Geophysics Present Status Gap Analysis Future Focus Outcome: Message and Feedback

Present status Norway leading role (Geco, PGS, etc) Marine operations/multi streamer towing systems; Ramform

Norwegian companies taken over by international majors (Geco, Geoteam, Inside Reality, Petrel, Voxelvision, etc) Seismic: key tool for exploration and reservoir description (3D, 4D, 4C)

”New” technologies emerging: EM, Vizualisation systems, prestack-data usage, LOFS/4D, Rock Physics Integration Ongoing co-operation initiatives: Diskos Force/OG21

Gap Analysis Challenges: Gas chimneys, Basalt, Complex waterbottom topography and/or overburden, Anisotropy, Salt, Stratigraphic traps, Carbonates, Sand Injectites, Gas Hydrates, Heavy Oil, etc Technologies: Positioning/Sampling; Longer offsets, Imaging; Elastic Recording, Processing and Interpretation (4C, LFP) Workstations: Intelligent Autotracking; Classification; Fault tracking and Handling; Data-handling/access, User-friendly, Standard platforms, AVO:Multicubes  prestack Data access: field- and prestack data

Future focus: Improved Lithology and Fluid Prediction (LFP) using full elastic wave field (4C, EM) Depth Processing for imaging of complex areas. 3D visualization techniques and user-friendly interpretation tool-kits

Seismic Data Acquisition Technology Gap Remarks Improved illumination in complex areas.This can be achieved by multi-azimuth acquisition, sea floor recording, long streamers and may include use of several vessels simultaneously. Acquisition of shear wave data. Development of shear wave sources and more cost effective recording systems. Ocean bottom seismic (4C) can help in seeing through gas chimneys, basalt flows, verifying DHI’s and improve definition of stratigraphic traps. Optimize ocean bottom equipment for LoFS (deployment, stability, cost) Permanent sea floor installations to record seismic data whenever required may become ‘the norm’ for new field developments in Norway and worldwide. High resolution seismic and accurate positioning and increased repeatability for 4D surveys in order to be able to detect smaller changes in the state of reservoir fluids. This is mainly a challenge for the service industry. High Density 3D and Q are trademarks for acquisition of 3D seismic with short streamer spacing and dense sampling. Over/under streamers with accurate depth control and positioning. This method has potential both for increased bandwith and multiple removal. VSP technology with in-well equipment