Company lists · Data refreshed November 2026

Top 25 Oil drilling contractors based in Nigeria

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

Compiled by the RevenueBase Data Team Data refreshed Nov 4, 2026 190 companies tracked

RevenueBase identified 190 company matches for oil drilling contractors associated with Nigeria as of November 2026 and tracks 3,600 professional contacts across them, including 405 with verified work emails. Port Harcourt is the largest hub.

This list covers company matches for oil drilling 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 November 4, 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 4, 2026 How this list was built

190Companies

3,600Contacts tracked

405Verified emails

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The 25 largest oil drilling contractors based in Nigeria

Ranked by team size

Top 25 of 190 company matches for oil drilling contractors based in Nigeria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 4, 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	AOS Orwell Limited	Exact match	Port Harcourt, NigeriaHQ recorded Nov 4, 2026	1,001-5,000	507 contacts →
	Exact match “AOS Orwell Limited is the largest indigenous Oilfield Services Company in Nigeria.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
2	OES Energy Services Limited	Exact match	Lagos, NigeriaHQ recorded Nov 4, 2026	51-200	179 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 · Nov 4, 2026 · View company records in RevenueBase
3	Bell OIL & GAS	Exact match	Lagos, NigeriaHQ recorded Nov 4, 2026	51-200	149 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 · Nov 4, 2026 · View company records in RevenueBase
4	Emval Nigeria Limited	Exact match	Lekki, NigeriaHQ recorded Nov 4, 2026	51-200	125 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 · Nov 4, 2026 · View company records in RevenueBase
5	Depthwize	Exact match	Lagos, NigeriaHQ recorded Nov 4, 2026	201-500	109 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 · Nov 4, 2026 · View company records in RevenueBase
6	Aviam Offshore Engineering Company Limited	Exact match	Lagos, NigeriaHQ recorded Nov 4, 2026	201-500	72 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 · Nov 4, 2026 · View company records in RevenueBase
7	Enikkom Construction Limited	Exact match	Lagos, NigeriaHQ recorded Nov 4, 2026	201-500	58 contacts →
	Exact match “ENIKKOM GROUP is a wholly indigenous company that was incorporated in 1995 to handle special investment portfolio in the different sub-sectors of the economy, like the engineering…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
8	Field Offshore Design Engineering LTD	Exact match	Lagos, NigeriaHQ recorded Nov 4, 2026	51-200	53 contacts →
	Exact match “Oil and Gas servicing company.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9	OIL Quest International Limited	Exact match	Port Harcourt, NigeriaHQ recorded Nov 4, 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 · Nov 4, 2026 · View company records in RevenueBase
10	NEW Energy Services Company Limited	Exact match	Victoria Island, NigeriaHQ recorded Nov 4, 2026	51-200	49 contacts →
	Exact match “New Energy Services Company Limited (NESSCO) is a 100% Nigerian owned company incorporated in 2003.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
11	Zamam Offshore Services Limited	Exact match	Lekki Phase 1, NigeriaHQ recorded Nov 4, 2026	51-200	43 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 · Nov 4, 2026 · View company records in RevenueBase
12	ODENL	Exact match	Lagos, NigeriaHQ recorded Nov 4, 2026	201-500	39 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 · Nov 4, 2026 · View company records in RevenueBase
13	Hallmark Global Petroleum Limited	Exact match	Port Harcourt, NigeriaHQ recorded Nov 4, 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 · Nov 4, 2026 · View company records in RevenueBase
14	First Priority Resources International Limited	Exact match	Lekki, NigeriaHQ recorded Nov 4, 2026	51-200	32 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 · Nov 4, 2026 · View company records in RevenueBase
15	Omasup Energy Services Limited	Exact match	Port Harcourt, NigeriaHQ recorded Nov 4, 2026	11-50	26 contacts →
	Exact match “Oil & Gas Services company” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16	Stelog Energy Group	Exact match	Port Harcourt, NigeriaHQ recorded Nov 4, 2026	11-50	26 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 · Nov 4, 2026 · View company records in RevenueBase
17	Bicens Resources Limited	Exact match	Warri, NigeriaHQ recorded Nov 4, 2026	501-1,000	22 contacts →
	Exact match “Bicens Resources Limited is a tech savvy multidisciplinary firm with competencies in the Oil & Gas Industry, Providing and delivering exceptional solutions in DRILLING,OPERATIONS…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
18	Matpatson Petroleum Services Limited	Exact match	Port Harcourt, NigeriaHQ recorded Nov 4, 2026	201-500	20 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 · Nov 4, 2026 · View company records in RevenueBase
19	Ejovi Dredging And Marine Services Limited	Exact match	Effurun Delta State, NigeriaHQ recorded Nov 4, 2026	201-500	16 contacts →
	Exact match “For over two decades, Ejovi Dredging and Marine Service has been a major player in the Nigerian Oil & Gas Industry, providing world class service to her clients.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20	Mesc Energy Services	Exact match	Port Harcourt, NigeriaHQ recorded Nov 4, 2026	11-50	12 contacts →
	Exact match “MESC Energy Services offers drilling, well intervention, pipeline and asset integrity services focused to deliver efficiency.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
21	Energeria	Exact match	Lagos, NigeriaHQ recorded Nov 4, 2026	11-50	12 contacts →
	Exact match “Energeria is a provider of oilfield services and equipment and services to the upstream and midstream petroleum industry in Nigeria.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
22	Derotech Offshore Services Limited	Exact match	Lekki, NigeriaHQ recorded Nov 4, 2026	51-200	11 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 · Nov 4, 2026 · View company records in RevenueBase
23	CD Princeton	Exact match	Port-harcourt, NigeriaHQ recorded Nov 4, 2026	51-200	10 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 · Nov 4, 2026 · View company records in RevenueBase
24	Ramec Integrated Services Limited Risl A Subsidiary Of Ramec Group	Exact match	Port Harcourt, NigeriaHQ recorded Nov 4, 2026	51-200	9 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 · Nov 4, 2026 · View company records in RevenueBase
25	Gincoc Nigeria Limited	Exact match	Lagos, NigeriaHQ recorded Nov 4, 2026	1-10	7 contacts →
	Exact match “Gincoc Nigeria Limited is a wholly indigenous Oil and Gas Service Providing Company in Nigeria, which was incorporated in 1994.” Recorded in the RevenueBase company graph · Nov 4, 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 “oil drilling 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 190 oil drilling contractors based in Nigeria

See the full list, filter by size, metro and specialty, and access 405 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil drilling contractors based in Nigeria at a glance

As of Nov 4, 2026

11.2%Verified-email coverage

18.9Average contacts per company

11-50Median size (employees)

34.2%Largest-city concentration · Port Harcourt

Nov 4, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 190 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 “oil drilling 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 405 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 4, 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 “oil drilling contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil drilling contractors are there based in Nigeria?

RevenueBase identified 190 company matches for oil drilling contractors 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?

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

Which city has the most oil drilling contractors?

Port Harcourt leads with 65 company records, followed by Rivers (19) and Lagos (16).

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 405 professional contacts with verified work emails tracked across these 190 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 4, 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.