Company lists · Data refreshed September 2026

Top 15 Well logging service companies based in Nigeria

RevenueBase identified 87 well logging service companies headquartered in Nigeria as of September 2026 and tracks 1,439 professional contacts across them, including 200 with verified work emails. Port Harcourt is the largest hub.

This list covers well logging service 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 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
87Companies
1,439Contacts tracked
200Verified emails
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The 15 largest well logging service companies based in Nigeria

Ranked by team size
Top 15 of 87 well logging service companies 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 well logging service 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceVictoria Island, NigeriaHQ checked Sep 16, 2026201-500356 contacts →

Indirect evidence

“Geoplex Drillteq Limited is the fastest-growing indigenous service provider in Sub-Saharan Africa, proudly holding the API Q2 certification, a testament to our commitment to…”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceLekki, NigeriaHQ checked Sep 16, 202651-200109 contacts →

Indirect 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 16, 2026
3Indirect evidencePort Harcourt, NigeriaHQ checked Sep 16, 2026201-50050 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
4Indirect evidenceLekki Phase 1, NigeriaHQ checked Sep 16, 202651-20036 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidencePort Harcourt, NigeriaHQ checked Sep 16, 202611-5024 contacts →

Indirect evidence

“Oil & Gas Services company”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceLagos, NigeriaHQ checked Sep 16, 202611-5023 contacts →

Indirect evidence

“Starfix Geosolutions Services Limited is an Oil and Gas service company that leverages Expertise, Knowledge, and Technology to provide safe and innovative solutions to challenges…”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidencePort Harcourt, NigeriaHQ checked Sep 16, 202611-5023 contacts →

Indirect 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
8Indirect evidenceLekki Phase-1, NigeriaHQ checked Sep 16, 202611-5023 contacts →

Indirect evidence

“Verity Geosolutions is a Nigerian-focused integrated geophysical solutions provider to hydrocarbon exploration and production companies.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceLagos, NigeriaHQ checked Sep 16, 202611-5017 contacts →

Indirect evidence

“Harvex Geosolutions Limited is a privately-owned company, operating in the Exploration & Production (E&P) services sector to provide niche and/or cutting-edge seismic…”

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidenceWarri, NigeriaHQ checked Sep 16, 202651-20012 contacts →

Indirect evidence

“September 1996 with Registration Number RC: 299,435 and in Ghana in March 2010 (Ghana Registration Number CA-72,713), but since its start-up of active operations as a private…”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidencePort Harcourt, NigeriaHQ checked Sep 16, 202611-504 contacts →

Indirect evidence

“Wedcon Petroleum was incorporated as a limited liability company in 1979.”

Source: RevenueBase Database · checked Sep 16, 2026
12Partial evidenceLagos, NigeriaHQ checked Sep 16, 202611-503 contacts →

Partial evidence

“DAQC Field and Well Services Ltd is one of the leading directional survey companies in Nigeria.”

Source: RevenueBase Database · checked Sep 16, 2026
13Indirect evidenceLagos, NigeriaHQ checked Sep 16, 20261-103 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
14Indirect evidenceAjah, NigeriaHQ checked Sep 16, 202611-502 contacts →

Indirect evidence

“Verigen Energy Solutions Nigeria Ltd.(VES) is an indigenous, privately owned oil and gas technical consultancy company founded in 2014 to provide reservoir studies, full field…”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidencePort Harcourt, NigeriaHQ checked Sep 16, 202611-502 contacts →

Indirect evidence

“We are an indigenous company providing Geoscience and petroleum engineering services, and specialized staff training support to the oil and Gas industry.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 15 of 87 well logging service companies based in Nigeria

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Well logging service companies based in Nigeria at a glance

As of Sep 16, 2026
13.9%Verified-email coverage
16.5Average contacts per company
11-50Median size (employees)
31.0%Largest-city concentration · Port Harcourt
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
11
11-50
47
51-200
25
201-500
3
10001+
1

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 87 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 well logging service 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 “well logging service 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 well logging service 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 well logging service 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, 200 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.

Well logging service companies by metro

  • Well logging service companies in Port Harcourt27

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 well logging service 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 well logging service companies are there based in Nigeria?

RevenueBase identified 87 well logging service 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?

Geoplex Drillteq Limited, headquartered in Lagos State, tops this list with the largest team on record.

Which city has the most well logging service companies?

Port Harcourt leads with 27 headquartered companies, followed by Lagos (11) and Lagos State (4).

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 200 verified decision-maker contacts tracked across these 87 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.