed by Isfahan (5) and Ahvaz (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 22 professional contacts with verified work emails tracked across these 203 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.