Seismic Stratigraphy - Brossura

Sheriff, R.E.

 
9780934634519: Seismic Stratigraphy

Sinossi

Three points make seismic stratigraphy feasible now: (1) we have better data quality, (2) we have begun to sys­ tematize analysis procedures, and (3) we believe in the geologic significance of waveshape details.

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Contenuti

1 Introduction.- Stratigraphie Patterns in Seismie Data.- Seismie Stratigraphy Subdivisions.- Seismie Limitations.- Stratigraphie Traps.- 2 Processing for Stratigfraphic Interpretation.- Proeessing Objectives.- Examples of Proeessing Improvements.- Migration.- Wavelet Processing.- Summary.- 3 Seismic Sequence Analysis: The Geologic Models.- Geologic Sealevel Change Model.- Reflections as Constant Time Indicators.- Picking Seismic Sequences.- Alternate Concepts.- 4 Seismic Sequence Analysis: The Implementation.- Picking of Unconformities to Separate Seismic Sequences.- Mapping Seismic Sequences in Three Dimensions.- Examples.- Summary of Procedure.- 5 Seismic Facies Analysis and Reef Patterns.- Seismic Facies.- Types of Reflection Characteristics.- Examples.- Diiferent Concepts of Marine Onlap.- Classification Table for Clastic Facies.- Reef Patterns.- Distinguishing Characteristics of Reefs.- 6 Velocity and Resolution.- Velocity as a Diagnostic.- Measurement of Velocity.- Resolution.- Fresnel-Zone Effects.- 7 The Composition of a Seismic Trace: Modeling.- The Modehng Concept.- The Convolutional Model.- Reflectivity.- Forward Modeling: Synthetic Seismogram Manufacture.- Inverse Modeling: Seismic Log Manufacture.- Examples of Inversion.- 8 Reflection Character Analysis.- Simple Situations.- Amplitude as an Important Discriminant.- Case Studies.- Summary of Interpretation Procedures.- 9 Hydrocarbon Indicators.- Seismic Attributes.- Other Hydrocarbon Indicators.- Examples of Color-Attribute Interpretation.- Defining Reservoir Limits.- Summary of Hydrocarbon Indicators.- Envoi.- References.

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