Company lists · Data refreshed September 2026

Top 25 Oil and gas inspection services based in Nigeria

Name: Oil and gas inspection services based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 352 companies tracked

RevenueBase identified 352 oil and gas inspection services headquartered in Nigeria as of September 2026 and tracks 4,819 professional contacts across them, including 333 with verified work emails. Port Harcourt is the largest hub.

This list covers oil and gas inspection services 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

352Companies

4,819Contacts tracked

333Verified emails

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The 25 largest oil and gas inspection services based in Nigeria

Ranked by team size

Top 25 of 352 oil and gas inspection services 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 and gas inspection services: 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	JC International	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 17, 2026	51-200	228 contacts →
	Strong evidence “JC International is an ISO 9001:2015 certified company that provides Inspection, Training and Rope Access services to the Oil and Gas, Marine and Construction Industry throughout…” Source: RevenueBase Database · checked Sep 17, 2026
2	Engineering Automation Technology Limited	Indirect evidence	Eket, NigeriaHQ checked Sep 17, 2026	201-500	177 contacts →
	Indirect evidence “Engineering Automation Technology Limited is an indigenous Technological Engineering Company Incorporated on the 9th of November, 2007 under the laws of the Federal Republic of…” Source: RevenueBase Database · checked Sep 17, 2026
3	Bell OIL & GAS	Strong evidence	Lagos, NigeriaHQ checked Sep 17, 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 17, 2026
4	Jimcol Resources Nigeria Limited	Indirect evidence	Portharcourt, NigeriaHQ checked Sep 17, 2026	51-200	119 contacts →
	Indirect evidence “Jimcol Resources Nigeria Limited is an indigenous company incorporated in 1990.” Source: RevenueBase Database · checked Sep 17, 2026
5	Emval Nigeria Limited	Strong evidence	Lekki, NigeriaHQ checked Sep 17, 2026	51-200	109 contacts →
	Strong evidence “The Company Emval Nigeria Limited is a servicing company that provides onshore and offshore technical services to the Oil & Gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
6	PFL Engineering Services Limited	Indirect evidence	Lekki, NigeriaHQ checked Sep 17, 2026	501-1,000	90 contacts →
	Indirect evidence “PFL Engineering Services Limited (PFL) is an indigenous company established in 2002.” Source: RevenueBase Database · checked Sep 17, 2026
7	Petrostuff Nigeria Limited	Indirect evidence	Lagos., NigeriaHQ checked Sep 17, 2026	201-500	75 contacts →
	Indirect evidence “Petrostuff Nigeria Limited is a 100% Nigerian company established in 1998.” Source: RevenueBase Database · checked Sep 17, 2026
8	Westend Diamond Energy Limited	Partial evidence	Port Harcourt, NigeriaHQ checked Sep 17, 2026	201-500	75 contacts →
	Partial evidence “As a survey assessment, consulting and inspection company, WEDNL conducts itself on the basis of Workability, Efficiency and Dynamism in providing quality assessment and…” Source: RevenueBase Database · checked Sep 17, 2026
9	Aviam Offshore Engineering Company Limited	Partial evidence	Lagos, NigeriaHQ checked Sep 17, 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 17, 2026
10	Elper Oilfield Engineering	Indirect evidence	Lagos, NigeriaHQ checked Sep 17, 2026	501-1,000	70 contacts →
	Indirect evidence “ELPER has built in time, a strong international network, and a specialized engineering company, providing services ranging from Engineering Procurement & Construction to Marine…” Source: RevenueBase Database · checked Sep 17, 2026
11	Thompson & Grace Investments Limited	Strong evidence	Port-harcourt, NigeriaHQ checked Sep 17, 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 17, 2026
12	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
13	Arco Integrity Solutions Limited	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 17, 2026	51-200	58 contacts →
	Strong evidence “Arco Integrity Solutions Limited (AISL) has been in the oil, gas and energy industry since 2003.” Source: RevenueBase Database · checked Sep 17, 2026
14	Sellafield Energy	Strong evidence	Lekki, NigeriaHQ checked Sep 17, 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 17, 2026
15	PEM Offshore Group	Strong evidence	Port-harcourt, NigeriaHQ checked Sep 17, 2026	11-50	52 contacts →
	Strong evidence “PEM Offshore offers a wide range of products and services aimed at improving safety, quality and reliability in the marine, oil and gas sector.” Source: RevenueBase Database · checked Sep 17, 2026
16	OIL Quest International Limited	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 17, 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 17, 2026
17	Ashbard Energy Company Limited	Indirect evidence	Port - Harcourt, NigeriaHQ checked Sep 17, 2026	201-500	49 contacts →
	Indirect evidence “Incorporated in 2004, Ashbard Energy Company Limited is an indigenous engineering services provider.” Source: RevenueBase Database · checked Sep 17, 2026
18	GCA Energy Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 17, 2026	11-50	46 contacts →
	Indirect evidence “GCA Energy Limited was registered in the late eighties as Greg Continental Agency Limited and acted as an Agency Company to Siemens Building Technologies UK Limited providing…” Source: RevenueBase Database · checked Sep 17, 2026
19	NEW Energy Services Company Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 17, 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 17, 2026
20	True-Blue Energy Services Limited	Strong evidence	Port Harcourt, NigeriaHQ checked Sep 17, 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 17, 2026
21	Alphaden Energy & Oilfield Limited	Indirect evidence	Victoria Island, NigeriaHQ checked Sep 17, 2026	51-200	35 contacts →
	Indirect 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 17, 2026
22	TAG Energy Limited	Strong evidence	Lekki, NigeriaHQ checked Sep 17, 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 17, 2026
23	Funtay Group	Strong evidence	Lagos, NigeriaHQ checked Sep 17, 2026	51-200	30 contacts →
	Strong evidence “Funtay Group is a Nigerian Oil and Gas company involved in the entire value chain of the Oil & Gas industry, from Upstream to Downstream to Gas and Power.” Source: RevenueBase Database · checked Sep 17, 2026
24	Deepwater Engineering Limited DEL	Partial evidence	Warri, NigeriaHQ checked Sep 17, 2026	11-50	29 contacts →
	Partial 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 17, 2026
25	ENG Rypac Limited	Indirect evidence	Rivers State, NigeriaHQ checked Sep 17, 2026	51-200	26 contacts →
	Indirect evidence 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 and gas inspection services. 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 inspection services.
Partial evidence: Its own public description names part of oil and gas inspection services, 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 inspection services. 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 352 oil and gas inspection services based in Nigeria

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Oil and gas inspection services based in Nigeria at a glance

As of Sep 17, 2026

6.9%Verified-email coverage

13.7Average contacts per company

11-50Median size (employees)

33.5%Largest-city concentration · Port Harcourt

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

161

51-200

201-500

501-1,000

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 352 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 inspection services, 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 inspection services”. 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 inspection services), 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 inspection services, 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, 333 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 and gas inspection services by metro

Oil and gas inspection services in Port Harcourt118
Oil and gas inspection services in Lagos60

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 inspection services, 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 inspection services are there based in Nigeria?

RevenueBase identified 352 oil and gas inspection services 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?

JC International, headquartered in Nigeria, tops this list with the largest team on record.

Which city has the most oil and gas inspection services?

Port Harcourt leads with 118 headquartered companies, followed by Lagos (60) and Lagos State (23).

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 333 verified decision-maker contacts tracked across these 352 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.

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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.