Modifications & maintenance

To keep mature fields pumping in times of dwindling reservoirs and to keep infrastructure in shape, modifications and brownfield engineering are necessary, everyday aspects of the petroleum industry. Brownfield engineering ranges from system upgrades and debottlenecking to integrity management and lifetime extension.

Modification and maintenance


Nigel Blackbeard

Nigel Blackbeard

Business Development Director, Middle East
T: +974 66766478

Experts on modifications and lifetime extension

Ramboll carries out a variety of brownfield modification projects on-shore as well as offshore, ranging from minor modifications to complete revamps. Our system upgrades and debottlenecking projects optimise production, while our reassessments ensure structural integrity and enable lifetime extension.

We have a strong focus on keeping shutdown time to a minimum and all refurbishment work on schedule, which is why we offer precision 3D laser scanning & survey as a basis for all our modification projects.

Our services within modifications cover:


Ramboll offers a wide-ranging portfolio of services related to maintenance projects both onshore and offshore. Our service palette ranges from strategic to practical maintenance issues. We are specialised in the preparation of maintenance procedures and the planning of preventive maintenance on oil and gas facilities; including maintenance systems for electrical, mechanical and rotating equipment.

Our services within maintenance cover:

  • Reliability Centred Maintenance (RCM)
  • FMECA procedures
  • Availability analysis and RAM programmes
  • LCC & LCP (Life Cycle Costs & Life Cycle Profit)
  • KIT system - spare parts solution for rotating equipment
  • Ramboll Smart Inspection – inspection tool to register readings on equipment

Technical documentation

With modifications and brownfield engineering taking place continuously during the entire lifetime of a facility, up-to-date technical documentation is essential.

Ramboll provides a time-saving and efficient technical documentation service for our clients. In our daily work, our updates range from single documents and drawings to entire projects with more than 1000 drawings.


Al Shaheen platform. Photo courtesy of Maersk Oil

Rectification of GRE piping systems at Al Shaheen

Maersk Oil Qatar operates the Al Shaheen field located 180 kilometres off the North East coast of Qatar in the Arabian Gulf. First oil was produced in 1994, and since then the field has undergone tremendous development with modification works and new designs still taking place on a continuous basis.

South Arne platform

South Arne Phase III - Tie-in of two additional wellhead platforms

In 2010, Hess decided to expand their activities on the South Arne field with two additional wellhead platforms as part of the Phase III Development. Hess, Semco Maritime and Ramboll formed an EPC alliance to carry out brownfield work related to the project.

The Maersk operated Tyra East platform in the Danish North Sea. Photo courtsey of Maersk Oil

Tyra East Rationalisation Project

The Tyra Field is the largest gas field in the Danish North Sea sector – it is operated by Maersk Oil, and has been producing since 1984. Ramboll has been part of the Tyra East Rationalisation Project; just one phase in a series of Optimisation Projects in the field.

We have recently completed one of our most extensive projects to date for Maersk Oil Qatar on the offshore field development project called Al Shaheen.

Amazing Al Shaheen

Al Shaheen is a production oil and gas field off the North East coast of Qatar in the Arabian Gulf. The oil field lies over the North Gas Field; the largest gas field in the world. Al Shaheen has been developed by Maersk Oil in what constitutes one of the largest and most complex offshore oil and gas projects undertaken in the world today.

LNG vessel

Upgrade of LNG berth at Ras Laffan in Qatar

Ras Laffan is the centre of LNG and GTL activities in Qatar and the port is considered one of the largest LNG export facilities in the world.

Ramboll Oil & Gas undertook the detailed engineering for an upgrade of the LNG berth at Ras Laffan during 2009 and 2010.

Cutting carbon footprints - flare gas recovery on South Arne

Hydrocarbon emissions from platforms and refineries are a source of atmospheric pollution, and there is a strong drive in the industry to find environment-friendly solutions. Ramboll Oil & Gas has considerable experience in this field, and recently we completed the design of a flare gas recovery system for the North Sea platform, South Arne operated by Hess Denmark.

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First Floor, Emerald Building
Oud Metha Road
PO Box 116921, Dubai, UAE
Tel:+971 4 334 3616
Fax:+971 4 334 3617


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