Company lists · Data refreshed September 2026

Top 25 Oil and gas field machinery installation companies based in Nigeria

Name: Oil and gas field machinery installation companies based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 261 companies tracked

RevenueBase identified 261 oil and gas field machinery installation companies headquartered in Nigeria as of September 2026 and tracks 3,894 professional contacts across them, including 353 with verified work emails. Port Harcourt is the largest hub.

This list covers oil and gas field machinery installation 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 15, 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 15, 2026 86% judged on-target in blind review

261Companies

3,894Contacts tracked

353Verified emails

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The 25 largest oil and gas field machinery installation companies based in Nigeria

Ranked by team size

Top 25 of 261 oil and gas field machinery installation companies based in Nigeria, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas field machinery installation 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	AOS Orwell Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	1,001-5,000	481 contacts →
	Indirect evidence “AOS Orwell Limited is the largest indigenous Oilfield Services Company in Nigeria.” Source: RevenueBase Database · checked Sep 15, 2026
2	Bell OIL & GAS	Strong evidence	Lagos, NigeriaHQ checked Sep 15, 2026	51-200	129 contacts →
	Strong evidence “Bell Oil & Gas has grown rapidly to become a leading indigenous oil service company in Nigeria.” Source: RevenueBase Database · checked Sep 15, 2026
3	Prime Sources Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 15, 2026	201-500	119 contacts →
	Indirect evidence “Prime Sources Limited a Nigerian company established in 2001 as an EPIC company has kept the flag of quality services flying high and is a one stop shop company safely offering…” Source: RevenueBase Database · checked Sep 15, 2026
4	LEE Engineering And Construction Company LTD	Indirect evidence	Ikoyi, NigeriaHQ checked Sep 15, 2026	501-1,000	114 contacts →
	Indirect evidence “Lee Engineering and Construction Co.” Source: RevenueBase Database · checked Sep 15, 2026
5	Aviam Offshore Engineering Company Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 15, 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 15, 2026
6	Thompson & Grace Investments Limited	Strong evidence	Port-harcourt, NigeriaHQ checked Sep 15, 2026	201-500	67 contacts →
	Strong evidence “Thompson & Grace Investment Limited (TGIL) an Engineering/ Oilfield Service company in Nigeria provides services to the Engineering Sector/Oil and Gas industry.” Source: RevenueBase Database · checked Sep 15, 2026
7	Vagan OIL And GAS Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	201-500	66 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026
8	Sellafield Energy	Strong evidence	Lekki, NigeriaHQ checked Sep 15, 2026	11-50	56 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026
9	Cakasa Maintenance Services Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	51-200	52 contacts →
	Partial evidence “Cakasa Maintenance Services Limited is a global oil servicing company in Nigeria, with Head Office in PortHarcourt.” Source: RevenueBase Database · checked Sep 15, 2026
10	OIL Quest International Limited	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	201-500	50 contacts →
	Strong 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 15, 2026
11	Hexagon Engineering LTD	Indirect evidence	Lagos, NigeriaHQ checked Sep 15, 2026	11-50	46 contacts →
	Indirect evidence “HEXAGON ENGINEERING LTD is a systems integration company with registered offices in Lagos, Portharcourt and Houston - Texas.” Source: RevenueBase Database · checked Sep 15, 2026
12	Melcurt Limited	Indirect evidence	Osubi-warri, NigeriaHQ checked Sep 15, 2026	201-500	45 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026
13	NEW Energy Services Company Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 15, 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 15, 2026
14	Fedoz Nigeria Limited	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	201-500	41 contacts →
	Strong evidence “Fedoz Nigeria Limited (FNL) is a wholly indigenous oil and gas services company specializing in Engineering, Procurement, Construction, Installation, and Maintenance (EPCIM).” Source: RevenueBase Database · checked Sep 15, 2026
15	True-Blue Energy Services Limited	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	51-200	40 contacts →
	Strong evidence “True-Blue Energy Services Limited, a fully indigenous oil and gas services company in Nigeria with proven capacity for supporting clients/major projects in Onshore and Offshore…” Source: RevenueBase Database · checked Sep 15, 2026
16	Alphaden Energy & Oilfield Limited	Partial evidence	Victoria Island, NigeriaHQ checked Sep 15, 2026	51-200	35 contacts →
	Partial evidence “The ‘ALPHA’S DEN’ is a hub of professional and well experienced Alpha’s, championing their fields while collectively making up a provider of fit-for-purpose services to clients…” Source: RevenueBase Database · checked Sep 15, 2026
17	TAG Energy Limited	Strong evidence	Lekki, NigeriaHQ checked Sep 15, 2026	11-50	33 contacts →
	Strong evidence “TAG Energy is an integrated service company offering a comprehensive range of oilfield products and support services in the Nigerian Oil and Gas Industry.” Source: RevenueBase Database · checked Sep 15, 2026
18	Debyl Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	11-50	32 contacts →
	Indirect evidence “DEBYL LIMITED is an indigenous company.” Source: RevenueBase Database · checked Sep 15, 2026
19	Kurus Nigeria Limited	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	51-200	27 contacts →
	Strong evidence “KURUS NIGERIA LIMITED, fully indigenous but world class, is committed to delivering qualitative, efficient and cost effective Technical solution to the Oil/Gas and energy…” Source: RevenueBase Database · checked Sep 15, 2026
20	Supasteel Limited	Partial evidence	Kaduna, NigeriaHQ checked Sep 15, 2026	201-500	25 contacts →
	Partial evidence “Supasteel Limited is a wholly indigenously owned Engineering Procurement and construction Company carrying out Fabrication, Installation, Repair of Static and Rotating Equipment…” Source: RevenueBase Database · checked Sep 15, 2026
21	Matpatson Petroleum Services Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	201-500	22 contacts →
	Indirect evidence “Matpatson Petroleum Services is your One-Stop-Shop for Oilfield Services and Solutions with Qualified Manpower and Expertise” Source: RevenueBase Database · checked Sep 15, 2026
22	Bicens Resources Limited	Strong evidence	Warri, NigeriaHQ checked Sep 15, 2026	501-1,000	22 contacts →
	Strong 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 15, 2026
23	Twab Nigeria Limited	Strong evidence	Sagamu Inter-change Kajola Village, NigeriaHQ checked Sep 15, 2026	201-500	18 contacts →
	Strong evidence “TWAB Nigeria Limited is an indigenous Oil and Gas Engineering / Construction (Pipeline & Facilities) service company.” Source: RevenueBase Database · checked Sep 15, 2026
24	Atma Global Resources Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 15, 2026	11-50	17 contacts →
	Partial evidence “Atma Global Resources Limited is a wholly Nigerian Engineering Procurement, Installation, Maintenance, and Commissioning Company created for the purpose of providing services to…” Source: RevenueBase Database · checked Sep 15, 2026
25	Seflam SGL	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 15, 2026	201-500	16 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 15, 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: oil and gas field machinery installation 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 oil and gas field machinery installation companies.
Partial evidence: Its own public description names part of oil and gas field machinery installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas field machinery installation 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 25 of 261 oil and gas field machinery installation companies based in Nigeria

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Oil and gas field machinery installation companies based in Nigeria at a glance

As of Sep 15, 2026

9.1%Verified-email coverage

14.9Average contacts per company

11-50Median size (employees)

35.6%Largest-city concentration · Port Harcourt

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

11-50

108

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 261 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 oil and gas field machinery installation 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 “oil and gas field machinery installation 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 oil and gas field machinery installation 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 oil and gas field machinery installation 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, 353 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 15, 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.

Oil and gas field machinery installation companies by metro

Oil and gas field machinery installation companies in Port Harcourt93
Oil and gas field machinery installation companies in Lagos38

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 oil and gas field machinery installation 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 oil and gas field machinery installation companies are there based in Nigeria?

RevenueBase identified 261 oil and gas field machinery installation 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?

AOS Orwell Limited, headquartered in Port Harcourt, tops this list with the largest team on record.

Which city has the most oil and gas field machinery installation companies?

Port Harcourt leads with 93 headquartered companies, followed by Lagos (38) and Rivers (20).

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 353 verified decision-maker contacts tracked across these 261 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 15, 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.