Company lists · Data refreshed September 2026

Top 25 Hydrocarbon processing plant builders based in Nigeria

Name: Hydrocarbon processing plant builders based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 274 companies tracked

RevenueBase identified 274 hydrocarbon processing plant builders headquartered in Nigeria as of September 2026 and tracks 5,206 professional contacts across them, including 731 with verified work emails. Port Harcourt is the largest hub.

This list covers hydrocarbon processing plant builders headquartered in Nigeria, 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 20, 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 20, 2026 86% judged on-target in blind review

274Companies

5,206Contacts tracked

731Verified emails

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The 25 largest hydrocarbon processing plant builders based in Nigeria

Ranked by team size

Top 25 of 274 hydrocarbon processing plant builders based in Nigeria, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to hydrocarbon processing plant builders: 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	Nestoil Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 20, 2026	1,001-5,000	700 contacts →
	Indirect evidence “Nestoil is Nigeria’s largest indigenous Engineering, Procurement, Construction and Commissioning (EPCC) Company in the Oil and Gas sector and has been a significant contributor to…” Source: RevenueBase Database · checked Sep 20, 2026
2	Dover Engineering Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	501-1,000	315 contacts →
	Indirect evidence “Dover Engineering Limited is a reputable Engineering Design,EPC, Operations & Maintenance Company.” Source: RevenueBase Database · checked Sep 20, 2026
3	Pivot-Gis Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	201-500	264 contacts →
	Indirect evidence “PIVOT-GIS is a leading Nigerian Engineering, Procurement, Construction, Operations & Maintenance (EPCOM) company serving the oil, gas, and energy sectors since 2004.” Source: RevenueBase Database · checked Sep 20, 2026
4	Ariosh	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	201-500	243 contacts →
	Indirect evidence “Ariosh delivers engineering and construction services in the onshore, offshore and subsea segment of the oil and gas sector in Nigeria, West Africa.” Source: RevenueBase Database · checked Sep 20, 2026
5	Makon Group	Indirect evidence	Lekki, NigeriaHQ checked Sep 20, 2026	501-1,000	192 contacts →
	Indirect evidence “Makon Group is an international organisation with its business interests spanning Engineering, Procurement, Construction, Operation and Maintenance (EPICOM) for Oil and Gas…” Source: RevenueBase Database · checked Sep 20, 2026
6	Ponticelli Nigeria	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	501-1,000	151 contacts →
	Indirect evidence “PONTICELLI NIGERIA [PNL] is a subsidiary of PONTICELLI Frères Group, a leading European services supplier to companies in the energy, industrial, and infrastructural sectors.” Source: RevenueBase Database · checked Sep 20, 2026
7	Kohasa Engineering Company Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	11-50	139 contacts →
	Indirect evidence “Kohasa Engineering Company Limited is an oil and energy company based out of Plot 474, Trans Amadi industrial layout, Port Harcourt, RIVERS, Nigeria.” Source: RevenueBase Database · checked Sep 20, 2026
8	LEE Engineering And Construction Company LTD	Indirect evidence	Ikoyi, NigeriaHQ checked Sep 20, 2026	501-1,000	114 contacts →
	Indirect evidence “Lee Engineering and Construction Co.” Source: RevenueBase Database · checked Sep 20, 2026
9	DBN Energies	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	201-500	104 contacts →
	Indirect evidence “DBN’s core competencies include a vast range of engineering and construction capabilities that cater to the diverse needs of its projects and clients in Nigeria and globally.” Source: RevenueBase Database · checked Sep 20, 2026
10	Hydroserve Group	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	51-200	86 contacts →
	Indirect evidence “Hydroserve Group is a leading oil and gas company which started as Hydroserve Oil Services Nigeria Limited in November, We began operations in with Pipeline & Process, and Pumping…” Source: RevenueBase Database · checked Sep 20, 2026
11	Rosetti Pivot LTD	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	51-200	84 contacts →
	Indirect evidence “Rosetti Pivot Limited provides an array of engineering, procurement, and construction services to the oil & gas sectors within Nigeria and the Sub-Saharan Africa region, using…” Source: RevenueBase Database · checked Sep 20, 2026
12	Elper Oilfield Engineering	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	501-1,000	70 contacts →
	Indirect evidence “ELPER has built in time, a strong international network, and a specialized engineering company, providing services ranging from Engineering Procurement & Construction to Marine…” Source: RevenueBase Database · checked Sep 20, 2026
13	Crestech Engineering Limited, Lagos - Nigeria	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	51-200	67 contacts →
	Indirect evidence “Crestech is an Engineering Design and Project Management Company with its head office in Victoria Island, Lagos, Nigeria.” Source: RevenueBase Database · checked Sep 20, 2026
14	Frazimex Engineering Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	201-500	58 contacts →
	Indirect evidence “FRAZIMEX ENGINEERING LIMITED, a member of Oilserv group was incorporated in 2005 under the laws of the Federal republic of Nigeria as a private limited liability company that…” Source: RevenueBase Database · checked Sep 20, 2026
15	Weltek Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	51-200	55 contacts →
	Indirect evidence “WELTEK Limited is an engineering, procurement and construction company, incorporated in Nigeria in 1986, to provide specialized services to the Oil & Gas, Power Generation…” Source: RevenueBase Database · checked Sep 20, 2026
16	Bridgsite Nigeria Limited BNL	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	201-500	55 contacts →
	Indirect evidence “BRIDGSITE NIGERIA LIMITED (BNL) is an indigenous Engineering and Construction Services Company engaged in the provision of solution oriented, cost effective and responsive high…” Source: RevenueBase Database · checked Sep 20, 2026
17	Nigerstar7 Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	51-200	48 contacts →
	Indirect evidence “With headquarters in Lagos, Nigeria, NigerStar7 is a company wholly owned by Subsea7.” Source: RevenueBase Database · checked Sep 20, 2026
18	Melcurt Limited	Indirect evidence	Osubi-warri, NigeriaHQ checked Sep 20, 2026	201-500	45 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
19	Alphaden Energy & Oilfield Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 20, 2026	51-200	35 contacts →
	Indirect evidence “The ‘ALPHA’S DEN’ is a hub of professional and well experienced Alpha’s, championing their fields while collectively making up a provider of fit-for-purpose services to clients…” Source: RevenueBase Database · checked Sep 20, 2026
20	Geoscape Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	11-50	29 contacts →
	Indirect evidence “Geoscape Limited is a certified Oil and gas engineering services company in Nigeria with many years of experience and knowledge of international standards, technological and…” Source: RevenueBase Database · checked Sep 20, 2026
21	Waal Energy Services Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	51-200	29 contacts →
	Indirect evidence “Registered in 2020 and commenced business operations in October 2022, Waal Energy Services Limited is a full-spectrum technical solutions company focused on delivering end-to-end…” Source: RevenueBase Database · checked Sep 20, 2026
22	Gmunu Limited	Indirect evidence	Lekki Phase 1, NigeriaHQ checked Sep 20, 2026	51-200	27 contacts →
	Indirect evidence “GMUNU is a full-service Engineering Procurement and Construction Company.” Source: RevenueBase Database · checked Sep 20, 2026
23	Kurus Nigeria Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	51-200	27 contacts →
	Indirect evidence “KURUS NIGERIA LIMITED, fully indigenous but world class, is committed to delivering qualitative, efficient and cost effective Technical solution to the Oil/Gas and energy…” Source: RevenueBase Database · checked Sep 20, 2026
24	Supasteel Limited	Indirect evidence	Kaduna, NigeriaHQ checked Sep 20, 2026	201-500	25 contacts →
	Indirect evidence “Supasteel Limited is a wholly indigenously owned Engineering Procurement and construction Company carrying out Fabrication, Installation, Repair of Static and Rotating Equipment…” Source: RevenueBase Database · checked Sep 20, 2026
25	Bicens Resources Limited	Indirect evidence	Warri, NigeriaHQ checked Sep 20, 2026	501-1,000	22 contacts →
	Indirect evidence “Bicens Resources Limited is a tech savvy multidisciplinary firm with competencies in the Oil & Gas Industry, Providing and delivering exceptional solutions in DRILLING,OPERATIONS…” Source: RevenueBase Database · checked Sep 20, 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: hydrocarbon processing plant builders. 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 hydrocarbon processing plant builders.
Partial evidence: Its own public description names part of hydrocarbon processing plant builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydrocarbon processing plant builders. 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 274 hydrocarbon processing plant builders based in Nigeria

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Hydrocarbon processing plant builders based in Nigeria at a glance

As of Sep 20, 2026

14.0%Verified-email coverage

19.0Average contacts per company

11-50Median size (employees)

27.0%Largest-city concentration · Port Harcourt

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

115

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Nigeria, so it is reported there. Company counts and contact totals on this page are exact for Nigeria, over 274 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 hydrocarbon processing plant builders, 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 Nigeria whose own description of what they do matches “hydrocarbon processing plant builders”. 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 hydrocarbon processing plant builders), 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 hydrocarbon processing plant builders, and records with no verified work email. Companies headquartered outside Nigeria 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, 731 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 20, 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.

Hydrocarbon processing plant builders by metro

Hydrocarbon processing plant builders in Port Harcourt74
Hydrocarbon processing plant builders in Lagos57

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 hydrocarbon processing plant builders, 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 hydrocarbon processing plant builders are there based in Nigeria?

RevenueBase identified 274 hydrocarbon processing plant builders headquartered in Nigeria 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?

Nestoil Limited, headquartered in Victoria Island Lagos, tops this list with the largest team on record.

Which city has the most hydrocarbon processing plant builders?

Port Harcourt leads with 74 headquartered companies, followed by Lagos (57) and Lagos State (21).

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 731 verified decision-maker contacts tracked across these 274 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 20, 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.