Company lists · Data refreshed September 2026

Top 25 Petroleum engineering consultants based in Türkiye

Name: Petroleum engineering consultants based in Türkiye
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 132 companies tracked

RevenueBase identified 132 petroleum engineering consultants headquartered in Türkiye as of September 2026 and tracks 2,868 professional contacts across them, including 434 with verified work emails. Ankara is the largest hub.

This list covers petroleum engineering consultants headquartered in Türkiye, 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

132Companies

2,868Contacts tracked

434Verified emails

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The 25 largest petroleum engineering consultants based in Türkiye

Ranked by team size

Top 25 of 132 petroleum engineering consultants based in Türkiye, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to petroleum engineering consultants: 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	Tp-Otc	Partial evidence	Çankaya, TürkiyeHQ checked Sep 17, 2026	501-1,000	1,501 contacts →
	Partial evidence “TP-OTC is established to provide all engineering and technology services for offshore operations in oil and gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
2	Bordrill Drilling Contractor And Trade Corp	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	201-500	215 contacts →
	Indirect evidence “BORDRILL Drilling Contractor & Trade Co.” Source: RevenueBase Database · checked Sep 17, 2026
3	Promer Consultancy Engineering INC	Strong evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	51-200	102 contacts →
	Strong evidence “PROMER Müşavirlik Mühendislik A.Ş.® is an independent engineering-consultancy company offering various professional solutions and services for industries such as mining, power…” Source: RevenueBase Database · checked Sep 17, 2026
4	Istrich	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	51-200	92 contacts →
	Indirect evidence “Enerji sektöründe ortaklarımızın özel sektörde yılların başından beri gerçekleştirdiği başarılı projeler ve edindiği tecrübelerden sonra, Istrich 2014 yılında müşterilerine enerji…” Source: RevenueBase Database · checked Sep 17, 2026
5	Stadia Engineering	Strong evidence	Çankaya, TürkiyeHQ checked Sep 17, 2026	51-200	77 contacts →
	Strong evidence “Stadia Engineering and Consultancy was established in 2018.” Source: RevenueBase Database · checked Sep 17, 2026
6	BE	Strong evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	51-200	64 contacts →
	Strong evidence “be is dedicated to providing sustainable engineering solutions and consultancy services in the fields of Renewables, Oil & Gas.” Source: RevenueBase Database · checked Sep 17, 2026
7	Koryon Engineering & Consultancy	Partial evidence	Bornova, TürkiyeHQ checked Sep 17, 2026	11-50	55 contacts →
	Partial evidence “At A Glance;* Oil & Gas Engineering Company,* Managed by Practicing Refinery Engineers,* Engineering Expertise that Minimizes Cost & Improves Process,* Over 100 Total Project…” Source: RevenueBase Database · checked Sep 17, 2026
8	Ozifin Mining LTD	Partial evidence	Çankaya, TürkiyeHQ checked Sep 17, 2026	11-50	30 contacts →
	Partial evidence “Ozifin is an independent, international engineering and consulting company based in Turkey, providing comprehensive solutions to the mining industry and related sectors since 2016.” Source: RevenueBase Database · checked Sep 17, 2026
9	AYA Drilling Services	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	1-10	25 contacts →
	Indirect evidence “Oilfield Services Company” Source: RevenueBase Database · checked Sep 17, 2026
10	Çalık Proje Mühendislik A.Ş	Indirect evidence	İstanbul, TürkiyeHQ checked Sep 17, 2026	51-200	22 contacts →
	Indirect evidence “Çalık Proje Mühendislik; Enerji, Petrol, Gaz ve Endüstri piyasalarında yer alan çeşitli firmalar – yükleniciler, işverenler ve finans kuruluşlarına 22 yıldır hizmet veren bir…” Source: RevenueBase Database · checked Sep 17, 2026
11	Lefa Temsilcilik	Indirect evidence	Besiktas, TürkiyeHQ checked Sep 17, 2026	11-50	19 contacts →
	Indirect evidence “20 yıldan bu yana petro kimya, enerji, tekstil, havacılık, kağıt ve ısı transfer gibi bir çok sektöre danışmanlık ve mühendislik hizmeti veren Lefa Temsilcilik, verdiği hizmetler…” Source: RevenueBase Database · checked Sep 17, 2026
12	Petrogas Industry	Indirect evidence	Gebze, TürkiyeHQ checked Sep 17, 2026	51-200	18 contacts →
	Indirect evidence “Petrogas Industry (PGI), a subsidiary of Petrogas E&P, specializes in equipment manufacturing, turnkey industrial solutions and EPC services for energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
13	Zetaş Yapi	Partial evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	51-200	17 contacts →
	Partial evidence “ZETAS YAPI is an engineering company that gives technical support to construction, industry, oil & gas projects with offices in Ankara, Baku, Tbilisi and Warsaw.” Source: RevenueBase Database · checked Sep 17, 2026
14	Fides Mühendislik	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Bünyesinde jeoloji, maden ve çevre mühendisliğinin yanı sıra çeşitli disiplinlerden oluşan tecrübeli uzman kadrosu ile her geçen gün büyümeye devam eden FİDES MÜHENDİSLİK…” Source: RevenueBase Database · checked Sep 17, 2026
15	Toros Filtrasyon Teknolojileri A.S	Partial evidence	Istanbul, TürkiyeHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Toros is a leading engineering company in Türkiye, specializing in oil management.” Source: RevenueBase Database · checked Sep 17, 2026
16	Pesscon Makina Mühendislik Metal İnşaat Sanayi VE Ticaret A.Ş	Indirect evidence	Bayrakli, TürkiyeHQ checked Sep 17, 2026	51-200	12 contacts →
	Indirect evidence “yılından bu yana Petrol, Gaz, Enerji ve Madencilik sektörlerinde; Çelik Ekipman, tank İmalat, Montaj, Proje Yönetimi ve Kalite Kontrol konularında, yurtiçinde ve yurtdışında…” Source: RevenueBase Database · checked Sep 17, 2026
17	INR Consulting & Engineering INC	Partial evidence	Cankaya, TürkiyeHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “INR provides worldwide consulting and engineering services especially in mining projects mainly associated with geological, geotechnical, and hydraulic engineering disciplines.” Source: RevenueBase Database · checked Sep 17, 2026
18	Enigma Energy Solutions	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	51-200	10 contacts →
	Indirect evidence “We supply clients with geophysical services to help them achieve greater success in finding, developing, managing hydrocarbon reservoirs and mineral deposits.” Source: RevenueBase Database · checked Sep 17, 2026
19	Emtesa	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “Emtesa operates as a technical supply company with the experienced engineer crew, serving companies that are in need of technical components.” Source: RevenueBase Database · checked Sep 17, 2026
20	Procubex	Indirect evidence	Istanbul, TürkiyeHQ checked Sep 17, 2026	1-10	5 contacts →
	Indirect evidence “A different service experience and tailor-made solutions for businesses in upstream & downstream of oil, gas and geothermal industry.” Source: RevenueBase Database · checked Sep 17, 2026
21	Zirkon Consulting Engineering	Indirect evidence	Ankara, TürkiyeHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “Mente et Malleo” Source: RevenueBase Database · checked Sep 17, 2026
22	Neos Enerji	Indirect evidence	Golbasi, TürkiyeHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “NEOS Group Inc.” Source: RevenueBase Database · checked Sep 17, 2026
23	Teori Earth Sciences	Strong evidence	Etimesgut, TürkiyeHQ checked Sep 17, 2026	1-10	4 contacts →
	Strong evidence “Teori Earth Sciences is an engineering and consultancy firm that aims to offer geological, hydrogeological, and environmental solutions at national and international standards…” Source: RevenueBase Database · checked Sep 17, 2026
24	Enigma Engineering Solutions	Strong evidence	Aydın, TürkiyeHQ checked Sep 17, 2026	1-10	3 contacts →
	Strong evidence “Enigma Engineering Solutions is an independent consultancy company which was found in 2023 in Turkey for the oil, gas & geothermal exploration & production industry.” Source: RevenueBase Database · checked Sep 17, 2026
25	HEB Proje Müşavirlik	Indirect evidence	İskenderun, TürkiyeHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “Geçmişte edindiğimiz tecrübe ve birikimlerimiz ışığında, HEB Proje Müşavirlik olarak mühendisliğe ve iş ortağımıza değer katıyoruz.” 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: petroleum engineering consultants. 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 petroleum engineering consultants.
Partial evidence: Its own public description names part of petroleum engineering consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name petroleum engineering consultants. 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 132 petroleum engineering consultants based in Türkiye

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Petroleum engineering consultants based in Türkiye at a glance

As of Sep 17, 2026

15.1%Verified-email coverage

21.7Average contacts per company

11-50Median size (employees)

23.5%Largest-city concentration · Ankara

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 132 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 petroleum engineering consultants, 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 Türkiye whose own description of what they do matches “petroleum engineering consultants”. 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 petroleum engineering consultants), 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 petroleum engineering consultants, and records with no verified work email. Companies headquartered outside Türkiye 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, 434 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.

Petroleum engineering consultants by metro

Petroleum engineering consultants in Ankara31

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 petroleum engineering consultants, 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 petroleum engineering consultants are there based in Türkiye?

RevenueBase identified 132 petroleum engineering consultants headquartered in Türkiye 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?

Tp-Otc, headquartered in Cankaya, tops this list with the largest team on record.

Which city has the most petroleum engineering consultants?

Ankara leads with 31 headquartered companies, followed by Istanbul (20) and Cankaya (19).

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 434 verified decision-maker contacts tracked across these 132 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.