Company lists · Data refreshed September 2026

Top 24 Offshore oil companies based in Nigeria

Name: Offshore oil companies based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 90 companies tracked

RevenueBase identified 90 offshore oil companies headquartered in Nigeria as of September 2026 and tracks 1,562 professional contacts across them, including 209 with verified work emails. Lagos is the largest hub.

This list covers offshore oil companies headquartered in Nigeria, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

90Companies

1,562Contacts tracked

209Verified emails

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The 24 largest offshore oil companies based in Nigeria

Ranked by team size

Top 24 of 90 offshore oil companies based in Nigeria, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to offshore oil companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	OES Energy Services Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	51-200	172 contacts →
	Indirect evidence “Vision To be the preferred Integrated Upstream Oilfield Services Provider in Africa creating value for all stakeholders.” Source: RevenueBase Database · checked Sep 20, 2026
2	Emval Nigeria Limited	Strong evidence	Lekki, NigeriaHQ checked Sep 20, 2026	51-200	109 contacts →
	Strong evidence “The Company Emval Nigeria Limited is a servicing company that provides onshore and offshore technical services to the Oil & Gas industry.” Source: RevenueBase Database · checked Sep 20, 2026
3	Caverton Offshore Support Group PLC	Partial evidence	Victoria Island, NigeriaHQ checked Sep 20, 2026	501-1,000	88 contacts →
	Partial evidence “Caverton Offshore Support Group Plc is the public limited company holding Caverton Helicopters Limited and Caverton Marine Limited.” Source: RevenueBase Database · checked Sep 20, 2026
4	Hydroserve Group	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	51-200	86 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
5	Aviam Offshore Engineering Company Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	201-500	73 contacts →
	Indirect evidence “AOECL provides Drilling & Well completion, Manpower, Procurement, Dredging, Inspection, and EPCI services (Engineering, Procurement, Technical Consultancy, Facility Maintenance…” Source: RevenueBase Database · checked Sep 20, 2026
6	Eroton Exploration & Production Company	Partial evidence	Victoria Island, NigeriaHQ checked Sep 20, 2026	201-500	53 contacts →
	Partial evidence “Eroton is a major player in the upstream segment of the Oil and Gas sector in Nigeria.” Source: RevenueBase Database · checked Sep 20, 2026
7	NEW Energy Services Company Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 20, 2026	51-200	45 contacts →
	Indirect evidence “New Energy Services Company Limited (NESSCO) is a 100% Nigerian owned company incorporated in 2003.” Source: RevenueBase Database · checked Sep 20, 2026
8	Zamam Offshore Services Limited	Strong evidence	Lekki Phase 1, NigeriaHQ checked Sep 20, 2026	51-200	36 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
9	ODENL	Partial evidence	Lagos, NigeriaHQ checked Sep 20, 2026	201-500	36 contacts →
	Partial evidence “Ocean Deep Drilling ESV Nigeria Limited (ODENL) is the Nigerian joint venture of Valaris, the world's leading offshore drilling services provider.” Source: RevenueBase Database · checked Sep 20, 2026
10	Springrock Group	Partial evidence	Lekki Phase 1, NigeriaHQ checked Sep 20, 2026	51-200	31 contacts →
	Partial evidence “SpringRock Group is a privately held energy company with main focus in the Oil and Gas and Power sectors of the energy domain.” Source: RevenueBase Database · checked Sep 20, 2026
11	Deepwater Engineering Limited DEL	Strong evidence	Warri, NigeriaHQ checked Sep 20, 2026	11-50	29 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
12	First Priority Resources International Limited	Partial evidence	Lekki, NigeriaHQ checked Sep 20, 2026	51-200	26 contacts →
	Partial evidence “First Priority Resources International Ltd (FPRIL) is a vibrant oil servicing company that offers Marine Logistics, Procurement, Engineering and Equipment Rental services.” Source: RevenueBase Database · checked Sep 20, 2026
13	Nondera Energy Services	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “Nondera Energy Services is an ISO 9001:2015 certified company that provides telecommunications, engineering, procurement and technical assistance and drilling services to clients…” Source: RevenueBase Database · checked Sep 20, 2026
14	Stelog Energy Group	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	11-50	23 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
15	B G Technical Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 20, 2026	51-200	14 contacts →
	Partial evidence “B.G.Technical Limited (BGT) is an Oil Services company incorporated in 1988.” Source: RevenueBase Database · checked Sep 20, 2026
16	Afrikdelta Marine Limited Adml	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
17	Royal Niger Emerging Technologies Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence “At the Royal Niger we pride ourselves on providing Hydraulics, Controls, Drilling and production equipment and services to the local and international energy and marine industries.” Source: RevenueBase Database · checked Sep 20, 2026
18	Timproxy	Partial evidence	Lagos, NigeriaHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “Timproxy operates a diversified business with a special focus on Oil and Gas, Marine, and Power industry.” Source: RevenueBase Database · checked Sep 20, 2026
19	CD Princeton	Indirect evidence	Port-harcourt, NigeriaHQ checked Sep 20, 2026	51-200	10 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
20	Derotech Offshore Services Limited	Partial evidence	Lekki, NigeriaHQ checked Sep 20, 2026	51-200	8 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
21	Ofserv	Indirect evidence	Lagos, NigeriaHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “Ofserv is an integrated energy company organized to harvest opportunities across the E&P value chain.” Source: RevenueBase Database · checked Sep 20, 2026
22	Kaizen Global Engineering Solutions Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence “Kaizen Global Engineering Solutions Ltd.” Source: RevenueBase Database · checked Sep 20, 2026
23	Blue Tide LTD	Indirect evidence	Port, NigeriaHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “We are an indigenous company, based in PortHarcourt Rivers State, Nigeria.” Source: RevenueBase Database · checked Sep 20, 2026
24	Suntrust OIL Company Nigeria LTD	Partial evidence	Lagos, NigeriaHQ checked Sep 20, 2026	11-50	2 contacts →
	Partial evidence “SunTrust Oil Company Nigeria Limited was incorporated on April 4, 2001.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: offshore oil companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names offshore oil companies.
Partial evidence: Its own public description names part of offshore oil companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore oil companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 24 of 90 offshore oil companies based in Nigeria

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Offshore oil companies based in Nigeria at a glance

As of Sep 20, 2026

13.4%Verified-email coverage

17.4Average contacts per company

11-50Median size (employees)

23.3%Largest-city concentration · Lagos

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 90 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among offshore oil companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Nigeria whose own description of what they do matches “offshore oil companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names offshore oil companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among offshore oil companies, and records with no verified work email. Companies headquartered outside Nigeria are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 209 across the full list. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names offshore oil companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many offshore oil companies are there based in Nigeria?

RevenueBase identified 90 offshore oil companies headquartered in Nigeria as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

OES Energy Services Limited, headquartered in Nigeria, tops this list with the largest team on record.

Which city has the most offshore oil companies?

Lagos leads with 21 headquartered companies, followed by Port Harcourt (19) and Lagos State (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 209 verified decision-maker contacts tracked across these 90 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 Smart Search, 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.