Atherion Management Services

Engineering & Project Management and Technical Training

Consultants to the international energy industry specilaising in oil & gas and renewable technologies.

Image by Zachary Theodore
Sustainable Energy

About us

Atherion Management Services is a  dynamic company specialising in the management of oil & gas projects and renewable energy projects.

We have wide ranging technical expertise in materials engineering, rigid and flexible pipelines, risers, umbilicals and subsea infrastructure such as trees and manifolds.

We are able to provide a wide range of engineering support from conceptual field developments through to project execution and construction support.

We have international project management experience including the North Sea, the Mediterranean, the Black Sea, North & South America, South East Asia and West Africa.



Your Strategic Partner


Engineering & Project Management

The Path to Success

Our services are customized to meet the specific needs of each client. We work collaboratively throughout the entire process to acheive successful outcomes. In addition to engineering, we can also offer owner’s engineer and field development planning services to Operators. Contact us to find out how we can help you.

Technical Training

Specialist Courses

We can provide training courses lasting from one to four days, covering engineering and project management. Benefit from one of our existing courses our have us design a bespoke training course specific to your needs. Contact us to find out more.



Some of our most recent projects


Subsea Engineering Manager

Tullow Oil Ghana

TEN and Jubilee Fields

Development Engineering Manager

OMV Petrom

Neptun Deep Project


SURF Design Manager


Fenja Project



Our most popular courses

Project Management

Management of Oil & Gas Projects

Front End Loading

Field Development

Concept Selection Methodology

Field Development Basics

Subsea & Pipelines

Offshore Pipeline Engineering

Subsea Engineering

Risk & Economics

Strategic Decision Making

Project Risk Management

Oil & Gas Economics

Renewable Technologies

Offshore Wind Technology

Geothermal Engineering

Solar PV Design

Energy Transition

Introduction to Energy Transition

Carbon Capture & Storage

Sustainable Energy


Where we work

We provide services worldwide


Testimonials from our Clients

What's Being Said


Atherion provided engineering management and acted as the technical interface between our team and BG's project management team during conceptual and FEED engineering of a subsea tie-back offshore Trinidad. The project team consisted of two engineering companies and a number of independent contractors filling project controls and contract administration roles. Atherion's leadership kept this diverse, multi-cultural team focused on generating a "Fit for Purpose" technical solution that met the business units commercial goals.

Project Manager, JP Kenny


Atherion worked tirelessly for us on a major North Sea oil & gas project. They worked on the design of the export pipeline system, supervised the line pipe supplier, then went offshore with the project for the installation opeation. During this time, they did a tremendous job to ensure the quality of the pipeline system. I was very, very pleased with the dedication and work quality.

Project Manager, Kvaerner Oil & Gas


I have known Dem for over 15 years and have worked for him as a contracted subsea engineer when he worked for British Gas and he has worked for me on a concept study on a HPHT subsea developement for the North Sea. I have no hesitation in recommending Atherion for work especially in the field of pipeline engineering.

Senior Field Development Engineer, FMC Technologies

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