Company lists · Data refreshed November 2026

Top 14 Petroleum refinery builders based in Nigeria

RevenueBase identified 98 company matches for petroleum refinery builders associated with Nigeria as of November 2026 and tracks 2,410 professional contacts across them, including 459 with verified work emails. Port Harcourt is the largest hub.

This list covers company matches for petroleum refinery builders 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 November 6, 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 Nov 6, 2026 How this list was built
98Companies
2,410Contacts tracked
459Verified emails
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The 14 largest petroleum refinery builders based in Nigeria

Ranked by team size
Top 14 of 98 company matches for petroleum refinery builders based in Nigeria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 Nov 6, 2026501-1,000320 contacts →

Exact match

“Dover Engineering Limited is a reputable Engineering Design,EPC, Operations & Maintenance Company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLagos, NigeriaHQ recorded Nov 6, 2026201-500267 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPort Harcourt, NigeriaHQ recorded Nov 6, 202611-50143 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPort Harcourt, NigeriaHQ recorded Nov 6, 202611-5058 contacts →

Exact match

“Weltek Limited is a Nigerian engineering and energy-services company established in 1986.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchPort Harcourt, NigeriaHQ recorded Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchIkeja, NigeriaHQ recorded Nov 6, 202611-5039 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 · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLekki Phase 1, NigeriaHQ recorded Nov 6, 202651-20028 contacts →

Exact match

“GMUNU is a full-service Engineering Procurement and Construction Company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchKaduna, NigeriaHQ recorded Nov 6, 2026201-50026 contacts →

Exact match

“Supasteel Limited is a wholly indigenously owned Engineering Procurement and construction Company carrying out Fabrication, Installation, Repair of Static and Rotating Equipment…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLekki Phase 1, NigeriaHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Cozym Limited is a family of Engineers and Consultants with core competencies in the areas of Feasibility Studies, Front End and Detailed Engineering Designs, Materials…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchLekki, NigeriaHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“PIECURVE was founded by a team of leading consultants in engineering and project management with years of experience in Africa (Nigeria, Equatorial Guinea, Cameroon, Angola) and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchVictoria Island, NigeriaHQ recorded Nov 6, 202651-20015 contacts →

Exact match

“We efficiently refine crude oil in an environment-friendly way.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchVictoria Island, NigeriaHQ recorded Nov 6, 2026201-50014 contacts →

Exact match

“For over 40 years, DESICON Engineering Limited has been an indigenous industry leader providing innovative Engineering, Procurement and Construction (EPC) solutions to our clients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPort Harcourt, NigeriaHQ recorded Nov 6, 20261-108 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchIbeju-lekki, NigeriaHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Offshore Dimensions Limited: Leading Engineering, Procurement and Construction Management Company in Nigeria Servicing the Energy, Oil and Gas We are a renowned engineering…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 14 of 98 petroleum refinery builders based in Nigeria

See the full list, filter by size, metro and specialty, and access 459 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Petroleum refinery builders based in Nigeria at a glance

As of Nov 6, 2026
19.0%Verified-email coverage
24.6Average contacts per company
11-50Median size (employees)
22.4%Largest-city concentration · Port Harcourt
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
38
51-200
24
201-500
14
501-1,000
2
1,001-5,000
3
10001+
1

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 98 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 “petroleum refinery builders” 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 459 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 November 6, 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 “petroleum refinery builders”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many petroleum refinery builders are there based in Nigeria?

RevenueBase identified 98 company matches for petroleum refinery builders associated with Nigeria as of November 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?

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

Which city has the most petroleum refinery builders?

Port Harcourt leads with 22 company records, followed by Lagos (20) and Lagos State (10).

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 459 professional contacts with verified work emails tracked across these 98 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 November 6, 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.