Company lists · Data refreshed September 2026

Top 25 Refinery construction companies based in Nigeria

Name: Refinery construction companies based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 351 companies tracked

RevenueBase identified 351 company matches for refinery construction companies associated with Nigeria as of September 2026 and tracks 6,316 professional contacts across them, including 825 with verified work emails. Port Harcourt is the largest hub.

This list covers company matches for refinery construction companies associated with Nigeria, 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

351Companies

6,316Contacts tracked

825Verified emails

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The 25 largest refinery construction companies based in Nigeria

Ranked by team size

Top 25 of 351 company matches for refinery construction companies based in Nigeria, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Nestoil Limited	Exact match	Victoria Island, NigeriaHQ recorded Sep 17, 2026	1,001-5,000	700 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Alcon Nigeria LTD	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	1,001-5,000	417 contacts →
	Exact match “ALCON Nigeria Limited commenced operation on the 10th day of May 1982 as MED Construction, incorporated with registration no: RC 47042.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Cakasa Nigeria Company Limited	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	201-500	340 contacts →
	Exact match “CAKASA was incorporated in 1974 to provide Engineering, Procurement & Construction (EPC) Services to the Nigerian Oil and Gas and Industrial Infrastructural clients: A trailblazer…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Dover Engineering Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	501-1,000	315 contacts →
	Exact match “Dover Engineering Limited is a reputable Engineering Design,EPC, Operations & Maintenance Company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Pivot-Gis Limited	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	201-500	264 contacts →
	Exact match “PIVOT-GIS is a leading Nigerian Engineering, Procurement, Construction, Operations & Maintenance (EPCOM) company serving the oil, gas, and energy sectors since 2004.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Ariosh	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	201-500	243 contacts →
	Exact match “Ariosh delivers engineering and construction services in the onshore, offshore and subsea segment of the oil and gas sector in Nigeria, West Africa.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Seflam SGL	Exact match	Victoria Island, NigeriaHQ recorded Sep 17, 2026	201-500	220 contacts →
	Exact match “A foremost provider of Engineering, Procurement, Construction, & Installation Services to the Nigerian Oil and Gas Industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Kohasa Engineering Company Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	11-50	139 contacts →
	Exact match “Kohasa Engineering Company Limited is an oil and energy company based out of Plot 474, Trans Amadi industrial layout, Port Harcourt, RIVERS, Nigeria.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Morpol Engineering Services	Exact match	Victoria Island, NigeriaHQ recorded Sep 17, 2026	501-1,000	127 contacts →
	Exact match “Morpol Engineering Services Ltd.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	LEE Engineering And Construction Company LTD	Exact match	Ikoyi, NigeriaHQ recorded Sep 17, 2026	501-1,000	114 contacts →
	Exact match “Lee Engineering and Construction Co.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	DBN Energies	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	201-500	104 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Nivafer Engineering And Construction Limited	Exact match	Oke-shasha, NigeriaHQ recorded Sep 17, 2026	201-500	94 contacts →
	Exact match “NIVAFER Engineering & Construction Limited is a steel fabrication and erection outfit offering unparalleled engineering & construction services to the Oil and Gas industry…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Rosetti Pivot LTD	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	51-200	84 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Elper Oilfield Engineering	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	501-1,000	70 contacts →
	Exact match “ELPER has built in time, a strong international network, and a specialized engineering company, providing services ranging from Engineering Procurement & Construction to Marine…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Crestech Engineering Limited, Lagos - Nigeria	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	51-200	67 contacts →
	Exact match “Crestech is an Engineering Design and Project Management Company with its head office in Victoria Island, Lagos, Nigeria.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Frazimex Engineering Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	201-500	58 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Weltek Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	51-200	55 contacts →
	Exact match “WELTEK Limited is an engineering, procurement and construction company, incorporated in Nigeria in 1986, to provide specialized services to the Oil & Gas, Power Generation…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Bridgsite Nigeria Limited BNL	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	201-500	55 contacts →
	Exact match “BRIDGSITE NIGERIA LIMITED (BNL) is an indigenous Engineering and Construction Services Company engaged in the provision of solution oriented, cost effective and responsive high…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Northridge Engineering Limited	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	501-1,000	55 contacts →
	Exact match “Established in 2009, Northridge Engineering Limited is a construction company serving the private and public sector as well as the oil & gas industry in Nigeria (i.e, NOCs and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Homeland Integrated Offshore Services Limited	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	51-200	55 contacts →
	Exact match “Homeland Integrated Offshore Services Limited is a multi disciplinary organization for Engineering, Procurement, Construction and Installation services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Deltatek Offshore Limited	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	201-500	48 contacts →
	Exact match “DeltaTek Offshore Ltd is a leading Engineering, Procurement, Installation, Construction, and Commissioning (EPICC) service provider in the oil and gas sector of Sub-Sahara Africa.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Melcurt Limited	Exact match	Osubi-warri, NigeriaHQ recorded Sep 17, 2026	201-500	45 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Alphaden Energy & Oilfield Limited	Exact match	Victoria Island, NigeriaHQ recorded Sep 17, 2026	51-200	35 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Tomsey Engineering & Services International LTD	Exact match	Ikeja, NigeriaHQ recorded Sep 17, 2026	11-50	33 contacts →
	Exact match “TOMSEY Engineering & Services International Ltd is a trusted provider of Engineering, Procurement, and Construction (EPC) services to Nigeria’s Oil & Gas, Power, Petrochemical…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Gmunu Limited	Exact match	Lekki Phase 1, NigeriaHQ recorded Sep 17, 2026	51-200	27 contacts →
	Exact match “GMUNU is a full-service Engineering Procurement and Construction Company.” Recorded in the RevenueBase company graph · Sep 17, 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 “refinery construction companies”. 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 351 refinery construction companies based in Nigeria

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Refinery construction companies based in Nigeria at a glance

As of Sep 17, 2026

13.1%Verified-email coverage

18.0Average contacts per company

11-50Median size (employees)

21.9%Largest-city concentration · Port Harcourt

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

147

51-200

201-500

501-1,000

1,001-5,000

10001+

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 351 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 Nigeria whose business descriptions match “refinery construction 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 825 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.

Refinery construction companies by metro

Refinery construction companies in Port Harcourt77

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 “refinery construction companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery construction companies are there based in Nigeria?

RevenueBase identified 351 company matches for refinery construction companies associated with Nigeria 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?

Nestoil Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most refinery construction companies?

Port Harcourt leads with 77 company records, followed by Lagos (67) and Lagos State (30).

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 825 professional contacts with verified work emails tracked across these 351 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.