Our Key People
Peder Solheim
MSc Geodesy, 1983.
After military services at Norwegian Defense Research Establishment Peder joined Geco where he was involved with R&D and navigation processing.
Later he joined Marest AS, an independent Norwegian service company, where he formed and was responsible for services towards the seismic industry.
In 1996 Peder founded Geograf AS, which later became Geograf Maritim, where he has held the positions of director and technical manager.
Reidar Balle
Mathematics and organizational studies University of Stavanger completed 1972.
From 1974, Reidar has held several managerial positions in Geco-Prakla, Schlumberger, PetroData (Diskos), Iron Mountain and Geograf within programming, IT and business development.
Reidar is a specialist in survey management and has been running several Seismic Operations, 2D, 3D deep seismic and Site Survey projects covering planning, survey supervision and follow up.
Erik Håvarstein
40+ years of oil and gas experience from service and operating companies including Geco, Geoteam, Statoil and Geograf.
Worked with the geophysical operations both in NW Europe and international. Experience in land seismic operations in Algerie and Libya.
Specialities include management and planning of 2D,3D,4D, OBC, nodes, site surveys and pipeline routes.
Thomas Wiborg
MSc Geophysics, 1983.
Thomas joined ELF Aquitaine just after he left university. His experience stretches from planning, support and supervision covering marine deep seismic, shallow seismic (site survey), geotechnical and VSP operations.
After ELF becoming Total his positions has been Head of Document management and Head of Contracts holding positions in Norway, France and Nigeria.
In Geograf Maritim Thomas is focusing Buisness Development as well as planning and supervising offshore operations.
Jan Vidar Grindheim
PhD (2018): Industrial PhD for Geograf AS at NMBU, Norway.
Jan Vidar got passionate about developing marine seismic streamer code while doing his master thesis at NMBU for Geograf AS, entitled "Optimalization of system for Quality Control of seismic navigation data."
After joining Geograf in 2006, he worked on developing a real time seismic streamer navigation system, and later also on Geograf's Target Point Streamer Steering (TPSS) system.
In 2013 he started an Industrial PhD for Geograf at NMBU. The thesis was entitled "Modeling, prediction and control of marine towed seismic streamers."
Jan Vidar joined Geograf Maritim in 2020 as Researcher. The focus is R&D in the field of marine seismic modeling, navigation and control. Current work includes developing an efficient seismic front-end & streamer spread dynamic model.
Publications can be found at Researchgate: