E-Courses - Geophysics

Seismic Acquisition

Seismic Acquisition

Seismogram Analysis

Seismogram AnalysisThe module gives an introduction to the analysis of seismograms and how this knowledge can be used to locate earthquakes.

Instructor: Eystein Huseby

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Seismic Equipment I

Seismic EquipmentThe module describes the most important aspects in recording of marine multichannel seismic data acquisition.

Instructor: Rolf Mjelde

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Seismic Equipment II

Seismic Equipment IIThis module presents the most important equipment used for marine seismic surveys, both on the source- and receiver side.

Instructor: Rolf Mjelde

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SVALEX Seismic

SVALEX SeismicThis module presents some of the data and results from the seismic part of SVALEX, which is a petroleum related, geo-scientific field-course for students performed at Spitsbergen. The data presented were acquired in the period 2001-2005. The purpose with the module is to prepare coming SVALEX students, and more generally, to show some examples of use of seismic data at various scales and geological settings.

Instructor: Rolf Mjelde

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Land Seismic Acquisition

Land Seismic AcquisitionThis module presents the most commonly used equipment and principles used for seismic surveys on land, from sedimentary basin to crustal scale.

Instructor: Rolf Mjelde

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4C Seismic

4C SeismicThe purpose with this e-module is to present the principles behind acquisition and use of Ocean Bottom Seismic (4C seismic) data, with focus on reservoir scale.

Instructor: Rolf Mjelde

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VSP Data: Applications

VSP Data: ApplicationsThe present module will outline the most important steps in processing of Vertical Seismic Profiling (VSP) data, and some of the method's main applications will be discussed.

Instructor: Rolf Mjelde

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VSP Data: Principles

VSP Data: PrinciplesA vertical seismic profile (VSP) is a measurement procedure in which a seismic signal generated at the surface of the earth is recorded by geophones secured at various depths to the wall of a drilled well.

Instructor: Rolf Mjelde

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Seismic Acquisition Geophysical Principles

Seismic Acquisition: Geophysical PrinciplesThe module presents the basic geophysical needed to understand acquisition of marine multichannel seismic data.

Instructors: Rolf Mjelde, Swie Djin Nio

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OBS Acquisition

OBS AcquisitionThis module focuses on the acquisition of P-waves detected by Ocean Bottom Seismometers (OBS), on regional, semi-local and local scales. The section 'Local surveys' is an example of a marine 4C survey.

Instructor: Rolf Mjelde

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OBS Modelling: P-Waves

OBS Modelling: P-WavesThis module focuses on the modelling of P-waves detected by Ocean Bottom Seismometers (OBS). In addition, OBS data interpretation is described. The background for the use of OBSs, as well as data acquisition and processing, are discussed in the modules: OBS acquisition and OBS processing.

Instructor: Rolf Mjelde

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Seismic: Ethics

Seismic: Ethics

Instructor: Rolf Mjelde

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Seismic Processing

Seismic Processing

3D Seismic

3D SeismicThis module describes the basic principles behind acquisition and processing of 3D seismic reflection data.

Instructor: Rolf Mjelde

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Seismic Processing

Seismic ProcessingThe module describes the most important aspects in processing of marine multichannel seismic data.

Instructor: Rolf Mjelde

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OBS Processing

OBS ProcessingThe present E-module describes state-of-the-art single-channel receiver processing of data acquired by use of three-component Ocean Bottom Seismometers (OBS)

Instructor: Rolf Mjelde

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Seismic Interpretation

Seismic Interpretation

Improving Seismic Data for Structural Interpretation

Improving Seismic Data for Structural InterpretationSeismic data can be improved after final processing by applying simple techniques. One method is to combine several seismic surveys. In addition, the data set can commonly be further improved by applying dip filters and frequency filters. This requires a thorough understanding of the geology of the area. By combining and filtering seismic surveys from the Gullfaks Field, northern North Sea, an enhanced seismic interpretation could be carried out.

Instructor: Jonny Hesthammer

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Surface Imaging and Modelling

Surface Imaging and Modelling

Evaluation of the Timedip, Correlation and Coherence Maps

Evaluation of the Timedip, Correlation and Coherence MapsInvestigation of the timedip, correlation and coherence attribute maps from the Gullfaks Field demonstrates that in areas of poor data quality, the timedip map is best for structural interpretation. Although the coherence map can be developed without having any seismic interpretation, the method will reveal numerous (curvi-)linear features that may be misinterpreted as faults unless quality controlled against well data. Control against well data shows that it is very easy to overinterpret the seismic data based on surface and volume attributes.

Instructor: Jonny Hesthammer

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Seismic Attribute Analysis

Seismic Attribute AnalysisSeismic attribute maps provide a useful tool in interpreting faults particularly those close to or below seismic resolution. Dip, relief, azimuth, and amplitude maps are most useful. One of the challenges is to distinguish between anomalies related to real geological features and to seismic noise: -both of which may occur as linear or curvi-linear, continous features on the attribute maps. This challenge is solved by use of independent data as core data, dipmeter data, stratigraphic log correlation and forward modelling.

Instructor: Jonny Hesthammer

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Reservoir Characterization

Reservoir Characterization

Karst - a Potential Geohazard and Reservoir

Karst - a Potential Geohazard and ReservoirA basic introduction to karst is given, focusing on the formation of sinkholes, dissolution and karst as a potential geohazard and reservoir.

Instructor: Bjarne Rafaelsen

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Trapping Mechanisms - Forming Petroleum Reservoirs

Trapping Mechanisms - Forming Petroleum ReservoirsAn overview of trap types normally forming petroleum reservoirs are presented. Animations, seismic profiles and examples from petroleum fields explain the nature and formation of structural, stratigraphic, hydrodynamic and combination traps.

Instructors: Erik Henriksen, Oleg Kuznetsov, Andrey Pokul, Bjarne Rafaelsen, Polina Safronova, Antonina Stoupakova

 

Participants' feedbacks

Testimonials

'Shear bands are essential in deformed sandstone reservoirs. This module helps the geoscientists understand what they are. Animations would be useful to help the learner understand the deformation processes although the author has done a good job explaining this without animations.’

'Good definitions and explanations in addition to illustrating figures makes this a very good educational module..’

 

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