Company lists · Data refreshed October 2026

Top 25 Offshore infrastructure contractors based in Nigeria

RevenueBase identified 484 company matches for offshore infrastructure contractors associated with Nigeria as of October 2026 and tracks 10,072 professional contacts across them, including 1,335 with verified work emails. Port Harcourt is the largest hub.

This list covers company matches for offshore infrastructure 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 October 19, 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 19, 2026 How this list was built
484Companies
10,072Contacts tracked
1,335Verified emails
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The 25 largest offshore infrastructure contractors based in Nigeria

Ranked by team size
Top 25 of 484 company matches for offshore infrastructure contractors based in Nigeria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 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 matchVictoria Island, NigeriaHQ recorded Oct 19, 20261,001-5,000705 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 · Oct 19, 2026 · View company records in RevenueBase
2Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 2026501-1,000547 contacts →

Exact match

“Oilserv Limited is an Oil & Gas EPCIC (Pipeline & Facilities) Company incorporated in 1992 and commenced business in 1995 with the mission to provide Engineering, Procurement…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchLagos, NigeriaHQ recorded Oct 19, 2026201-500431 contacts →

Exact match

“HydroDive provides a broad range of Marine Vessels, Air, Mixed Gas and Saturation Diving, ROV, AUV and Survey Services primarily to the offshore & inshore Petroleum Industry of…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 20261,001-5,000420 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 · Oct 19, 2026 · View company records in RevenueBase
5Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 2026501-1,000312 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchLagos, NigeriaHQ recorded Oct 19, 2026201-500252 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 · Oct 19, 2026 · View company records in RevenueBase
7Exact matchVictoria Island, NigeriaHQ recorded Oct 19, 2026201-500224 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 · Oct 19, 2026 · View company records in RevenueBase
8Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 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 19, 2026 · View company records in RevenueBase
9Exact matchLagos, NigeriaHQ recorded Oct 19, 202651-200137 contacts →

Exact match

“Bell Oil & Gas has grown rapidly to become a leading indigenous oil service company in Nigeria.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchLekki, NigeriaHQ recorded Oct 19, 2026201-500131 contacts →

Exact match

“Prime Sources Limited a Nigerian company established in 2001 as an EPIC company has kept the flag of quality services flying high and is a one stop shop company safely offering…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 202611-50128 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 · Oct 19, 2026 · View company records in RevenueBase
12Exact matchLagos, NigeriaHQ recorded Oct 19, 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 19, 2026 · View company records in RevenueBase
13Exact matchIkoyi, NigeriaHQ recorded Oct 19, 2026501-1,000117 contacts →

Exact match

“Lee Engineering and Construction Co.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact matchLekki, NigeriaHQ recorded Oct 19, 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 19, 2026 · View company records in RevenueBase
15Exact matchLagos, NigeriaHQ recorded Oct 19, 2026201-500108 contacts →

Exact match

“Depthwize is a Nigerian Drilling Contractor with current assets in the swamp and shallow offshore drilling market.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchLagos, NigeriaHQ recorded Oct 19, 202651-20090 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 · Oct 19, 2026 · View company records in RevenueBase
17Exact matchVictoria Island, NigeriaHQ recorded Oct 19, 2026501-1,00087 contacts →

Exact match

“Caverton Offshore Support Group Plc is the public limited company holding Caverton Helicopters Limited and Caverton Marine Limited.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchWarri, NigeriaHQ recorded Oct 19, 202651-20078 contacts →

Exact match

“NATONY LIMITED RC.105963 is a Nigerian Contracting Company Engaged in Civil, Mechanical Fabrications and Installation, Electrical and Instrumentation, Diving / Remote Operated…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchLagos, NigeriaHQ recorded Oct 19, 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 19, 2026 · View company records in RevenueBase
20Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 202651-20066 contacts →

Exact match

“West Atlantic Shipyard is a Subsidiary of the PIRIOU group formed in 2004 in Nigeria.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 2026201-50058 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22Exact matchWarri, NigeriaHQ recorded Oct 19, 202651-20058 contacts →

Exact match

“BABLINK RESOURCES NIGERIA LTD is a Nigerian owned EPCI Company poised to offer total Engineering and Construction solution to service demands of the Nation’s Oil, Gas and Energy…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchLagos, NigeriaHQ recorded Oct 19, 2026501-1,00057 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 · Oct 19, 2026 · View company records in RevenueBase
24Exact matchLagos, NigeriaHQ recorded Oct 19, 202651-20056 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 · Oct 19, 2026 · View company records in RevenueBase
25Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 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 19, 2026 · View company records in RevenueBase

Showing 25 of 484 offshore infrastructure contractors based in Nigeria

See the full list, filter by size, metro and specialty, and access 1,335 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore infrastructure contractors based in Nigeria at a glance

As of Oct 19, 2026
13.3%Verified-email coverage
20.8Average contacts per company
11-50Median size (employees)
28.9%Largest-city concentration · Port Harcourt
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
80
11-50
192
51-200
126
201-500
58
501-1,000
18
1,001-5,000
7
5,001-10,000
1
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 484 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 “offshore infrastructure 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 1,335 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 19, 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 “offshore infrastructure contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore infrastructure contractors are there based in Nigeria?

RevenueBase identified 484 company matches for offshore infrastructure contractors 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?

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

Which city has the most offshore infrastructure contractors?

Port Harcourt leads with 140 company records, followed by Lagos (91) and Lagos State (29).

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 1,335 professional contacts with verified work emails tracked across these 484 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 19, 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.