Company lists · Data refreshed October 2026

Top 25 Refinery services and maintenance companies based in Nigeria

RevenueBase identified 315 company matches for refinery services and maintenance companies associated with Nigeria as of October 2026 and tracks 5,478 professional contacts across them, including 498 with verified work emails. Port Harcourt is the largest hub.

This list covers company matches for refinery services and maintenance 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 October 22, 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 22, 2026 How this list was built
315Companies
5,478Contacts tracked
498Verified emails
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The 25 largest refinery services and maintenance companies based in Nigeria

Ranked by team size
Top 25 of 315 company matches for refinery services and maintenance companies based in Nigeria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 2026501-1,000406 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 · Oct 22, 2026 · View company records in RevenueBase
2Exact matchLagos, NigeriaHQ recorded Oct 22, 2026201-500251 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 · Oct 22, 2026 · View company records in RevenueBase
3Exact matchLagos, NigeriaHQ recorded Oct 22, 202651-200244 contacts →

Exact match

“Prime Atlantic Cegelec (PACE) Limited is an indigenous Nigerian company dedicated to effecting development and building capacity in the Nigerian oil and gas industry.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
4Exact matchLekki, NigeriaHQ recorded Oct 22, 2026501-1,000194 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 · Oct 22, 2026 · View company records in RevenueBase
5Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 2026501-1,000165 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 · Oct 22, 2026 · View company records in RevenueBase
6Exact matchLagos, NigeriaHQ recorded Oct 22, 202651-200127 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 · Oct 22, 2026 · View company records in RevenueBase
7Exact matchIkoyi, NigeriaHQ recorded Oct 22, 2026501-1,000117 contacts →

Exact match

“Lee Engineering and Construction Co.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8Exact matchLekki, NigeriaHQ recorded Oct 22, 202651-200112 contacts →

Exact match

“The Company Emval Nigeria Limited is a servicing company that provides onshore and offshore technical services to the Oil & Gas industry.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
9Exact matchLekki, NigeriaHQ recorded Oct 22, 2026501-1,00094 contacts →

Exact match

“PFL Engineering Services Limited (PFL) is an indigenous company established in 2002.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 202651-20093 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 · Oct 22, 2026 · View company records in RevenueBase
11Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 202651-20079 contacts →

Exact match

“Global Process and Pipeline Services Limited (GPPS) offer quality services and a number of innovative new technologies, that will span over the under listed Services: Pipeline…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
12Exact matchPort-harcourt, NigeriaHQ recorded Oct 22, 2026201-50073 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 · Oct 22, 2026 · View company records in RevenueBase
13Exact matchLagos, NigeriaHQ recorded Oct 22, 2026501-1,00072 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 · Oct 22, 2026 · View company records in RevenueBase
14Exact matchLagos, NigeriaHQ recorded Oct 22, 2026201-50069 contacts →

Exact match

“AOECL provides Drilling & Well completion, Manpower, Procurement, Dredging, Inspection, and EPCI services (Engineering, Procurement, Technical Consultancy, Facility Maintenance…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 2026201-50058 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 202651-20053 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 · Oct 22, 2026 · View company records in RevenueBase
17Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 202611-5053 contacts →

Exact match

“PEGIS GLOBAL Services Limited (PGSL) is a fast growing indigenous company with operational base in Port Harcourt, focused on providing services in the Oil and gas Industry in the…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 2026201-50052 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 · Oct 22, 2026 · View company records in RevenueBase
19Exact matchLekki, NigeriaHQ recorded Oct 22, 202611-5050 contacts →

Exact match

“Sellafield Energy is a leading oil and gas support provider that has within a short time, emerged as a reference point in recruitment services and technical manpower support…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 2026201-50048 contacts →

Exact match

“Fedoz Nigeria Limited (FNL) is a wholly indigenous oil and gas services company specializing in Engineering, Procurement, Construction, Installation, and Maintenance (EPCIM).”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21Exact matchVictoria Island, NigeriaHQ recorded Oct 22, 202611-5048 contacts →

Exact match

“GCA Energy Limited was registered in the late eighties as Greg Continental Agency Limited and acted as an Agency Company to Siemens Building Technologies UK Limited providing…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
22Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 202651-20043 contacts →

Exact match

“Goddie Chemicals International Limited is a leading premium chemical solutions and specialized engineering services expert, positioned to reliably serve as a one-stop shop for all…”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23Exact matchVictoria Island, NigeriaHQ recorded Oct 22, 202651-20043 contacts →

Exact match

“New Energy Services Company Limited (NESSCO) is a 100% Nigerian owned company incorporated in 2003.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 202651-20037 contacts →

Exact match

“Felton Energy Services Ltd (FESL) is an indigenous oil & gas procurement, operation and maintenance company in Nigeria.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25Exact matchPort Harcourt, NigeriaHQ recorded Oct 22, 202611-5037 contacts →

Exact match

“Summary ABOUT US: Hallmark Global Petroleum Ltd (HGP) was incorporated in 2002 as a 100% Nigerian owned and operated oil and gas Services Company.”

Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase

Showing 25 of 315 refinery services and maintenance companies based in Nigeria

See the full list, filter by size, metro and specialty, and access 498 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Refinery services and maintenance companies based in Nigeria at a glance

As of Oct 22, 2026
9.1%Verified-email coverage
17.4Average contacts per company
11-50Median size (employees)
32.1%Largest-city concentration · Port Harcourt
Oct 22, 2026Page data refreshed

Companies by employee count

1-10
54
11-50
144
51-200
73
201-500
26
501-1,000
16
1,001-5,000
2

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 315 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 services and maintenance 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 498 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 22, 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.

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 services and maintenance companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many refinery services and maintenance companies are there based in Nigeria?

RevenueBase identified 315 company matches for refinery services and maintenance companies associated with Nigeria 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?

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 services and maintenance companies?

Port Harcourt leads with 101 company records, followed by Lagos (62) and Rivers (23).

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 498 professional contacts with verified work emails tracked across these 315 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 22, 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.