Company lists · Data refreshed October 2026

Top 25 Offshore oil and gas operators based in Nigeria

RevenueBase identified 131 company matches for offshore oil and gas operators associated with Nigeria as of October 2026 and tracks 2,696 professional contacts across them, including 376 with verified work emails. Lagos is the largest hub.

This list covers company matches for offshore oil and gas operators 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
131Companies
2,696Contacts tracked
376Verified emails
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The 25 largest offshore oil and gas operators based in Nigeria

Ranked by team size
Top 25 of 131 company matches for offshore oil and gas operators 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 matchBenin City, NigeriaHQ recorded Oct 19, 20261,001-5,000308 contacts →

Exact match

“NNPC E&P Limited (NEPL), a wholly-owned subsidiary of the Nigerian National Petroleum Company Limited (NNPCL), operates as a prominent entity involved in the exploration and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact matchVictoria Island, NigeriaHQ recorded Oct 19, 202651-200189 contacts →

Exact match

“Amni International Petroleum Development Company Limited (Amni) is an Independent Oil & Gas Exploration & Production (E&P) company with its head office in Lagos, Nigeria.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchLagos, NigeriaHQ recorded Oct 19, 202651-200167 contacts →

Exact match

“Vision To be the preferred Integrated Upstream Oilfield Services Provider in Africa creating value for all stakeholders.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact 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
5Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 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 19, 2026 · View company records in RevenueBase
6Exact matchVictoria Island, NigeriaHQ recorded Oct 19, 202651-20052 contacts →

Exact match

“South Atlantic Petroleum Limited (SAPETRO) is a Nigerian Exploration and Production Company incorporated as a Private Limited Liability Company in 1995 and is the original holder…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchVictoria Island, NigeriaHQ recorded Oct 19, 2026201-50048 contacts →

Exact match

“Eroton is a major player in the upstream segment of the Oil and Gas sector in Nigeria.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchLagos Nigeria, NigeriaHQ recorded Oct 19, 2026201-50044 contacts →

Exact match

“STAC Marine Offshore is a prominent indigenous Nigerian company known for its commitment to service excellence in the operation and maintenance of Floating Production Storage and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchVictoria Island, NigeriaHQ recorded Oct 19, 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 19, 2026 · View company records in RevenueBase
10Exact matchLekki Phase 1, NigeriaHQ recorded Oct 19, 202651-20042 contacts →

Exact match

“Zamam Offshore Services Limited (ZOSL) is a Nigerian oilfield services company responsible for the provision of production support services to the oil and gas industry in Africa…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 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 19, 2026 · View company records in RevenueBase
12Exact matchLagos, NigeriaHQ recorded Oct 19, 2026201-50036 contacts →

Exact match

“Ocean Deep Drilling ESV Nigeria Limited (ODENL) is the Nigerian joint venture of Valaris, the world's leading offshore drilling services provider.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchWarri, NigeriaHQ recorded Oct 19, 202611-5033 contacts →

Exact match

“Deepwater Engineering Limited (DEL) is a multi-discipline service provider formed by experienced professionals with years of direct experience within the major offshore Oil and…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact matchLekki, NigeriaHQ recorded Oct 19, 202651-20030 contacts →

Exact match

“First Priority Resources International Ltd (FPRIL) is a vibrant oil servicing company that offers Marine Logistics, Procurement, Engineering and Equipment Rental services.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchLekki Phase 1, NigeriaHQ recorded Oct 19, 202651-20026 contacts →

Exact match

“SpringRock Group is a privately held energy company with main focus in the Oil and Gas and Power sectors of the energy domain.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 202611-5025 contacts →

Exact match

“STELOG Ltd since its establishment in 2008 and full offtake in 2012 is involved in Drilling, Intervention and Production services in the Oil and gas value chain.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 202651-20017 contacts →

Exact match

“B.G.Technical Limited (BGT) is an Oil Services company incorporated in 1988.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchLagos, NigeriaHQ recorded Oct 19, 202611-5015 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchVictoria Island, NigeriaHQ recorded Oct 19, 2026201-50013 contacts →

Exact match

“Nigdel United Oil Company Limited was incorporated as an oil and gas entity to carry on diverse activities in the oil and gas sector.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchLekki, NigeriaHQ recorded Oct 19, 202611-5013 contacts →

Exact match

“Rotawn Energy & Logistics specializes and has the requisite expertise and experience in the provision of Offshore Support Vessels Services, Maritime Security Services, Ship to…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchOnne, NigeriaHQ recorded Oct 19, 202611-5010 contacts →

Exact match

“Jarander Services Nigeria Limited formerly known as Jarander Mooring and Logistics Services Nigeria Limited is an indigenous Oil & Gas Servicing Company established in 2007 with…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22Exact matchPort-harcourt, NigeriaHQ recorded Oct 19, 202651-2009 contacts →

Exact match

“CD PRINCETON NIGERIA LIMITED is a fully registered company in Nigeria with the aim to deliver highly quality, cost effective and timely services and products to clients with its…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchLekki, NigeriaHQ recorded Oct 19, 202651-2009 contacts →

Exact match

“Derotech Offshore Services Limited is a preferred local offshore drilling company in Nigeria with technical support and ultramodern equipment from Pacific Drilling to respond to…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchLagos, NigeriaHQ recorded Oct 19, 202611-508 contacts →

Exact match

“Ofserv is an integrated energy company organized to harvest opportunities across the E&P value chain.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchPort Harcourt, NigeriaHQ recorded Oct 19, 202651-2007 contacts →

Exact match

“RAMEC Integrated Services Limited (RISL) is a subsidiary of the RAMEC GROUP, a wholly indigenous Nigerian company, offering services in Directional Drilling, Measurement While…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 131 offshore oil and gas operators based in Nigeria

See the full list, filter by size, metro and specialty, and access 376 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Offshore oil and gas operators based in Nigeria at a glance

As of Oct 19, 2026
13.9%Verified-email coverage
20.6Average contacts per company
11-50Median size (employees)
23.7%Largest-city concentration · Lagos
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
20
11-50
56
51-200
40
201-500
9
501-1,000
2
1,001-5,000
4

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 131 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 oil and gas operators” 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 376 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 oil and gas operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many offshore oil and gas operators are there based in Nigeria?

RevenueBase identified 131 company matches for offshore oil and gas operators 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?

Nnpc E&p Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most offshore oil and gas operators?

Lagos leads with 31 company records, followed by Port Harcourt (31) and Rivers (8).

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 376 professional contacts with verified work emails tracked across these 131 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.