Company lists · Data refreshed September 2026

Top 25 Refinery expansion contractors based in Nigeria

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 518 companies tracked

RevenueBase identified 518 company matches for refinery expansion contractors associated with Nigeria as of September 2026 and tracks 7,680 professional contacts across them, including 964 with verified work emails. Port Harcourt is the largest hub.

This list covers company matches for refinery expansion contractors 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

518Companies

7,680Contacts tracked

964Verified emails

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The 25 largest refinery expansion contractors based in Nigeria

Ranked by team size

Top 25 of 518 company matches for refinery expansion contractors 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	Aveon Offshore Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	501-1,000	394 contacts →
	Exact match “Aveon Offshore Limited is an engineering and fabrication services company that has been providing construction and general fabrication services for the oil and gas industry since…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Vita Construction LTD	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	1,001-5,000	318 contacts →
	Exact match “Vita Construction is one of the largest construction companies in Nigeria with over 41 years of experience in providing professional services, in engineering and construction, as…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	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
4	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
5	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
6	Makon Group	Exact match	Lekki, NigeriaHQ recorded Sep 17, 2026	501-1,000	192 contacts →
	Exact match “Makon Group is an international organisation with its business interests spanning Engineering, Procurement, Construction, Operation and Maintenance (EPICOM) for Oil and Gas…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Westfield Energy Resources Limited	Exact match	Lekki, NigeriaHQ recorded Sep 17, 2026	51-200	164 contacts →
	Exact match “We are a leading integrated energy services and solutions provider operating across the entire upstream Oil & Gas, Power and Infrastructure value chain in West Africa.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Ponticelli Nigeria	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	501-1,000	151 contacts →
	Exact match “PONTICELLI NIGERIA [PNL] is a subsidiary of PONTICELLI Frères Group, a leading European services supplier to companies in the energy, industrial, and infrastructural sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	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
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	Arion Energy Services Limited	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	51-200	114 contacts →
	Exact match “Arion Energy Services is an engineering, projects, and operations service provider to the oil and gas, power and maritime industries.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	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
13	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
14	Hydroserve Group	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	51-200	86 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	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
16	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
17	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
18	Thompson & Grace Investments Limited	Exact match	Port-harcourt, NigeriaHQ recorded Sep 17, 2026	201-500	67 contacts →
	Exact match “Thompson & Grace Investment Limited (TGIL) an Engineering/ Oilfield Service company in Nigeria provides services to the Engineering Sector/Oil and Gas industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Vagan OIL And GAS Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	201-500	66 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Merald Group	Exact match	Victoria Island, NigeriaHQ recorded Sep 17, 2026	201-500	62 contacts →
	Exact match “Merald Group is an Engineering and Construction Company specialised in Mechanical Works, Electrical Installations, HVAC Installations, Industrial Piping and Pipeline, Structural…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	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
22	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
23	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
24	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
25	Cakasa Maintenance Services Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	51-200	52 contacts →
	Exact match “Cakasa Maintenance Services Limited is a global oil servicing company in Nigeria, with Head Office in PortHarcourt.” 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 expansion contractors”. 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 518 refinery expansion contractors based in Nigeria

See the full list, filter by size, metro and specialty, and access 964 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery expansion contractors based in Nigeria at a glance

As of Sep 17, 2026

12.6%Verified-email coverage

14.8Average contacts per company

11-50Median size (employees)

25.1%Largest-city concentration · Port Harcourt

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

228

51-200

107

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 518 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 expansion contractors” 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 964 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 expansion contractors 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 “refinery expansion contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery expansion contractors are there based in Nigeria?

RevenueBase identified 518 company matches for refinery expansion contractors 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?

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

Which city has the most refinery expansion contractors?

Port Harcourt leads with 130 company records, followed by Lagos (99) and Lagos State (33).

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 964 professional contacts with verified work emails tracked across these 518 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.