Company lists · Data refreshed September 2026

Top 25 Drilling contractors based in Nigeria

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 186 companies tracked

RevenueBase identified 186 drilling contractors headquartered in Nigeria as of September 2026 and tracks 2,251 professional contacts across them, including 114 with verified work emails. Port Harcourt is the largest hub.

This list covers drilling contractors 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 16, 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 16, 2026 86% judged on-target in blind review

186Companies

2,251Contacts tracked

114Verified emails

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The 25 largest drilling contractors based in Nigeria

Ranked by team size

Top 25 of 186 drilling contractors based in Nigeria, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to drilling contractors: 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	Depthwize	Strong evidence	Lagos, NigeriaHQ checked Sep 16, 2026	201-500	102 contacts →
	Strong evidence “Depthwize is a Nigerian Drilling Contractor with current assets in the swamp and shallow offshore drilling market.” Source: RevenueBase Database · checked Sep 16, 2026
2	Aviam Offshore Engineering Company Limited	Partial evidence	Lagos, NigeriaHQ checked Sep 16, 2026	201-500	73 contacts →
	Partial evidence “AOECL provides Drilling & Well completion, Manpower, Procurement, Dredging, Inspection, and EPCI services (Engineering, Procurement, Technical Consultancy, Facility Maintenance…” Source: RevenueBase Database · checked Sep 16, 2026
3	OIL Quest International Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 16, 2026	201-500	50 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
4	Field Offshore Design Engineering LTD	Indirect evidence	Lagos, NigeriaHQ checked Sep 16, 2026	51-200	48 contacts →
	Indirect evidence “Oil and Gas servicing company.” Source: RevenueBase Database · checked Sep 16, 2026
5	Melcurt Limited	Indirect evidence	Osubi-warri, NigeriaHQ checked Sep 16, 2026	201-500	45 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
6	NEW Energy Services Company Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 16, 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 16, 2026
7	Enikkom Construction Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 16, 2026	201-500	40 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 16, 2026
8	Hamilton Technologies Limited Official Page	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 16, 2026	51-200	38 contacts →
	Partial evidence “Hamilton Technologies Limited is the largest indigenous, new generation drilling fluids company in Nigeria providing solutions in; Mud Engineering/Drilling Support Services…” Source: RevenueBase Database · checked Sep 16, 2026
9	ODENL	Partial evidence	Lagos, NigeriaHQ checked Sep 16, 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 16, 2026
10	Debyl Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 16, 2026	11-50	32 contacts →
	Indirect evidence “DEBYL LIMITED is an indigenous company.” Source: RevenueBase Database · checked Sep 16, 2026
11	Deepwater Engineering Limited DEL	Indirect evidence	Warri, NigeriaHQ checked Sep 16, 2026	11-50	29 contacts →
	Indirect 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 16, 2026
12	Omasup Energy Services Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 16, 2026	11-50	24 contacts →
	Indirect evidence “Oil & Gas Services company” Source: RevenueBase Database · checked Sep 16, 2026
13	Stelog Energy Group	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 16, 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 16, 2026
14	Bicens Resources Limited	Partial evidence	Warri, NigeriaHQ checked Sep 16, 2026	501-1,000	22 contacts →
	Partial evidence “Bicens Resources Limited is a tech savvy multidisciplinary firm with competencies in the Oil & Gas Industry, Providing and delivering exceptional solutions in DRILLING,OPERATIONS…” Source: RevenueBase Database · checked Sep 16, 2026
15	Oretol Nigeria Limited	Indirect evidence	Lekki Phase 1 Right, NigeriaHQ checked Sep 16, 2026	201-500	16 contacts →
	Indirect evidence “Oretol Nigeria Limited is one of the leading providers of dredging services, real estate and construction firm in Nigeria.” Source: RevenueBase Database · checked Sep 16, 2026
16	Atlantic Marine & Oilfield Services LTD	Indirect evidence	Ikoyi, NigeriaHQ checked Sep 16, 2026	51-200	15 contacts →
	Indirect evidence “Atlantic Marine & Oilfield Services has been operating as a distinguished Subsea Engineering and Diving Company since maintaining an ISO 9001-2015 certification.” Source: RevenueBase Database · checked Sep 16, 2026
17	Ejovi Dredging And Marine Services Limited	Indirect evidence	Effurun Delta State, NigeriaHQ checked Sep 16, 2026	201-500	13 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
18	Energeria	Indirect evidence	Lagos, NigeriaHQ checked Sep 16, 2026	11-50	11 contacts →
	Indirect evidence “Energeria is a provider of oilfield services and equipment and services to the upstream and midstream petroleum industry in Nigeria.” Source: RevenueBase Database · checked Sep 16, 2026
19	Ramec Integrated Services Limited Risl A Subsidiary Of Ramec Group	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 16, 2026	51-200	10 contacts →
	Partial evidence “RAMEC Integrated Services Limited (RISL) is a subsidiary of the RAMEC GROUP, a wholly indigenous Nigerian company, offering services in Directional Drilling, Measurement While…” Source: RevenueBase Database · checked Sep 16, 2026
20	Mesc Energy Services	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 16, 2026	11-50	8 contacts →
	Partial evidence “MESC Energy Services offers drilling, well intervention, pipeline and asset integrity services focused to deliver efficiency.” Source: RevenueBase Database · checked Sep 16, 2026
21	Derotech Offshore Services Limited	Partial evidence	Lekki, NigeriaHQ checked Sep 16, 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 16, 2026
22	Mavi Energy Development Company Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 16, 2026	11-50	7 contacts →
	Indirect evidence “Mavi Energy Development Company Limited (MEDCOL) is a leading provider of comprehensive solutions for the upstream oil and gas sector.” Source: RevenueBase Database · checked Sep 16, 2026
23	Kaizen Global Engineering Solutions Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 16, 2026	1-10	5 contacts →
	Indirect evidence “Kaizen Global Engineering Solutions Ltd.” Source: RevenueBase Database · checked Sep 16, 2026
24	Wedcon Petroleum	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 16, 2026	11-50	4 contacts →
	Indirect evidence “Wedcon Petroleum was incorporated as a limited liability company in 1979.” Source: RevenueBase Database · checked Sep 16, 2026
25	Gincoc Nigeria Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 16, 2026	1-10	3 contacts →
	Indirect evidence “Gincoc Nigeria Limited is a wholly indigenous Oil and Gas Service Providing Company in Nigeria, which was incorporated in 1994.” Source: RevenueBase Database · checked Sep 16, 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: drilling contractors. 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 drilling contractors.
Partial evidence: Its own public description names part of drilling contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name drilling contractors. 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 25 of 186 drilling contractors based in Nigeria

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Drilling contractors based in Nigeria at a glance

As of Sep 16, 2026

5.1%Verified-email coverage

12.1Average contacts per company

11-50Median size (employees)

31.2%Largest-city concentration · Port Harcourt

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 186 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 drilling contractors, 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 “drilling contractors”. 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 drilling contractors), 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 drilling contractors, 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, 114 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 16, 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.

Drilling contractors by metro

Drilling contractors in Port Harcourt58

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 drilling contractors, 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 drilling contractors are there based in Nigeria?

RevenueBase identified 186 drilling contractors 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?

Depthwize, headquartered in Lagos, tops this list with the largest team on record.

Which city has the most drilling contractors?

Port Harcourt leads with 58 headquartered companies, followed by Lagos (20) and Rivers (15).

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 114 verified decision-maker contacts tracked across these 186 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 16, 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.