Company lists · Data refreshed September 2026

Top 25 Oil and gas IT services based in Port Harcourt, Nigeria

RevenueBase identified 364 company matches for oil and gas IT services associated with Port Harcourt, Nigeria as of September 2026 and tracks 5,071 professional contacts across them, including 519 with verified work emails. Across Nigeria, Port Harcourt is the largest hub for this category.

This list covers company matches for oil and gas IT services associated with Port Harcourt, Nigeria, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built
364Companies
5,071Contacts tracked
519Verified emails
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The 25 largest oil and gas IT services based in Port Harcourt, Nigeria

Ranked by team size
Top 25 of 364 company matches for oil and gas IT services based in Port Harcourt, Nigeria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 20261,001-5,000481 contacts →

Exact match

“AOS Orwell Limited is the largest indigenous Oilfield Services Company in Nigeria.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 2026501-1,000394 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 2026501-1,000315 contacts →

Exact match

“Dover Engineering Limited is a reputable Engineering Design,EPC, Operations & Maintenance Company.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20086 contacts →

Exact match

“Hydroserve Group is a leading oil and gas company which started as Hydroserve Oil Services Nigeria Limited in November, We began operations in with Pipeline & Process, and Pumping…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 2026201-50066 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202611-5057 contacts →

Exact match

“PEGIS GLOBAL Services Limited (PGSL) is a fast growing indigenous company with operational base in Port Harcourt, focused on providing services in the Oil and gas Industry in the…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 2026201-50055 contacts →

Exact match

“BRIDGSITE NIGERIA LIMITED (BNL) is an indigenous Engineering and Construction Services Company engaged in the provision of solution oriented, cost effective and responsive high…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 2026201-50050 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20047 contacts →

Exact match

“Power and Energy Oil Tools Ltd is a Nigerian well engineering company.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20040 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 2026201-50040 contacts →

Exact match

“Oil Marketing & Retail, Haulage & Logistics, Marine Services, Ultramodern Tank Farm/Depot Equipment Sales & Leasing”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20038 contacts →

Exact match

“Hamilton Technologies Limited is the largest indigenous, new generation drilling fluids company in Nigeria providing solutions in; Mud Engineering/Drilling Support Services…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202611-5038 contacts →

Exact match

“Dovewell Oilfield Services Limited is a fully Nigerian owned oil and gas service company.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20035 contacts →

Exact match

“Felton Energy Services Ltd (FESL) is an indigenous oil & gas procurement, operation and maintenance company in Nigeria.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20031 contacts →

Exact match

“Bill Energy Services Limited is an indigenous company providing services in the Oil and Gas sector, FMCG, Project Management, Safety consultancy and other sectors of the Nigerian…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20029 contacts →

Exact match

“Solewant Group, established in the year is a dedicated industry leader with operational plant/facilities at Alode-Eleme, Onne, Rivers State, Nigeria.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20029 contacts →

Exact match

“Registered in 2020 and commenced business operations in October 2022, Waal Energy Services Limited is a full-spectrum technical solutions company focused on delivering end-to-end…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20028 contacts →

Exact match

“Weam and Company Limited, established in 1985, is an ISO 9001:2015 and COREN certified multidisciplinary engineering services company, providing a diverse range of client-focused…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202611-5024 contacts →

Exact match

“Oil & Gas Services company”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202611-5022 contacts →

Exact match

“Union Energy Services Limited is a well established and wholly owned Nigerian company providing Energy and Engineering Services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20020 contacts →

Exact match

“Nymagx Energy Services a wholly Nigerian owned company incorporated to provide innovative solutions for Well Services, Process, Pipeline Construction, Facilities…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202611-5019 contacts →

Exact match

“The Company was incorporated in 2005 with its base in Port Harcourt, Nigeria.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202651-20018 contacts →

Exact match

“Catobi Nigeria Enterprises Limited is a leading industrial services company providing end-to-end solutions across the oil & gas and industrial sectors.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202611-5017 contacts →

Exact match

“Atma Global Resources Limited is a wholly Nigerian Engineering Procurement, Installation, Maintenance, and Commissioning Company created for the purpose of providing services to…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchPort Harcourt, NigeriaHQ recorded Sep 21, 202611-5017 contacts →

Exact match

“Goddie Chemicals International Limited is an indigenous stockist and supplier of drilling, production and completion chemicals, laboratory services and equipment for more than two…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 364 oil and gas IT services based in Port Harcourt, Nigeria

See the full list, filter by size, metro and specialty, and access 519 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas IT services based in Port Harcourt, Nigeria at a glance

As of Sep 21, 2026
10.2%Verified-email coverage
13.9Average contacts per company
11-50Median size (employees)
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
90
11-50
155
51-200
82
201-500
22
501-1,000
7
1,001-5,000
3
10001+
1

Email recency for this list is measured across the whole Nigeria list rather than for Port Harcourt, so it is reported there. Company counts and contact totals on this page are exact for Port Harcourt, over 364 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Port Harcourt, Nigeria whose business descriptions match “oil and gas IT services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 519 professional contacts with verified work emails across the full matched dataset. 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 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Oil and gas IT services by metro in Nigeria

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “oil and gas IT services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas IT services are there based in Port Harcourt, Nigeria?

RevenueBase identified 364 company matches for oil and gas IT services associated with Port Harcourt, Nigeria as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

AOS Orwell Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in Nigeria has the most oil and gas IT services?

Port Harcourt leads Nigeria with 364 company records, followed by Lagos (336) and Lagos State (120).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 519 professional contacts with verified work emails tracked across these 364 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 364 oil and gas IT services based in Port Harcourt, Nigeria. Start with a free account, no credit card.

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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 SmartSearch, 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.