Company lists · Data refreshed September 2026

Top 25 Oil and gas processing plant contractors based in Qatar

Name: Oil and gas processing plant contractors based in Qatar
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 63 companies tracked

RevenueBase identified 63 oil and gas processing plant contractors headquartered in Qatar as of September 2026 and tracks 8,210 professional contacts across them, including 1,081 with verified work emails. Doha is the largest hub.

This list covers oil and gas processing plant contractors headquartered in Qatar, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

63Companies

8,210Contacts tracked

1,081Verified emails

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The 25 largest oil and gas processing plant contractors based in Qatar

Ranked by team size

Top 25 of 63 oil and gas processing plant contractors based in Qatar, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas processing plant contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Qatar Engineering & Construction Company W.L.L	Strong evidence	Ras Laffan Industrial City (rlic), QatarHQ checked Sep 17, 2026	5,001-10,000	2,222 contacts →
	Strong evidence “Qatar Engineering & Construction Company (Qcon) is the leading National EPC & Maintenance Contractor in the Oil & Gas, Petrochemical, Fertilizer and Power industries.” Source: RevenueBase Database · checked Sep 17, 2026
2	Medgulf Construction Co. WLL	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	1,001-5,000	1,076 contacts →
	Indirect evidence “Medgulf Construction Company ( W.L.L.) is wholly owned Qatari Company established in September 1975.” Source: RevenueBase Database · checked Sep 17, 2026
3	Petroserv Limited WLL	Strong evidence	Doha, QatarHQ checked Sep 17, 2026	1,001-5,000	740 contacts →
	Strong evidence “PETROSERV Oil & Gas is an ISO 9001: 2015, ISO 14001: 2015 and OHSAS 45001: 2018 certified Company that offers a diverse range of engineering and construction services in the Oil…” Source: RevenueBase Database · checked Sep 17, 2026
4	Petrotec	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	501-1,000	496 contacts →
	Indirect evidence “Petroleum Technology Company W.L.L (Petrotec) is one of the largest providers of Engineered products and services to the energy industry in Qatar, specializing in key diverse…” Source: RevenueBase Database · checked Sep 17, 2026
5	Danem Group	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	1,001-5,000	494 contacts →
	Indirect evidence “Danem Group, established in 1998 and headquartered in Qatar, is a respected name in engineering, construction, project management and Trading.” Source: RevenueBase Database · checked Sep 17, 2026
6	Black CAT Engineering & Construction W.L.L	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	1,001-5,000	401 contacts →
	Indirect evidence “Black Cat Engineering & Construction WLL (BCEC) has been serving the industry in Qatar for three decades.” Source: RevenueBase Database · checked Sep 17, 2026
7	Venture Gulf Engineering	Strong evidence	Doha, QatarHQ checked Sep 17, 2026	1,001-5,000	332 contacts →
	Strong evidence “Venture Gulf Engineering W.L.L,(VGE) a subsidiary of Al Nasr Holding Company W.L.L, focused its resources and services with the aim of providing service to the Oil & Gas…” Source: RevenueBase Database · checked Sep 17, 2026
8	Chiyoda Almana Engineering LLC	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	201-500	292 contacts →
	Indirect evidence “Chiyoda Corporation of Japan has been active in supporting Qatar’s energy development since the 1970s, including the delivery of EPC projects for 12 of the 14 LNG trains that have…” Source: RevenueBase Database · checked Sep 17, 2026
9	SNC Lavalin Profac Gulf Management	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	51-200	146 contacts →
	Indirect evidence “Founded in 1911, SNC-Lavalin is one of the leading engineering and construction groups in the world and a major player in the ownership of infrastructure.” Source: RevenueBase Database · checked Sep 17, 2026
10	Energy Plus Technical Services W.L.L	Strong evidence	Doha, QatarHQ checked Sep 17, 2026	201-500	97 contacts →
	Strong evidence “ENERGYPLUS is a Leading Multi-Disciplinary and Oil & Gas Integrated Service Provider offers Multi Trade Professional, Innovative and Cost Effective Solutions in Construction…” Source: RevenueBase Database · checked Sep 17, 2026
11	Dime International Mechanical Engineering	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	201-500	63 contacts →
	Indirect evidence “DIME International Mechanical Engineering Co.” Source: RevenueBase Database · checked Sep 17, 2026
12	Qatar Construction Technique CO W.L.L. - Qctc	Indirect evidence	Ar Rayyān, QatarHQ checked Sep 17, 2026	501-1,000	61 contacts →
	Indirect evidence “Qatar Construction Technique Co WLL (QCTC) is one of the leading companies in the sector of specialized contracting services companies in the State of Qatar.” Source: RevenueBase Database · checked Sep 17, 2026
13	Jaidah Energy	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	51-200	61 contacts →
	Indirect evidence “Jaidahenergy LLC is a leading provider of services, products and solutions for the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
14	Peninsular Petrotech Engineering WLL	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	501-1,000	60 contacts →
	Indirect evidence “Peninsular Petrotech Engineering W.L.L (PPE), a member of Teyseer Group of Companies and headquartered in Doha, is a 100% Qatari Company operating since 1982 as a leading…” Source: RevenueBase Database · checked Sep 17, 2026
15	Techno Steel Trading & Contracting W.L.L	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	501-1,000	44 contacts →
	Indirect evidence “We are one of those firms with a highly successful track record of having completed big projects with maximum precision and timeliness.” Source: RevenueBase Database · checked Sep 17, 2026
16	Doha Project Trading & Services W.L.L	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	51-200	37 contacts →
	Indirect evidence “Doha Project Trading & Services W.L.L, established in April has now grown to be a well- established, highly reputed and most respected organization, inheriting credibility and…” Source: RevenueBase Database · checked Sep 17, 2026
17	IMC	Partial evidence	Zone 83, QatarHQ checked Sep 17, 2026	201-500	27 contacts →
	Partial evidence “IMC a special steel structure contractor in the world of engineering, fabrication, and construction in the GCC.” Source: RevenueBase Database · checked Sep 17, 2026
18	AL Waha TMC CO WLL	Strong evidence	Al Sadd 38, QatarHQ checked Sep 17, 2026	501-1,000	27 contacts →
	Strong evidence “Al Waha TMC now offers a full range of contracting services related to transportation, maintenance, and support services in the Oil and Gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
19	Petrosolutions Trading & Services	Strong evidence	Mesaieed Industrial City, QatarHQ checked Sep 17, 2026	11-50	23 contacts →
	Strong evidence “Petrosolutions is an ISO 9001:2015 Certified Organisation having specialization in supply of Electrical, Instrumentation, Mechanical, Drilling & Safety Equipments to Oil & Gas…” Source: RevenueBase Database · checked Sep 17, 2026
20	Mars Trading & Contracting CO	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	11-50	16 contacts →
	Indirect evidence “Established in 1958, Mars Trading & Contracting has been a pioneering force in the industry, with its Head Office proudly located in Doha.” Source: RevenueBase Database · checked Sep 17, 2026
21	Petrol & GAS Construction Company	Partial evidence	Industrial, QatarHQ checked Sep 17, 2026	201-500	16 contacts →
	Partial evidence “Established in 2002, Petrol & Gas Construction Co.” Source: RevenueBase Database · checked Sep 17, 2026
22	Haleys Group Middle East	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence “HALEYS Group Middle East established in 2013 to meet the increasing need for top-tier engineering support services in the Energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
23	Enertec Services	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	201-500	15 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	Ritz Serve	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “Ritz Serve is a specialized industrial Oilfield services company in the State of Qatar.” Source: RevenueBase Database · checked Sep 17, 2026
25	Renaissance Trading And Contracting	Indirect evidence	Doha, QatarHQ checked Sep 17, 2026	11-50	10 contacts →
	Indirect evidence “Commitment To Excellence” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: oil and gas processing plant contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names oil and gas processing plant contractors.
Partial evidence: Its own public description names part of oil and gas processing plant contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas processing plant contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 63 oil and gas processing plant contractors based in Qatar

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Oil and gas processing plant contractors based in Qatar at a glance

As of Sep 17, 2026

13.2%Verified-email coverage

130.3Average contacts per company

51-200Median size (employees)

55.6%Largest-city concentration · Doha

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Qatar, so it is reported there. Company counts and contact totals on this page are exact for Qatar, over 63 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among oil and gas processing plant contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Qatar whose own description of what they do matches “oil and gas processing plant contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names oil and gas processing plant contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among oil and gas processing plant contractors, and records with no verified work email. Companies headquartered outside Qatar are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,081 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Oil and gas processing plant contractors by metro

Oil and gas processing plant contractors in Doha35

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names oil and gas processing plant contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many oil and gas processing plant contractors are there based in Qatar?

RevenueBase identified 63 oil and gas processing plant contractors headquartered in Qatar as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Qatar Engineering & Construction Company W.L.L, headquartered in Qatar, tops this list with the largest team on record.

Which city has the most oil and gas processing plant contractors?

Doha leads with 35 headquartered companies, followed by Doha Qatar (4) and Al Rayyan (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,081 verified decision-maker contacts tracked across these 63 companies.

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 Smart Search, 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.