Minimum-facility platforms

Cost-efficient exploration of marginal fields is at the top of the agenda for many operators in the oil and gas industry. The cost-effective minimum-facility platform is a good alternative to the traditional wellhead platform or subsea installation. It is normally unmanned, and acts as a satellite with power, chemicals, utilities and controls being supplied by a host.

Minimum facility platforms

Contact

Jesper Thomsen

Jesper Thomsen

M.Sc., chemical eng., Director, Business Development, North Sea
T: +45 5161 2375
Dag A. Nilsen, Ramboll Oil & Gas

Dag A. Nilsen

Director, Business Development, Norway
T: +47 488 93 227

Lars Mogensen

Director, Business Development, Middle East
T: +974 5512 7157

Balaji Swaminathan

Director - Oil & Gas India
T: +91 44 4386 7000

Experts on minimum-facility platforms

The design of minimum-facility platforms is one of Ramboll’s core competencies.  Since the 1980s, we have designed a significant number of minimum-facility platforms for such diverse environments as the Gulf of Mexico, the Arabian Gulf and the North Sea
 
Our services within minimum-facility platforms cover:
  • Field development assistance from conceptual studies and FEED to detailed engineering
  • Design optimisation of steel-structures
  • Design optimisation of layout
  • Design of associated pipelines
  • Brownfield modifications to host platform
  • Assistance with third party/authority verification

A ‘necessities only’ philosophy

The philosophy behind Ramboll’s minimum-facility platform is to use simple and robust technology which requires a minimum of manual operation and maintenance. Key characteristics are:

  • Designed for remote control
  • Normally unmanned
  • Intelligent and simple layout – necessities only
  • Simple and reliable equipment solutions with low maintenance requirements
  • Replacement rather than repair
  • Reducing steel weight

Unmanned operation increases safety and reduces costs

By keeping the minimum-facility platform unmanned, we are reducing the risk to personnel while reducing costs. Robust equipment means fewer maintenance campaigns. This will keep OPEX down and also allow for alternative modes of access. Access via boat or telescopic gangway eliminates both costs and risks associated with helicopter access.

Minimalist topsides design with maximum return

All process facilities that are not required for transfer of well stream to the pipeline are eliminated. We call it the scaled-down topsides, characterised by:

  • A minimum of process and utility components
  • A minimum of hazardous material
  • Hand-held firefighting equipment and self-contained units
  • Remotely controlled control/F&G/ESD systems
  • A minimum of mechanical equipment requiring statutory periodic inspections/re-certification
  • Portable equipment stored on the support vessel

Optimised steel design reduces CAPEX

Applying advanced design and calculation tools, Ramboll is able to optimise the structural design and reduce steel volume while still adhering to all safety and regulatory requirements.

The result is a robust, low-weight, and easy-to-fabricate structure, which is easily installed at different water depths.

A ‘necessities only’ philosophy

The philosophy behind Ramboll’s minimum-facility platform is to use simple and robust technology which requires a minimum of manual operation and maintenance. Key characteristics are:
  • Designed for remote control
  • Normally unmanned
  • Intelligent and simple layout – necessities only
  • Simple and reliable equipment solutions with low maintenance requirements
  • Replacement rather than repair
  • Reducing steel weight



Projects

LEGO man on oil rig

Nini and Cecilie - Minimum-facility platforms for a marginal field

Ramboll has assisted DONG Energy with a development project for modification of the Siri field in the North Sea, where we designed two lightweight and robust minimum-facility platforms, Nini and Cecilie.The two unmanned wellhead platforms operate as satellites tied back to the mother platform, Siri, via three inter-field pipelines. The water depth is approximately 60 metres.

Unmanned wellhead platform

Unmanned wellhead platforms for Norwegian waters

The unmanned wellhead platform is a development concept under consideration for several licenses on the Norwegian continental shelf. Ramboll carried out a study for The Norwegian Petroleum Directorate pointing out pros and cons of the concept.

Johan Sverdrup

Working on one of the largest oil discoveries in Norwegian history

Statoil awarded Ramboll a feasibility study for their Johan Sverdrup field development project with the purpose of developing feasible concepts for minimum-facility platforms.

Mustang unmanned wellhead platform

Mustang - Unmanned wellhead platform for the Gulf of Mexico

BHP Billiton were extending their activities in the Gulf of Mexico, West Cameron area, a with an unmanned wellhead platform. Ramboll was awarded the design of this minimum-facility platform.

Oseberg platform

Oseberg field development - UWP concept study

Unmanned minimum-facility platforms are a cost-effective alternative to subsea production systems. Statoil contracted Ramboll to carry out a study on an unmanned wellhead platform (UWP) for their Oseberg field.

Unmanned wellhead platform, Tyra South East A

Tyra South East A - Design of unmanned wellhead platform for gas condensate field

As part of the Tyra field development in the Danish North Sea, operator, Maersk Oil, contracted Ramboll to assist with a number of engineering services for the design of the Tyra South East A platform. Tyra South East A came on stream in 2002.

Show more projects for this service

Ramboll Group A/S

Ramboll Group A/S
Hannemanns Allé 53
DK-2300 Copenhagen S
Denmark
Tel: +45 5161 1000
Fax +45 5161 1001

Mail: info@ramboll.com

Danish CVR numbers

Danish CVR numbers

Ramboll Group
10160669

Rambøll Danmark
35128417

Ramboll Energy
35128417

Rambøll Management Consulting
60997918

Ramboll Oil & Gas
35128417

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