Offshore Structures

Scope and Content

Peter Rowe worked on a number of projects and proposals for offshore structures. The majority related to oil and gas production platforms in the UK sector of the North Sea. He worked on the foundations of several large platforms in the North Sea, in the Beryl, Brae, Brent, Ekofisk, Forties, Frigg, Magnus, Ninian, Piper and Thistle fields, and the TLP (Tension Leg Platform) in the Hutton Field. He also advised on platforms in the Phillips Cod, Troll and Ula fields of the Norwegian sector. Other offshore locations include the Arctic Ocean, Alaska (the St George Basin C.O.S.T. Well on the Bering Sea continental shelf), the Bahamas, Brazil, and Hawaii (Maui Field).

From 1972 onwards Rowe conducted research into the performance of offshore oil production platforms when subjected to cyclic loading due to major waves (30 m high) and to cyclic loading from ice fields. This work had been made possible by using the unique 700 g-tonne centrifuge which Rowe had developed for geotechnical applications at the Simon Engineering Laboratories at the University of Manchester from 1969.

Among the offshore structure foundations that were subjected to this centrifuge testing were those for the Brae and Brent Fields, and the Hutton Tension Leg Platform in the UK sector of the North Sea; for the Garoupa Field off the coast of Brazil; the Troll Field off the coast of Norway; and the Condeep T-300 structure on the Norwegian continental shelf.

Additionally, the performance of mobile caissons in the Arctic Ocean was subjected to this same centrifuge model testing. Other caisson material is found in items relating to the Forties Field (Ekofisk oil storage caisson), Camilla Caisson (including some in Italian), and Phillips Cod Field (Norwegian Sector of the North Sea).

Related Material

For further information on the use of the centrifuge at the University of Manchester to test offshore structures, see PWR/5/5.