![]() ![]() The amplitudes can be modelled by the Zoeppritz equations. īasic Theory Incident P-wave Reflected S-wave Reflected P-wave = RP r i r VP1, VS1, r1 VP2, VS2, r2 t t Transmitted P-wave Transmitted S-wave If q > 0o, an incident P-wave will produce both P and S reflected and transmitted waves. Inversion of RP and RS to give ZP and ZS.Relative acoustic impedance (RAI) inversion.A number of different possibilities have been proposed, which can be grouped into three main categories:.But which two attributes will give us the best estimate of these reservoir parameters?.Seismic Lithology Estimation Gathers Stack AVO Analysis Inversion Attribute 1 Estimate ZP= VP Attribute 2 Estimate VP, VS, and The AVO method allows us to use multiple attributes to simultaneously estimate VP, VS, and , thus inferring fluid and/or lithology. This allows only for the estimation of acoustic impedance, which is not sufficient for inferring fluid content. Seismic Lithology Estimation Gathers Stack Inversion Estimate ZP= VP Traditional methods of seismic lithology estimation involve stack followed by inversion. I will illustrate these ideas with examples taken from Canada, the Gulf Coast and the West of Shetlands, UK.These new trends involve alternate ways of extracting information about the fluid content and lithology of the reservoir.In this presentation, I will review the principles of the AVO (Amplitude Variations with Offset) method and then look at some of the new trends that are emerging.By Brian RussellHampson-Russell SoftwareCalgary, Alberta. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |