Company lists · Data refreshed October 2026

Top 25 Oil, gas & petroleum engineering services based in Türkiye

Name: Oil, gas & petroleum engineering services based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 28, 2026 792 companies tracked

RevenueBase identified 792 company matches for oil, gas & petroleum engineering services associated with Türkiye as of October 2026 and tracks 14,400 professional contacts across them, including 1,820 with verified work emails. Istanbul is the largest hub.

This list covers company matches for oil, gas & petroleum engineering services associated with Türkiye, 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 October 28, 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 Oct 28, 2026 How this list was built

792Companies

14,400Contacts tracked

1,820Verified emails

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The 25 largest oil, gas & petroleum engineering services based in Türkiye

Ranked by team size

Top 25 of 792 company matches for oil, gas & petroleum engineering services based in Türkiye, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 28, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Tp-Otc	Exact match	Çankaya, TürkiyeHQ recorded Oct 28, 2026	501-1,000	1,766 contacts →
	Exact match “TP-OTC is established to provide all engineering and technology services for offshore operations in oil and gas industry.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
2	Ronesans Endustri Tesisleri	Exact match	Istanbul, TürkiyeHQ recorded Oct 28, 2026	10001+	1,456 contacts →
	Exact match “Rönesans Endüstri Tesisleri specializes in construction services and EPC in Hydrocarbons, Power, Metallurgy & Mining and Process Plants sectors.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
3	AE Arma-Elektropanç	Exact match	Istanbul, TürkiyeHQ recorded Oct 28, 2026	10001+	451 contacts →
	Exact match “One of the strongest and leading companies of the Turkish engineering and contracting sector, ARMA ENGINEERING founded in 1986 and ELEKTROPANÇ ELECTRICAL INDUSTRY founded in 1991…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
4	Teknokon Grup	Exact match	Istanbul, TürkiyeHQ recorded Oct 28, 2026	1,001-5,000	346 contacts →
	Exact match “Headquartered in Istanbul / Turkey, Teknokon Group is a multi-disciplinary organization serving its clientele with a full range of engineering, procurement and construction for…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
5	Blue Projects	Exact match	Istanbul, TürkiyeHQ recorded Oct 28, 2026	201-500	344 contacts →
	Exact match “Blue Projects is an international engineering and project management company delivering capital-efficient projects across industrial, commercial, and residential sectors.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
6	SIGMA	Exact match	Besiktas, TürkiyeHQ recorded Oct 28, 2026	201-500	341 contacts →
	Exact match “Sigma olarak inşaat sektöründeki 30 yılı aşkın tecrübemiz ve çözüm odaklı yaklaşımımızla Türkiye'nin en güvenilir mühendislik ve danışmanlık firmaları arasında yer alıyoruz.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
7	Ekon Industry Construction & Trade INC	Exact match	Ankara, TürkiyeHQ recorded Oct 28, 2026	5,001-10,000	317 contacts →
	Exact match “EKON is a leading engineering & construction company for establishing infrastructure and integrated industrial projects from the planning and design stages, through engineering…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
8	Tekfen Engineering	Exact match	Sisli, TürkiyeHQ recorded Oct 28, 2026	201-500	302 contacts →
	Exact match “Tekfen Engineering was founded in 1984 to provide engineering services for our parent company, Tekfen Construction.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
9	Deha Tech Makina SAN VE TIC A.S	Exact match	Istanbul, TürkiyeHQ recorded Oct 28, 2026	1,001-5,000	244 contacts →
	Exact match “Welcome to DEHA TECH Engineering & Contracting Group We provide engineering and contracting services all around the world with our experienced team.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
10	Enka İnşaat VE Sanayi A.Ş. Engineering For A Better Future	Exact match	Besiktas, TürkiyeHQ recorded Oct 28, 2026	10001+	228 contacts →
	Exact match “ENKA is a global engineering and construction firm headquartered in Istanbul, Turkey.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
11	Prota Engineering	Exact match	Ankara, TürkiyeHQ recorded Oct 28, 2026	201-500	194 contacts →
	Exact match “Founded in 1985, Prota Engineering is a pioneering design firm with a global footprint, having executed over projects spanning across 25 countries, having offices in Turkey…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
12	Eltemtek A.Ş	Exact match	Ankara, TürkiyeHQ recorded Oct 28, 2026	501-1,000	193 contacts →
	Exact match “ELTEMTEK A.Ş olarak temel mühendislik hizmetlerinden, yatırım danışmanlığına; işletme hizmetlerine, sistem analiz etütlerine, harita ve kamulaştırma hizmetlerine uzanan geniş bir…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
13	Dolsar Engineering Inc. CO	Exact match	Ankara, TürkiyeHQ recorded Oct 28, 2026	201-500	183 contacts →
	Exact match “Founded in 1971, DOLSAR is a multi-disciplinary engineering firm offering engineering, architectural, consultancy and supervision services for large-scale projects in a wide range…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
14	Vito Energy, Engineering & Construction	Exact match	İstanbul, TürkiyeHQ recorded Oct 28, 2026	501-1,000	170 contacts →
	Exact match “ViTO Energy Engineering and Construction is an integrated EPC services provider for industrial projects.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
15	Exacons	Exact match	Istanbul, TürkiyeHQ recorded Oct 28, 2026	201-500	140 contacts →
	Exact match “EXACONS Project and Contracting Inc; was founded in 2014, Istanbul based on the vision to become a Solution Partner in every phase of the industrial facility life cycle for local…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
16	Mega Engineering Consulting	Exact match	Umitkoy, TürkiyeHQ recorded Oct 28, 2026	201-500	114 contacts →
	Exact match “MEGA Engineering Consulting Inc, established in 1993, is a multidisciplinary firm that provides engineering, design, construction supervision and project management services for a…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
17	Tefirom İnşaat Enerji Sanayi VE Ticaret A.Ş	Exact match	Ankara, TürkiyeHQ recorded Oct 28, 2026	1,001-5,000	110 contacts →
	Exact match “Tefirom is a global construction and energy company headquartered in Ankara, Türkiye, specializing in large-scale projects across construction, engineering and energy sectors.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
18	Promer Consultancy Engineering INC	Exact match	Ankara, TürkiyeHQ recorded Oct 28, 2026	51-200	108 contacts →
	Exact match “PROMER Müşavirlik Mühendislik A.Ş.® is an independent engineering-consultancy company offering various professional solutions and services for industries such as mining, power…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
19	Istrich	Exact match	Ankara, TürkiyeHQ recorded Oct 28, 2026	51-200	106 contacts →
	Exact match “Enerji sektöründe ortaklarımızın özel sektörde yılların başından beri gerçekleştirdiği başarılı projeler ve edindiği tecrübelerden sonra, Istrich 2014 yılında müşterilerine enerji…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
20	Apco Teknik	Exact match	Ankara And Istanbul, TürkiyeHQ recorded Oct 28, 2026	51-200	86 contacts →
	Exact match “Apco is a full-service engineering, consultancy and project management firm, established in 1987.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
21	Stadia Engineering	Exact match	Çankaya, TürkiyeHQ recorded Oct 28, 2026	51-200	84 contacts →
	Exact match “Stadia Engineering and Consultancy was established in 2018.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
22	Ap-Cb	Exact match	Ankara, TürkiyeHQ recorded Oct 28, 2026	51-200	77 contacts →
	Exact match “BİZ KİMİZ?” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
23	Partner Teknik	Exact match	Istanbul, TürkiyeHQ recorded Oct 28, 2026	201-500	72 contacts →
	Exact match “PARTNER TEKNİK was established with the mission of realizing industrial projects in Türkiye, Middle East, Africa and CIS countries.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
24	Artemis Arıtım	Exact match	İstanbul, TürkiyeHQ recorded Oct 28, 2026	51-200	62 contacts →
	Exact match “1998 yılından günümüze çevre koruma konusunda faaliyet gösteren Artemis Arıtım uluslararası bilgi ve tecrübeye sahip mühendisleri ve akademik danışmanlarıyla birçok başarılı…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
25	Koryon Engineering & Consultancy	Exact match	Bornova, TürkiyeHQ recorded Oct 28, 2026	11-50	61 contacts →
	Exact match “At A Glance;* Oil & Gas Engineering Company,* Managed by Practicing Refinery Engineers,* Engineering Expertise that Minimizes Cost & Improves Process,* Over 100 Total Project…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “oil, gas & petroleum engineering services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 792 oil, gas & petroleum engineering services based in Türkiye

See the full list, filter by size, metro and specialty, and access 1,820 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil, gas & petroleum engineering services based in Türkiye at a glance

As of Oct 28, 2026

12.6%Verified-email coverage

18.2Average contacts per company

11-50Median size (employees)

19.1%Largest-city concentration · Istanbul

Oct 28, 2026Page data refreshed

Companies by employee count

1-10

339

11-50

278

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Türkiye, so it is reported there. Company counts and contact totals on this page are exact for Türkiye, over 792 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 Türkiye whose business descriptions match “oil, gas & petroleum engineering services” 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 1,820 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 October 28, 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.

Oil, gas & petroleum engineering services by metro

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, gas & petroleum engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil, gas & petroleum engineering services are there based in Türkiye?

RevenueBase identified 792 company matches for oil, gas & petroleum engineering services associated with Türkiye as of October 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?

Tp-Otc tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most oil, gas & petroleum engineering services?

Istanbul leads with 151 company records, followed by Ankara (101) and Cankaya (54).

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 1,820 professional contacts with verified work emails tracked across these 792 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 October 28, 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.