Company lists · Data refreshed October 2026

Top 25 Deepwater intervention contractors based in Nigeria

Name: Deepwater intervention contractors based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 11, 2026 177 companies tracked

RevenueBase identified 177 company matches for deepwater intervention contractors associated with Nigeria as of October 2026 and tracks 3,405 professional contacts across them, including 467 with verified work emails. Port Harcourt is the largest hub.

This list covers company matches for deepwater intervention 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 11, 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 11, 2026 How this list was built

177Companies

3,405Contacts tracked

467Verified emails

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The 25 largest deepwater intervention contractors based in Nigeria

Ranked by team size

Top 25 of 177 company matches for deepwater intervention contractors based in Nigeria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Hydrodive Group	Exact match	Lagos, NigeriaHQ recorded Oct 11, 2026	201-500	431 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 11, 2026 · View company records in RevenueBase
2	Marine Platforms Limited	Exact match	Victoria Island, NigeriaHQ recorded Oct 11, 2026	201-500	382 contacts →
	Exact match “Marine Platforms is an oil service company focused on providing diverse services to the upstream sector of the oil & gas industry in Nigeria and the African continent sustainably.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
3	Geoplex Drillteq Limited	Exact match	Victoria Island, NigeriaHQ recorded Oct 11, 2026	201-500	360 contacts →
	Exact match “Geoplex Drillteq Limited is the fastest-growing indigenous service provider in Sub-Saharan Africa, proudly holding the API Q2 certification, a testament to our commitment to…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
4	Emval Nigeria Limited	Exact match	Lekki, NigeriaHQ recorded Oct 11, 2026	51-200	112 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 11, 2026 · View company records in RevenueBase
5	Hydroserve Group	Exact match	Port Harcourt, NigeriaHQ recorded Oct 11, 2026	51-200	93 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 11, 2026 · View company records in RevenueBase
6	Aviam Offshore Engineering Company Limited	Exact match	Lagos, NigeriaHQ recorded Oct 11, 2026	201-500	69 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 11, 2026 · View company records in RevenueBase
7	Pegis Global Services Limited	Exact match	Port Harcourt, NigeriaHQ recorded Oct 11, 2026	11-50	53 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 11, 2026 · View company records in RevenueBase
8	Sellafield Energy	Exact match	Lekki, NigeriaHQ recorded Oct 11, 2026	11-50	50 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 11, 2026 · View company records in RevenueBase
9	OIL Quest International Limited	Exact match	Port Harcourt, NigeriaHQ recorded Oct 11, 2026	201-500	49 contacts →
	Exact match “Oil Quest International Limited (OQIL) is an indigenous Oil and Gas integrated technical support Service Company incorporated in Nigeria as a limited liability company on 11th…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
10	NEW Energy Services Company Limited	Exact match	Victoria Island, NigeriaHQ recorded Oct 11, 2026	51-200	43 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 11, 2026 · View company records in RevenueBase
11	Zamam Offshore Services Limited	Exact match	Lekki Phase 1, NigeriaHQ recorded Oct 11, 2026	51-200	42 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 11, 2026 · View company records in RevenueBase
12	Hallmark Global Petroleum Limited	Exact match	Port Harcourt, NigeriaHQ recorded Oct 11, 2026	11-50	37 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 11, 2026 · View company records in RevenueBase
13	Deepwater Engineering Limited DEL	Exact match	Warri, NigeriaHQ recorded Oct 11, 2026	11-50	33 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 11, 2026 · View company records in RevenueBase
14	Subsea100 Global	Exact match	Port Harcourt, NigeriaHQ recorded Oct 11, 2026	11-50	31 contacts →
	Exact match “Overview Subsea100 Global(SHG), established in 2011, is a leading independent Offshore Services Contractor providing a range of Geophysical, Geotechnical and Subsea related…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
15	First Priority Resources International Limited	Exact match	Lekki, NigeriaHQ recorded Oct 11, 2026	51-200	30 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 11, 2026 · View company records in RevenueBase
16	TAG Energy Limited	Exact match	Lekki, NigeriaHQ recorded Oct 11, 2026	11-50	30 contacts →
	Exact match “TAG Energy is an integrated service company offering a comprehensive range of oilfield products and support services in the Nigerian Oil and Gas Industry.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17	Omasup Energy Services Limited	Exact match	Port Harcourt, NigeriaHQ recorded Oct 11, 2026	11-50	26 contacts →
	Exact match “Oil & Gas Services company” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
18	Stelog Energy Group	Exact match	Port Harcourt, NigeriaHQ recorded Oct 11, 2026	11-50	25 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 11, 2026 · View company records in RevenueBase
19	XPO Marine Services Limited	Exact match	Victoria Island, NigeriaHQ recorded Oct 11, 2026	11-50	21 contacts →
	Exact match “XPO Marine Services is an integrated provider of offshore marine support services to the oil and gas industry in West Africa.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20	Matpatson Petroleum Services Limited	Exact match	Port Harcourt, NigeriaHQ recorded Oct 11, 2026	201-500	21 contacts →
	Exact match “Matpatson Petroleum Services is your One-Stop-Shop for Oilfield Services and Solutions with Qualified Manpower and Expertise” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21	Atlantic Fenders And Support Services	Exact match	Lagos Island, NigeriaHQ recorded Oct 11, 2026	51-200	18 contacts →
	Exact match “Welcome to the AFSS business page.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22	Atlantic Marine & Oilfield Services LTD	Exact match	Ikoyi, NigeriaHQ recorded Oct 11, 2026	51-200	17 contacts →
	Exact match “Atlantic Marine & Oilfield Services has been operating as a distinguished Subsea Engineering and Diving Company since maintaining an ISO 9001-2015 certification.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23	Deep Water Consultancy & Engineering Services LTD	Exact match	Lekki, NigeriaHQ recorded Oct 11, 2026	11-50	15 contacts →
	Exact match “DeepWater Consultancy & Engineering Services Limited is an Independent Oil and Gas Subsea technology, Pipeline management and Field development engineering consultancy company…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24	Tethys Plantgeria LTD	Exact match	Port Harcourt, NigeriaHQ recorded Oct 11, 2026	11-50	14 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25	Royal Niger Emerging Technologies Limited	Exact match	Victoria Island, NigeriaHQ recorded Oct 11, 2026	11-50	13 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “deepwater intervention contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 177 deepwater intervention contractors based in Nigeria

See the full list, filter by size, metro and specialty, and access 467 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Deepwater intervention contractors based in Nigeria at a glance

As of Oct 11, 2026

13.7%Verified-email coverage

19.2Average contacts per company

11-50Median size (employees)

27.1%Largest-city concentration · Port Harcourt

Oct 11, 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 177 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 “deepwater intervention 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 467 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 11, 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.

Deepwater intervention contractors by metro

Deepwater intervention contractors in Port Harcourt48

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 “deepwater intervention contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many deepwater intervention contractors are there based in Nigeria?

RevenueBase identified 177 company matches for deepwater intervention 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?

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

Which city has the most deepwater intervention contractors?

Port Harcourt leads with 48 company records, followed by Lagos (36) and Rivers (14).

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 467 professional contacts with verified work emails tracked across these 177 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 11, 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.