September 2010 SINTEF Petroleum Research Seismic & basin modelling activities Combining Geophysics and Basin Modelling Data to Reduce Exploration Risks Full Waveform Inversion (Imaging problems, sub-salt & sub-basalt in Barents Sea) In complex geological settings, like sub-salt areas, conventional seismic imaging methods usually fail to reconstruct well defined images. To improve velocity model building in such complex regions, we use frequency-domain full-waveform inversion. This method allows to reconstruct the full wavenumber range contained in the data and thus to drastically improve the resolution of the derived models. It also provides a quantitative estimation of the physical properties in this area. Status: 2D visco-acoustic inversion code is available. Applications to synthetic dataset in collaboration with StatoilHydro in progress. Application to sub-salt synthetic example in progress. Contact: Cé[email protected] IntCSEM Controlled-source electromagnetic (CSEM) methods are an important new tool for identifying hydrocarbon accumulation. Integrating CSEM and seismic data can provide added value for both methods. We attempt to integrate both data types in a joint CSEM and seismic full waveform inversion. (1) CSEM forward modeling (2) CSEM full- waveform inversion (3) Joint CSEM/seismic full-waveform inversion improved input (lithology, porosity) Rock physics modeling/inversion Lithology, hydrocarbon volumes, phases, uncertainties Basin modeling: hydrocarbon volumes, phases, uncertainties Cross- calibration Best prediction Structural constraints “Soft” rock physics constraints integration with rock physics and basin modeling possible feedback Status: Project open for funding. Contact: [email protected] Top Seal Leakage Strategic Institute Program “Top seal integrity and leakage, with relevance for exploration risk in the Barents Sea” will take place from 2008- 2010. The work flow is shown below: Cap rock properties: Porosity, permeability, entry pressure, mech. strength as function of •Facies •Compaction and diagenesis •Databases / literature Leakage and remigration: •Hydraulic leakage •Pressure and stress interactions •Erosion and uplift effects •Trap simulator •Seismic detection of fractures / leakage Applying leakage / seal models – case study: •Constraining burial and temperature history •Modeling pressure and stress history •Modeling leakage processes •Integration seismic / EM / Bas Mod •Calibration to well observations Status: Three years project, 10.8 MNOK by the Norwegian Research Council. Contact: [email protected] GEOcompaction (Global improved porosity compaction relationship for basin scale fluid flow modelling) The objective is to establish an improved porosity compaction relationship for better hydrocarbon migration modelling and pore pressure prediction. The deliverables will be an improved porosity compaction model, tested and evaluated on large well log data sets from several sedimentary basins, and implemented in basin modelling tools both for hydrocarbon migration and pore pressure prediction. The model may also be applied for seismic velocity inversion. North Sea 600 1000 1400 1800 2200 2600 3000 0 20 40 60 80 100 Porosity/Clay content Depth [m] North Sea 2 0 20 40 60 80 100 Porosity/Clay content GOM 0 20 40 60 80 100 Porosity/Clay content West Africa 0 20 40 60 80 100 Porosity/Clay content North Sea 600 1000 1400 1800 2200 2600 3000 0 20 40 60 80 100 Porosity/Clay content Depth [m] North Sea 2 0 20 40 60 80 100 Porosity/Clay content GOM 0 20 40 60 80 100 Porosity/Clay content West Africa 0 20 40 60 80 100 Porosity/Clay content Porosity Clay Estimated Status: Project open for funding. Contact: [email protected] www.sintef.com Within SINTEF Petroleum Research, the Seismic and Reservoir Technologies Department and the Basin Modelling Department offer a wide range of integrated solutions for exploration. By combining geophysics data and basin modelling data in an integrated workflow the risks of exploration are reduced. Our aim is to developp new methods and workflows to address the current challenges of the oil industry. Email: [email protected] www.sintef.no/petroleum Bergen SINTEF Petroleumsforskning AS Postal address: Thormøhlens Gate 53 C, NO-5006 Bergen, Norway Phone: +47 73 59 11 00 Fax: +47 55 31 42 55 Stavanger SINTEF Petroleumsforskning AS Postal address: POB 8034, NO-4068 Stavanger, Norway Phone: +47 51 87 44 00 Fax: +47 51 87 44 01 Houston SINTEF Petroleumsforskning AS Postal address: MARINTEK (USA), Inc., 2603 Augusta #200, Houston, Texas 77057, USA Tel: +1 713 452 2771 Fax: +1 713 452 2768 Trondheim (Main Office) SINTEF Petroleumsforskning AS Postal address: POB 4763 Sluppen, NO-7465 Trondheim, Norway Phone: +47 73 59 11 00 Fax: +47 73 59 11 02