Company lists · Data refreshed September 2026

Top 25 Oil rig fabrication companies based in Nigeria

Name: Oil rig fabrication companies based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 158 companies tracked

RevenueBase identified 158 oil rig fabrication companies headquartered in Nigeria as of September 2026 and tracks 3,442 professional contacts across them, including 369 with verified work emails. Port Harcourt is the largest hub.

This list covers oil rig fabrication 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 17, 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 17, 2026 86% judged on-target in blind review

158Companies

3,442Contacts tracked

369Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest oil rig fabrication companies based in Nigeria

Ranked by team size

Top 25 of 158 oil rig fabrication companies based in Nigeria, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil rig fabrication 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 17, 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 17, 2026
2	Aveon Offshore Limited	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 17, 2026	501-1,000	394 contacts →
	Strong evidence “Aveon Offshore Limited is an engineering and fabrication services company that has been providing construction and general fabrication services for the oil and gas industry since…” Source: RevenueBase Database · checked Sep 17, 2026
3	Kohasa Engineering Company Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 17, 2026	11-50	139 contacts →
	Partial evidence “Kohasa Engineering Company Limited is an oil and energy company based out of Plot 474, Trans Amadi industrial layout, Port Harcourt, RIVERS, Nigeria.” Source: RevenueBase Database · checked Sep 17, 2026
4	Depthwize	Indirect evidence	Lagos, NigeriaHQ checked Sep 17, 2026	201-500	102 contacts →
	Indirect evidence “Depthwize is a Nigerian Drilling Contractor with current assets in the swamp and shallow offshore drilling market.” Source: RevenueBase Database · checked Sep 17, 2026
5	Nivafer Engineering And Construction Limited	Strong evidence	Oke-shasha, NigeriaHQ checked Sep 17, 2026	201-500	94 contacts →
	Strong evidence “NIVAFER Engineering & Construction Limited is a steel fabrication and erection outfit offering unparalleled engineering & construction services to the Oil and Gas industry…” Source: RevenueBase Database · checked Sep 17, 2026
6	Natony Limited	Partial evidence	Warri, NigeriaHQ checked Sep 17, 2026	51-200	75 contacts →
	Partial evidence “NATONY LIMITED RC.105963 is a Nigerian Contracting Company Engaged in Civil, Mechanical Fabrications and Installation, Electrical and Instrumentation, Diving / Remote Operated…” Source: RevenueBase Database · checked Sep 17, 2026
7	Aviam Offshore Engineering Company Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 17, 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 17, 2026
8	Peso Energy Services	Partial evidence	Lekki Phase 1, NigeriaHQ checked Sep 17, 2026	201-500	72 contacts →
	Partial evidence “PESO Energy Services is a leader in the Oil and Gas services industry, specializing in Engineering Services, Early Production Facility Packages, Oil Field Services, Specialized…” Source: RevenueBase Database · checked Sep 17, 2026
9	Vagan OIL And GAS Limited	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 17, 2026	201-500	66 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
10	Cakasa Maintenance Services Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 17, 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 17, 2026
11	Nigerstar7 Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 17, 2026	51-200	48 contacts →
	Indirect evidence “With headquarters in Lagos, Nigeria, NigerStar7 is a company wholly owned by Subsea7.” Source: RevenueBase Database · checked Sep 17, 2026
12	Melcurt Limited	Indirect evidence	Osubi-warri, NigeriaHQ checked Sep 17, 2026	201-500	45 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
13	Enikkom Construction Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 17, 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 17, 2026
14	True-Blue Energy Services Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 17, 2026	51-200	40 contacts →
	Partial 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 17, 2026
15	ODENL	Indirect evidence	Lagos, NigeriaHQ checked Sep 17, 2026	201-500	36 contacts →
	Indirect 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 17, 2026
16	Gremoore Limited	Partial evidence	Lekki Phase 1, NigeriaHQ checked Sep 17, 2026	501-1,000	35 contacts →
	Partial evidence “Gremoore, established in 2013, is a 100% Nigerian company and a leading indigenous provider of offshore engineering, procurement, fabrication, installation associated with…” Source: RevenueBase Database · checked Sep 17, 2026
17	Bicens Resources Limited	Partial evidence	Warri, NigeriaHQ checked Sep 17, 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 17, 2026
18	Quest OIL And Engineering Services Limited	Partial evidence	Lagos, NigeriaHQ checked Sep 17, 2026	11-50	21 contacts →
	Partial evidence “Quest Oil and Engineering Services Limited is a value-driven company offering full-service in oil and gas, as well as engineering service.” Source: RevenueBase Database · checked Sep 17, 2026
19	Cozym Limited	Indirect evidence	Lekki Phase 1, NigeriaHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “Cozym Limited is a family of Engineers and Consultants with core competencies in the areas of Feasibility Studies, Front End and Detailed Engineering Designs, Materials…” Source: RevenueBase Database · checked Sep 17, 2026
20	B G Technical Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 17, 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 17, 2026
21	Doxa Int'l Engineering Services LTD	Indirect evidence	Port Harcourt, NigeriaHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Doxa Int’l Engineering Services Ltd is an engineering-based support services company bridging the gap between IOCs and OEMs.” Source: RevenueBase Database · checked Sep 17, 2026
22	Offshore Dimensions Limited	Indirect evidence	Lagos, NigeriaHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “Offshore Dimensions Limited is a Nigerian EPC company that is committed to building engineering and construction capabilities in Nigeria.” Source: RevenueBase Database · checked Sep 17, 2026
23	Derotech Offshore Services Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 17, 2026	51-200	8 contacts →
	Indirect 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 17, 2026
24	Aquadynamic Global Logistics LTD	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 17, 2026	51-200	8 contacts →
	Strong evidence “E&P Support Services Fabrication Marine & Logistics OCTG Services Pipeline Transport Rig Moves” Source: RevenueBase Database · checked Sep 17, 2026
25	Zeconia	Partial evidence	Victoria Island, NigeriaHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “Zeconia GIL is a world class servicing company that provides total Offshore and Onshore solutions across the entire Oil & Gas Industry.” Source: RevenueBase Database · checked Sep 17, 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 rig fabrication 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 rig fabrication companies.
Partial evidence: Its own public description names part of oil rig fabrication companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil rig fabrication 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 158 oil rig fabrication companies based in Nigeria

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 369 reachable decision-makers.

Free signup · no credit card

View the full list →

Oil rig fabrication companies based in Nigeria at a glance

As of Sep 17, 2026

10.7%Verified-email coverage

21.8Average contacts per company

11-50Median size (employees)

31.6%Largest-city concentration · Port Harcourt

Sep 17, 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 158 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 rig fabrication 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 rig fabrication 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 rig fabrication 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 rig fabrication 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, 369 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 17, 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 rig fabrication companies by metro

Oil rig fabrication companies in Port Harcourt50

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 rig fabrication 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 rig fabrication companies are there based in Nigeria?

RevenueBase identified 158 oil rig fabrication 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 rig fabrication companies?

Port Harcourt leads with 50 headquartered companies, followed by Lagos (20) and Rivers (16).

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 369 verified decision-maker contacts tracked across these 158 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 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 158 oil rig fabrication companies based in Nigeria. Start with a free account, no credit card.

Download this list →

Related lists

Oil rig fabrication companies by geography

Browse the directory

Browse: Companies home · All Nigeria lists · All Oil rig fabrication companies lists · New lists

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.