Renowned North Sea geologist Richard Hardman looks back at the 1975 discovery of the billion barrel Valhall Field.
Vol. 6, No. 5
The very first discovery on the Norwegian continental shelf was made in 1966 by Esso Exploration Norway Inc. Well 25/11-1 found small amounts oil in Lower Tertiary sandstones on the Utsira High. This was the second well offshore Norway.
The Valhall permanent seismic array (Life of Field Seismic; LoFS) has successfully provided easy access to high quality 4D images for the purpose of improving oil recovery.
Iguaçu Falls is one of the most spectacular natural sceneries in the world, caused by a wide-spread volcanic event in conjunction with continental rifting in the Early Cretaceous. This rifting episode has also meant a lot to the hydrocarbon potential on both sides of the Atlantic Ocean.
4D geophysics, in particular 4D seismic, has come of age. Repeated surveys with or without permanent receivers are now increasingly being used in monitoring production. This applies in particular to clastic reservoirs, meaning that one of the future challenges will be to make the technology also work for carbonates. Professor Dr. Martin Landrø now takes our questions.
Giant discoveries in the pre-salt play are expected to boost Brazil's production to almost 6MMbopd within 10 years.
Building on ongoing IOR research efforts, StatoilHydro aims to be a leading company in quantitative integration of 4D data in reservoir modelling in order to meet challenges in the most complex reservoirs.
Large-scale volcanism caused by a superplume in the mantle was possibly responsible for wide-spread deposition of excellent source rocks in Mid-Cretaceous times.
Recent news of at least three dry wells and suspension of the Tupi extended well test illustrate some of the challenges facing the pre-salt play that Brazil's government has touted as having "no exploration risk." However, with the huge reserves already discovered, the frontier area remains a hot play.
ION's BasinSPANTM regional 2D programs feature surveys designed for the purpose of imaging the full crustal architecture. Their BrasilSPAN program is showing never before imaged sub-salt horizons and new stratigraphic and structural details of this frontier petroleum system.