1. Introduction

An unmanned wellhead platform (UWHP) is a development concept under consideration in severallicenses on the Norwegian shelf. The main driver is to identify a cost- and production-efficientsolution offering similar functionality and robustness as a subsea development.

Historically, UWHPs have been designed in different variations; from simple dry wellheadinstallations to more advanced installations with processing equipment, shelter and helicopterdeck etc. The installations are accessed via helicopter, boat or walk-to-work (W2W) bridges.

In the light of the increasing interest in unmanned installations for field development on theNorwegian continental shelf, the Norwegian Petroleum directorate wishes to gain anunderstanding of the various conceptual UWHP solutions. From a governmental point of view, it isconsidered important to gather knowledge about the opportunities as well as the limitations,including the potential risks related with such development solutions.

This summary report includes résumés and conclusions of the main topics within:

  • Different types of unmanned platforms and the location of these platforms
  • The norms, codes and standards used in- and outside Norway
  • Experience as well as operation & maintenance philosophies
  • Generic design data for unmanned platforms

Further details are described in the sub-reports, ref. /5/, /6/, /7/, /8/, /9/ and /10/.